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Development of a nonazeotropic heat pump for crew hygiene water heatingA heat pump system is currently under development to produce hot water for crew hygiene on future manned space missions. The heat pump uses waste heat sources and a nonazeotropic working fluid in a highly efficient cycle. The potential benefits include a reduction in peak power draw from 2 to 5 kW for electric cartridge heaters to just more than 100 W for the heat pump. As part of the heat pump development project, a unique high efficiency compressor was developed to maintain lubrication in a zero-gravity environment.
Document ID
19920048731
Document Type
Conference Paper
Authors
Walker, David H. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Deming, Glenn I. (Foster-Miller, Inc. Waltham, MA, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1991
Subject Category
FLUID MECHANICS AND HEAT TRANSFER
Report/Patent Number
SAE PAPER 911341
Meeting Information
International Conference on Environmental Systems(San Francisco, CA)
Distribution Limits
Public
Copyright
Other