MODELLING OF HEAT TRANSFER IN A COOLING AIR JACKET OF SPRAY DRYER

摘要：

　　Numerical modelling of heat transfer in the cooling air jacket of a spray dryer was achieved by using computational fluid dynamic method and k-ε standard model was considered for turbulence simulation.Velocity magnitude and temperature variation in the chamber and cooling air jacket were investigated in this modelling.On the other hand,velocity and temperature variation in different height of chamber were measured by a portable hot wire anemometer and some installed transmitters on dryer wall; respectively in order to verify the numerical modelling results.In accordance with the flow path line in the jacket,air layers had a harmonic motion to each other with minimum axial velocity variation.Therefore,air velocity in the axes had the maximum value.In conjunction between the cylindrical and the conical parts of dryer jacket,there is a bit flow deviation toward the wall.In the dryer axis,temperature had the maximum value and decreased from the core toward the dryer air jacket.

关键词： Spray dryer Computational fluid dynamic Cooling air jacket Velocity magnitude Temperature variation

作者: O.R.Roustapour M.Hosseinalipour

作者单位: Agricultural Engineering Research Institute,Agricultural Research and Natural Resources of Fars Prov Department of Mechanical Engineering,Iran University of Science and Technology Tehran,Iran

会议类型: 国际会议

会议名称: The 18th International Drying Symposium Conference(第十八届国际干燥学术大会(IDS2012))

会议地点: 厦门

会议语种:英文

页码: 1-5

在线出版日期: 2012-01-11（万方平台首次上网日期，不代表论文的发表时间）