Passive system for heat transfer

Details Passive system for heat transfer Passive system for heat transfer

1985-01-23

1986-09-16

Davis, Jr., Albert W.

Heat exchange

Intermediate fluent heat exchange material receiving and...

Liquid fluent heat exchange material

16510429, 417209, 417208, 237 64, 126433, F28D 1500

Patent

active

046116540

ABSTRACT:
A passive heat transfer system is provided wherein the vapor generated by the boiling of a working fluid is harnessed to transport the working fluid from a heat source to a heat sink below the heat source. A passive circulation unit is installed in a heat transfer system between the outlet port of a heat collector and a collector drain duct that leads to a heat sink that is positioned below the heat collector. In preferred embodiments, a collector feed duct permits fluid to return to the heat collector from the heat sink and a check valve prevents flow in the opposite direction. The passive circulation unit includes an upper chamber and a lower chamber disposed in vertical array, with the lower end of the lower chamber being positioned above the heat collector outlet port. In the simplest embodiment the two chambers are connected by a vent duct that leads from the bottom region of the lower chamber to the top region of the upper chamber. The collector drain duct connects to an opening in the lower end of the upper chamber. In a second disclosed embodiment, the passive circulation unit is fitted with a valve that intermittently interrupts the flow of working vapor through the lower chamber and thereby causes working fluid to be displaced into the vent duct and expelled therefrom into the upper chamber in a cyclical manner.

REFERENCES:
patent: 1148857 (1915-08-01), Reck
patent: 2226797 (1940-12-01), Andersson
patent: 2230917 (1941-02-01), Triana
patent: 4061131 (1977-12-01), Bohanon
patent: 4110986 (1978-09-01), Tacchi
patent: 4224925 (1980-09-01), Movick
patent: 4241784 (1980-12-01), Tacchi
patent: 4246890 (1981-01-01), Kraus et al.
patent: 4270521 (1981-07-01), Brekke
patent: 4467862 (1984-08-01), DeBeni

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