home *** CD-ROM | disk | FTP | other *** search
- Xref: sparky sci.energy:5512 sci.environment:12811 talk.environment:4646
- Newsgroups: sci.energy,sci.environment,talk.environment
- Path: sparky!uunet!charon.amdahl.com!pacbell.com!sgiblab!zaphod.mps.ohio-state.edu!magnus.acs.ohio-state.edu!usenet.ins.cwru.edu!agate!doc.ic.ac.uk!mrccrc!warwick!pipex!ibmpcug!impmh!dsg
- From: dsg@impmh.uucp (Dave Gordon)
- Subject: Re: Request: info on desalination and solar energy
- Message-ID: <1992Nov17.183658.29104@impmh.uucp>
- Organization: Integrated Micro Products Ltd
- References: <0X5SB3MH@cc.swarthmore.edu> <BxoxI6.Jqv@news.cso.uiuc.edu>
- Date: Tue, 17 Nov 1992 18:36:58 GMT
- Lines: 27
-
- In <BxoxI6.Jqv@news.cso.uiuc.edu> lnosek@ux4.cso.uiuc.edu (Luke Nosek) writes:
- >
- > Yikes! are you sure that it would be feasable to desalinate water
- >with solar energy? I heard that they are making desalination plants in the
- >middle east now - and the reason that they can afford it is because oil is
- >dirt cheap over there - IT TAKES A LOT OF ENERGY TO REMOVE THE SALT FROM
- >SEAWATER - more than the sun could provide unless there were some sort of
- >technological miracle in solar energy.
-
- Yep, it *is* feasible; remember that you can convert sunlight to heat
- (which is all you want for desalination by distillation) with near 100%
- efficiency. Solar radiation is about 1kW/m^2 maximum, say 1/2 that
- on average during the day (we're talking about *hot* countries here),
- so it doesn't take an enormous area to collect significant amounts of
- energy. And you can just use more seawater as the heat sink on the
- condenser side of the still.
-
- Israel already has solar desalination plants, but then I don't think
- oil is "dirt-cheap" there. Maybe the oil-producing countries don't
- use solar, but then maybe they should (if the Israelis would sell them
- the technology ;-).
- --
-
- ===============================================================================
- Dave | dsg@imp.co.uk | +44 753 516599 | "C^i tio ne estas .subskribo"
- ===============================================================================
-
-