期刊名称：Bulletin of the Institute of Heat Engineering
印刷版ISSN：2083-4187
出版年度：2017
卷号：97
期号：2
页码：127
语种：English
出版社：Warsaw University of Technology
摘要：The focus of the present numerical work is to study the effect of fan air flow direction and mounting arrangement on the thermalperformance of the radiators of power transformers using Computational Fluid Dynamics analysis. The study is carried outfor four radiators of 3 m height and 30 fins with 0.52 m width and two fans of 1 m diameter in vertical and horizontal airflow directions. The horizontal flows from the two fans are considered in the same and the opposite direction, with the fanslocated on the same and the opposite side, respectively running at the same speed of 860 rpm for all configurations. Thermalradiation is modelled using the discrete transfer radiation model. A comparison of different flow and heat transfer patterns aswell as heat dissipation—for the four different configurations—is presented. Velocity and temperature contours are used tovisualize the heat and fluid flow distribution over the radiators. Fans placed on one side of the radiators result in larger heatdissipation than the other arrangements studied. The reasons for the improvement in heat dissipation are presented.
其他摘要：The focus of the present numerical work is to study the effect of fan air flow direction and mounting arrangement on the thermal performance of the radiators of power transformers using Computational Fluid Dynamics analysis. The study is carried out for four radiators of 3 m height and 30 fins with 0.52 m width and two fans of 1 m diameter in vertical and horizontal air flow directions. The horizontal flows from the two fans are considered in the same and the opposite direction, with the fans located on the same and the opposite side, respectively running at the same speed of 860 rpm for all configurations. Thermal radiation is modelled using the discrete transfer radiation model. A comparison of different flow and heat transfer patterns as well as heat dissipation—for the four different configurations—is presented. Velocity and temperature contours are used to visualize the heat and fluid flow distribution over the radiators. Fans placed on one side of the radiators result in larger heat dissipation than the other arrangements studied. The reasons for the improvement in heat dissipation are presented.
