In this work, a multi-pressure double ejector boosted absorption refrigeration system (DEBARS) is designed and analyzed; two vapor and liquid ejectors are implemented simultaneously before the condenser and absorber components and both of the solution and refrigerant heat exchangers are included in the cycle. Vapor and liquid ejectors are simulated and analyzed in details and the shock circle method is used for the vapor ejector simulation. The characteristics inside the vapor ejector involving the chocking phenomenon and the irreversible shock process are also considered comprehensively. The proposed system is compared with the basic and three-pressure level absorption refrigeration cycles. The results show that the multi-pressure level cycle has the superior performance to both of the previous cycles; The maximum Coefficient of performance (COP) and second law efficiency (${\eta }_{\mathit{II}}$) in the new cycle is improved up to 108.35/33.11 and 31.61/46.62 percent in comparison with the basic and three-pressure level cycles, respectively. The generator activation temperature of the DEBARS is in the range of basic cycle and 36–55 °C lower than the three-pressure level cycle; Also, the evaporator start-up temperature in the DEBARS is considerably lower than both of the basic and three-pressure level cycles.

在这项工作中，设计并分析了多压力双喷射器增压吸收式制冷系统（DEBARS）；在冷凝器和吸收器组件以及溶液和制冷剂热交换器都包括在循环中之前，同时实施两个蒸气和液体喷射器。对蒸气和液体喷射器进行了详细的模拟和分析，并使用冲击圆法进行了蒸气喷射器的仿真。还综合考虑了蒸汽喷射器内部涉及阻塞现象和不可逆冲击过程的特性。将拟议的系统与基本和三压力级吸收式制冷循环进行了比较。结果表明，多压力液位循环的性能优于之前的两个循环。最大性能系数（COP）和第二定律效率（${\eta }_{\mathit{II}}$相较于基本和三级压力循环，新循环中的）分别提高了108.35 / 33.11和31.61 / 46.62％。DEBARS的发生器激活温度在基本循环范围内，比三压力水平循环低36–55°C；另外，DEBARS中的蒸发器启动温度明显低于基本和三压力水平循环。