双效并联溴化锂吸收式制冷系统双热源工作模式的理论研究

Theoretical study of dual-heat mode operation of double-effect parallel-flow LiBr-H_2O absorption refrigeration system

对双效并联溴化锂吸收式制冷系统双热源工作模式的热性能进行了理论研究,分析了低压发生器所消耗的热量及系统运转参数的变化对系统热性能的影响.计算结果显示:在双热源工作模式下,随着低压发生器所消耗热量的变化,为保证系统的正常运行,需要对溶液流量进行调节控制;随着低压发生器所消耗热量的增加,系统的节能效果更好,运行费用更低;溶液分配比的可调节范围随着运转条件的变化而变化.

The thermal performance of a double-effect parallel-flow LiBr-H2O absorption refrigeration system under dual-heat mode of operation was theoretically studied,and the influence of the external heat capacity variation of the low pressure generator and operation parameters on the performance of the system was analyzed.Results show that under dual-heat mode of operation,the flux of solution should be adjusted with the variation of the external heat capacity of the low pressure generator to ensure the normal operation of the system;an increase in external heat capacity of the low pressure generator leads to a better effect of energy-saving and a lower operating cost;the adjustable range of solution distribution ratio changes with the variation of operating conditions.