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With its great ability on controlling air parameters, combined air-conditioning unit is playing an increasingly important role in civilian life, industrial production and even military fields. Because of the variety of varied path, while the environment changed, the optimal varied path can't be got, and the unit can't be in the best operating state, which waste the energy serious. Through the analysis of the structure and principles of the unit, the paper aimed at studying the air condition on the psychrometric chart. And then use genetic algorithm to get the optimal value, finally the optimal varied path in the process of air treatment, which improving the efficiency of the unit greatly, and reducing the energy consumption. Air-conditioning Unit Structure The means that the unit treated air includes supplying air, filtrating, cooling, heating, dehumidifying, humidifying and so on. Different functional sections correspond to different devices, including forced draught fan, primary efficiency filter, electric heater, front surface air coolers, after surface air coolers, disc dehumidifier, and humidifier. The air-conditioning unit structure is shown in Figure 1.

Study on the Strategy of Path Optimization on the Process of Air Handling Based on Genetic Algorithm