Solar water heating system

Details Solar water heating system Solar water heating system

1984-10-10

1986-03-11

Dority, Jr., Carroll B.

Stoves and furnaces

Tool having fluid fuel burner

Curling iron

126437, F24J 230

Patent

active

045747792

ABSTRACT:
An active solar hot water system includes a solar collection unit, a heat exchanger, and a draindown tank, ordered respectively in vertically descending relation. A pump for drawing thermally conductive recirculation fluid from the draindown tank and delivering same to the collection unit is positioned horizontally adjacent the draindown tank for positive gravity prime. The heat exchanger is disposed either within or is coiled exteriorly about the lower portion of a water storage tank, for conducting heat to potable water within the storage tank. Upon system shutdown, the thermally conductive fluid drains substantially solely into the draindown tank, providing freeze protection for the collection unit and minimizing heat drain off from the water storage tank through the heat exchanger.

REFERENCES:
patent: 4287879 (1981-09-01), Roark
patent: 4397294 (1983-08-01), Mancebo

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