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- Tue Aug 19, 2014 12:31 pm
- Forum: Alternate Energy Discussions
- Topic: The DIY Passive Solar Window Heater
- Replies: 3
- Views: 19709
The DIY Passive Solar Window Heater
Hello! In the process of constructing these for my Trailer's windows... Just wondering if it would increase the efficiency of the cardboard panel I'm using if I would make the 'lower' slot somewhat larger than the 'top' slot? Would this let more 'cool' air in and 'cause' the 'heated' air to come out...