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W A S P
=======
Water and Steam Properties
==========================
Version 1.2 August 1994
Copyright (C) 1992, 1994
All rights reserved
Katmar Software
PO Box 654
Westville
3630
South Africa
_______
____|__ | (tm)
--| | |-------------------
| ____|__ | Association of
| | |_| Shareware
|__| o | Professionals
-----| | |---------------------
|___|___| MEMBER
DISCLAIMER
----------
The WASP programme and documentation are supplied as is. Katmar
Software disclaims all warranties, expressed or implied, including
but not limited to, the warranties of merchantability and of fitness
for any purpose. Katmar Software and the programme author assume no
liability for damages, direct or consequential, which may result
from the use of WASP.
TABLE OF CONTENTS
-----------------
Introduction to WASP . . . . . . . . . . . . . . . . . . . . . 1
Installation and Startup . . . . . . . . . . . . . . . . . . . 1
Hardware and Software Requirements . . . . . . . . . . . . . . 3
Quick Start for Experienced Users . . . . . . . . . . . . . . . 3
Printing the Manual . . . . . . . . . . . . . . . . . . . . . . 5
Detailed Operating Instructions . . . . . . . . . . . . . . . . 5
Start-up . . . . . . . . . . . . . . . . . . . . . . . . . 5
On-line Help System . . . . . . . . . . . . . . . . . . . 5
Data Entry . . . . . . . . . . . . . . . . . . . . . . . . 6
Results Screens . . . . . . . . . . . . . . . . . . . . . 7
Properties of Wet Steam . . . . . . . . . . . . . . . . . 8
Searching for Specific Values of Properties . . . . . . . 9
Calculation Examples . . . . . . . . . . . . . . . . . . . 10
Fixed Properties . . . . . . . . . . . . . . . . . . . . . 13
Selecting Units . . . . . . . . . . . . . . . . . . . . . 14
Using the Menus . . . . . . . . . . . . . . . . . . . . . 15
Exiting from WASP . . . . . . . . . . . . . . . . . . . . 15
Accuracy Considerations . . . . . . . . . . . . . . . . . . . . 15
The Shareware Distribution System . . . . . . . . . . . . . . . 18
Getting an Up-to-date Evaluation Copy . . . . . . . . . . . . . 20
WASP Licensing Policy . . . . . . . . . . . . . . . . . . . . . 21
Software Support Policy . . . . . . . . . . . . . . . . . 22
Registration Procedures . . . . . . . . . . . . . . . . . 23
Payment by Credit Card . . . . . . . . . . . . . . . 23
Payment via CompuServe . . . . . . . . . . . . . . . 23
Payment by Cheque or Money Order . . . . . . . . . . 24
Registration to Engineering Schools . . . . . . . . . . . 24
ASP's Ombudsman Policy . . . . . . . . . . . . . . . . . . . . 25
Bug Reports and Wish Lists . . . . . . . . . . . . . . . . . . 25
Revision History . . . . . . . . . . . . . . . . . . . . . . . 25
Other Engineering Packages from Katmar Software . . . . . . . . 26
Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
WASP Registration Form . . . . . . . . . . . . . . . . . . 26
Water and Steam Properties - Version 1.2 Page i
Introduction to WASP
====================
WASP is a replacement for traditional printed Steam Tables, but it
goes further in that it provides a much wider set of properties, it
eliminates the need for interpolating between data points, and it
will work in any of the generally accepted units.
It contains data for 15 point properties, and 17 temperature and
pressure dependent properties. Most of the correlations cover the
range from -100 C to 800 C and up to 1000 bar, and some extend
even beyond this range. Calculated data points match published
data very closely.
WASP can be used in two different ways, so that its use is similar
to using printed Steam Tables, but of course easier and faster.
The first way is when you know the conditions of the ice, water or
steam and you want to find the physical properties. If you are
working with wet steam you can also enter the steam quality to get
some of the combined properties.
The second option allows you to search for the conditions that give
rise to a specific value of the enthalpy, entropy or density. This
is useful when doing calculations involving compression or
throttling.
The programme has been carefully designed for speed and ease of use.
On-screen prompts appear at every step to guide you. In addition
there is context sensitive, on-line Help available at all times. If
you are ever unsure of what the programme expects you to do, simply
pressing the <F1> key will open a window with detailed instructions
and information. You can also view any Help Screen at any time by
selecting it from a Help Index.
WASP is distributed as Shareware. If this copy is registered to
anyone other than yourself, then you are entitled to use it for a
few weeks to determine its value to you. If you decide to continue
using the programme then you must register your copy with Katmar
Software. Further details on Shareware and the registration
procedure are given later in this manual.
Installation and Startup
========================
Your first step should be to make a copy of your distribution disk.
Do not use your distribution disk as a working disk. If your
distribution disk is a 5.25 inch floppy, write protect it by putting
a tab over the notch in the side of the disk. If it is a 3.5 inch
stiffy disk write protect it by sliding the plastic button in the
corner to open the hole. Take an unused disk of the same size as
your distribution disk, label it as your working disk and make sure
it is NOT write protected. If you have identical A and B drives
insert the distribution disk in Drive A and the working disk in
Water and Steam Properties - Version 1.2 Page 1
Drive B. Type DISKCOPY A: B: and press <ENTER>. If your A and B
drives are not the same (or you do not have a Drive B) type DISKCOPY
A: A: and press <ENTER>, and then follow the instructions on the
screen to swap disks using the distribution disk as the SOURCE disk
and the working disk as the TARGET disk.
Installation of WASP entails simply copying all the files to either
a diskette or to your hard disk. The distribution disk that you
received should contain all of the following files :-
GETRESP.EXE Utility for interactive batch files
VIEW.COM Text file display utility
README Brief details on WASP and its distribution
README.BAT A batch file used to display or print README
REGISTER.DOC Order form for registering your copy of WASP
WASP.EXE The executable file for WASP
WASPBOOK.DOC The instruction manual for the WASP package
WASPDEFS.DTA Holds the selected units etc
WASPHELP.HLP The on-line help instructions
FILE_ID.DIZ Description for BBS automation
OMBUDSMN.ASP ASP Ombudsman policy statement
VENDOR.DOC Info for shareware disk distributors and BBSs
If instead of these files your disk contains a file named
WASP12.ARC, WASP12.ZIP or some similar name then it means that the
disk distributor has compressed the files into an archive file to
get more onto the distribution disk. In this case you will need to
follow the distributors instructions on how to extract the files
from the archive before you can copy them.
If you are installing to your hard disk you should copy the files to
a separate sub-directory. To create a new sub-directory on your
hard drive follow these steps :-
1) Ensure that you are at the DOS prompt, ie display shows C:>
(if your hard drive is drive D display shows D:> , etc)
2) If you want the new sub-directory to be off the root
directory, type CD\ and press <ENTER>. If you prefer the
new sub-directory to be off some other directory, change to
that directory.
3) Type MD WASP and press <ENTER>.
4) Type CD WASP and press <ENTER>. Display should show
C:\WASP>. If display does not show this, type PROMPT $P$G
and press <ENTER>.
If your distribution disk contains all the files listed above,
insert it into the A: drive and type COPY A:*.* and press <ENTER>.
The programme is then ready to run. If your distribution disk does
not contain all the files listed above, but instead contains an
archived file, copy that file to the new sub-directory (eg COPY
A:WASP12.ZIP). Then follow the distributors instructions to
un-archive the files.
Once the files have been copied you should type WASP and press
<ENTER> to start the programme. The programme starts with an
Water and Steam Properties - Version 1.2 Page 2
opening screen and then a screen giving brief details of the
shareware distribution system, before getting to the programme
proper. The initial screens can be skipped by pressing the
<SPACE BAR>.
If you are short of space on your hard disk you can delete some of
the files. Only two files are absolutely essential for running
WASP. These are WASP.EXE and WASPDEFS.DTA. If you want to be able
to use the on-line help facility you will also need the file
WASPHELP.HLP, but the programme can run without it. When you pass
on copies of WASP to others please always include all the files on
the distribution disk so that the recipient can make a full
evaluation of the package.
Hardware and Software Requirements
==================================
WASP will run on virtually any IBM(tm) PC or compatible machine. It
has been designed to be able to be used on a minimum specification
system, but also to make use of higher specification equipment if
available. For example it will run perfectly well on a monochrome
screen, but will switch to colour if it detects a colour video card.
Similarly it will use a numeric co-processor if it finds one, but
will run quite happily (although of course more slowly) if none is
found.
Some EGA and VGA displays, particularly on portable computers, use
varying shades of grey rather than true colour. WASP would detect
these machines as having colour screens and you may have some
difficulty reading the display. In this case you can force the
programme to use the monochrome palette by pressing <Alt M> at the
opening screen or by using the /M command line switch i.e. start the
programme by typing WASP /M. When you exit from the programme it
will store this choice and start up in monochrome mode the next time
you use it.
Summary of system requirements :-
DOS : 2.11 or later
RAM : 512k or more
DISK : 360k or larger floppy, stiffy or hard disk
VIDEO : Monochrome, CGA, EGA, VGA or compatible
Co-processor : Optional
Quick Start for Experienced Users
=================================
Even if you are only a moderately experienced computer user you
should be able to use WASP without going into this manual in any
depth at all. The brief instructions that follow in this section
should be all you need to make full use of the programme. The
programme will guide you with on-screen prompts at every stage and
on-line help is always available by pressing <F1>.
Water and Steam Properties - Version 1.2 Page 3
The programme is started by typing WASP, or WASP /M if you want to
force monochrome mode on a colour screen. The opening screens can
be skipped by pressing the <SPACE BAR> or virtually any other key.
After the opening screens you will see the DATA ENTRY screen. This
is used when you know the conditions of temperature and pressure,
and you want to find the physical properties. In the general case
you will enter the temperature and pressure, pressing <ENTER> after
each entry. For the specific case of saturated conditions you need
to enter either the temperature or the pressure, but not both. In
this case you can use <TAB> to ensure that the property you want to
enter is on the top line in the box and then key in the value.
After typing the value, press <SPACE BAR> instead of <ENTER> and the
programme will calculate the corresponding value for saturated
conditions.
After you have specified the conditions the programme will calculate
the properties and display them. There are two forms for the
results screens. These are a brief and a full format screen. You
can toggle between the two by pressing <F2>. If you are working
with saturated liquid and vapour you can set the wet steam quality
by pressing <Alt W> at the results screen.
If you want to find the conditions that result in a specific value
for the enthalpy, entropy or density call the Search function by
pressing <Alt S> at the Data Entry or Results screen. Use <TAB> to
select the property you want to find.
The entry fields in the Search function will default to the last
properties calculated and displayed on the Results screen. Under
saturated conditions the Results Screen will show values for each
phase. The Search function follows a simple rule to select which
value will become the default - It always defaults to the vapour
value UNLESS it is displaying wet steam properties and then it will
take the wet steam value.
During data entry the editing keys work in a very standard way, and
should not give you any trouble at all. If there is already a value
in the entry field you can accept it by pressing <ENTER> or <SPACE
BAR>. If you want to enter a completely different value just start
typing and the original value will disappear. However if the first
key you press is an <ARROW> key the programme will assume you want
to edit the displayed value and will not clear it.
While either the DATA ENTRY or RESULT screen is displayed you can
call up a list of fixed properties with the <F3> key. Pressing <F3>
again will take you back to where you were.
The units in which you specify the conditions, and in which the
properties are displayed, can be changed with the <F4> key. The
units can be selected in pre-defined sets, or individually if you
want to mix systems of units.
Water and Steam Properties - Version 1.2 Page 4
Printing the Manual
===================
If you are reading this on your screen and you want to make a hard
copy on your printer you can do it in one of two ways. The easiest
way is to run the programme and then press <Alt P> at the opening
screen. The other way is to type PRINT WASPBOOK.DOC at the DOS
prompt.
Detailed Operating Instructions
===============================
This section gives full details for each step of using the
programme.
Start-up
--------
If you are running WASP from the DOS prompt (eg C:\>) it will be
necessary to change to the directory into which you copied the
files. You should then type WASP and press <ENTER> to start the
programme. If you want to force a colour video card to display in
monochrome you can start the programme with the WASP /M command. If
you are using a hard disk manager or menu system all this should be
automated into the menu.
When the programme starts it will display the opening screen with
the version and copyright information. After a while it will skip
to the shareware distribution notice screen. Both of these screens
can be skipped by pressing <SPACE BAR> or <ENTER>.
If you have a colour video card but a monochrome screen, as is often
the case with portable computers, you may have problems reading the
screen. If this is the case, press <Alt M> to switch to the
monochrome colour scheme.
On-line Help System
-------------------
At any stage during the running of the programme you can press <F1>
and get help on the specific item on which you are working. Once
you are in the Help window you will see in the top right corner the
message "Page x of y". If there is more than one page of help
available you can page through the help windows by pressing <PgUp>,
<PgDn>, <Home> and <End>. The message in the bottom right corner
tells you whether you can page up or down. There will also be
flashing arrows on the right hand side that show if there is more
information above or below the current page.
If you press <F1> while a help screen is being displayed you will be
shown an index of all the help available for this programme. From
this index you can select any one of the help topics that are
Water and Steam Properties - Version 1.2 Page 5
available. Simply use the <Arrow> keys to highlight the topic on
which you want help, and press <ENTER>.
After you have read that help topic you can return to the Help Index
by pressing <F1> again. You can switch back and forth like this as
often as you like.
When you have read all the help you want, you can return to where
you left the programme by pressing <Esc>.
Data Entry
----------
The Data Entry screen allows you to specify the temperature and
pressure at which the physical properties will be calculated. This
can be done in several ways, described below.
Apart from specifying these conditions there are other options
available on the Data Entry screen. Pressing <F3> will display the
physical properties that do not vary with temperature or pressure.
Pressing <F4> allows you to specify the units in which your entry is
made, and in which the properties will be displayed.
Although the Search function is not shown in the menu at the bottom
of the screen, you can use <Alt S> to jump directly to the screen
for entering the Search parameters.
If you have a colour video card <Alt C> and <Alt M> will switch
between colour and monochrome. If you want to exit WASP press
<Alt X>.
If you want to calculate the physical properties under SATURATED
solid/vapour or liquid/vapour conditions you need to specify either
the temperature or pressure, but not both. The entry must be made
on the top line and the <TAB> key is used to select which of these
you will enter. For example, if the programme is requesting you to
enter the temperature on the top line of the input box, but you want
to specify the pressure, press <TAB> to swop the two lines.
Under saturated conditions it is not necessary to press <ENTER>
after you have keyed in the number. Just press the <SPACE BAR> and
the corresponding value will be inserted and the properties will be
calculated.
In order to calculate the physical properties at conditions other
than saturated, you have to specify both the temperature and the
pressure. You can swop the two entry lines with <TAB>, and you can
move the cursor from one line to the other with the up and down
arrow keys. When you have keyed in the value on the bottom line
pressing <ENTER> will calculate the physical properties.
As you enter the conditions the programme will check that they fall
in the range covered by the data. If they are not valid entries,
the allowable range will be displayed at the bottom of the screen in
Water and Steam Properties - Version 1.2 Page 6
the units selected, and you will be asked to re-enter the value.
The allowable temperature range is from 166 to 1273 Kelvin (-160 to
1832 Fahrenheit) and the allowable pressure range is from 3.4e-7 to
100 000 kPa absolute (4.9e-8 to 14500 PSI absolute).
During data entry the left and right arrow keys, and the <HOME> and
<END> keys, allow you to move the cursor back and forth within the
entry field. The <DELETE> key deletes the character under the
cursor and the <BACKSPACE> key deletes the character to the left of
the cursor. <Ctrl BACKSPACE> will delete the entire entry field.
If the entry field already contains a number and you press a numeric
key before any of the editing keys, the programme will assume that
you want to override the original entry and will delete it before
displaying the character you have keyed. If you want to accept what
is already displayed just press <ENTER> or <SPACE BAR>, depending on
whether you are working under saturated conditions or not.
Data entry always works in INSERT mode, i.e. characters under and to
the right of the cursor will be moved to make space for the new
character.
Only numeric characters will be accepted, except that <e> can be
used to signify exponential notation. E.g. the value 2000 can be
entered as 2e3, and 0.001 can be entered as 1e-3.
Results Screens
---------------
There are several different formats for the results screens that
display the physical properties. The format of these screens varies
according to the phases that are present, and according to the
choices that you have made. However, all screens follow the same
basic pattern.
The highlighted box at the top of the screen shows the temperature
and pressure that you specified and also shows the phases that will
be present.
The main result box in the centre of the screen gives all the
physical properties, the units and the values for each phase. Every
alternate line in this box is highlighted to make it easier to
follow the line across the screen.
The bottom line of the result box shows some of the options
available. If you press <Esc>, or in fact any alphanumeric key, you
will be returned to the Data Entry screen.
The <F2> function key toggles between the full and brief versions of
the output screens. The brief results screen gives the properties
usually found in "Steam Tables". The full screen gives the same
information plus the less frequently needed properties. The brief
screen is easier to use because it contains less information.
Water and Steam Properties - Version 1.2 Page 7
When you exit from WASP the programme will make a note of which
results screen you had chosen, and will use this choice when it is
re-started.
When the properties are being shown for saturated liquid and vapour
the enthalpy, entropy and density for wet steam can be displayed.
These properties are only shown on the brief results screen to avoid
cluttering the display. You can use the <F2> toggle described above
to switch the results screens. While the results screen is being
displayed you can press <Alt W> to set the steam quality. Although
the <Alt W> prompt is only shown on the brief screen menu, it is
also available from the full results screen. If <Alt W> is pressed
from the full screen and a steam quality is entered, the display
will automatically switch to the brief results screen. The display
of the wet steam properties can be disabled by pressing <F10> when
the programme is requesting the steam quality ( i.e. after pressing
<Alt W> ).
If you want to search for the conditions that give rise to a
specific value of enthalpy, entropy or density press <Alt S> to call
the Search function. Full details on using the Search function are
given in a separate section below.
Although it is not shown in the list of options you can use the <F3>
function key to display the fixed physical properties. The <F4> key
allows you to choose the units in which the properties are
displayed. You can select standard sets of units, or choose the
units for each property individually. Further information on making
these choices is available in the section on Selecting Units below.
If you have a colour video card pressing <Alt C> and <Alt M> will
switch between colour and monochrome output. You can exit from WASP
by pressing <Alt X>.
Properties of Wet Steam
-----------------------
The enthalpy, entropy and density of wet steam can be shown, if
required and applicable. It is of course only available when
working with saturated liquid and vapour. It is only shown on the
brief results screen. You can switch to this screen by pressing
<F2> while the full screen is being displayed.
In order to set the steam quality, press <Alt W> at the results
screen. This option is only shown on the brief results screen menu,
but is available from the full results screen as well. When <Alt W>
is pressed from the full screen, the output will automatically
switch to brief.
The display of wet steam properties can be toggled on and off. The
toggle is set on by pressing <Alt W> at the results screen and then
entering the steam quality. It is set off by pressing <Alt W>
again, and then pressing <F10> when the steam quality is displayed.
Water and Steam Properties - Version 1.2 Page 8
The setting of this toggle, and the last steam quality entered (or
calculated by the Search function) are retained when you leave
WASP, ready for use as defaults in the next session.
Note that the steam quality is defined here as the percentage of
vapour present, whereas some texts refer to the moisture content.
Searching for Specific Values of Properties
-------------------------------------------
The Search function is aimed at easily finding the conditions of
temperature and pressure that give rise to known values of enthalpy,
entropy or density. This function can be called from the Data Entry
Screen or from the Results Screens by pressing <Alt S>.
After pressing <Alt S> you will be asked to enter the Search
Parameters. On the first line you must enter the value for any one
of enthalpy, entropy or density. Before you enter the value you can
select the property you want to search for by pressing <TAB>. Once
you have selected the property, WASP will keep prompting for that
one each time you use the Search function until you change it by
pressing <TAB> again.
If you have already used WASP to calculate the physical properties
at some conditions, you will see that the entry on the first line
has defaulted to the calculated value shown on the last Results
Screen. You can accept this value by pressing <ENTER>, or you can
simply type in the new value. Entering a value in this field works
in the same way as on the Data Entry Screen.
Under saturated conditions the Results Screen will show values for
each phase. The Search function follows a simple rule to select
which value will become the default - It always defaults to the
vapour value UNLESS it is displaying wet steam properties and then
it will take the wet steam value.
If you want to force the Search function to take the saturated
vapour value as the default you must either disable the display of
the wet steam properties or enter a steam quality of 100 %. Setting
the steam quality to 0 % will effectively make the saturated liquid
value the default.
On the second line you must enter either the temperature or the
pressure, and the programme will search for the other. Here again
you select the property you want to enter by pressing <TAB>. The
default values will be the last ones you entered on the Data Entry
Screen.
While making these entries you can change the units used by pressing
<F4>.
After you have entered the Search Parameters the programme will try
to find either the temperature or pressure that will satisfy them.
If the search is successful it will then display the value it finds,
Water and Steam Properties - Version 1.2 Page 9
together with the fluid condition. At this stage you can press
<ENTER> to see all the properties shown on the Results Screen, or
press <Esc> to re-enter the Search Parameters.
If no value can be found to satisfy the Search Parameters WASP will
advise you of the fact and then you can press <Esc> to re-enter the
Search Parameters, or press <F10> to abandon the Search function.
The programme limitations that could cause the search to be
unsuccessful are described below.
The range over which WASP can search for values of the chosen
properties is basically the same as that where it can calculate
those properties, with two exceptions.
The first is that it will not search in the solid phase. The second
area that may cause problems is searching for the pressure that
gives a known enthalpy in the liquid phase. At some temperatures the
enthalpy of the liquid first decreases as the pressure increases,
and then increases at higher pressures. The linear search technique
used by WASP fails under these conditions. In real life this will
rarely cause problems.
A word of caution is necessary when using the Search function. In
some areas the physical properties change very slowly, particularly
with changes in pressure. A good example is the entropy of liquid
water. If you take a value from a set of Steam Tables, and then use
WASP to search for it, you may find that it reports a pressure
significantly different from the Steam Tables. So although WASP
will very accurately calculate the properties when given the
conditions, the reverse is not always true. This will be less of a
problem when working with changes in a property and WASP is used to
calculate the properties before and after the change. As always,
for a critical design, cross check with other data sources.
Calculation Examples
--------------------
The following examples are given so that you can work through them
on your computer and get the "feel" of the WASP Search function.
All of these examples are given in SI and Customary Units. Please
press <F4> and select one of these two sets of units before tackling
an example problem.
In all of the examples we will use the Data Entry screen to enter
the initial conditions and to calculate the properties under those
conditions. One of these properties will then be used to search for
the final conditions. In order to decrease the typing required WASP
uses the last calculated properties as the default entries for the
Search function.
Under saturated conditions the Results Screen will show values for
each phase. The Search function follows a simple rule to select
which value will become the default - It always defaults to the
Water and Steam Properties - Version 1.2 Page 10
vapour value UNLESS it is displaying wet steam properties and then
it will take the wet steam value.
Example 1 - Constant Volume Process
-------------------------------------
Wet steam is heated at constant volume from the initial conditions
shown below to a temperature of 900 Fahrenheit ( 755.37 Kelvin ).
Determine the initial temperature, and the final condition and
pressure.
Initial Conditions :-
Quality 90 %
Pressure 300 PSI abs 2068.4 kPa abs
Procedure :-
At the Data Entry screen press <F4> to set the units to either SI or
Customary Units, according to your preference. While still at the
Data Entry screen press <TAB> to ensure that Pressure is on the top
line in the box. Key in the pressure, i.e. 300 PSI abs or 2068.4
kPa abs. As we are dealing with wet saturated steam press
<SPACE BAR> to generate the saturation temperature.
The Results Screen shows that the initial temperature is 417.3
Fahrenheit or 487.2 Kelvin.
Press <Alt W> to enter the steam quality, key in 90.0 and press
<Enter>. Because the volume and mass are constant the steam density
(or specific volume) will remain constant. We can therefore use the
WASP Search function to locate the conditions that give this known
density ( i.e. 0.7187 lb/ft3 or 11.513 kg/m3 ).
Press <Alt S> to call up the Search function. Press <TAB> to ensure
that Density / Volume is on the top line in the box. Note that the
correct density already appears in the entry field, because when
using the Search function WASP will default to the last value
calculated for wet steam.
Press <Enter> to accept this density. As we know the final
temperature, press <TAB> to ensure that Temperature is on the bottom
line of the box. Key in 900 Fahrenheit or 755.37 Kelvin and press
<Enter>.
The Search Results screen will echo the density and temperature
entry values, and also shows us that the steam is now in the
Superheated Vapour condition and that the pressure is 562.4 PSI abs
or 3877.7 kPa abs. If you press <Enter> again you will see all the
properties under the new conditions.
Water and Steam Properties - Version 1.2 Page 11
Example 2 - Constant Entropy Process
--------------------------------------
Steam expands under constant entropy conditions from the initial
conditions shown below to a pressure of 25 PSI abs (172.37 kPa abs).
Determine the initial condition, and the final condition and
temperature.
Initial Conditions :-
Pressure 1800 PSI abs 12410.4 kPa abs
Temperature 900 Fahrenheit 755.37 Kelvin
Procedure :-
At the Data Entry screen press <F4> to set the units to either SI or
Customary Units, according to your preference. While still at the
Data Entry screen, key in the pressure and temperature as given
above.
The Results Screen shows that the initial condition is Superheated
Vapour, and that the entropy is 1.5277 Btu/lb.F or 6.9350 kJ/kg.K.
We can use the WASP Search function to locate the conditions that
give this entropy. Press <Alt S> to call up the Search function.
Press <TAB> to ensure that Entropy is on the top line in the box.
Note that the correct entropy already appears in the entry field,
because when using the Search function WASP will default to the last
value calculated.
Press <Enter> to accept this entropy. As we know the final
pressure, press <TAB> to ensure that Pressure is on the bottom line
of the box. Key in 25 PSI abs or 172.37 kPa abs and press <Enter>.
The Search Results screen will echo the entropy and pressure entry
values, and also shows us that the steam is now in the Saturated
Liquid and Vapour condition with a quality of 86.3 %, and that the
temperature is 240.08 Fahrenheit or 388.75 Kelvin. If you press
<Enter> again you will see all the properties under the new
conditions.
Example 3 - Constant Enthalpy Process
---------------------------------------
Condensate flows under saturated conditions from a heat exchanger to
a flash vessel. The heat exchanger operates at 200 PSI abs (1378.9
kPa abs) and the flash vessel is controlled at 30 PSI abs (206.84
kPa abs). Determine the amount of flash steam generated, and the
final temperature of the steam.
Initial Conditions :-
Quality 0.0 %
Pressure 200 PSI abs 1378.9 kPa abs
Water and Steam Properties - Version 1.2 Page 12
Procedure :-
At the Data Entry screen press <F4> to set the units to either SI or
Customary Units, according to your preference. While still at the
Data Entry screen press <TAB> to ensure that Pressure is on the top
line in the box. Key in the pressure, i.e. 200 PSI abs or 1378.9
kPa abs. As we are dealing with saturated condensate press
<SPACE BAR> to generate the saturation temperature.
The Results Screen shows that the initial temperature is 381.79
Fahrenheit or 467.47 Kelvin.
Press <Alt W> to enter the steam quality, key in 0.0 and press
<Enter>. In a throttling process the enthalpy remains constant, so
we can therefore use the WASP Search function to locate the
conditions that give this known enthalpy ( i.e. 355.46 Btu/lb or
826.44 kJ/kg ).
Press <Alt S> to call up the Search function. Press <TAB> to ensure
that Enthalpy is on the top line in the box. Note that the correct
enthalpy already appears in the entry field, because when using the
Search function WASP will default to the last value calculated for
wet steam.
Press <Enter> to accept this enthalpy. As we know the final
pressure, press <TAB> to ensure that Pressure is on the bottom line
of the box. Key in 30 PSI abs or 206.84 kPa abs and press <Enter>.
The Search Results screen will echo the enthalpy and pressure entry
values, and also shows us that the steam is now in the Saturated
Liquid and Vapour condition and that the temperature is 250.3
Fahrenheit or 394.5 Kelvin. The quality of the steam is 14.4 %,
which means that 14.4% (by mass) of the condensate flowing into the
flash vessel will convert to steam. If you press <Enter> again you
will see all the properties under the new conditions.
Fixed Properties
----------------
The physical properties of water that do not vary with temperature
or pressure can be displayed by pressing <F3> at the Data Entry
Screen or at the Results Screen displaying the variable properties.
The main result box in the centre of the screen gives all the
physical properties, the units used and the values for each physical
property. Every alternate line in this box is highlighted to make
it easier to follow the line across the screen.
The bottom line of the result box shows some of the options
available. If you press <Esc> or <F3> you will be returned to the
screen from where you requested the fixed properties.
Water and Steam Properties - Version 1.2 Page 13
The <F4> key allows you to choose the units in which the properties
are displayed. You can select standard sets of units, or choose the
units for each property individually. Further Help on making these
choices is available in the section on Selecting Units below.
If you have a colour video card pressing <Alt C> and <Alt M> will
switch between colour and monochrome output. You can exit from WASP
by pressing <Alt X>.
Selecting Units
---------------
The units that are used for data entry and for displaying the
physical properties can be chosen in sets, or individually for each
property. The <F4> key can be pressed at any data entry or results
screen to call up the menu for selecting the units. The first 5
options on the menu select the sets of units and the balance of the
options are for the individual units.
There are two ways to make a selection from the menu. The first is
the "Point-and-Shoot" method. Use the arrow keys to highlight your
choice, and then press <ENTER>. The second method is faster,
requiring only a single key press. Simply press the alphabetic key
corresponding to your choice.
You can see which units are currently selected by pressing
<SPACE BAR> while the menu is displayed.
If you select one of the sets of units, the programme will display
the units that will be used for each property. Press <Esc> to get
back to the menu, and again to get back to the point from where you
called the Units menu.
When you choose to change the units for an individual property you
will be shown a sub-menu with the available units. In the sub-menu
the currently selected unit will be highlighted. The method for
selecting the option from the sub-menu is exactly the same as for
the main menu. After you make your selection the programme will
automatically return to the main menu, from where you can choose to
change the units for another property, or you can press <Esc> to
quit the menu.
The only individual unit that needs further explanation is option
"H", ie Density / Specific Volume. Strictly speaking density and
specific volume are not the same property, but in WASP they are
dealt with together as the one is just the reciprocal of the other.
Whenever you exit from WASP, the programme will check to see if the
selected units have changed. If they have, it will give you the
option of saving the new selection of units for use in the next
session. You can revert to the last saved selection of units at any
stage during a session by selecting the first option on the units
menu.
Water and Steam Properties - Version 1.2 Page 14
Using the Menus
---------------
All the menus in WASP follow exactly the same format. There are
three ways to make a selection from a menu.
The first is the "Point-and-Shoot" method. Use the arrow keys to
highlight your choice, and then press <ENTER>. The second method is
basically the same as the first, except that the mouse is used to
highlight the choice. The left mouse button functions as an <ENTER>
key and the right button as an <Esc> key.
The third method is the fastest, requiring only a single key press.
Simply press the alphanumeric key corresponding to your choice.
Exiting from WASP
-----------------
When you want to exit from WASP press <Alt X>. As the programme
quits it will check to see if the selection of units to be used has
been changed from what it was at the start of the session. If the
selection was changed, the programme will request you to choose
whether you want it to start up the next session with the new units,
or with the same selection as the current session did.
The programme will also save your current selection of full or brief
results screen output, whether you were using the colour or
monochrome display, the last steam quality used or found and the
properties selected in the Search function. These selections are
saved automatically and you will not be prompted to confirm that you
want them saved.
Accuracy Considerations
=======================
The accuracies listed below are given in good faith and reflect our
testing of the WASP correlations against a wide range of sources.
We believe that the accuracies attained are well within the bounds
normally required for process engineering design work, but if you
are doing very exacting calculations (particularly if they are near
the critical point) you should cross check your data.
This cross checking of data is good engineering practice for
important design work and its necessity was brought home to us in no
uncertain way during the testing of WASP. We found several
typographical errors in well known data sources and some of the data
tables were just plain wrong. There are probably quite a few
installations around the world that were designed using this data !
The accuracies listed are based on comparing the calculated value of
the property with the original data source for given values of
temperature and pressure. In some areas the physical properties
change very slowly, particularly with changes in pressure. A good
Water and Steam Properties - Version 1.2 Page 15
example is the entropy of liquid water. If you take a value from a
set of Steam Tables, and then use WASP to search for it, you may
find that it reports a pressure significantly different from the
Steam Tables. So although WASP will very accurately calculate the
properties when given the conditions, the reverse is not always
true. This will be less of a problem when working with changes in a
property and WASP is used to calculate the properties before and
after the change. As always, for a critical design, cross check
with other data sources.
There are accuracy advantages in using a package like WASP in that
you will avoid the typo's in the published tables, you will get
better interpolations between the published data points and you will
not be exposed to the risk of arithmetical errors in converting to
different units.
The "worst" errors are the worst that we found, and in general were
near the critical point.
Water and Steam Properties - Version 1.2 Page 16
PROPERTY TYPICAL ERROR "WORST" ERROR
Enthalpy
Solid 0.002 % 0.01 %
Saturated Liquid 0.03 % 0.3 %
Sub-cooled Liquid 0.5 % 3.0 %
Saturated Vapour 0.04 % 0.5 %
Superheated Vapour 0.04 % 0.5 %
Supercritical Vapour 0.4 % 4.3 %
Enthalpy of Vapourisation
Solid 0.001 % 0.01 %
Liquid 0.04 % 0.4 %
Entropy
Solid 0.01 % 0.02 %
Saturated Liquid 0.05 % 0.8 %
Sub-cooled Liquid 0.3 % 3.0 %
Saturated Vapour 0.01 % 0.02 %
Superheated Vapour 0.1 % 2.0 %
Supercritical Vapour 0.2 % 2.3 %
Density
Solid 0.02 % 0.03 %
Saturated Liquid 0.01 % 0.06 %
Sub-cooled Liquid 0.2 % 2.7 %
Saturated Vapour 0.04 % 0.4 %
Superheated Vapour 0.04 % 0.4 %
Supercritical Vapour 0.3 % 12.1 %
Saturation Pressure 0.02 % 0.05 %
Saturation Temperature 0.008 K 0.02 K
Viscosity
Saturated Liquid 0.1 % 0.8 %
Sub-cooled Liquid 0.6 % 9.7 %
Saturated Vapour 0.2 % 0.8 %
Superheated Vapour 0.5 % 4.0 %
Supercritical Vapour 0.5 % 15.0 %
Heat Capacity
Solid 0.2 % 1.0 %
Liquid 0.3 % 3.0 %
Saturated Vapour 0.1 % 0.2 %
Superheated Vapour 0.1 % 1.0 %
Supercritical Vapour 0.5 % 8.0 %
Thermal Conductivity
Liquid 0.2 % 0.9 %
Saturated Vapour 0.8 % 2.5 %
Superheated Vapour 1.3 % 12.0 %
Water and Steam Properties - Version 1.2 Page 17
PROPERTY TYPICAL ERROR "WORST" ERROR
Surface Tension 0.3 % 2.0 %
Isothermal Compressibility
Liquid 2.5 % 9.3 %
Dielectric Constant 0.04 % 0.6 %
Refractive Index of Liquid 0.002 % 0.004 %
Boiling Point 0.008 K 0.02 K
Isentropic Expansion Coefficient 0.001 0.005
The Shareware Distribution System
=================================
Although shareware is often thought of as a type of software, it is
actually a form of software distribution. This section gives
details on the shareware system and how it works.
The Shareware distribution system can be seen as having developed
naturally in the environment of free enterprise and innovation that
characterised the PC industry in the early 1980's. It has continued
to grow and today there is a huge variety of high quality software
available at reasonable prices. Shareware in fact covers a wider
range of subjects than commercial software. Some of the areas that
are particularly well represented are databases, word processors,
spreadsheets, CAD, games, DOS utilities, menuing systems, education,
accounting and programming support.
A support industry that includes magazines, disk distributors and
bulletin board systems has grown up around the Shareware system.
If you are new to Shareware you may like to have a look at some of
the software available from the disk distributors. They supply
evaluation copies of Shareware packages for about US$ 5.00 per disk.
This payment is for copying the software and the price of the disk,
and *NOT* for the software itself. If you like the software, and
decide to continue using it, you send your payment to the author and
not to the distributor.
Some distributors with good catalogues are :-
1 Public Brand Software, Box 51315, Indianapolis, IN 46241, USA.
2 The Public Domain and Shareware Library, Winscombe House,
Beacon Rd, Crowborough, Sussex, TN6 1UL, England.
3 JSE, 73 Highway, Fish Hoek, 7975, South Africa.
4 Seltec New Zealand, PO Box 943, Nelson, New Zealand.
5 Spearwood Shareware Service, PO Box 121, Hamilton Hill,
WA 6163, Australia.
Water and Steam Properties - Version 1.2 Page 18
The basic concept of Shareware is that the author retains the
copyright and all other commercial rights to the software and
documentation, while allowing, and indeed encouraging, wide copying
and distribution of the package.
There are a few restrictions that authors place on distribution.
All copies must be full copies of the entire package with no
modifications. Copies may not be sold for more than the cost of the
disk, the labour of copying and a reasonable profit. When selling
copies the distributor must state that the software is free for
evaluation purposes only and payment must be made to the author if
continued use is made of the programme.
Effectively the Shareware author is relying on the users of his
software to do part of his marketing by passing on copies. For this
reason Shareware is often also called User Supported Software. This
system eliminates almost all the advertising and marketing costs
that make up the major portion of the operating budgets of
commercial software distributors.
There are many advantages in Shareware to users and authors. The
cost to the user is low because no money is wasted on advertising
and fancy packaging that add no real value to the software. The
biggest advantage to the user is that it is a true
"try-before-you-buy" system. The software can be fully evaluated on
the user's hardware and in his own environment before payment is
made. Shareware therefore has the ultimate money-back guarantee --
if you don't use the product, you don't pay for it.
Another advantage to the user is that by its very nature Shareware
cannot be copy protected. This eliminates the hassle of key disks,
dongles, immovable sectors on hard disks, special install and
uninstall routines and all the other wonderful schemes that have
been devised to try the user's patience.
As there is no middleman (middlemen ?) not only is the cost kept
lower, but the user is also closer to the author and is able to
write directly to him for help and advice. Shareware authors
generally encourage users to send in "wish-lists" of desired
features, and are quite responsive to those requests.
There are of course also advantages to the authors who use Shareware
to distribute their products. The cost of launching a new product
via Shareware is much less than via normal commercial channels.
This has allowed smaller software houses to market innovative and
highly specialised software that would otherwise simply not be
profitable. Running costs are also lower as there are almost no
marketing or advertising costs.
The software industry is currently going through a consolidation
phase with the big-guns buying each other, and some of the smaller
guns, out. But a significant number of the small companies have
switched to Shareware and have made some really top class software
available via this route.
Water and Steam Properties - Version 1.2 Page 19
Getting an Up-to-date Evaluation Copy
=====================================
If your evaluation copy of WASP is more than a few months old and
you want to get the latest copy for evaluation there are three
routes you can follow to check what is available.
The first is to contact any ASP affiliated disk vendor or BBS. All
major upgrades are distributed via the ASP CD to all vendor and BBS
members. They should always have a fairly new version.
The second is CompuServe. The latest version is always uploaded to
the IBM Applications Forum. Using your usual CompuServe
communications software GO IBMAPP and then search LIB 13
"Tech/Eng/Sci" for WASP.ZIP.
In an effort to make it easier for you to obtain your favourite
software, the latest updates of WASP and many other ASP authored
programs can be found on the BBSs listed below. These BBSs are
members of the ASP Hub Network (AHN).
Zone 1 - East Coast USA
North-East Coast Mid-East Coast
[Site #1] [Site #2]
The Consultant BBS The Break RBBS <East>
Jay Caplan Bruce Jackson
P.O. Box 8571 4660 Whitaker PL
New York NY 10116-4655 Dale City, VA 22193-3011
Data1) 718-837-3236 Data1) 703-680-9269
Data2) Data2) 703-551-0000
Zone 2 - North Mid-USA Zone 3 - Southern Mid-USA
[Site #3] [Site #4]
The Twilight Zone The DataExchange BBS
John Hrusovszky Don Morris
1119 E. Main St 119 Herring St.
Auburndale, WI 54412 Leesville, LA 71446
Data1) 715-652-2758 Data1) 318-239-2122
Data2) Data2)
Zone 4 - West Coast USA
[Site #5] [Site #6]
Attention to Details BBS Space BBS
Clint Bradford Owen Hawkins
5085 Trail Canyon Dr PO Box X
Mira Loma CA 91752 Menlo Park, CA 94026
Data1) 909-681-6221 Data1) 415-323-4398 (ASP)
Data2) Data2) 415-323-4193 (Other)
Water and Steam Properties - Version 1.2 Page 20
Zone 5 - Canada
[Site #7]
Knightec BBS
Phil Knight
35 Robb Blvd #6
Orangeville, ONT L9W 3L1
Data1) 519-940-0007
Data2)
These BBSs are bound by special agreement with the ASP.
In the case of a dispute contact the ASP Ombudsman.
WASP Licensing Policy
=====================
This section describes the WASP licensing policy. The WASP licence
agreement is basically the usual Shareware policy. Recipients of
copies of the WASP package are requested to use the system for a few
weeks to determine its value. You only need to pay for it if you
believe that it offers the value of the asking price. If it does
not meet your needs or standards then it costs you nothing. WASP
can be bought either as a single-user system for US$ 40.00 or as a
multi-user site licence for US$ 75.00 (or the equivalents in SA
Rands).
The single-user licence entitles you to install the package onto
several different computers on a single site, provided that it is
not run on more than one machine at a time. If it is likely that it
will be run simultaneously on two or more machines we request that
you purchase a site licence.
In return for your registration fee we will send you a copy of the
latest version of WASP with your company's name listed as the
licence holder on the title screen.
We do not send printed copies of the manual to purchasers of WASP.
Instead there will be a file containing the manual on the disk for
you to print out (just like this manual). This is done for three
reasons. Firstly it keeps the price down, secondly it allows
revisions and improvements to be included immediately rather than
having to run down stocks of old manuals, and thirdly we believe
that well-written software should not need a manual ! What is your
attitude to manuals ? Do you read them ? Please let us know if you
feel a printed copy is important.
What else do you get for being honest and sending in your
registration fee ? Well, we can't promise to fill your mail box
with junk mail, but if you don't register we have no way of telling
you of updates and of our other software products.
Water and Steam Properties - Version 1.2 Page 21
Registered users are also entitled to 12 months support by mail. If
you have any problems please write and we will do our best to help.
Registration also gives you the opportunity to influence the
development path for WASP. We would like to hear of any features
you would like to see added to WASP. Are there units that you use
that we have not built in ? Let us know and if they are anything
more reasonable than bathtubs/fortnight we will build them in. Are
there standard calculations that you would like built in ? If so
please send details and samples.
Whether you register or not, may we request that you give away
copies of WASP to your friends, colleagues, customers, suppliers,
students and anyone else who would have a use for it. We would also
appreciate it if copies are uploaded to BBSs.
The only restriction on distribution is that we ask that you always
give away copies of the full system with all its files, and that
they are not modified in any way. The full list of files is given
in the section on Installation and Startup at the beginning of this
manual.
Suppliers of hardware and software may bundle WASP with any of their
other products, subject to the above restriction, and that it is
clearly stated that any payment made is solely for the other product
and not for WASP.
Software Support Policy
-----------------------
If registered users have problems that they cannot solve by reading
the on-line help or the manual, they are entitled to support via
mail for a period of 12 months from the date of registration.
When describing the problem please be as detailed as possible.
Screen dumps may be useful in this regard (press <PRINT SCREEN>
while the screen in question is being displayed). If you have
operational problems include details of your hardware, operating
system, resident programmes and so on.
Write to us at Katmar Software
PO Box 654
Westville 3630
South Africa.
If you have a CompuServe address please include it and we will reply
by e-mail if it is feasible. Registered users can also contact us
on CIS 100100,2050.
It is ASP policy that if an unresolvable problem occurs within 3
months of purchase the customer is entitled to a refund of the
registration cost.
Water and Steam Properties - Version 1.2 Page 22
Registration Procedures
-----------------------
There are three different ways in which you can pay for your WASP
registration. The first method is to place your order with PsL
using your credit card. This can be done by telephone, fax or mail.
The second is specifically for members of CompuServe. If you use
this method, the cost of registration will be added to your
CompuServe bill. The third method allows you to pay by mailing a
cheque or money order directly to us. Your registered copy of the
software will be sent to you from Katmar Software, whichever method
you use.
Payment by Credit Card
You can order with MC, Visa, AmEx, or Discover from Public
(software) Library by calling 800-2424-PsL from within the USA or
713-524-6394 from other countries, or by FAX to 713-524-6398 or by
CIS E-mail to 71355,470. You can also mail credit card orders to
PsL at PO Box 35705, Houston, TX 77235-5705. An order form that you
can use for FAX or mail purposes is included in the Appendix, or you
can print one out by running the programme and pressing <Alt R> at
the Shareware Distribution screen. The product code for WASP is
#11376.
THE ABOVE NUMBERS ARE FOR ORDERS ONLY
-------------------------------------
Any questions on the status of the shipment of the order, refunds,
registration options, product details, technical support etc must be
directed to Katmar Software, PO Box 654, Westville 3630, South
Africa. To insure that you get the latest version, PsL will notify
us by E-mail the day of your order and we will ship the product
directly to you.
Payment via CompuServe
If you have a CompuServe ID this is the easiest way to register.
Log onto CompuServe in the normal way and then GO SWREG. Select
"Register Shareware" from the menu. After some legalese a list of
search criteria will be displayed. Select option 1 to search by
Registration ID. Enter the WASP registration ID, which is 3263 for
a single user licence (US$ 40.00) or 3264 for a multi-user site
licence (US$ 75.00).
CompuServe will display some details on WASP and then ask you to
confirm that you want to register. Press "Y" to start the
registration process. You will be asked to give the following
information :-
Water and Steam Properties - Version 1.2 Page 23
Your full name
Your company name
Your complete address
Your telephone number
Number of copies to register.
Select VIEW to check that the information you entered is correct,
and then SEND to complete your registration. CompuServe will advise
us of your registration via E-mail, and we will send your registered
version immediately.
Payment by Cheque or Money Order
If you do not have a credit card, or access to CompuServe, you can
pay by cheque or money order. The order form that must accompany
your cheque can be produced in one of two ways. The easiest way is
by running WASP and then pressing <Alt R> at the Shareware
Distribution screen and answering the questions. This will print
the completed form on your printer. This also has the advantage
that we will not have to decipher your hand writing and will be able
to address your package accurately!
The order form is also contained in the file REGISTER.DOC on the
distribution disk. This file can be printed out and filled in
manually, or loaded into your word processor for completion and
printing. A copy of REGISTER.DOC is attached to the end of this
manual.
Send your order form plus cheque or money order to :-
Katmar Software
PO Box 654
Westville 3630
South Africa
Registration to Engineering Schools
-----------------------------------
Any University or Technical College involved in the tertiary
education of engineers can obtain a licence for WASP free of charge.
In order to get your registered copy of the latest version please
fill in the registration questionnaire in the normal way and get
your Head of Department to write a covering letter on your School's
official letterhead, but send NO MONEY.
All that we ask in return is that you make the registered copy
available to all students and staff so that we do not get duplicate
requests, and hopefully the students will take their copies with
them when they go out into industry.
University registrations must be sent directly to Katmar Software in
Water and Steam Properties - Version 1.2 Page 24
South Africa. Please do not register via PsL or CompuServe, as you
would then be billed for your registration.
ASP's Ombudsman Policy
======================
This program is produced by a member of the Association of Shareware
Professionals (ASP). ASP wants to make sure that the shareware
principle works for you. If you are unable to resolve a shareware-
related problem with an ASP member by contacting the member
directly, ASP may be able to help. The ASP Ombudsman can help you
resolve a dispute or problem with an ASP member, but does not
provide technical support for members' products.
Please write to the ASP Ombudsman at 545 Grover Road, Muskegon, MI
49442-9427 USA, FAX 616-788-2765 or send a CompuServe message via
CompuServe Mail to ASP Ombudsman 70007,3536.
Bug Reports and Wish Lists
==========================
We have put many hours into the checking of this programme and were
not aware of any bugs at the time of release. However, we are also
aware that the most subtle bugs are unearthed after release. We are
therefore most grateful to those who report bugs to us. Please give
as much detail as possible on the bug so that we can re-create the
circumstances on our equipment. Please include details of your
hardware, operating system, resident programmes and so on.
Our experience gained over many years and with the development of
several packages has shown us that no matter how much effort we put
into designing and planning we can never hope to match the combined
creativity of our users. We would like to hear of any features you
would like to see changed or added to WASP. Are there units that
you use that we have not built in ? Let us know and if they are
anything more reasonable than bathtubs/fortnight we will build them
in. Are there standard calculations that you would like built in ?
If so please send details and samples. Would you like to be able to
use WASP on operating systems other than DOS ? Are there any
operations in WASP that are awkward and not intuitive or standard ?
Let us know how you would prefer it to be.
Revision History
================
Jul 93 Version 1.00. First release to selected sites for
final testing.
Nov 93 Version 1.01. Initial public release of WASP.
Jan 94 Version 1.02. Minor cosmetic improvements,
particularly to documentation. Thanks to PDSL(UK)
and others for helpful suggestions in this regard.
Water and Steam Properties - Version 1.2 Page 25
Apr 94 Version 1.1. Documentation and on-line help changed
to meet ASP requirements.
Aug 94 Version 1.2. Fixed fatal error in low temperature
liquid isothermal compressibility calculation. Added
wet steam properties. Added search functions for
enthalpy, entropy and density.
Other Engineering Packages from Katmar Software
===============================================
Our aim at Katmar Software is to provide top quality process
engineering utility software at realistic prices. WASP is the first
of our packages to be released. Other applications that we have in
various stages of development between conceptual design and beta
testing are more physical property database and estimation packages;
flow calculations in pipes, valves and orifices; process equipment
design and evaluation programmes and so on.
As soon as these packages are released as shareware we will advise
all registered users of WASP. If there are particular application
areas where you have a need for low cost utilities please let us
know as we would like to focus our limited resources where they will
be most effective.
Appendix
========
WASP Registration Form
----------------------
The following registration form is provided for those who would like
to fill in their order form manually. You can also complete the
registration form by loading the file REGISTER.DOC into your word
processor and filling in the missing information before printing it
out. Probably the easiest way to register is to run the WASP
programme and press <Alt R> at the Shareware Distribution Screen.
The programme will ask you the questions and you can type your
information directly into the programme. It will then print out the
registration form on your printer.
Also provided is a form for ordering by credit card from PsL if you
are using FAX or mail.
Water and Steam Properties - Version 1.2 Page 26
I N V O I C E
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Katmar Software
PO Box 654, Westville, 3630, South Africa
Date : ...................
Ordered By :- Order Number : ...........
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Name : ..................................................
Job Title : .............................................
Department : ............................................
Company : ...............................................
Address : ...............................................
...............................................
Town : ...............................................
State : .................................................
Postal / ZIP Code : .....................................
Country : ...............................................
Supply :- ( please delete as appropriate )
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1 copy of WASP (single user licence) at US$40-00
1 copy of WASP (multi-user site licence) at US$75-00
The single-user licence allows you to install the programme
onto several different computers belonging to the same
organisation and on the same premises, but only one copy
may be run at a time. If there is a likelihood that the
programme will be run simultaneously on two or more
machines we ask that you purchase a multi-user site licence.
SUM Enclosed : US$ .............
Enclose a cheque or money order for the above amount. No
purchase orders or COD's will be accepted. If ordered from
within the South African monetary area payment may be made in
Rands at the current exchange rate.
Additional Information
----------------------
My E-mail address is : .......................................
My telephone number is : .....................................
My FAX number is : ...........................................
My company's main business is : ..............................
As a Shareware distributor we rely heavily on others to do our
"marketing" for us. We would therefore greatly appreciate you
giving us the following information so that we can ensure that
the good folks doing our marketing can be kept supplied with
the latest versions of the programmes.
How did you obtain your evaluation copy of WASP ?
Tick one of the following :-
.... Friend / Associate
.... User Group / Computer Club
.... Shareware Disk Distributor
.... Bulletin Board
.... CD-ROM ( Please specify ............................)
.... Other ( Please specify .............................)
Address of source of evaluation copy (if known)
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
The version number of my evaluation copy is .................
and it was registered to :-
.............................................................
Our experience has shown us that no matter how much thought and
effort we put into designing our software, we can never design
as good a programme as our users can. We therefore greatly
appreciate your input on what are the good and bad points of
WASP. If there is insufficient space on the following page
please feel free to add in extra sheets of paper.
What aspects of WASP do you like least and how would you like
to see them improved ? :-
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
What facilities would you like to see added to WASP ? :-
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
Do you have any other general comments ? :-
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
Thank you very much for your order
and for providing this information.
ORDER FORM FOR CREDIT CARD PURCHASES BY FAX OR MAIL
===================================================
Use this form only if you are ordering by FAX or mail from Public
(software) Library. DO NOT SEND CREDIT CARD ORDERS DIRECT TO KATMAR
SOFTWARE. Send the completed form to :-
Public (software) Library
PO Box 35705
Houston
TX 77235-5705
United States of America
FAX 713-524-6398
Registration for : WASP by Katmar Software
(product code #11376)
Licence fee : Single user US$ 40-00 (prices incl of)
: Site Licence US$ 75-00 (post & packing)
Delivery Details
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Your Name : ____________________________________
Your Company Name : ____________________________________
Your Address : ____________________________________
____________________________________
____________________________________
____________________________________
Credit Card Details
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Name as on Card : ____________________________________
Credit Card type : MC / Visa / AmEx / Discover
Credit Card Number : ____________________________________
Expiration Date : _____________________ ( mm/yy )
Total Amount in US$ : _____________________ (see costs above)
Signature : ____________________ Date : ________
