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Solarguy2018

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Posts: 15
Reply with quote  #21 
Hi Greg

Would the best way to build a solar furnace be with PV or would you have other potential ways of creating heat

Thanks
Lyndsey

gbwillson

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Posts: 2,305
Reply with quote  #22 
Lyndsey-

It would be quite inefficient to use PV to produce heat, but you could use PV to power fans blowing air through a solar air heater. A small collector could use 12v computer type fans. Although with a large collector it becomes more difficult as the airflow requirements can rather high, this is especially difficult when using small computer fans. There are PV powered attic ventilation fans that would move enough air, but they tend to be rather loud. Best suggestion would be to build a collector using household current to power a fan so you know the CFM requirements of your collector. At a later date you could experiment with using PV to power your collector with DC fans.

Greg in MN
Solarguy2018

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Posts: 15
Reply with quote  #23 
Hi Greg so the best way to build my collector would be to use aluminum downspout from somewhere like Home Depot or Lowe’s then put it all into a wooden frame?

Thanks
Lyndsey
gbwillson

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Reply with quote  #24 
Best way? There isn't really a BEST way. Every collector build can have merit. While you can use aluminum cans or downspouts for your collector, using window screen is less expensive than downspouts and easier to build than cans. In any case, the screen, or cans, or downspouts are placed inside a box, insulated, ventilated, and the heat is moved into your home.

Greg in MN
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