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Desigin and Research on Folded Plate Indirect Evaporative Cooler in Textile Air Conditioning

Author: ZuoDanYang
Tutor: ZhouYiDe
School: Zhongyuan Institute of Technology
Course: Heating,Gas Supply, Ventilation and Air Conditioning Engineering
Keywords: Indirect evaporative cooling Textile Air Conditioning The efficiency of heat transfer Orthogonal experiment Single factor experiment.
CLC: TU831.4
Type: Master's thesis
Year: 2011
Downloads: 22
Quote: 0
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Abstract

Large textile factory installed power , water power consumption from 15% to 25% of the total energy consumption of the mills air conditioning energy consumption of the total plant , textile mills air conditioning energy saving lot of sense to reduce the cost of production . In this paper, the status quo of the current textile mills of the high energy consumption of air conditioning as well as indirect evaporative cooling technology application status , based on widely absorbing domestic and foreign advanced technology , the development of the textile folded plate indirect evaporative cooler . By orthogonal experiment to study the impact a major factor in the folded plate indirect evaporative cooler , then through the single factor experiment to identify the main factors impact on the efficiency of heat transfer law . Fold plate indirect evaporative cooling structure size is determined by the design calculations and checking calculation ; Next by theoretical analysis and calculation for selection of experimental equipment required to build a folded plate indirect evaporative cooler performance test bed experiments study the impact of various factors on the efficiency of heat transfer , folded plate indirect evaporative cooler heat exchanger efficiency impact more significant factor in the use of primary air side of the wind speed range analysis method, folded plate indirect evaporative cooler heat exchanger efficiency determined by orthogonal experiments have a greater impact on a relatively small interval of water distribution and secondary wind speed ; Finally, the single factor experiment to determine how the impact of significant factors that affect the efficiency of heat transfer : thermal efficiency wind speed , and inversely proportional to the spray interval with two times the wind speed, an air inlet dry bulb temperature with the secondary air inlet is proportional to the temperature difference between the wet bulb temperature ; channel resistance and Winds proportional . A wind velocity, the optimal value of the secondary wind velocity was 2.5m / s , the cloth water should be continuous cloth water in the nozzle arrangement under certain circumstances , the size of the water quantity to wet the heat exchanger plate surface prevail . Experimental results show that : the primary air velocity of 2.5m / s , can handle 1620m ~ 3 / h primary air , in an air inlet temperature 32 ° C , a secondary air inlet to the wet-bulb temperature of 28.5 ° C , the heat transfer efficiency of up to 32% ; in an air inlet temperature of 38 ° C , the secondary air inlet wet bulb temperature 28.5 ℃ , the heat transfer efficiency of up to 40% . Its direct application to savings in the textile mills air conditioning or combined with mechanical refrigeration cooling capacity , reducing the air conditioning running costs , has a broad application prospects .

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