太阳能喷射制冷系统临界冷凝特性实验研究

为了了解太阳能喷射制冷系统的系统性能随冷凝温度的变化规律,进而提出合理的系统运行控制策略,文中设计并搭建了太阳能喷射制冷实验研究平台,以HFC134a为制冷剂,对太阳能喷射制冷系统的临界冷凝特性进行了实验研究.研究表明:太阳能喷射制冷系统工作时,系统性能系数(COP)、制冷量和能效比(EER)等参数随着冷凝温度的升高呈...

Experimental study on critical condensation characteristics of solar ejector refrigeration system

In order to understand the performance of solar ejector refrigeration system with the change of condensation temperature,and thus proposing a reasonable system operation control strategy,an experimental solar ejector refrigeration system was designed and constructed to research the critical condensation performance with HFC134a as refrigerating medium.The results demonstrate that when the solar ejector refrigeration system is working,the coefficient of performance,cooling capacity and energy efficiency ratio value keep almost constant with the condensation temperature rise,and then reduce dramatically when the condensation temperature achieves the critical point.The critical condensation temperature increases with increasing the generator temperatures when the evaporation temperature remains constant,and the critical condenser temperature increases with increasing evaporation temperature when the generator temperature remains constant.Based on the above results,when the solar ejector refrigeration system is working,the condensation temperature should be kept below the critical condensation temperature by the appropriate control strategy for keeping the system running efficiently.