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Exergy based parametric analysis of a combined reheat regenerative thermal power plant and water-LiBr vapor absorption refrigeration system

机译：结合了再热再生热电厂和水-溴化锂吸收蒸汽制冷系统的基于能值的参数分析

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摘要

In this paper, exergy analysis of a combined reheat regenerative steam turbine (ST) based power cycle and water-LiBr vapor absorption refrigeration system (VARS) is presented. Exergetic efficiency of the power cycle and VARS, energy utilization factor (EUF) of the combined system (CS) and irreversibility in each system component are calculated. The effect of fuel flow rate, boiler pressure, cooling capacity and VARS components' temperature on performance, component and total system irreversibility is analyzed. The second law based results indicate optimum performance at 150 bar boiler pressure and VARS generator, condenser, evaporator and absorber temperature of 80 ℃, 37.5 ℃, 15 ℃ and 35 ℃ respectively. The present exergy based results conform well to the first law based results obtained in a previous analysis done on the same combined system. Irreversibility distribution among various power cycle components shows the highest irreversibility in the cooling tower. Irreversibility of the exhaust flue gas leaving the boiler and the boiler are the next major contributors. Among the VARS components, exergy destruction in the generator is the highest followed by irreversibility contribution of the absorber, condenser and the evaporator.
机译：本文介绍了基于组合式再热再生蒸汽轮机（ST）的功率循环和水-溴化锂吸收式制冷系统（VARS）的火用分析。计算出电源循环和VARS的有效效率，组合系统（CS）的能量利用率（EUF）以及每个系统组件的不可逆性。分析了燃料流量，锅炉压力，冷却能力和VARS组件温度对性能，组件和整个系统不可逆性的影响。基于第二定律的结果表明在150 bar锅炉压力和VARS发生器，冷凝器，蒸发器和吸收器温度分别为80℃，37.5℃，15℃和35℃时的最佳性能。当前基于火用的结果非常符合在相同组合系统上进行的先前分析中获得的基于第一定律的结果。不同功率循环组件之间的不可逆性分布显示了冷却塔中的最高不可逆性。接下来的主要贡献者是离开锅炉的废气的不可逆性和锅炉。在VARS组件中，发生器中的火用破坏最大，其次是吸收器，冷凝器和蒸发器的不可逆性贡献。

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