期刊
APPLIED THERMAL ENGINEERING
卷 192, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.applthermaleng.2021.116950
关键词
Heat/mass recovery; Simultaneous; Efficacy; Adsorption; Desorption
This study introduces a numerical scheme for performance modeling of a commercial-scale adsorption chiller with adaptive heat/mass recovery cycle times. The research predicts that the proposed model of the mass recovery cycle can significantly improve the performance of the adsorption chiller compared to traditional cycle times.
The previously published literature based on the performance prediction of solar-powered adsorption chillers generally incorporates fixed heat/mass recovery (HR/MR) cycle times which remain unchanged during the entire course of operation of the adsorption chiller. In reality, the dynamics of the HR/MR processes are continuously subject to change due to temporal variations in the solar radiation intensity, and thus fixed HR/MR cycle times might not prove to be compatible with the actual dynamics of a transient solar-powered chiller operation. The current study proposes a numerical scheme for performance modeling of a commercial-scale adsorption chiller with adaptive HR/MR cycle times following the adsorption/desorption (ads/des) cycle. A novel model of the MR cycle has been proposed which, in accordance with the best knowledge of the authors, cannot be find anywhere else in the previously published literature. The ads/des -> HR -> MR -> des/ads half cycle has been predicted to yield an almost 52% higher cycle-averaged value of coefficient of performance (COP), an almost 16% higher value of specific cooling power (SCP), and a roughly 146% higher value of solarCOP (COPsc) than the ads/des -> MR -> HR -> des/ads half cycle over the entire course of operation of the adsorption chiller till sunset.
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