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The mechanical design of a vapor compressor for a heat pump to be used in spaceA heat pump developed for use in Spacelab as a stand-alone refrigeration unit as well as within a fluid loop system is discussed. It will provide an active thermal control for payloads. Specifications for the heat pump were established: (1) heat removal rates at the source; (2) heat source temperatures from room temperature; (3) heat-sink fluid temperatures at condenser inlet; and (4) minimum power consumption. A reversed Carnot cycle heat pump using Freon 12 as working fluid incorporating a one-cylinder reciprocating compressor was selected. The maximum crankshaft speed was fixed relatively high at 100 rpm. The specified cooling rates then made it necessary to select a cylinder volume of 10 cu cm, which was obtained with a bore of 40 mm and a stroke of 8 mm.
Document ID
19820015492
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Berner, F.
(Federal Aircraft Establishment Emmen, Switzerland)
Oesch, H.
(Federal Aircraft Establishment Emmen, Switzerland)
Goetz, K.
(Federal Aircraft Establishment Emmen, Switzerland)
Savage, C. J.
(ESA)
Date Acquired
August 10, 2013
Publication Date
May 1, 1982
Publication Information
Publication: NASA. Kennedy Space Center The 16th Aerospace Mech. Symp.
Subject Category
Fluid Mechanics And Heat Transfer
Accession Number
82N23366
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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