The comparison of experiment results and CFD simulation in the heat pump system using thermobank and two phase ejector for heating room and cold storage.

In this paper, heat pump system has been developed by CFD simulation and experimental investigation. The two phase ejector is used in system which is increase in coefficient of performance (COP) and decrease in compressor displacement relative to a standard vapor compressor cycle. The thermobank stores the wasted heat of during refrigeration cycles and its energy is used for defrosting process and heating room. It also reduces defrosting time and condensation load so that the temperature regulation in the cold storage is stable. The COP increases about 38.57% with experiment and 42.7% with simulation when the thermobank and ejector are installed in heat pump system. In general, the simulated and experimental results of heat pump system using thermobank and ejector show good agreement. This heat pump system can be used to keep preservation of agricultural products in cold storage warehouse together with floor panel heating for room in winter.

本文通过计算流体动力学（Computational Fluid Dynamics）仿真与实验研究，开发了一款热泵系统。该系统搭载两相喷射器，相较于标准蒸汽压缩循环，可提升系统性能系数（Coefficient of Performance, COP）并降低压缩机排量。蓄热装置（thermobank）可储存制冷循环产生的废热，其储存的热能可用于除霜过程与房间供暖，同时能够缩短除霜时长、降低冷凝负荷，使冷库内的温度调控更为稳定。当热泵系统集成蓄热装置与两相喷射器后，实验测得COP提升约38.57%，仿真结果显示COP提升可达42.7%。总体而言，搭载蓄热装置与两相喷射器的热泵系统，其仿真与实验结果吻合度良好。该热泵系统可用于冷库内农产品的保鲜存储，并可在冬季配合房间地板供暖系统使用。