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| Design of Refrigeration System for Large Environmental Test Chamber |
| Received:October 13, 2012 Revised:March 01, 2013 |
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| DOI： |
| KeyWord:environmental test cooling load calculation overlapping refrigeration compound cooling |
| Author | Institution |
| MA Guang-shun |
Unit63956of the PLA，Beijing，China |
| MA Zhen-ku |
Unit63956of the PLA，Beijing，China |
| ZHAO Yun-feng |
Unit63956of the PLA，Beijing，China |
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| Abstract: |
| Current situation of refrigeration technology of large low temperature environmental test chamber was analyzed, and compound refrigeration system based on overlapping refrigeration was put forward. Compressors were selected through cooling load calculation. Precise control of environmental test chamber temperature was realized with PID control system based on PLC. |
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