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| Orthogonal experiment of refraction nozzle in vent wash exhaust hood |
| He Hongqin1,Yuan Shouqi1,Zhang Jie1,Liu Xiaofan1,Gu Weihua2 |
| (1.Technical and Research Center of Fluid Machinery Engineering,Jiangsu University,Zhenjiang,Jiangsu 212013,China;2.Shanghai Xian Dai Architectural Design(Group)Co.,Ltd.,Shanghai 200041,China) |
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Abstract The performance of nozzle has decisive influence on the oil cleaning of vent wash exhaust hood.In order to analyze the performance parameters of refraction nozzles,an orthogonal experiment was carried out.The relations with structural parameters,working conditions and hydraulic performance of refraction nozzle on vent wash exhaust hood were studied.An orthogonal array with five factors and four levels was selected in the experiment.The targets of range,spray area,water particle size were evaluated by using synthetical point system,and their relationships were found.The order of factors which affected spray performance were obtained through the orthogonal experiments: The sequence is working pressure,diameter of base circle,height of refractive face and angle of refractive face.The best working condition was that: the pressure of the vent wash exhaust hood was 0.3 MPa,the hole diameter and height of refractive face are both 1 mm,and the refraction angle for the nozzle was 120°,which gives the best spray uniformity,atomization and spray area.
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Received: 09 May 2009
Published: 30 May 2009
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