|
|
re: thermal mass
25 jun 1996
mike dickson wrote:
>i was wondering what was the best material to make a thermal mass out of,
water is good. about 3 times more heat capacity (62 btu/f-ft^3) than rocks
or concrete by volume, with less thermal and airflow resistance, in sealed
containers. iron or steel are almost as good, at 54 btu/f-ft^3, but more
expensive...
>i plan to run pipes through it and heat with hot water from a
>solar collector. any ideas.
sounds complicated and expensive.
>i may just blow air over it instead of running water pipes through it
>if this turns out to be much easier or better.
good idea. using free 55 gallon plastic drums or recycled 5 gallon paint
pails, with lids? or $25 waterbed mattresses holding 300 gallons, or big
cheap circular swimming pools, or plywood boxes or trenches made with a
single 28 cent/ft^2 piece of 20' wide epdm rubber roofing material folded up
like a chinese restaurant takeout box?
nick
|
|
