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Digital Control System for a Refrigerator Heat Pump for Spacecraft Environment
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English
Abstract
This paper describes the development of a microcomputer based control system for a heat pump containing an electrical variable speed compressor drive and a motorized expansion valve. It is designed to operate under very much varying load conditions with minimum power consumption. Difficulties that were encountered during engineering tests could finally be overcome by a relatively simple, practical regulator configuration. It operates near optimum efficiency by regulating a certain temperature difference in the evaporator. Experimental data on operating characteristics and performance are included in the paper.
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Citation
Parnitzki, D., "Digital Control System for a Refrigerator Heat Pump for Spacecraft Environment," SAE Technical Paper 881044, 1988, https://doi.org/10.4271/881044.Also In
References
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- Berner Burger Oesch Parnitzki Development of an Engineering Model Dynamic Cooler Swiss Federal Aircraft Factory 1987, Doc. No. TF-B-1885