Document Type : full paper
Authors
1
Assist. Prof., Department. of Mechanical Engineering, Pardic Branch, Islamic Azad University, Pardic,Iran
2
M.Sc. Student, Department of Mechanical Engineering, Pardic Branch, Islamic Azad University, Pardic,Iran
Abstract
In this work, the modeling and optimization of high - speed trains cooling system with refrigerant air in the brayton refrigeration cycle is investigated, so that the return air from train's cabin with the fresh air is mixed and enters with lower temperature into the train cabin after crossing the compressor, the heat exchanger, and the turbo-expander.
The goal of modeling and optimization is to have a direct effect on the cycle performance of system, with any changes in characteristics of the cycle equipment, which results in identifying the highest and best values for the two target functions, the COP performance factor, and the annual cooling will be at the F annual cost.
The result of modeling and enumeration with a two-objective genetic algorithm (NSGA-II), which was performed using MATLAB software, is that at 35 °C pressure ratio 2.22, the compression efficiency of is 88.72%, heat exchanger efficiency 89% ,Turbo-expander efficiency, 88.88% ,COP of the 1.86 (F).
Keywords
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