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Second law analysis of double effect vapour absorption cooler system

机译：双效蒸气吸收冷却器系统的第二定律分析

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In this paper, exergy analysis of double effect lithium bromide/water absorption refrigeration system is presented. The system consists of a second effect generator between the generator and condenser of the single effect absorption refrigeration system, including two solution heat exchangers between the absorber and the two generators. In order to simulate the refrigeration system by using a computer, a new set of computationally efficient formulations of thermodynamic properties of lithium bromide/water solution developed is used. The exergy analysis is carried out for each component of the system. All exergy losses that exist in double effect lithium bromide/water absorption system are calculated. In addition to the coefficient of performance and the exergetic efficiency of the system, the number of exergy of each component of the system is also estimated. This study suggests the component of the absorption refrigeration system that should be developed. The results show that the performance of the system increases with increasing low pressure generator (LPG) temperature, but decreases with increasing high pressure generator (HPG) temperature. The highest exergy loss occurs in the absorber and in the HPG, which therefore makes the absorber and HPG the most important components of the double effect refrigeration system.
机译：本文介绍了双效溴化锂/吸水制冷系统的火用分析。该系统由位于单效吸收式制冷系统的发生器和冷凝器之间的第二效发生器组成，包括在吸收器和两个发生器之间的两个溶液热交换器。为了通过计算机模拟制冷系统，使用了一组新的计算有效的溴化锂/水溶液热力学性质的公式。对系统的每个组件都进行了火用分析。计算了双效溴化锂/水吸收系统中存在的所有火用损失。除了系统的性能系数和系统效率外，还估计了系统每个组件的系统火用数量。这项研究建议应开发吸收式制冷系统的组件。结果表明，系统的性能随低压发生器（LPG）温度的升高而增加，但随高压发生器（HPG）温度的升高而降低。最大的火用损耗发生在吸收器和HPG中，因此使吸收器和HPG成为双效制冷系统中最重要的组成部分。

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