Nighttime cooling is possible, it works, and there's some pretty good data being collected about it recently. The actual amount of energy that you can radiate out depends on many factors, including ambient nighttime air temperatures, the dew point in your area, and the emissivity of your collectors. I'd suggest you contact Boaz at Cedar Mountain Solar -- his team has been doing some pretty brilliant designs and research using this approach, both for collector cooling but more interestingly for cooling the living space.
Phil Undercuffler Conergy On Wed, Dec 16, 2009 at 8:53 PM, Nicholas Ponzio < npon...@buildingenergyus.com> wrote: > Apologies if this has already been discussed here. > > One heat diversion method I hear suggested often is recirculating through > the collectors (flatplate) at night. Are there any data, calculations or > anecdotal evidence on the effectiveness of this approach? That is, can I > really radiate as much energy back to a dark sky as I collect during the > day? > > Thanks for any feedback. > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > >
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