Heat exchange – Movable heating or cooling surface – Rotary drum
Patent
1992-09-04
1993-10-19
Fox, John C.
Heat exchange
Movable heating or cooling surface
Rotary drum
165110, G05D 2312
Patent
active
052537013
ABSTRACT:
Heat generated, for example, in a spacecraft under zero gravity conditions and different accelerations is discharged through an evaporation heat exchanger connected to at least one active coolant circulation circuit. The heat exchanger has a bundle of tubes axially arranged inside a cylindrical processing chamber. An evaporant passes through these tubes. A coolant flows into heat exchange contact with outer surfaces of said tubes. The outlet cross-sectional flow area for the evaporant, or rather its vapor, is variable so that the pressure of the evaporated medium, and thereby also its evaporation temperature are adjustable. The adjustment of the cross-sectional flow area for the vapor is controlled in response to the temperature of the cooling liquid or coolant where it enters into a processing chamber of the heat exchanger. Selectively closable apertures in an end plate (52) serve for changing the outlet cross-section flow area for the vapor. The apertures are, at least partially, closable by flaps which are controlled by bimetal springs responsive to the temperature of the entering coolant.
REFERENCES:
patent: 2867990 (1959-01-01), Cary
patent: 4595046 (1986-06-01), Sisno
ERNO Raumfahrttechnik GmbH
Fasse W. G.
Fox John C.
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