| タイトル | A pumped two-phase cooling system for spacecraft |
| 著者（英） | Ollendorf, S.; Costello, F. A. |
| 著者所属（英） | Costello (Frederick A.), Inc.; NASA Goddard Space Flight Center |
| 発行日 | 1983-07-01 |
| 言語 | eng |
| 内容記述 | A pumped, two-phase heat-transport system is being developed for possible use for temperature control of scientific instruments on future NASA missions. As compared to a single-phase system, this two-phase system can maintain tighter temperature control with less pumping power. A laboratory model of the system has been built and tested. The measured heat transfer coefficients were approximately the same as in heat pipes, 220 Btu/hr-sq ft-F, as compared to 25 Btu/hr-sq ft-F for single-phase liquid flow. Heat shearing between experiments has been demonstrated wherein vapor generated in the cold plate of an active experiment was condensed in a cold, unheated experiment. System stability has been observed. However, additional development is needed. The use of non-azeotropic mixtures of coolants appears especially promising as a simple way to determine exit quality and thus control the flow rates to prevent dryout. |
| NASA分類 | SPACECRAFT DESIGN, TESTING AND PERFORMANCE |
| レポートNO | 84A29034
SAE PAPER 831099 |
| 権利 | Copyright |
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