Abstract To solve the increasingly serious global energy problem, an innovative cascade absorption heat transformer system using industrial low-level waste heat is presented in this paper. Based on an accurate model and simulations, the cascade system is studied in terms of an energy, exergy, and economy analysis. To achieve a trade-off between the thermodynamic and economic performance, a multi-objective optimization method is used to optimize the system. The thermodynamic performance (total exergy destruction) of the multi-objective optimized design is 3.64% higher than its ideal minimum value, while the economic performance (total annual cost) is 2.74% higher than its ideal minimum value. This indicates that the multi-objective optimization scheme can provide better comprehensive performance than single optimization schemes for the cascade absorption heat transformer system. In addition, the results show that the exergy destruction rate is 74.30%. The exergy destruction of the NH3/H2O system accounts for 55.62% of the total input exergy; thus, improvements of this system should be prioritized.

中文翻译：

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一种新型低放余热驱动级联吸收式换热器的能量、火用、经济性分析及多目标优化

摘要 为解决日益严重的全球能源问题，本文提出了一种创新的利用工业低放余热的级联吸收式热变系统。基于精确的模型和模拟，从能量、火用和经济分析方面研究了级联系统。为了实现热力学和经济性能之间的权衡，采用多目标优化方法来优化系统。多目标优化设计的热力学性能（总火用破坏）比理想最小值高3.64%，经济性能（年总成本）比理想最小值高2.74%。这表明多目标优化方案可以为级联吸收式热变系统提供比单一优化方案更好的综合性能。此外，结果表明火用破坏率为74.30%。NH3/H2O系统的火用破坏占总输入火用的55.62%；因此，应优先改进该系统。