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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2012, Vol. 13 Issue (5): 375-381    DOI: 10.1631/jzus.A1100107
Energy and Power Engineering     
Experimental study on a −60 °C cascade refrigerator with dual running mode
Xiu-fang Liu, Jiong-hui Liu, Hong-li Zhao, Qiao-yu Zhang, Juan-li Ma
Institute of Refrigeration and Cryogenic Engineering, Xi'an Jiaotong University, Xi'an 710049, China; School of Mechanical and Power Engineering, Henan Polytechnic University, Jiaozuo 454000, China
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Abstract  In this study, an experimental setup is designed and built to investigate the feasibility and performance of the proposed dual-mode cascade refrigeration cycle. The apparatus can be operated in two modes: dual-stage mode and single-stage mode such that the low temperature cycle (LTC) can be operated together with the high temperature cycle (HTC) or can run independently. Experimental results validate the feasibility of independent operation of LTC. The performance of the independent operation of LTC mode is theoretically investigated using experimental data as bases. Detailed suggestions are made for the improvement of the coefficient of performance (COP) of the experimental system. Theoretically, high COP of the cycle provides excellent application for the presented refrigeration cycle.

Key words： Cascade refrigeration      Dual-mode      Regenerator      Optimization      Effectiveness     
Received: 18 April 2011      Published: 04 May 2012
CLC:  TB657.3  
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Xiu-fang Liu
Jiong-hui Liu
Hong-li Zhao
Qiao-yu Zhang
Juan-li Ma
Cite this article:

Xiu-fang Liu, Jiong-hui Liu, Hong-li Zhao, Qiao-yu Zhang, Juan-li Ma. Experimental study on a −60 °C cascade refrigerator with dual running mode. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2012, 13(5): 375-381.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.A1100107     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2012/V13/I5/375

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