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re: heating a pool?
11 sep 1996
steve wrote:
>i found a way to handle the hose better. just use a hot melt glue gun
>and 500 feet of hose to glue a 6 foot diameter flat coil.
28 ft^2? how much does the hose cost? what next? lay a piece of plywood on
the ground with some 1" beadboard impaled on a few headless nails to guide
the hose, and make a spaced rectangular coil with a 3" gap between tubes, and
some sort of thin concrete fill, with chicken wire on both sides, to cast
sections of a freestanding north wall, with polyethylene film glazing?
>i now have 900 feet of hose in the system.
51 ft^2 of solar collector?
>water entering at 82 degrees came out at 96 degrees at 2 gpm flow.
sounds like (96 f - 82 f)(8 lb/g)(2 g/m)(60 m/hr) = 13,440 btu/hr
out of 300 btu/ft^2/hr x 51 ft^2 = 15,300 btu/hr in full sun.
88% efficient, as a solar collector! :-)
>as i add coils i hope to maintain the temperature thorugh october.
this might work very well with a good pool cover.
nick
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