Frost on Entry Grate
Down below the entry grate is an air tube that penetrates the concrete slab of our tiny cottage. The pipe allows water to drain out from the under-grate area and is one of the controlled ways that we bring fresh air into the cottage to replace what is burned in the woodstove and then goes up the chimney.
This particular air tube does not travel far underground but rather brings in very fresh air. On the past few days when it has been so cold the incoming air chilled the grate such that I saw a bit of frost, moisture drawn out of the air and condensed on the cold metal. You’ll notice that the firewood right there is also experiencing the same chilling effect.
It is very tempting to put an insulated box there and use it for a refrigerator. Eventually I plan to build a refrigerator and freezer that use this principle, but on a different wall. During the warmer months it will use the coolth of our spring and possibly and ice house up hill of us from whence the cold can flow down. Then with a little boost from solid state devices using the Peltier-Seebeck effect. My hope is to get around the inefficiency by having the boost of the spring and the ice.
Outdoors: 9°F/-17°F Sunny
Farm House: 48°F/42°F
Tiny Cottage: 65°F/59°F