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提出一种带喷射器的两级吸收式制冷循环,部分低压发生器出口的制冷剂蒸气被高压发生器出口的制冷剂蒸气直接引射到冷凝压力。相比传统的两级吸收式制冷循环,由于部分制冷剂无需被高压溶液循环吸收和发生,因此新循环拥有更高的性能系数。以水-溴化锂作为工质的模拟结果显示,在部分工况下,新循环相对传统两级吸收式制冷循环的COP可提高20%以上。
A two-stage absorption refrigeration cycle with an ejector is proposed, in which part of the refrigerant vapor at the outlet of the low-pressure generator is directly led to the condensing pressure by the refrigerant vapor at the outlet of the high-pressure generator. Compared to the traditional two-stage absorption refrigeration cycle, the new cycle has a higher coefficient of performance because some of the refrigerant does not need to be absorbed and occurs by the high-pressure solution cycle. Simulation results using water-lithium bromide as working fluid show that the COP of the new cycle can be increased by 20% or more compared with the traditional two-stage absorption refrigeration cycle under some operating conditions.