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Theoretical research of a silica gel-water adsorption chiller in a micro combined cooling, heating and power (CCHP) system

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  • Li, S.
  • Wu, J.Y.

Abstract

A novel micro CCHP system, which is based on a two bed silica gel-water adsorption chiller, is constructed in this work. To reveal the chiller characteristic in this system, a transient model of the adsorption chiller is developed. According to the comparison of the simulated results and experimental data, the presented model shows a good performance in predicting the chiller performance, with both stable and variable heat source temperature. With the analysis of simulated results, it is found that the cooling capacity and the coefficient of performance (COP) of the chiller are influenced significantly by the average value and variation rate of electric load, as well as the average value of cooling load. The water tank also shows a great effect on the chiller performance. To get better performance of the chiller, the water tank should be adopted when the electric load is low or its variation rate is positive, and should not be utilized when the electric load is high or its variation rate is negative. A 500 L water tank is recommended in order to get better performance and acceptable start-up time. Furthermore, to get better performance as well as higher security, a cold accumulator should be adopted.

Suggested Citation

  • Li, S. & Wu, J.Y., 2009. "Theoretical research of a silica gel-water adsorption chiller in a micro combined cooling, heating and power (CCHP) system," Applied Energy, Elsevier, vol. 86(6), pages 958-967, June.
    • Handle: RePEc:eee:appene:v:86:y:2009:i:6:p:958-967
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