Thermal and economical optimization of air conditioning units with vapor compression refrigeration system
Thermal and economical optimization of air conditioning units with vapor compression refrigeration system
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DOI：
10.1016/j.applthermaleng.2003.12.017
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发表时间：
2004-09
影响因子：
6.4
通讯作者：
S. Sanaye;H. Malekmohammadi
中科院分区：
文献类型：
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作者：
S. Sanaye;H. Malekmohammadi
提出了一种蒸汽压缩制冷空调机组热力经济性优化设计的新方法。这种系统包括压缩机、冷凝器、蒸发器、离心风机和轴流风机。蒸发器和冷凝器的温度、它们的受热面积(前表面积和管数)、离心风机和轴流风机功率以及压缩机功率都在设计变量之列。制造商提供的风扇(体积流量对压降)和压缩机功率(使用蒸发器和冷凝器温度)的数据被用来直接从现有数据中为消费者选择这些部件。为了研究系统在各种情况下的性能，并实施优化过程，开发了包含所有热参数和几何参数的仿真程序。优化的目标函数是系统的单位冷负荷总成本，包括部件的资本投资和所需的电力成本。采用拉格朗日乘子法对目标函数进行极小化，以求取系统设计参数。研究了改变冷负荷对最优设计参数的影响。
A new method of thermal and economical optimum design of air conditioning units with vapor compression refrigeration system, is presented. Such a system includes compressor, condenser, evaporator, centrifugal and axial fans. Evaporator and condenser temperatures, their heating surface areas (frontal surface area and number of tubes), centrifugal and axial fan powers, and compressor power are among the design variables. The data provided by manufacturers for fan (volume flow rate versus pressure drop) and compressor power (using evaporator and condenser temperatures) were used to choose these components directly from available data for consumers. To study the performance of the system under various situations, and implementing the optimization procedure, a simulation program including all thermal and geometrical parameters was developed. The objective function for optimization was the total cost per unit cooling load of the system including capital investment for components as well as the required electricity cost. To find the system design parameters, this objective function was minimized by Lagrange multipliers method. The effects of changing the cooling load on optimal design parameters were studied.