Abstract Utilization of waste or low grade energy can significantly contribute to the world’s energy demand and reduction of carbon dioxide emissions by employing absorption refrigeration systems. One of the major concerns linked with absorption refrigeration is its low efficiency and high capital cost. In present work, the objective was to develop an economic model for absorption refrigeration system adopting a previously validated thermodynamic model and optimize both the parallel and series configurations. The Thermodynamic and economic model was implemented in MATLAB®. The decision variables including temperatures of all the units of both configurations of absorption refrigeration system, outlet temperatures of cooling water, outlet temperature of chilled water, distribution ratio for parallel configuration and effectiveness of solution heat exchangers were optimized by cost minimization using Genetic Algorithm. All the required constraints, especially the crystallization enthalpy limit, were also included in the optimization problem to discard solutions which were not physically valid. The total annual cost was reduced by 33.48% and 26.26% for series and parallel configuration, respectively. Both solution heat exchangers were eliminated from the flow sheet of both configurations. Thermodynamic and economic performance at optimal operating conditions was found almost same for both configurations.

中文翻译：

---

双效吸收式制冷系统并联和串联配置的经济优化

摘要 通过采用吸收式制冷系统，废物或低品位能源的利用可以显着促进世界能源需求和减少二氧化碳排放。与吸收式制冷相关的主要问题之一是其低效率和高资本成本。在目前的工作中，目标是为吸收式制冷系统开发一种经济模型，采用先前经过验证的热力学模型并优化并联和串联配置。热力学和经济模型在 MATLAB® 中实现。决策变量包括吸收式制冷系统两种配置的所有机组温度、冷却水出口温度、冷冻水出口温度、并行配置的分配比和溶液热交换器的有效性通过使用遗传算法的成本最小化进行了优化。所有必需的约束，尤其是结晶焓极限，也包含在优化问题中，以丢弃在物理上无效的解决方案。串联和并联配置的年总成本分别降低了33.48%和26.26%。两种溶液热交换器都从两种配置的流程图中删除。发现两种配置在最佳操作条件下的热力学和经济性能几乎相同。也包括在优化问题中以丢弃物理上无效的解决方案。串联和并联配置的年总成本分别降低了33.48%和26.26%。两种溶液热交换器都从两种配置的流程图中删除。发现两种配置在最佳操作条件下的热力学和经济性能几乎相同。也包括在优化问题中以丢弃物理上无效的解决方案。串联和并联配置的年总成本分别降低了33.48%和26.26%。两种溶液热交换器都从两种配置的流程图中删除。发现两种配置在最佳操作条件下的热力学和经济性能几乎相同。