往复间歇式柔性薄膜电卡器件的实验与仿真分析  

Experimental and Simulation Research on Reciprocating Flexible Film Electrocaloric Device

作　　者：张楹婧 施骏业 钱小石 ZHANG Yingjing;SHI Junye;QIAN Xiaoshi(Interdisciplinary Research Center for Engineering Science,School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Institute of Refrigeration and Cryogenic Engineering,School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Institute of Mechatronics Design and Knowledge‐based Engineering,School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学机械与动力工程学院前瞻交叉研究中心,上海200240 [2]上海交通大学机械与动力工程学院制冷与低温工程研究所,上海200240 [3]上海交通大学机械与动力工程学院机电设计与知识工程研究所,上海200240

出　　处：《制冷技术》2024年第2期1-10,共10页Chinese Journal of Refrigeration Technology

基　　金：国家重点研发计划(No.2020YFA0711500);国家自然科学基金(No.52076127);上海市基础研究领域项目(No.20ZR1471700,No.22JC1401800);上海市科委原创探索项目(No.20Z111050009);机械系统与振动国家重点实验室自主课题(No.MSVZD202211,No.MSVZD202301)。

摘　　要：基于铁电聚合物的电卡制冷技术在可穿戴、便携式、分布式热管理等场景中具备潜在应用优势。本文构建了一种高效紧凑的往复间歇式柔性薄膜电卡器件,采用铁电聚合物P(VDF-Tr FE-CFE)作为电卡材料,实现了1.6 K的温度跨度。为进一步改善器件性能,开发了一维瞬态热设计仿真平台,并基于实验结果对仿真模型的可靠性进行了验证。通过仿真计算,讨论了各设计参数对于器件温跨、制冷功率密度及性能系数的影响规律。结果表明:通过优化运行工况及材料属性,电卡器件能够在3 K的温度跨度下最高达到3 039 mW/cm2的制冷功率密度。Based on ferroelectric polymers,electrocaloric cooling technology has potential application advantages in scenarios such as wearables,portable devices,and distributed thermal management.In this study,a highly efficient and compact reciprocating flexible film electrocaloric device is constructed,using ferroelectric polymers P(VDF‐TrFE‐CFE)as the electrocaloric material,achieving a temperature span(Tspan)of 1.6 K.To further improve the device's cooling performance,a one-dimensional simulation platform is developed,and the reliability of the simulation model is validated based on experimental results.Through simulation calculations,the influence of various design parameters on the Tspan,cooling power density,and performance coefficient of the device is discussed.The results indicate that,by optimizing operating strategies and material properties,the electrocaloric device can achieve a maximum cooling power density of 3039 mW/cm2 under a Tspan of 3 K.

关 键 词：热管理 电卡效应 弛豫铁电体 热阻 

分 类 号：TB611[一般工业技术—制冷工程] TK123[动力工程及工程热物理—工程热物理]