Abstract An absorption-ejection refrigeration cycle used R290-mineral oil mixture is investigated depending on both conventional and advanced exergy analysis. In this cycle, an ejector and an air-cooled type absorber are utilized to improve the exergetic efficiency of the system. The effects of generator temperature, condensing temperature, evaporating temperature, absorber outlet temperature, absorber efficiency, and pressure ratio on system exergetic efficiency have been discussed and compared with a single-effect absorption cycle in this study. Furthermore, the exergy destruction of each component has been calculated and analyzed. Besides, the exergy destruction of the major components are further researched through the advanced exergy analysis. Analytical results show that the absorption-ejection refrigeration cycle has a higher exergetic efficiency and a more extensive working condition range than the single effect absorption cycle and its exergetic efficiency can reach 0.3554. It is proved the R290/mineral oil as absorption refrigeration has great research value. In addition, the vast majority of exergy destruction appears in the generator and absorber, totally above 60%. The optimization of the generator has the highest priority due to its maximum endogenous avoidable exergy destruction. The absorber is in second place and its exergy destruction can be effectively reduced by optimizing other components.

中文翻译：

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以R290-矿物油为工作副的风冷式吸收-喷射制冷循环的常规和先进火用分析

摘要 基于常规和先进的火用分析，研究了使用R290-矿物油混合物的吸收-喷射制冷循环。在这个循环中，利用一个喷射器和一个风冷式吸收器来提高系统的火用效率。本研究讨论了发生器温度、冷凝温度、蒸发温度、吸收器出口温度、吸收器效率和压力比对系统火用效率的影响，并与单效吸收循环进行了比较。此外，计算和分析了每个组件的火用破坏。此外，通过先进的火用分析，进一步研究了主要部件的火用破坏。分析结果表明，吸收-喷射制冷循环比单效吸收循环具有更高的发热量和更广泛的工况范围，其发热量可达0.3554。证明R290/矿物油作为吸收式制冷具有很大的研究价值。此外，火用破坏的绝大部分出现在发生器和吸收器中，达到60%以上。由于其最大的内源性可避免的火用破坏，发电机的优化具有最高优先级。吸收器位居第二，通过优化其他部件可以有效降低其火用破坏。证明R290/矿物油作为吸收式制冷具有很大的研究价值。此外，火用破坏的绝大部分出现在发生器和吸收器中，达到60%以上。由于其最大的内源性可避免的火用破坏，发电机的优化具有最高优先级。吸收器位居第二，通过优化其他部件可以有效降低其火用破坏。证明R290/矿物油作为吸收式制冷具有很大的研究价值。此外，火用破坏的绝大部分出现在发生器和吸收器中，达到60%以上。由于其最大的内源性可避免的火用破坏，发电机的优化具有最高优先级。吸收器位居第二，通过优化其他部件可以有效降低其火用破坏。