Development And Research Of Pulsating Heat Pipe Radiator For Electronic Components Cooling

With the rapid development of industry,energy and environmental issues has become an world important problem.The solar energy has become the focus of sustainable development in the 21 st century.In particular,the development of solar concentrator technology,It Brings new hope to get rid of the high cost of solar energy,low efficiency.An important factor affecting photoelectric conversion efficiency,useful life,security and stability of photovoltaic cells is CPV heat problem.For battery cooling problems of concentrating photovoltaic systems caused by high heat flux,we designed a new type of plate heat pipe radiator and built relevant experiental study.Research work as following:1?The research on the cooling of the concentrating photovoltaic cell is introduced in this paper.The basic structure of the concentrating photovoltaic system is summarized,and the heat transfer process of the heat pipe radiator is analyzed.The heat transfer process of heat pipe radiator is mainly divided into three steps.In order to design a superior heat pipe radiator,we must start from these three processes to reduce the overall thermal resistance of heat pipe radiator.2?A plate heat pipe radiator is designed based on theoretical analysis,including the overall shape design,structure design and the fin channel design.Then the heat pipe radiator material and its working fluid are selected.And the manufacture of heat pipe radiator is completed.3?The design and construction of the experimental platform are completed,the methods and procedures of the experiment are formulated,a series of experiments have been built to test the heat transfer performance of the radiator.Then we choose ordinary aluminum radiator as the experimental reference object,and the contrast experiment is carried out.4?In order to effectively analyze the overall performance of the heat pipe radiator and related factors,a various combinations experiments was made,which using the filling rate of 20%,25%,30%,40%,50%,power of 15 W,30W,45 W,60W,75 W,90W,and inclination of 15°,30°,45°,60°,75°,And exchanged position of the radiator with the heat source for experiment to compare experiment results.(1)The overall performance of the heat pipe radiator design is better than aluminum radiator,Under the conditions of simulated battery temperature does not exceed 100?,the heat pipe radiator under natural convection heat can be applied to 78.57 X concentrator photovoltaic cells,and ordinary aluminum only accommodate 59.28 X.(2)Filling rate has a great influence on the heat pipe radiator,as for the heat transfer efficiency of the heat pipe,25% filling rate is the best state.(3)thermal diffusion of the substrate is about 0.1K/W,but Ordinary aluminum radiator is 0.35K/W,there is no doubt that the heat pipe radiator is more better.(4)Tracking system angle change have little effect on heat pipe radiator,So the heat pipe radiator of this article can be better applied for cooling condenser system.(5)the location of the radiator and the battery replacement experiments were carried out,comparative experiments showed that Located above the heat sink effect is slightly better,but the difference is only 5%.It indicates that the radiator can simultaneously accommodate condenser and reflective concentrator photovoltaic systems.