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Frontiers in Energy

Front Energ    2011, Vol. 5 Issue (3) : 263-269     https://doi.org/10.1007/s11708-011-0152-z
RESEARCH ARTICLE |
A two-stage deep freezing chemisorption cycle driven by low-temperature heat source
Yuanyang HU, Liwei WANG(), Lu XU, Ruzhu WANG, Jeremiah KIPLAGAT, Jian WANG
Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University, Shanghai 200240, China
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Abstract

A two-stage chemisorption cycle suitable for deep-freezing application driven by low- temperature heat source was proposed. Through two-stage desorption processes, the two-stage cycle can break through the limitations of the heating temperature and ambient cooling temperature. The two-stage cycle based on CaCl2/BaCl2-NH3 working pair can utilize the heat source with a temperature of above 75°C, and simultaneously realize deep-freezing all the year round. Experimental results and performance prediction show that the adsorption quantity of calcium, theoretical coefficient of performance (COP) and optimized specific cooling power (SCP) of the CaCl2/BaCl2-NH3 chemisorption system are 0.489 kg/kg (salt), 0.24 and 120.7 W/kg, when the heating temperature, ambient cooling temperature, pseudo-evaporating temperature and mass ratio of reacting salt and expanded graphite are 85, 30, -20, and 4∶1, respectively.

Keywords adsorption      freezing      desorption      heat source     
Corresponding Authors: WANG Liwei,Email:lwwang@sjtu.edu.cn   
Issue Date: 05 September 2011
 Cite this article:   
Yuanyang HU,Liwei WANG,Lu XU, et al. A two-stage deep freezing chemisorption cycle driven by low-temperature heat source[J]. Front Energ, 2011, 5(3): 263-269.
 URL:  
http://journal.hep.com.cn/fie/EN/10.1007/s11708-011-0152-z
http://journal.hep.com.cn/fie/EN/Y2011/V5/I3/263
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Yuanyang HU
Liwei WANG
Lu XU
Ruzhu WANG
Jeremiah KIPLAGAT
Jian WANG
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