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- From: robk@gumby.Altos.COM (Rob Kleinschmidt)
- Newsgroups: misc.consumers.house,misc.rural
- Subject: Re: 12 volt electrical systems (was Re: Power
- Message-ID: <6216@gumby.Altos.COM>
- Date: 27 Jan 93 22:46:45 GMT
- References: <1jlvdmINNhda@usenet.INS.CWRU.Edu>
- Reply-To: robk@altos.COM (Rob Kleinschmidt)
- Followup-To: misc.consumers.house
- Organization: Altos Computer Systems, San Jose, CA
- Lines: 100
-
- In article <1jlvdmINNhda@usenet.INS.CWRU.Edu> bj368@cleveland.Freenet.Edu (Mike E. Romano) writes:
-
- [re stand-alone power system for a home]
-
- >This is very interesting.
- >I would like to hear of any reference books on the more
- >improved electrical systems for independent power home,
- >source material, especially for do it yourselfers since
- >I am collecting info and preparing to build my own home
- >in the near future.
- >Also if Mr. Kleinschmidt is using solar, wind, etc. for
- >generate any of this power, or small hydro would also
- >be of informative value.
-
- Best book on the subject I have ever seen:
-
- "How to Design An Independant Power System" by Terrance D. Paul.
- (Best Energy Systems, Necadah (???) Wi. )
-
- I believe this is now out of print, but may be obtainable .
- Mentioned in a misc.rural list of useful publications.
-
- Other addresses of interest:
-
- Home Power Magazine
- POB 130 Hornbrook CA 96044
- Solar PV, wind, water, &etc.
- ($6 subscription)
-
- Real Goods
- 966 Mazzoni St.
- Ukiah Ca. 95482
- (707) 468-9214
- ($10 large annual catalog)
-
- Trace Engineering
- 5917 195th N.E.
- Arlington, WA 98223
- (206) 435-8826
-
- My system is regrettably short on solar, but otherwise pretty
- adequate. Aside from the small number of solar panels, it closely
- parallels a prototype system that our local utility company is
- now developing. My own system was installed in 1988 and generally
- beats rural grid power hands down for reliability.
-
- Major components:
-
- Design : 10 kwh/day (family of 4, large house)
- Generator runs several hours a day for peak load and battery charging.
- Inverter/batteries provide off-hours power. Solar provides 10-15%
- + power when house is unoccupied (vacation trips etc.).
-
- Kohler generator. 7 kw @ 220v. (1800 RPM 4 cyl water cooled flathead w.
- propane hookup. Safety shutdowns for overheating and low oil pressure
- + remote start)
-
- 16 350 AH 6 volt batteries (4x4 array 32 kwh @ 24 volts)
-
- 2 kw Trace inverter (6 kw surge rating)
-
- 6 PV panels + charger. 1.5 kwh/day (should have more).
-
- Todd gen/inverter transfer switch.
-
- IBE 100 amp battery charger (220v A.C. input)
-
- Instrumentation etc.
-
- zero center 100 amp D.C. ammeter
- narrow range D.C. volt meter
- ac voltmeter
- 60 hz. frequency meter.
- remote generator switch
- 40 amp relay hooked to generator shutoff (for clean genset disconnect)
- 2nd cheaper Generac generator 4kw 1800 RPM (backup/portable unit).
-
- Hindsight /wish list:
-
- More solar would be good and should be retrofitted when finances
- permit. Generator is well built, but still less reliable and needs
- more mainenance than electronic components.
-
- Should have low voltage cutout on battery charger to handle surge
- loads on generator.
-
- I would like to rig inductive A.C. ammeters to guage generator
- loading more accurately.
-
- A programmable genset start/stop device would be nice. Current
- system is manual only.
-
- >
- >Mike Romano
- >
-
-
-
- --------------
- R Kleinschmidt
-