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fresnel lens

 
Posts: 5
Location: Southwest Missouri
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A possible use of a fresnel lens.....Make alot of HOT water.....showers, home heating.
 
gardener
Posts: 2671
Location: Central Texas zone 8a
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Wouldn't the same size glass spread over a larger solar collector (not focused) produce as much hot water without having to re- aim every three minutes?

If you want steam or looking for some sort of on demand you may be on to something.
 
Die Fledermaus does not fear such a tiny ad:
skiddable shower
https://permies.com/t/39038/permaculture-projects/skiddable-shower
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