Evaporation heat exchanger, especially for a spacecraft
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United States of America Patent
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Mar 1, 1994
Grant Date -
N/A
app pub date -
Nov 3, 1992
filing date -
Nov 11, 1991
priority date (Note) -
Expired
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Abstract
An evaporation heat exchanger having at least one active circulating circuit for a coolant liquid to be cooled, is constructed for removing heat in a spacecraft under a gravity-free operating condition and under different acceleration conditions. For this purpose, a housing encloses an evaporating space provided with at least one inlet valve for controlling the admission of a medium to be evaporated. The produced vapor or steam is discharged through a respective outlet port. A plurality of cooling tubes interconnected in a meandering shape form a number of tube panels in which the individual tubes are arranged with a different spacing from one another in a direction from the inlet valve to the outlet port. Preferably, these spacings increase in the flow direction from the inlet port to the outlet port to establish a constant flow speed for the evaporating medium. The tubes forming a panel may be arranged in a zig-zag pattern within the panel.
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