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Thermodynamic Modeling and Performance Optimization of a Solar-Assisted Vapor Absorption Refrigeration System (SAVARS)

机译:太阳能辅助蒸汽吸收制冷系统的热力学建模与性能优化(萨瓦尔斯)

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摘要

A thermodynamic steady-state model for a single-effect lithium bromide-water (LiBr-H_2O)-based vapor absorption refrigeration system of 17.5 kW capacities has been presented using the first and second laws of thermodynamics. The mass, energy and exergy balance equations in each component of the vapor absorption cycle have been fitted into a computer program to carry out the calculation using the thermo-physical properties of the working fluid. The performance parameters such as coefficient of performance (COP), exergy coefficient of performance (ECOP), total exergy destruction (TED), etc. have been evaluated considering different temperatures in generator and evaporator, different LiBr concentrations in the weak and strong LiBr-H_2O solution and different solution heat exchanger effectiveness. The model evaluated the optimum performance parameters like COP, ECOP, TED, etc. of the vapor absorption system by using Design Expert-12 software for an application like on-farm cooling or transit storage of fruits and vegetables.
机译:使用第一和第二热力学定律,提出了一种用于17.5kW容量的单效锂溴 - 水(Lib-H_2O)的热力稳态模型,其蒸汽吸收制冷系统为17.5kW容量。蒸汽吸收周期的每个部件中的质量,能量和漏胀平衡方程已经装配到计算机程序中,以使用工作流体的热物理性质进行计算。考虑到发生器和蒸发器中的不同温度,弱和强千熊杆菌中的不同温度,已经评估了性能系数(COP),总能量的性能系数(ECOP),总漏洞破坏(TED)等。 H_2O解决方案和不同溶液热交换器效果。该模型通过使用设计专家-12软件,评估了蒸汽吸收系统的COP,ECOP,TED等等最佳性能参数,以适用于农场冷却或水果和蔬菜的过境储存等应用。

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