蓄热型太阳能喷射制冷系统供冷性能分析及优化

为提高蓄热型太阳能喷射制冷系统的供冷性能,利用TRNSYS软件,建立蓄热型太阳能喷射制冷系统瞬态仿真模型.结合太原市某公共建筑的逐时冷负荷,分析集热侧循环水流量和蓄热水箱容积对系统供冷特性的影响.结果表明:随集热侧水流量、水箱容积的增大,系统在连续5 d中的平均输出冷量均呈现先增后减的趋势;集热侧水流量和蓄热水箱容积与集热器总面积的最佳比例分别为0.005 kg·(h·m²)^-1和0.02 m³·m^-2.

Analysis and Optimization on Cooling Performance of Solar Ejector Refrigeration System With Heat Storage

In order to improve the cooling performance of solar ejector refrigeration system with heat storage, the transient emulation model of solar ejector refrigeration system with heat storage was established by TRNSYS software. In combination with hourly cooling load of one public building in Taiyuan, the effects of water flow rate at solar collecting side and volume of thermal storage tank on cooling characteristics of the system were analyzed. Results show that along with the increase of water flow rate and water tank volume, the system’s refrigerating capacity on average in five consecutive days tends to increase firstly and then decreases. The best ratios of water flow rate at solar collecting side and total area of the collector, volume of thermal storage and total area of the collector are 0.005 kg·(h·m²)^-1 and 0.02 m³·m^-2, respectively.