Scott, I just read through this thread, after you referred to it from my very similar (sorry
) thread. We basically have similar goals.
Someone over on my thread suggested I utilize "pop can solar heaters" instead of PV. I spent this evening researching them (google "pop can solar heater", or here is a good link to start with) and I think it is definitely the low cost, more efficient solution.
They are cheap to build, won't destroy anything if they fail, and can get incredibly hot. If you can shunt their heated air into some kind of heat sink it might be enough to raise local temperatures enough to melt ice.
For my purpose, providing passive heat to the the coop during the winter, I am thinking about building a small pop can heater and sending its heat through a series of gravel-filled 5 gallon buckets inside the coop. The gravel will act as the heat sink and radiate heat out during the night.
Anyway, might want to look into the pop can heaters. I'd never heard of them but they seem like a great idea.

Someone over on my thread suggested I utilize "pop can solar heaters" instead of PV. I spent this evening researching them (google "pop can solar heater", or here is a good link to start with) and I think it is definitely the low cost, more efficient solution.
They are cheap to build, won't destroy anything if they fail, and can get incredibly hot. If you can shunt their heated air into some kind of heat sink it might be enough to raise local temperatures enough to melt ice.
For my purpose, providing passive heat to the the coop during the winter, I am thinking about building a small pop can heater and sending its heat through a series of gravel-filled 5 gallon buckets inside the coop. The gravel will act as the heat sink and radiate heat out during the night.
Anyway, might want to look into the pop can heaters. I'd never heard of them but they seem like a great idea.