Digital Control System for a Refrigerator Heat Pump for Spacecraft Environment
881044
07/01/1988
- Event
- Content
- 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.
- Pages
- 16
- 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.