Works in Mars, why not here? Day 591 of 90 !!!

Re: Works in Mars, why not here? Day 591 of 90 !!!

You are mixing apples and oranges (as usual). Bugnalore water heaters are not solar cell powered. That means they do not use the high-tech energy cycle of solar->electric->heat.

They instead are using a very low-tech direct solar->heat cycle by pre-heating intake water going to the heaters. You can accomplish this by putting a coil of water circulated pipes up on your roof. It cuts down on electric bill in tropical areas but it has no large-scale use in colder climates where outside temps drop below freezing.