热力学第二定律分析与第一定律分析相结合，优先考虑过程或系统中能量的质量。详细的热力学分析为改进热力系统及其部件指明了方向。因此，该分析可作为评估和改进吸收系统的有用工具。根据热力学第一定律和第二定律，对以溴化锂/水溶液为工质的吸收式制冷机的各种结构进行了分析和比较。这些吸收系统包括单吸收系统- 效应、双效和三效循环。首先对这些系统进行了模拟，以研究第一定律性能，同时还计算了工质的热性质、熵和火用，以分析不同操作条件下的第二定律效率。单位:SICitation:研讨会，ASHRAE交易，第105卷，第页。1.

Thermodynamic second-law analysis combined with first-law analysis gives a premium to consideration of the quality of energy over the quantity involved in a process or a system. A detailed thermodynamic analysis leads the way to improve thermal systems and their components. Thus, this analysis can be applied as a useful tool for evaluation and improvement of absorption systems. Various configurations of absorption chillers using a LiBr/H2O solution as the working fluid were analyzed and compared on the basis of the first and second laws of thermodynamics. These absorption systems include single-effect, double-effect, and triple-effect cycles. Simulation of these systems was employed first to investigate the first-law performances, while the thermal properties, entropy, and exergy of the working fluids were also calculated to analyze the second-law efficiencies under different operating conditions.Units: SI