Journal
APPLIED THERMAL ENGINEERING
Volume 55, Issue 1-2, Pages 113-120Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.applthermaleng.2013.03.001
Keywords
Low temperature hot water; Adsorption; Air-conditioner; Cooling capacity; COP
Funding
- Natural Science Foundation of China [51206105, 51020105010]
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The processes of mass recovery and heat recovery in one micro-porous silica gel-water solar adsorption air conditioner were investigated. The influences to MH recovery (mass-heat recovery) performances under different working conditions were studied. The result shows when the hot water temperature is lower, longer mass recovery time is needed for the re-adsorption of the cold adsorbent bed and redesorption of the hot adsorbent bed. Meanwhile, the process of heat recovery can recover heat to improve Coefficient of Performance (COP) of the system. When the hot water inlet temperature (T-h,T-i), cooling water inlet temperature (T-c,T-i) and chilled water outlet temperature (T-ch,T-o) are about 55 degrees C, 26 degrees C, 16 degrees C, the COP is 0.31 in the cycle with 180 s of mass recovery while the COP is 0.27 in the cycle with 90s of mass recovery. When the T-h,T-i, T-c,T-i and T-ch,T-o are 80 degrees C, 30 degrees C and 15 degrees C, the cooling capacity and COP are 153 kW and 0.5 in the cycle without heat recovery, while in the cycle with 30 s of heat recovery, the cooling capacity, COP and specific volumetric power can arrive 15.8 kW, 0.53 and 20.6 kW m(-3). (C) 2013 Elsevier Ltd. All rights reserved.
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