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2012, Volume 6, Issue 4

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Frontiers in Energy >> 2012, Volume 6, Issue 4 doi: 10.1007/s11708-012-0207-9

Composite adsorbents of CaCl

1. Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; Graduate University of Chinese Academy of Sciences, Beijing 100049, China; 2. Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China

Available online: 2012-12-05
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Abstract

Composite adsorbents of CaCl and sawdust prepared by carbonization for adsorption refrigeration with NH as refrigerant are tested, and the effects of carbonization temperature on the sorption capacity and rate are analyzed. The results show that the amount of pores in the sawdust of the composite adsorbents carbonized, apart from the content of CaCl , is the most dominant factor influencing the NH sorption on composite adsorbents. The optimum carbonization temperature is 700°C, which gives the maximal NH sorption capacity as high as 0.774 kg of NH per kg of the composite, and the specific cooling power is approximately between 338 and 869 W/kg with the cycle duration varying from 5 to 20 minutes. The present study demonstrates that the composite absorbent of CaCl and sawdust prepared by carbonization is more promising and competitive for adsorption refrigeration application.

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