基于稳态分布参数模型的光伏蒸发器的数值模拟  

THE NUMERICAL SIMULATION BASED ON A STEADY AND DISTRIBUTED MODEL FOR PV EVAPORATOR IN A PV SOLAR ASSISTED HEAT PUMP

作　　者：何汉峰[1] 季杰[1] 裴刚[1] 刘可亮[1] 孙炜[1] 

机构地区：[1]中国科学技术大学热科学和能源工程系,合肥230026

出　　处：《太阳能学报》2007年第11期1173-1181,共9页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金项目(50478023);安徽省自然科学基金(070414161)

摘　　要：该文采用分布参数法,从制冷工质动力学原理出发,根据平衡均相流理论,建立了光伏太阳能热泵光伏蒸发器的稳态分布参数模型。通过数值模拟对光伏蒸发器在给定的太阳辐照强度、环境温度以及制冷工质不同的进口流速下,工质的平均比焓、空隙率、干度、温度、压力等参数沿制冷管道的分布、蒸发器的温度和光伏电池发电效率的二维分布等进行研究。了解这些参数的分布情况对研究光伏蒸发器的光电、光热性能具有十分重要的意义,可作为蒸发器结构以及系统设计的依据,为系统的优化奠定了一定的理论基础。According to the theory of homogeneous flow and thermodynamics of refrigeration system, this paper presents a steady and distributed model for the PV evaporator in a PV solar assisted heat pump system. The numerical simulation with various inlet velocity and the solar radiation and ambient temperature conditions has been done. The results of the simulation given that the distribution of enthalpy, void fraction, vapor quality, temperature, pressure and velocity of the refrigerant with pipe length. Two-dimensional distribution of the evaporator temperature and PV efficiency were also given. All these parameters are important for studying the performance of photovoltaic and photo-thermal of PV evaporator and optimization of the heat pump system.

关 键 词：太阳能热泵 光伏蒸发器 稳态 数值模拟 分布参数 

分 类 号：TK514[动力工程及工程热物理—热能工程] TK511.2