International Scientific Journal

Thermal Science - Online First

online first only

Environmental tests of vapor compression heat pump for space applications

Heat pumps are needed to provide a suitable temperature for both people and equipment in spacecraft. This paper reports on work designed to see if vapor compression heat pumps, in particular, can be expected to function normally in space. A vapor compression heat pump was built and tested under conditions of high temperature (70ºC), low temperature (0ºC), and near-vacuum (10-4 Pa). It was found that the coefficient of performance of this heat pump was 2.99 at both high and low temperatures, and was 2.1 under near vacuum conditions. The results suggest that vapor compression heat pumps are suitable for use in space.
PAPER REVISED: 2020-08-10
PAPER ACCEPTED: 2020-08-19
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