中型直膨式太阳能PVT热泵系统性能实验研究  

Experimental Research on the Performance of a Middle-scale Direct-expansion Solar-assisted PVT Heat Pump System

作　　者：姜山[1] 姚剑 刘文杰 贾腾 郑思航 赵耀 代彦军[1] JIANG Shan;YAO Jian;LIU Wenjie;JIA Teng;ZHENG Sihang;ZHAO Yao;DAI Yanjun(Engineering Research Center of Solar Energy and Refrigeration,MOE,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,太阳能发电与制冷教育部工程研究中心,上海200240

出　　处：《工程热物理学报》2023年第11期2934-2940,共7页Journal of Engineering Thermophysics

基　　金：上海市2022年度“科技创新行动计划”科技支撑碳达峰碳中和专项(No.22dz1206200)。

摘　　要：对一种中型直膨式太阳能PVT(光伏/光热)热泵热电联产系统进行了实验研究。通过对PV(光伏)组件与直膨式集热/蒸发器的合理耦合构建PVT热泵系统,直膨式背板可吸收太阳能电池废热,降低太阳能电池温度,有效提高光伏组件发电效率,同时提高了热泵循环蒸发温度和蒸发压力,改善了热泵系统的运行性能。背板采用新型直膨式集热/蒸发器流道结构,结合PVT组件阵列管路设计,有效提升了冷媒分布均一性和PVT组件工作温度的均匀性。实验结果表明系统在热水模式下的平均COP(Coefficient of Performance)可达6.45,供暖模式的平均COP达4.24。系统所发电量可用于自身压缩机、水泵运行或并入电网,且提供55℃以上的热水,从而实现太阳能PVT热泵系统高效热电联产。A direct expansion solar-assisted PVT heat pump cogeneration system was experimentally investigated.The PVT heat pump system was constructed by coupling the PV module with the direct expansion heat collector/evaporator.The direct expansion heat collector/evaporator could absorb the waste heat of the solar panel,thus reducing the cell temperature and effectively improving the power generation efficiency of the module.This reasonable combination could also increase the evaporation temperature and pressure of the heat pump circulation,which also improves the systematical operation performance.Combining the novel channel structure of the direct-expansion heat collector/evaporator with pipeline design of the array could effectively improve the refrigerant distribution and temperature uniformity.The experimental results indicated that average COP of the proposed system can reach 6.45 in the hot water mode and 4.24 in the heating supply mode.In addition,power generation can be used for self-sufficient operation or integrated into power grid,simultaneously producing the hot water above 55℃,realizing the efficient cogeneration.

关 键 词：PVT 直膨式 热泵 热电联产 实验研究 

分 类 号：TK519[动力工程及工程热物理—热能工程] TM615[电气工程—电力系统及自动化] TU83[建筑科学—供热、供燃气、通风及空调工程]