新型太阳能喷射与电压缩联合制冷系统研究

A NEW COMBINED EJECTOR-COMPRESSOR REFRIGERATION SYSTEM DRIVEN BY SOLAR ENERGY AND ELECTRICITY

为提高太阳能与辅助能源的综合利用率,提出了一种新型的太阳能喷射式与电压缩式有机结合为一体的联合制冷系统,进而对这种新型联合系统及传统联合系统进行了热力学对比分析,对联合系统太阳能喷射式制冷时最佳发生温度进行了选择,并计算了典型年气象条件下两种联合系统相对于电压缩制冷系统的节能量及节能率。结果表明:两种联合系统相对于电压缩式制冷系统而言都是节能的,但新型联合制冷系统比传统联合制冷系统更节能,更能高效地综合利用太阳能与常规能源。在文中计算条件下,新型联合系统比传统联合系统多节能13.6%。

A solar ejector or absorption refrigeration system is usually driven by conventional energy unefficiently when solar energy is not enough to drive the system. A new combined ejector-compressor refrigeration system driven by solar energy and electricity was presented. A thermodynamic comparison between the new and old combined refrigeration system was made, the optimum generator temperature of solar ejector refrigeration system was assured, and the primary energy consumption and energy-saving ratios of the two combined systems were calculated under typical-year weather conditions. The results showed that the two combined systems are energysaving. But the new combined system can save more energy than the old one. The energy-saving ratio of the new combined refrigeration system is 13. 6% more than that of the old one under the calulation conditions.