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Mathematical model of convection diathermanous coefficient of refrigerator car

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It is analyzed that the influence factors on temperature field of refrigerator car. The mathematical model of convection diathermanous coefficient has been put forward. It is considered in the model that the parameters of wind speed, ear speed, temperature of car surface, temperature of surroundings, etc. If the boundary conditions and parameters used in calculation model of convection transmits heat coefficient are confirmed as following: the cold plank car velocity V is 120 km/h, and air temperature is 25℃, and the atmosphere press is 1013250 Pa, and wind velocity V f is 10 m/s, and the length of car bodywork L is 5 m, and body work surface temperature is 25℃. The results were obtained by the model: when the wind velocity direction is the same as car velocity, the coefficient K of convection transmits heat is 51.4 ( W·m-2·K-1) , and when the wind velocity direction is against the car velocity. K is 90.58 ( W·m-2·K-1) .

mathematical modelconvection diathermanous coefficientrefrigerator car

WANG Zhong-tang、ZHANG Shi-hong、MEI Rui-bin

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College of Materials Science & Engineering,Shenyang Ligong University,Shenyang 110168,China

Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110015,China

2007

哈尔滨工业大学学报(英文版)
哈尔滨工业大学

哈尔滨工业大学学报(英文版)

影响因子:0.238
ISSN:1005-9113
年,卷(期):2007.14(5)
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