机载换热器工作包线计算及试验研究
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摘要
机载环控用气液板翅式换热器,热边为循环冷却液,冷边为冲压空气,其换热量与飞行高度、飞行马赫数息息相关。为了确定换热器满足换热量要求的工作条件,提出一种额定换热器工作包线计算方法,对换热器进行参数计算和优化,最终得到符合技术要求的工作包线和换热器结构。选取工作包线上典型工作点,设计真空舱试验,模拟飞行高度和速度,对换热器换热性能进行测试。试验结果显示各工作点换热器换热量与额定换热量相差3.2%,表明工作包线计算方法可行、准确,可为同类换热器优化设计和工作包线计算提供参考。
The air-liquid plate-fin heat exchanger for aircraft environmental control is provided with circulating cooling liquid on the hot side and stamping air on the cold side. Its heat transfer is closely related to the flight height and Mach number. In order to determine the working conditions of the heat exchanger to satisfy the heat transfer requirements,a method for calculating the rated heat transfer work envelope is proposed,then the parameters of the heat exchanger are calculated and optimized,and finally the work envelope and the structure of the heat exchanger are obtained. The vacuum chamber test is designed by selecting the typical working point on the working envelope,the heat exchanger performance is tested by simulating flight height and speed. The experimental results show that the heat transfer of the heat exchanger at each working point is3.2% different from the rated heat exchange amount,and the results show that the calculation method of work envelope is feasible and accurate,which can provide reference for the optimal design of similar heat exchangers and the calculation of work envelope.
The air-liquid plate-fin heat exchanger for aircraft environmental control is provided with circulating cooling liquid on the hot side and stamping air on the cold side. Its heat transfer is closely related to the flight height and Mach number. In order to determine the working conditions of the heat exchanger to satisfy the heat transfer requirements,a method for calculating the rated heat transfer work envelope is proposed,then the parameters of the heat exchanger are calculated and optimized,and finally the work envelope and the structure of the heat exchanger are obtained. The vacuum chamber test is designed by selecting the typical working point on the working envelope,the heat exchanger performance is tested by simulating flight height and speed. The experimental results show that the heat transfer of the heat exchanger at each working point is3.2% different from the rated heat exchange amount,and the results show that the calculation method of work envelope is feasible and accurate,which can provide reference for the optimal design of similar heat exchangers and the calculation of work envelope.
引文
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[11]赵安家,孟哲理,高洪权,等.飞行包线对飞行安全影响研究[J].飞机设计,2017,37(1):11-16.ZHAO Anjia,MENG Zheli,GAO Hongquan,et al.The research on the flight envelope of aircraft effecton on safety of fligh[J].Aircraft Design,2017,37(1):11-16.
[12]寿荣中,何慧姗.飞行器环境控制[M].北京:北京航空航天大学出版社,2004:228-229.SHOU Rongzhong,HE Huishan.Aircraft environment control[M].Beijing:Beihang University Press,2004:228-229.
[13]FAKHERI A.Heat exchanger efficiency[J].Journal of Heat Transfer,2007,129(9):1268-1276.
[14]钱文颂.换热器设计手册[M].北京:化学工业出版社,2002.QIAN Wensong.Heat exchanger design handbook[M].Beijing:Chermical Industry Press,2002.
[15]党晓民,庞丽萍,林贵平.基于地面实验的蒙皮换热器高空换热性能分析[J].北京航空航天大学学报,2013,39(4):474-477.DANG Xiaomin,PANG Liping,LIN Guiping.Highaltitude heat transfer performance analysis for skin heat exchanger based on ground experiment[J].Journal of Beijing University of Aeronautics and Astronautics,2013,39(4):474-477.
[16]刘鑫鑫.某型吊舱环控系统组件的研制及性能研究[D].南京:南京航空航天大学,2012.LIU Xinxin.Development and performance research on the environmental control system components for a certain type of pod[D].Nanjing:Nanjing University of Aeronautics and Astronautics,2012.
[2]BIELSKI S,MALINOWSKI L.An analytical method for determining transient temperature field in a parallel-flow three-fluid heat exchanger[J].International Communications in Heat and Mass Transfer,2005,32(8):1034-1044.
[3]李俊.机载多股流板翅式换热器性能研究[D].南京:南京航空航天大学,2015.LI Jun.Study on performance of air borne muti-stream plate-fin heat exchanger[D].Nanjing:Nanjing University of Aeronautics and Astronautics,2015.
[4]PAVEL B I,MOHAMAD A,BDULMAJEED A.An experimental and numerical study on heat transfer enhancement for gas heat exchangers with a pair of block shape vortex generators[J].International Journal of Heat and Mass Transfer,2004,47:4939-4952.
[5]朱岩泉,袁相勇.机载换热器设计[J].电子机械工程,2015,31(4):24-27.ZHU Yanquan,YUAN Xiangyong.Design of airborne heat exchanger[J].Electro-Mechanical Engineering,2015,31(4):24-27.
[6]MISHRA M,DAS P K,SARANGI S.Second law based optimization of cross flow plate-fin heat exchanger design using genetic algorithm[J].Applied Thermal Engineering,2009,29(14):2983-2989.
[7]李俊,蒋彦龙,王瑜,等.机载三股流板翅式冷凝器数值计算与实验研究[J].南京航空航天大学学报,2017,49(3):382-388.LI Jun,JIANG Yanlong,WANG Yu,et al.Numerical calculation and experimental investigation on airborne three-stream plate-fin condenser[J].Journal of Nanjing University of Aeronautics&Astronautics,2017,49(3):382-388.
[8]SELBAS R,KIZILKAN?,REPPICH M.A new design approach for shell-and-tube heat exchangers using genetic algorithms from economic point of view[J].Chemical Engineering and Processing:Process Intensification,2006,45(4):268-275.
[9]PENG H,LING X.Optimal design approach for the plate-fin heat exchangers using neural networks cooperated with genetic algorithms[J].Applied Thermal Engineering,2008,28(5):642-650.
[10]汪艳萍,路智敏,刘晓霞,等.板翅式换热器优化设计[J].内蒙古工业大学学报,2004,23(4):261-264.WANG Yanping,LU Zhimin,LIU Xiaoxia,et al.Optimization design of the plate-fin heat exchanger[J].Journal of Inner Mongolia University of Technology,2004,23(4):261-264.
[11]赵安家,孟哲理,高洪权,等.飞行包线对飞行安全影响研究[J].飞机设计,2017,37(1):11-16.ZHAO Anjia,MENG Zheli,GAO Hongquan,et al.The research on the flight envelope of aircraft effecton on safety of fligh[J].Aircraft Design,2017,37(1):11-16.
[12]寿荣中,何慧姗.飞行器环境控制[M].北京:北京航空航天大学出版社,2004:228-229.SHOU Rongzhong,HE Huishan.Aircraft environment control[M].Beijing:Beihang University Press,2004:228-229.
[13]FAKHERI A.Heat exchanger efficiency[J].Journal of Heat Transfer,2007,129(9):1268-1276.
[14]钱文颂.换热器设计手册[M].北京:化学工业出版社,2002.QIAN Wensong.Heat exchanger design handbook[M].Beijing:Chermical Industry Press,2002.
[15]党晓民,庞丽萍,林贵平.基于地面实验的蒙皮换热器高空换热性能分析[J].北京航空航天大学学报,2013,39(4):474-477.DANG Xiaomin,PANG Liping,LIN Guiping.Highaltitude heat transfer performance analysis for skin heat exchanger based on ground experiment[J].Journal of Beijing University of Aeronautics and Astronautics,2013,39(4):474-477.
[16]刘鑫鑫.某型吊舱环控系统组件的研制及性能研究[D].南京:南京航空航天大学,2012.LIU Xinxin.Development and performance research on the environmental control system components for a certain type of pod[D].Nanjing:Nanjing University of Aeronautics and Astronautics,2012.