Thermoeconomic Optimization of a LiBr/H2O Absorption Chiller Using Structural Method
Thermoeconomic Optimization of a LiBr/H2O Absorption Chiller Using Structural Method
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DOI：
10.1115/1.1830049
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发表时间：
2005-06
影响因子：
3
通讯作者：
R. Misra;P. Sahoo;Akhilesh Gupta
中科院分区：
文献类型：
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作者：
R. Misra;P. Sahoo;Akhilesh Gupta
吸收式制冷机系统的优化策略通常基于热力学分析。然而，如此获得的最优并不总是保证经济最优。在这方面，将热力学原理与经济参数相结合的热经济学对于实现这些系统的成本效益起着至关重要的作用。在本文中，该技术用于优化空调应用的单效LiBr/H 2 O吸收式制冷机系统，旨在实现最低的产品成本。这种优化方法基于组件不可逆性和整个系统不可逆性之间的相对相互依赖性。这种关系称为结构系数，用于评估系统产品的经济成本。结构系数的使用消除了复杂的数值程序，并且优化是通过系统子系统的顺序局部优化来实现的。分析表明，最佳配置的资本成本比基本情况增加了约 33.3%，但额外成本可以通过降低燃料成本得到很好的补偿。这是可能的，因为工厂不可逆性减少了约 47.2%。
The optimization strategy for absorption chiller systems is generally based on thermodynamic analysis. However, the optimum, so obtained, does not always guarantee the economic optimum. In this regard, the thermoecommics that combines the thermodynamic principles with economic parameters plays a vital role for achieving the cost effectiveness of these systems. In this paper, this technique is applied to optimize a single-effect LiBr/H 2 O absorption chiller system for air-conditioning applications aiming at achieving the minimum product cost. This optimization methodology is based on the relative interdependence between component irreversibility and the total system irreversibility. This relationship, known as structural coefficient, is used to evaluate the economic cost of the product of the system. The use of structural coefficient eliminates complex numerical procedures, and the optimization is achieved by sequential local optimization of the subsystems of the system. The analysis reveals that the capital cost of the optimum configuration is increased by about 33.3%, from the base case, however, the additional cost is well compensated by reduced fuel cost. This is possible because of reduction of plant irreversibilities by about 47.2%.