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本文提出了一种冷热双蓄太阳能喷射—压缩耦合制冷系统,并建立了相应的数学模型。该系统以R141b为制冷工质,太原地区的气象参数作为输入,结合TRNSYS软件进行了建筑模拟和系统的仿真计算,全面分析了连续典型气象日内系统的运行情况及热性能。结果表明,太阳能集热器有用能不为零时,集热器效率随太阳辐射强度同增减;拓宽太阳能喷射制冷系统在最大喷射系数下的运行时间,可以增加系统的制冷量;系统的制冷量在与用户冷负荷需求达到平衡的状态下,系统更加有效的利用了太阳能;在连续典型气象日内,太阳能喷射制冷子系统可为用户提供59.3%的冷量,系统与传统的蓄热型太阳能喷射—压缩联合制冷系统相比可节约132 863 kJ电能,综合性能系数COP0可达0.253。
In this paper, a cold-hot dual-injection solar-compression coupled refrigeration system is proposed, and a corresponding mathematical model is established. The system takes R141b as refrigerant and meteorological parameters of Taiyuan as input, and combines with TRNSYS software to simulate and simulate the building. The system analyzes the operation and thermal performance of continuous typical meteorological day system. The results show that the efficiency of solar collectors increases with the increase of solar radiation intensity when the useful energy of solar collectors is not zero. It can increase the system cooling capacity by widening the operating time of the solar ejector refrigeration system under the maximum injection coefficient. The system uses solar energy more effectively under the condition that the demand of the user is in balance with the user. In the continuous typical meteorological days, the solar injection refrigeration subsystem can provide 59.3% of the cooling capacity for the user. The system is similar to the traditional regenerative solar energy Compared to the injection-compression combined refrigeration system, 132 863 kJ of electricity can be saved, and the COP0 can reach 0.253.