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- Path: sparky!uunet!cs.utexas.edu!hellgate.utah.edu!dog.ee.lbl.gov!icarus.lbl.gov!b_nbca
- From: b_nbca@icarus.lbl.gov (Bruce Nordman)
- Newsgroups: sci.environment
- Subject: Re: --Energy and Sustainability
- Date: 25 Aug 1992 20:07:28 GMT
- Organization: lbl
- Lines: 31
- Distribution: world
- Message-ID: <25741@dog.ee.lbl.gov>
- References: <1466601742@igc.apc.org> <1992Aug25.153557.1513@ke4zv.uucp>
- Reply-To: b_nbca@icarus.lbl.gov (Bruce Nordman)
- NNTP-Posting-Host: 128.3.12.154
-
- In article <1992Aug25.153557.1513@ke4zv.uucp>, gary@ke4zv.uucp (Gary Coffman)
- writes:
- |> In article <1466601742@igc.apc.org> tgray@igc.apc.org (Tom Gray) writes:
- |> >
- |> >From: Tom Gray <tgray>
- |> >Subject: --Energy and Sustainability
- |> >
- |> >o World energy use would be held to 30 TWa (about three times
- |> > today's consumption), a reduction of 70 percent below a BAU
- |> > level of 100 TWa (nearly nine times current use). (At the
- |> > same time, global per-capita energy use would be stabilized at
- |> > 3 kW/person, or about one-fourth of present U.S. usage per
- |> > person.)
- |>
- |> These units seem useless to me. 30 Terawatt what? 3 kw/person per
- |> hour, day, week, month, year, what? Power is measured in watts,
- |> energy is measured in watt-hours. This information would be interesting
- |> if it meant anything.
- |>
- |> Gary
-
- This information does infact mean something. As you said, power
- is measured in watts. If all the energy were electricity (which
- of course it isn't), it would be flowing at that rate. Converting
- to energy, as you noted, requires multiplying by a time unit, so
- 30 TW for one hour is 30 TWh. 30 TW for one year is 30 TWh - 8766
- hours/year = 262980 TWh, or more correctly 260000 TWh. I haven't
- checked the actual numbers, but the units seem sound.
-
- Bruce Nordman
- B_Nordman@lbl.gov
-