Date of Publication:2021-01-01

Journal:Huagong Xuebao/CIESC Journal

Volume:72

Issue:3

Page Number:1457-1464

ISSN No.:0438-1157

Abstract:The working fluid pair is the energy conversion medium when the absorption heat pump is working, which directly affects the performance of the entire system. However, existing research on working fluid pairs focuses on the experiment and the measurement of the physical properties of a specific system or design and prediction of pure working fluid. The property prediction and design of unknown working fluid pairs is insufficient. Through the method of computer-aided molecular design and synchronous modeling and optimization of absorption heat pump system, a MINLP model is established with the maximum of COP as the objective function which is able to predict the performance of new working fluids. Based on the 7 basic elements, specific heat capacity group contribution model of 12 common groups are established, which are applied to the model, and 5 available working fluid pairs are obtained. Finally, the designed working fluid pairs are compared with the original data, which verifies the efficiency of the method. © 2021, Editorial Board of CIESC Journal. All right reserved.

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