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为了了解气象参数对喷射制冷系统性能的影响,选取HCFC-134a作为制冷剂,基于EES软件建立了太阳能喷射制冷系统动态性能仿真程序,模拟研究了太阳辐射值对系统性能的影响。研究表明:一定运行工况下,随着太阳辐射量的增加,系统COP呈现先升高后下降的趋势;发生热量和发生温度均呈现递增趋势;制冷量则呈现先增加,当太阳辐射到达一定值时,系统的制冷量则基本不变的趋势。系统在相同蒸发温度和冷凝温度下运行时,存在一个最佳发生热量工作区,在该最佳发生热量区,系统COP最大,出冷量也最多。
In order to understand the influence of meteorological parameters on the performance of injection refrigeration system, HCFC-134a was chosen as refrigerant. Based on EES software, a simulation program of dynamic performance of solar injection refrigeration system was established. The influence of solar radiation on system performance was simulated. The results show that under certain operating conditions, with the increase of solar radiation, the COP of the system first increases and then decreases; the occurrence of heat and the occurrence of temperature show an increasing trend; the cooling capacity first increases, and when the solar radiation reaches a certain level Value, the system’s cooling capacity is basically the same trend. When the system is operating at the same evaporation temperature and condensation temperature, there is an optimal working area for heat generation. In the optimal heat generation area, the system has the maximum COP and the maximum cooling capacity.