Thermosiphon solar water heater having freeze rupture protection

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Details

126434, 126437, 126452, F24J 244

Patent

active

045999945

ABSTRACT:
A thermosiphon solar water heating system includes a solar energy collector coupled to an elevated heated water storage tank. Water at about 4.degree. C. is produced and used to displace colder, less dense water in the solar collector, thereby establishing circulation through the system which controls freezing and prevents rupturing. Denser water is produced by mixing cold water of less than 4.degree. C. rising from the solar collector with warmer water greater than 4.degree. C. in the storage tank. The denser water is directed by gravity to the solar collector.

REFERENCES:
patent: 1849266 (1932-03-01), Bentz
patent: 2311579 (1943-02-01), Scott
patent: 4165735 (1979-08-01), Smith
patent: 4409962 (1983-10-01), Riley

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