Simulation Study of Belt Refrigeration Structure Based on Electrocaloric Effect

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Simulation Study of Belt Refrigeration Structure Based on Electrocaloric Effect

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[1]MENG Xiangrui,ZHAO Yijie,MA Xinling,et al.Simulation Study of Belt Refrigeration Structure Based on Electrocaloric Effect[J].Journal of Zhengzhou University (Engineering Science),2023,44(02):98-103.[doi:10.13705/j.issn.1671-6833.2022.05.019]

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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 44卷 Number of periods: 2023 02 Page number: 98-103 Column: Public date: 2023-02-27

Title:: Simulation Study of Belt Refrigeration Structure Based on Electrocaloric Effect

Author(s):: MENG Xiangrui; ZHAO Yijie; MA Xinling; GONG Pengzhen; WANG Shougang; School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou 450001, China

Keywords:: solid-state refrigeration; electrocaloric effect; numerical simulation; cooling power density(CPD); P(VDF-TrFE-CFE) terpolymer

CLC:: O241；TB66

DOI:: 10.13705/j.issn.1671-6833.2022.05.019

Abstract:: Based on the electrocaloric effect, a novelty refrigeration device with a ribbon electrocaloric module made of electrocaloric material P(VDF-TrFE-CFE) ternary polymer was proposed. In the device, the ribbon electrocaloric module was driven by a driving wheel and moved sequentially pass through electrodes, hot end, and cold end. In this way, the EC module would undergo four stages of electrocaloric effect. Continuous cooling could be achieved at the cold end. A numerical simulation study of a cooling unit of the structure was carried out, and the effects of the polarization time, length, movement speed, temperature span and applied electric field strength of the electrocaloric module on the cooling performance were investigated. The results showed that the polarization time of the electrocaloric module was essential to obtain a stable cooling power density(CPD). The CPD increased with the increase of the length of the electrocaloric module and its motion speed, decreased with the increase of the temperature span at both ends. It also showed a strong positive correlation with the electric field strength. The optimal COP/COPc values existed for different electric field strengths. The cooling power density of a cooling unit reached 6.61 W/cm at a temperature span of 3 K and an electric field strength of 160 MV/m.

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Last Update: 2023-02-27