frankenstoen wrote:I think underground is better than above ground, unless it's 35 degrees out, of course. Cold air flows downwards, so opening a door wouldn't lose as much.
Anyone know what the ideal salt concentration (water: salt ratio) would be?
Franklin Stone wrote:Insulation is a decoupling of thermal mass, to prevent the transmission of heat energy. Underground is not insulated, but rather, buffered by a large thermal mass. The ground temperature below the frost line is usually the average of your year-round temperatures.
Beware the other head of science - it bites! Nibble on this message:
Rocket Mass Heater Plans: Annex 6" L-shaped Bench - now FREE for a whilehttps://permies.com/wiki/138231/Rocket-Mass-Heater-Plans-Annex