分布式光伏能源驱动冰蓄冷空调系统特性分析

Performance Analysis of Ice Refrigeration Air Conditioning System Driven by Distributed Photovoltaic Energy System

构建了0.2kW分布式光伏能源驱动冰蓄冷空调系统,并对其能量转化传递特性开展研究.研究结果表明,光伏阵列光电转换效率的最大值为17.58%,制冷机组COP最大值为0.51,整个系统能量利用率的最大值为8.34%,白天8h的制冰量为16.98kg,晚上可供10m2办公室供冷4h.对系统部件能量传递分析表明,片冰滑落式的制冰过程能量浪费较大.因此,将盘式蒸发器优化为盘管式蒸发器浸入式静态制冰,制冰机COP达到0.71,提高了近40%.

A 0.2 kW ice refrigeration air conditioning system driven by distributed photovoltaic energy sys- tem was proposed and the energy conversion transmission characteristics have been investigated in this pa- per. The results showed that the maximum value of the system energy utilization rate was 8.34%. The maximum value of the photoelectric conversion efficiency of photovoltaic array was 17.58% and the COP of refrigerator was 0.51. The ice produce was 16.98 kg during 8 hougs in daytime, and which could service 10 m^2 office for 4 hours in night. The analysis results about energy transmission among every parts showed that there are much energy waste in the ice making process due to the ice slide type ice making model. Therefore, the disc evaporator was optimized to the coil evaporator which was immersed in the wa- ter tank called static ice making model. The COP of optimized refrigerator was 0. 71, which was improved nearly by 40%.