光伏光热联合双源热泵系统运行模式研究(1):最佳切换模式验证
Research on operation mode of photovoltaic/thermal combined dual-source heat pump systems (1): Validation of optimal switching mode
摘要：
讨论了光伏光热联合双源热泵系统制热运行的最佳切换模式。利用TRNSYS软件建立了仿真模型,对双源(水源、空气源)热泵系统性能系数(COPs)进行了计算,提出以某时刻空气源热泵模式或水源热泵模式运行COPs较大者优先运行作为COPs切换模式。通过前期实验结果验证了模拟结果的正确性,并与常规的集热水箱温度切换模式进行了对比实验,验证了COPs切换模式的有效性。结果表明,该实验系统以COPs最佳切换模式运行时发电量和发电效率较集热水箱温度切换模式分别提高了5.35%和1.73%,耗电量降低了17.03%,COPs提高了4.91%。
Abstract：
This paper discusses the optimal switching mode for heating operation of photovoltaic/thermal combined dual-source heat pump (PV/T-DSHP) systems. A simulation model is established using TRNSYS software, and the coefficient of performance (COPs) of the dual-source (water source and air source) heat pump system is calculated. The COPs-based switching mode is proposed, in which the operation of the air-source heat pump mode or water-source heat pump mode is determined by higher COPsat a certain time. The correctness of the simulation results is verified by the preliminary experimental results, and a comparison experiment is carried out with the conventional switching mode based on the water temperature of the heat collection tank, and the effectiveness of the COPs-based switching mode is verified. The results show that compared with the switching mode based on the water temperature of the heat collection tank, the power generation and power generation efficiency of the system under the COPs-based optimal switching mode are increased by 5.35% and 1.73%, respectively, the power consumption is reduced by 17.03%, and the COPsis increased by 4.91%.
Keywords:photovoltaic/thermal; dual-source heat pump; air-source heat pump; water-source heat pump; operation mode; switching mode; coefficient of performance of system (COPs)