home *** CD-ROM | disk | FTP | other *** search
- Xref: sparky misc.activism.progressive:5314 alt.activism:13391 sci.energy:3600 talk.environment:2929
- Path: sparky!uunet!wupost!sdd.hp.com!uakari.primate.wisc.edu!ames!agate!remarque.berkeley.edu!jym
- From: jym@mica.berkeley.edu (EcoNet via Jym Dyer)
- Newsgroups: misc.activism.progressive,alt.activism,sci.energy,talk.environment
- Subject: NEWS: Pioneer Project: Solar Hydrogn Power
- Message-ID: <EcoNet.19Jul1992.5pm1@naughty-peahen.org>
- Date: 24 Jul 92 00:23:59 GMT
- Followup-To: sci.energy,talk.environment
- Organization: The Naughty Peahen Party Line
- Lines: 80
- Approved: map@pencil.cs.missouri.edu
- NNTP-Posting-Host: remarque.berkeley.edu
- Originator: jym@remarque.berkeley.edu
-
- =o= The attached is interesting, but not the first time this
- kind of approach has been tried.
- <_Jym_>
- ================================================================
- [From EcoNet ecotopia.news Conference]
-
- Pioneer Project: Solar Hydrogen Power
-
- by Elaine Weinreb
-
- A revolutionary experiment with far-reaching energy implications
- is occurring on a quiet hillside in Trinidad.
-
- There Dr. Peter Lehman, HSU engineering professor, is linking
- three types of technology in hopes of producing non-polluting and
- renewable energy that does not contribute to global warming.
-
- Through the support of a private single benefactor, the Schatz
- Solar Hydrogen Project uses photovoltaic modules to capture
- energy from the sun and convert it to electricity, which then
- hydrolyzes water molecules into hydrogen and oxygen in a fuel
- cell to produce power.
-
- Like other systems using the sun and photovoltaics, the amount
- of energy reaching the panels is constantly changing because of
- cloud cover and time of day. ThatUs why energy must be stored
- in some way so that it can be used at a steady rate when needed.
-
- Unconventional
-
- The conventional way of doing this is through batteries, which
- are toxic, heavy, relatively inefficient and use non-renewable
- materials. In the Schatz system, the electrical energy is used
- to separated hydrogen from oxygen.
-
- Hydrogen, one of the most abundant elements on earth, is
- lightweight, compressible and can be transported long distances.
- When combined with oxygen in a fuel cell, electricity is released
- at a 50-60% efficiency rate, far higher than that of the internal
- combustion engine. What's more, the only byproduct is pure
- water.
-
- If used as direct fuel, hydrogen has many advantages over other
- types of combustibles. It produces no carbon dioxide and
- therefore does not contribute to the greenhouse effect.
-
- Wonders of Hydrogen
-
- Unlike natural gas, which is a non-renewable resource, hydrogen
- can be continually remanufactured from water. It does not
- require refineries or mines or logging, and contains no sulfur
- or other polluting chemicals. It can be burned in an internal
- combustion engine, and prototype hydrogen-burning automobiles
- have already been manufactured.
-
- The experiment in Trinidad has been underway for about two years.
- Lehman said that his first problem was developing a computer
- system that could regulate the fluctuating solar energy into the
- steady power source needed to operate an electrolyzer.
-
- Once that problem was solved, Lehman discovered that no hydrogen
- fuel cells were available commercially that met the project's
- needs. The engineering professor, along with colleagues and
- students, is now working on developing his own fuel cell.
-
- Unlike traditional photovoltaic systems, which best serve small
- isolated areas, solar hydrogen would be most economical if
- produced on a large scale, with the hot desert areas becoming
- major energy producers and exporters.
-
- At the present time, the cost of solar-produced hydrogen is still
- about three times the cost of gasoline. But as petroleum becomes
- scarcer and more expensive, and photovoltaics become cheaper and
- more efficient, the environmental and political advantages of
- having a clean domestically produced fuel supply will become more
- apparent.
-
- (From ECONEWS, Newsletter of the Northcoast Environmental Center,
- June 1992. Write 879 9th St., Arcata, CA 95521, or e-mail
- nec@igc.org, for a free copy.)
-