考虑实际传热状况的有轨客车热工计算方法改进
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摘要
针对现行空调客车的热工计算方法通用性不强的问题,在考虑空调客车实际传热状况的前提下,对原有的有轨客车热工计算方法进行改进.对于热工计算中整车等效传热系数(K值)问题,提出不同车体部位应当按照不同的传热模型(二维或三维传热模型)计算K值,并采用有限元分析软件ANSYS计算不同部位的等效K值,通过各个部位的面积加权平均值整合计算,得到整车的等效K值.此方法可用于在较短时间内完成较高精度的有轨客车热工计算,对客车空调负荷计算具有工程指导意义.
It is considered that the actual heat transfer condition of air-conditioned passenger vehicle is not universal.So the thermal calculation method of the existing rail passenger vehicle is improved on condition that the actual thermal calculation method of air-conditioned passenger vehicle is bettered.For the equivalent heat transfer coefficient(K value)problem of the whole vehicle in thermal calculation,the K value of different parts of the whole vehicle will be calculated according to different heat transfer models(2 Dor 3 D model).And the finite element analysis software ANSYS is used to calculate the equivalent Kvalue of different parts of the whole vehicle.Through the average calculation of the various parts of the area,the equivalent Kvalue of the vehicle is got.This method can be used to complete the thermal engineering calculation of the rail passenger vehicle with high accuracy in a short time,and it has the engineering guidance significance for air conditioning load calculation of the vehicle.
It is considered that the actual heat transfer condition of air-conditioned passenger vehicle is not universal.So the thermal calculation method of the existing rail passenger vehicle is improved on condition that the actual thermal calculation method of air-conditioned passenger vehicle is bettered.For the equivalent heat transfer coefficient(K value)problem of the whole vehicle in thermal calculation,the K value of different parts of the whole vehicle will be calculated according to different heat transfer models(2 Dor 3 D model).And the finite element analysis software ANSYS is used to calculate the equivalent Kvalue of different parts of the whole vehicle.Through the average calculation of the various parts of the area,the equivalent Kvalue of the vehicle is got.This method can be used to complete the thermal engineering calculation of the rail passenger vehicle with high accuracy in a short time,and it has the engineering guidance significance for air conditioning load calculation of the vehicle.
引文
[1]罗继华,杨美传,庞会文.基于ANSYS的客车车体传热系数的研究[J].铁道车辆,2010,48(9):4-7.
[2]陈焕新,刘蔚巍.铁路空调客车负荷的确定[J].中国铁道科学,2002,23(5):60-64.
[3]陈焕新,蔡敏,欧阳召文.空调列车运行能耗调查与分析[J].节能技术,2003,21(1):18-20.
[4]李莉,敬俊娥,姜云海,等.基于冷桥分析的列车车体K值优化计算[J].青岛理工大学学报,2010,31(2):63-68.
[5]中华人民共和国铁道部四方车辆研究所.TB/T 1957—91,铁路空调客车热工计算方法[S].北京:中国铁道出版社,1992.
[6]别玉华.高寒动车组车体传热性能的优化研究[D].青岛:青岛理工大学,2014.
[7]熊华生.动车组隔热仿真及整车传热系数K值计算研究[D].青岛:青岛理工大学,2012.
[8]陆耀庆.实用供热空调设计手册[K].2版.北京:中国建筑工业出版社,2008.
[9]中华人民共和国铁道部四方车辆研究所.TB 1951—87,客车空调设计参数[S].北京:中国铁道出版社,1988.
[2]陈焕新,刘蔚巍.铁路空调客车负荷的确定[J].中国铁道科学,2002,23(5):60-64.
[3]陈焕新,蔡敏,欧阳召文.空调列车运行能耗调查与分析[J].节能技术,2003,21(1):18-20.
[4]李莉,敬俊娥,姜云海,等.基于冷桥分析的列车车体K值优化计算[J].青岛理工大学学报,2010,31(2):63-68.
[5]中华人民共和国铁道部四方车辆研究所.TB/T 1957—91,铁路空调客车热工计算方法[S].北京:中国铁道出版社,1992.
[6]别玉华.高寒动车组车体传热性能的优化研究[D].青岛:青岛理工大学,2014.
[7]熊华生.动车组隔热仿真及整车传热系数K值计算研究[D].青岛:青岛理工大学,2012.
[8]陆耀庆.实用供热空调设计手册[K].2版.北京:中国建筑工业出版社,2008.
[9]中华人民共和国铁道部四方车辆研究所.TB 1951—87,客车空调设计参数[S].北京:中国铁道出版社,1988.