Semi-active temperature control for heat pipe heat recovery unit

Details Semi-active temperature control for heat pipe heat recovery unit Semi-active temperature control for heat pipe heat recovery unit

1977-06-17

1979-04-03

Davis, Jr., Albert W.

Heat exchange

Movable heating or cooling surface

Rotary drum

165105, 165DIG12, F28D 1500

Patent

active

041472063

ABSTRACT:
A selected number of heat pipes, located in the front rows of a plurality of otherwise operable heat pipes which are disposed between intake and exhaust ducts, have liquid-trap sections extending into a switching section. During normal operation, reservoirs in the switching section are dry and the plurality of heat pipes operate in a conventional manner. However, if some of the heat pipes in the exhaust dust become frosted over or otherwise too greatly cooled due to excessive cold in the intake duct, thermostatically or command-controlled valves or louvres cause the fluid stream in the exhaust duct to warm up or defrost the excessively cooled heat pipes therein. Prevention of excessive cooling is used to avoid frost build-up in air conditioning equipment, or solidification of solids and condensation of corrosive liquids.

REFERENCES:
patent: 2402415 (1946-06-01), Kogel et al.
patent: 3776304 (1973-12-01), Auerbach
patent: 3788388 (1974-01-01), Barbmann
patent: 3893506 (1975-07-01), Laing

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