【作者】 王浩；

【导师】 罗会龙；

【作者基本信息】 昆明理工大学 ， 供热、供燃气、通风及空调工程， 2016， 硕士

【摘要】 太阳能光伏利用是最有利用前景的可再生能源利用技术之一,在能源日渐枯竭、环境恶化的今天,大力发展太阳能光伏技术具有战略意义。太阳能光电制冷冰箱系统因其结构紧凑,使用维护简单,安全性好,无污染等优点,而备受人们的青睐。本文根据现有光伏组件和太阳能光电制冷冰箱系统应用中存在的一些问题,提出了一种基于热管强化换热的光伏组件的太阳能冰箱系统,并对系统的制冷性能进行了研究,得到的结论对提高太阳能直流冰箱系统的制冷性能及光伏组件的光电转换效率有一定的指导意义。本文的研究工作主要包括以下几个方面：1)设计了一套由采用热管强化换热的光伏组件作为太阳能光电转换器的太阳能光伏直流冰箱系统,并进行了匹配和调试。根据已有的设备以及所具备的测试条件,在对太阳能光伏直流冰箱系统各部件的能量转换过程进行分析的基础上,合理搭建了太阳能直流冰箱制冷性能测试实验平台。2)对光伏组件主被动冷却的太阳能直流冰箱系统的主要构件,太阳能光伏组件、蓄电池、控制器、太阳能直流冰箱等进行了匹配选型和详细描述。并在此基础上,对系统的工作原理进行了简要阐述。3)实验测定了太阳能光伏直流冰箱系统在昆明各种典型天气情况下通过改变光伏组件主被动冷却方式后的工作性能,如光伏组件两端电压和电流、蓄电池电压和电流、太阳能总辐射强度、空气流速、冰箱、电池基板、热管表面及冷却流道内空气的温度等参数。实验数据表明,主被动冷却下光伏组件的光电性能均得到改善,且主动冷却的效果更显著。此外,对太阳能直流冰箱在空载和带负载条件下进行了实验研究,分析了有无负载对冰箱的运转率和性能的影响。实验表明：空载条件下,冷藏室的平均温度为1.91℃,冷冻室的平均温度为-9.16℃,冰箱的运行率为40.2%；带负载条件下,冷藏室的平均温度为5.95℃,冷冻室的平均温度为-9.82℃,冰箱的运转率为46.5%。负载下系统的COP最高可达O.10。本文主要关注光伏组件与热管冷却技术相结合对太阳能光伏制冷系统性能改善的影响,对于今后光伏组件性能优化及太阳能光伏制冷的性能改善具有一定的参考意义。更多还原

【Abstract】 Solar photovoltaic (PV) is one of the most prospective technology in renewable energy. With the increasing depletion of energy, and the deterioration of environment, to develop solar photovoltaic technology has strategic significance. Solar photovoltaic refrigerator system is been favored since it is non-contaminative, safe, compact, and easily to use and maintenance.According to the existing problem of solar photovoltaic, putting forward a solution that based on using heat pipe with reinforced heat exchange function in solar refrigerator system. Consequently, the conclusion has a certain extent guiding significance for the improvement of the performance of the solar DC refrigerator system and the photoelectric conversion efficiency of photovoltaic modules. The research work mainly includes the following aspects:1) Designing a set of PV modules which use heat pipe to strengthen heat transfer in DC refrigerator system, and making the performance optimization. Building the solar DC refrigerator prototype in the base of the analysis of the energy conversion of solar DC refrigerator system.2) Description and discussion on the main components which are solar photovoltaic storage battery, controller and refrigerator. Furthermore, giving a brief principle of the solar DC refrigerator system.3) The experiment measured the performance of the refrigerator system under various typical weather conditions in Kunming. Through changing the naturally or mechanically cooling method in solar DC refrigerator system, getting a series of parameters. The experiment variables include parameters such as the voltage and current on both ends of the photovoltaic modules, the battery voltage and current, the total solar radiation intensity, air flow rate, and temperatures of cell substrate, heat pipe surface and air in cooling channel. After analyzed experiment data has get a conclusion is that the effect of mechanically cooling in solar DC refrigerator system is more significant compared with naturally cooling. Tests were carried out in no-load condition and load condition, the average temperature of the refrigerating chamber is 1.91℃ and 5.95℃, freezer temperatures is -9.16℃ and -9.82℃, and the refrigerator operation rate is 40.2% and 46.5% respectively. When the refrigerator system was operated in load condition, the coefficient of performance of solar DC refrigerator system can achieved 0.10.This thesis focuses on the combination of photovoltaic modules with heat pipe cooling technology in improving the performance of solar photovoltaic refrigeration system. The conclusions of this thesis have certain reference significance for the optimization and improvement in photovoltaic module and performance of solar photovoltaic refrigeration.更多还原