Solar swimming-pool water heater

Stoves and furnaces – Tool having fluid fuel burner – Soldering iron

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Details

126426, 165174, 165176, F24J 302, F28D 706

Patent

active

043123236

ABSTRACT:
A body of water having a liquid level and an outer edge is provided with a water heater having a collector formed as an array of adjacent and substantially concentric annular flexible tubes that surround the body at the edge and that has a rectified equal to at least 30 times its horizontal cross-sectional width. The tubes have exposed upper surfaces and feed ends connected to a feed manifold and return ends connected to a return manifold. Respective feed and return conduits are connected to the feed and return manifolds and both open into the body of water below the liquid level thereof. A pump is provided in one of the conduits for drawing water from the body into the feed conduit, then passing it sequentially through the feed conduit, the feed manifold, the tubes, the return manifold, and the return conduit, and for expelling the water into the body from the return conduit. The array has a surface area equal to approximately 50% of the surface area of the body of water being heated, and the pump is relatively small so that at most a 2.degree. C. temperature gradient is obtained between the feed and return manifolds.

REFERENCES:
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patent: 4153955 (1979-05-01), Hinterberger
patent: 4187901 (1980-02-01), Coleman
patent: 4195621 (1980-04-01), Firebaugh
patent: 4211213 (1980-07-01), Nissen et al.

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