home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: sci.energy
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!cs.utexas.edu!sun-barr!ames!purdue!yuma!longs.LANCE.ColoState.Edu!kk881595
- From: kk881595@longs.LANCE.ColoState.Edu (kevin knappmiller)
- Subject: Re: Renewable Energy - solar
- Sender: news@yuma.ACNS.ColoState.EDU (News Account)
- Message-ID: <Nov21.000239.67911@yuma.ACNS.ColoState.EDU>
- Date: Sat, 21 Nov 1992 00:02:39 GMT
- Reply-To: kk881595@longs.LANCE.ColoState.Edu
- References: <Nov18.182720.65718@yuma.ACNS.ColoState.EDU> <51503@seismo.CSS.GOV> <Nov19.233943.21763@yuma.ACNS.ColoState.EDU> <51522@seismo.CSS.GOV>
- Nntp-Posting-Host: princeton.lance.colostate.edu
- Organization: Colorado State U. Engineering College
- Lines: 35
-
- |>If that's the argument, then we also need to consider the energy recovered
- |>and the useful energy expended in this recovery. For a biomass example,
- |>very little useful energy is expended - in some areas pumps may be required
- |>for irrigation and maybe some fertilizer would be required. In addition,
- |>there would be the fuel the tractors use to sow and harvest. This totals
- |>to a very small amount of useful energy. Solar, on the other hand, can require
- |>tremendous investment of useful energy - particularly if solar cells are used.
-
- This is a very important point and must be considered in the overall life
- cycle costs of an energy source, but we are talking about the semantics
- of the term "system efficiency". In the definition that I am familiar with
- these factors are not included in this term.
-
- |> is used first instead of a competing resource? Are you arguing that
- |> someone in the future wants to use it for energy? But who cares -
-
- Keeping reserves for the future might not be a bad idea unless
- you truly don't care at all about future generations.
-
- |>
- |> Or perhaps you are arguing that coal is valuable for other reasons. I
- |> cannot agree with that. Coal has no other use than to produce energy.
- |> Now, oil I can understand. It is vitally important to the chemical
- |> industry and we would not have a lot of our plastics, pharmecueticals,
- |> etc. without it. So I can say, no we shouldn't burn up all our oil.
-
- Very good point. As a matter of fact this argument about oil is
- exactly what I was thinking of.
-
- Kevin Knappmiller
- Solar Lab
- Colorado State University
- Fort Collins, CO 80523
- (303)491-8215
- kk881595@longs.lance.colostate.edu
-