新型平板热管式PV/T热泵系统的集热模块优化研究

Study on the optimization of the collector module of the novel flat plate heat pipe PV/T heat pump system

中文关键词: 平板热管  PV/T  热泵  数值模拟  性能优化

英文关键词: flat heat pipe  PV/T  heat pump  numerical simulation  performance optimization

中文摘要:

      本文建立了新型平板热管式PV/T热泵系统的数学模型,通过实验测量得到系统在各工况下运行时的实验数据,并验证了模型的准确性和可靠性。基于验证后的数学模型,对系统的热性能、电性能和热泵系统进行模拟研究。结果表明,在冬季工况下,系统的日平均热功率、电功率和COP分别为274.5W、93.5W和2.7。由于冬季室外环境温度较低,在冬季运行时,集热系统会通过光伏板表面向周围环境散失大量的热,导致系统的集热量不能满足热泵侧的热需求,直观表现为蒸发侧集热水箱水温在全天呈现下降的趋势。因此通过增加集热器对系统的集热模块进行优化,优化后系统的日平均热功率提升至654.2W,COP提升至6.9。

英文摘要:

      In this paper, a mathematical model of a novel flat plate heat pipe PV/T heat pump system was established, and the experimental data of the system under various operating conditions were obtained through experimental measurements, and the accuracy and reliability of the model were verified. Based on the verified mathematical model, the thermal performance, electrical performance and heat pump system of the system were simulated. The results show that in winter conditions, the daily average thermal power, electric power and COP of the system are 274.5W, 93.5W and 2.7, respectively. Due to the low outdoor ambient temperature in winter, the heat collection system will lose a lot of heat to the surrounding environment through the surface of the photovoltaic panel during operation in winter, resulting in that the heat collection of the system cannot meet the heat demand on the heat pump side, which is directly reflected in the decreasing trend of the water temperature of the evaporative side heat collection tank throughout the day. Therefore, the heat collection module of the system is optimized by adding a heat collector. After optimization, the daily average thermal power of the system is increased to 654.2W, and the COP is increased to 6.9.