权重因子与结构参数对拓扑优化液冷板性能的影响

Abstract A liquid-cooled plate can be used to decrease the Photovoltaic (PV) panel temperature and improve its photoelectric conversion efficiency effectively. A computer simulation with a topology optimization model is performed to examine the thermal and hydraulic performances of the liquid-cooled plates, which is centered on maximizing heat transfer efficiency and minimizing power dissipation. Then a variety of liquid-cooled plate structures have been designed with different outlet configurations. The simulation results agree well with the experiments within a maximum error of 5 %. On the basis of the model, a weight factor is employed to achieve optimal trade-offs between heat transfer efficiency and hydraulic performance in the topology-optimized (TO) liquid-cooled plate. It is found that the overall thermal and hydraulic performance of the TO liquid-cooled plates are optimal at the weight factor of 0.6. The TO liquid-cooled plate exhibits superior thermal and hydraulic performance relative to the straight channel type. The maximum temperature of the heat source is reduced by 23.11 K and the pressure drop is reduced by 58.47 Pa, respectively. Furthermore, at the weight factor of 0.6, a comparative study is conducted on the thermal and hydraulic performance of TO liquid-cooled plates with four outlet configurations. The outlet configuration with fluid entering and exiting from the same side in parallel exhibits the best heat transfer performance. Finally, the influence of structural parameters on the performance is investigated. It is found that the thermal and hydraulic performance of the TO liquid-cooled plate increases significantly with increasing flow channel height.