柴油机非水冷却介质管外传热特性研究  

A STUDY ON HEAT TRANSFER PERFORMANCES OF CROSSFLOWING TUBE OF NONWATER COOLANTS FOR DIESEL ENGINES

作　　者：张忠进[1,2] 刘巽俊[1,2] 

机构地区：[1]吉林工业大学热能工程系 [2]吉林工业大学内燃机工程系

出　　处：《农业机械学报》1997年第4期55-58,共4页Transactions of the Chinese Society for Agricultural Machinery

摘　　要：模拟柴油机工作条件，采用圆柱管外横流强迫对流模型，对机油、柴油及不同配比的乙二醇水溶液等液体横向掠过圆管时的传热特性进行了研究，分析了各种因素对传热的影响，对试验数据进行回归分析得出了３种非水冷却介质传热关系式。为机油、柴油及乙二醇水溶液用于柴油机高温冷却及少冷却提供了理论依据。imulating diesel engine work conditions, a heat transfer model of forced convection with a cylinder in crossflow of fluid was set up, and heat transfer performances were researched for an engine oil, a diesel fuel and ethylene glycol aqueous solutions with different composition as coolants. The effects of different factors were analysed for heat transfer, and the correlation expressions of heat transfer for the three kinds of nonwater coolants were obtained by regress analysis using test data. Regress analysis process showed that flow states of the coolants had obvious effect on the heat transfer under test conditions. The study provides a theoretical basis for the diesel engines high temperature cooling and low heatrejection cooling by using engine oils, diesel fuels and ethylene glycol aqueous solutions as coolants.

关 键 词：柴油机 冷却 对流 传热 

分 类 号：TK421.1[动力工程及工程热物理—动力机械及工程]