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- Path: sparky!uunet!seismo!skadi!stead
- From: stead@skadi.CSS.GOV (Richard Stead)
- Newsgroups: sci.energy
- Subject: Re: Energy Ideas - HVAC-2
- Message-ID: <51735@seismo.CSS.GOV>
- Date: 1 Jan 93 21:36:56 GMT
- References: <1466300134@igc.apc.org> <1466300143@igc.apc.org>
- Sender: usenet@seismo.CSS.GOV
- Lines: 39
- Nntp-Posting-Host: skadi.css.gov
-
- In article <1466300143@igc.apc.org>, ei@igc.apc.org (Essential Information) writes:
- > Advantages of Fuel Cells
- >
- > The main advantage of the fuel cell is the reduced emission of
- > air pollutants. According to an article in the May 22, 1992 Los
- > Angeles Times ("The Natural Gas-Powered Fuel Cell System," p.
- > D1), a natural gas fuel cell emits only 1,130 pounds of carbon
- > dioxide and 0.02 pounds of nitrogen oxide per megawatt-hour
- > (MWh), while a conventional power plant (presumably coal-fired)
- > emits 1,485 pounds of carbon dioxide and 5.74 pounds of nitrogen
- > oxide. The reduction in carbon dioxide emissions may be
- > attributed to both a slightly higher electricity generation
- > efficiency (42 percent as opposed to 34 percent for combustion)
- > and the use of natural gas instead of coal, which contains less
- > carbon per unit of energy. The reduction in nitrogen oxide
- > emissions may be attributed to the lower operating temperature of
- > the fuel cell as compared to a conventional power plant. In
- > addition, the use of natural gas eliminates emissions of volatile
- > organic compounds (VOCs) and sulfur dioxide, which lead to acid
-
- Like a lot of the articles being posted in this series, this is
- basically a very good, informative article. But it discredits itself
- somewhat by insisting on making poor comparisons, thus pumping up
- the benefits of the technology it is advocating unnecessarily.
- Fuel cells are a great technology and should eventually prove to
- be inexpensive and reliable and less polluting. So why not compare
- fuel cells to gas-fired electric? Why is it necessary to compare it
- to coal-fired? It is well-known that coal is "dirty", so the comparison
- just brings the reaction "so what?" I'm sure the comparison to
- gas turbines would still come out in the fuel cell's favor, and
- this would be a better argument for fuel cells. Otherwise, it is
- really just an argument for natural gas over coal.
-
-
- --
- Richard Stead
- Center for Seismic Studies
- Arlington, VA
- stead@seismo.css.gov
-