High Influence of the Modified Ejector on Performance of a Solar Absorption Refrigration System (NH3/H2O)

الملخص

Solar absorption cooling system powered by the sun is a very attractive topic for researchers of the solar thermal energy domain. In this paper, the novel design of an ejector was added to the basic cycle of a solar (ammoniawater) absorption cooling system. However, the potential kinetic energy of an ejector was affected to enhance refrigeration efficiency. Nevertheless, thermodynamic analysis was used to investigate the performance of working fluid pair (NH3/H2O). Moreover, the mathematical model is introduced to evaluate system performance, exergy loss of each component and whole system configurations. Thus, the results show that, the proposed cycle enhances cycle peak under all operating conditions. Therefore, the improvement in the modified cycle has enhanced the COP by 50–71 % under condenser temperature range, and by 26–43% under evaporator temperature range, in comparison with the basic cycle