摘要
对中冷器传热系数 K值进行误差分析表明 ,K值误差是换热量测量误差的 3倍以上。由于新型中冷器风阻较大 ,为此推导了台架试验与柴油机工况下耗散功之差别 ,由此差别使传热系数 K值的测量误差在 2 0 %左右 ,应给予重视。
Error analysis of intercooler′s heat transmission coefficient K indicates that the error of the value of K is more than 3 times as big as the error of measured value of the heat exchange capacity.As the intercooler of latest model has a high air resistance,the difference between dissipation under bench test and working condition is deduced.This difference results in a noteworthy error rate of 20% of the measured value of heat transmission coefficient K.In addition,an improved pressurized intercooler bench test mehtod is presented under existing test method condition of railway standards.
出处
《中国铁道科学》
EI
CAS
CSCD
北大核心
2000年第2期63-66,共4页
China Railway Science
关键词
中冷器
风阻
传热系数
柴油机
Intercooler, Dissipation, Heat trransmission coefficient, Test method
