基于CFD的有机热载体炉螺旋盘管传热研究
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摘要
针对有机热载体锅炉螺旋盘管超温结焦问题,使用计算流体动力学(CFD)数值仿真方法,研究了有机热载体锅炉盘管特征参数、导热油动力黏度以及流速对对流传热能力的影响。研究结果表明,在影响螺旋盘管对流传热能力的因素中,最明显的是导热油的流速,其次是导热油动力黏度,螺旋盘管内径对传热能力有一定影响,螺旋盘管的螺旋直径和螺距对传热能力的影响基本可以忽略不计。
Aiming at the problem of organic heat carrier boiler coil's over-temperature coking,heat transfer analysis of the organic heat carrier helical coil are carried out to study how the spiral characteristic parameters,thermal oil viscosity and flow rate to affect helical coil's heat transfer capabilities.The results show that:among the factors affecting the convective heat transfer capacity of the spiral coil,the most obvious is the thermal oil's flow rate,followed by thermal oil's viscosity,helical coil tube diameter has a certain influence on the heat transfer capability,the curvature and pitch of the spiral coil diameter has little influence on the heat transfer capability.
Aiming at the problem of organic heat carrier boiler coil's over-temperature coking,heat transfer analysis of the organic heat carrier helical coil are carried out to study how the spiral characteristic parameters,thermal oil viscosity and flow rate to affect helical coil's heat transfer capabilities.The results show that:among the factors affecting the convective heat transfer capacity of the spiral coil,the most obvious is the thermal oil's flow rate,followed by thermal oil's viscosity,helical coil tube diameter has a certain influence on the heat transfer capability,the curvature and pitch of the spiral coil diameter has little influence on the heat transfer capability.
引文
[1]GB 24747—2009,有机热载体安全技术条件[S].(GB 24747—2009,Safety Technology Conditions for Heat Transfer Fluids[S].)
[2]彭小兰,吴超,殷先华,等.有机热载体炉事故与积碳检测技术发展[J].工业锅炉,2013(4):6-10,17.(PENG Xiao-lan,WU Chao,YIN Xian-hua,et al.Organic Heat Transfer Heaters Accident and Carbon Deposition Detection Technology[J].Industrial Boiler,2013(4):6-10,17.)
[3]朱建国,仇性启.螺旋管技术研究[J].工业加热,2004,33(1):13-17.(ZHU Jian-guo,QIU Xing-qi.Technical Researches on Spiral Tube[J].Industrial Heating,2004,33(1):13-17.)
[4]汪琦,王志文.螺旋盘管的传热研究[J].石油化工设备技术,1992,13(3):25-28.(WANG Qi,WANG Zhi-wen.Study on Heat Transfer of Helically Coiled Tubes Tube[J].Petro-chemical Equipment Technology,1992,13(3):25-28.)
[5]李成植,金莹.单管式螺旋管热交换器仿真研究[J].石油化工设备,2013,42(2):14-18.(LI Cheng-zhi,JIN Ying.Study on Single-tube Spiral Heat Exchanger[J].Petro-chemical Equipment,2013,42(2):14-18.)
[6]Patankar S V,Pratap V S,Spalding D B.Prediction of Laminar Flow and Heat Transfer in Helically Coiled Pipes[J].Fluid Mech.,1974,62:539-551.
[7]Manlapaz R,Churchill S W.Fully Developed Laminar Convection from a Helical Coil[J].Chemical Engineering Communications,1981,9:185-200.
[8]Janssen L A,Hoogendoorn C J.Laminar Convective Heat Transfer in Helical Tubes[J].Heat Mass Transfer,1978,21:1197-1206.
[9]王福军.计算流体动力学分析——CFD软件原理与应用[M].北京:清华大学出版社,2004.(WANG Fu-jun.Computational Fluid Dynamics Analysis——The Principles and Applications of CFD Software[M].Beijing:Tsinghua University Press,2004.)
[10]李朝阳,马贵阳,徐柳,等.螺旋管内流场数值模拟[J].辽宁石油化工大学学报,2011,31(3):34-37.(LI Zhao-yang,MA Gui-yang,XU Liu,et al.Numerical Simulation on Internal Flow Field of Spiral Pipe[J].Journal of Liaoning University of Petroleum&Chemical Technology,2011,31(3):34-37.)
[11]Launder B E,Spalding D B.Lectures in Mathematical Models of Turbulence[M].London:Academic Press,1972.
[12]白博峰,郭烈锦,王学兴,等.螺旋管蒸汽发生器的瞬态流动与传热特性[J].西安交通大学学报,2002,36(9):47-50.(BAI Bo-feng,GUO Lie-jin,WANG Xue-xing,et al.Transient Flow and Heat Transfer in Helical Coil Steam Generator[J].Journal of Xi’an Jiaotong University,2002,36(9):47-50.)
[13]Seban O R A,Mclaughlin E F.Heat Transfer in Tube Coils with Laminar and Turbulent Flow[J].International Journal of Heat Mass Transfer,l963(6):387-395.
[14]Ito H.Friction Factors for Turbulent Flow in Curved Pipes[J].Journal of Basic Engineering,1959,81:123-134.
[15]Srinivsan P S,Nandapurkar S S,Holland F A.Pressure Drop and Heat Transfer in Coils[J].Chemistry Engineering,1968,218:113-119.
[16]刘重裕,秦红,董丹.新型螺旋盘管换热器的流动及传热性能研究[J].化工设备与管道,2014,51(3):39-43.(LIU Chong-yu,QIN Hong,DONG Dan.Study on Flow and Heat Transfer Characteristics of New Curling Tube Heat Exchanger[J].Process Equipment&Piping,2014,51(3):39-43.)
[17]张小艳,赵珊媛,洪珊瑚.水在螺旋盘管内的换热及压降特性研究[J].西安科技大学学报,2014(2):56-61.(ZHANG Xiao-yan,ZHAO Shan-yuan,HONG SHAN-hu.Heat Transfer and Pressure Drop Characteristics for Water Flowing in Sprial Coil[J].Jounral of Xi’an University of Science and Technology,2014(2):56-61.)
[18]王强,石玉环,石玉萍.螺旋盘管相变蓄热换热器蓄放热过程数值模拟[J].黑龙江工程学院学报(自然科学版),2012,26(2):31-35,77.(WANG Qiang,SHI Yu-huan,SHI Yu-ping.The Numerical Simulation about Exothermic Process of Spiral Coil Phase Change Thermal Storage Heat Exchanger[J].Journal of Helongjiang Institute of Technology,2012,26(2):31-35,77.)
[2]彭小兰,吴超,殷先华,等.有机热载体炉事故与积碳检测技术发展[J].工业锅炉,2013(4):6-10,17.(PENG Xiao-lan,WU Chao,YIN Xian-hua,et al.Organic Heat Transfer Heaters Accident and Carbon Deposition Detection Technology[J].Industrial Boiler,2013(4):6-10,17.)
[3]朱建国,仇性启.螺旋管技术研究[J].工业加热,2004,33(1):13-17.(ZHU Jian-guo,QIU Xing-qi.Technical Researches on Spiral Tube[J].Industrial Heating,2004,33(1):13-17.)
[4]汪琦,王志文.螺旋盘管的传热研究[J].石油化工设备技术,1992,13(3):25-28.(WANG Qi,WANG Zhi-wen.Study on Heat Transfer of Helically Coiled Tubes Tube[J].Petro-chemical Equipment Technology,1992,13(3):25-28.)
[5]李成植,金莹.单管式螺旋管热交换器仿真研究[J].石油化工设备,2013,42(2):14-18.(LI Cheng-zhi,JIN Ying.Study on Single-tube Spiral Heat Exchanger[J].Petro-chemical Equipment,2013,42(2):14-18.)
[6]Patankar S V,Pratap V S,Spalding D B.Prediction of Laminar Flow and Heat Transfer in Helically Coiled Pipes[J].Fluid Mech.,1974,62:539-551.
[7]Manlapaz R,Churchill S W.Fully Developed Laminar Convection from a Helical Coil[J].Chemical Engineering Communications,1981,9:185-200.
[8]Janssen L A,Hoogendoorn C J.Laminar Convective Heat Transfer in Helical Tubes[J].Heat Mass Transfer,1978,21:1197-1206.
[9]王福军.计算流体动力学分析——CFD软件原理与应用[M].北京:清华大学出版社,2004.(WANG Fu-jun.Computational Fluid Dynamics Analysis——The Principles and Applications of CFD Software[M].Beijing:Tsinghua University Press,2004.)
[10]李朝阳,马贵阳,徐柳,等.螺旋管内流场数值模拟[J].辽宁石油化工大学学报,2011,31(3):34-37.(LI Zhao-yang,MA Gui-yang,XU Liu,et al.Numerical Simulation on Internal Flow Field of Spiral Pipe[J].Journal of Liaoning University of Petroleum&Chemical Technology,2011,31(3):34-37.)
[11]Launder B E,Spalding D B.Lectures in Mathematical Models of Turbulence[M].London:Academic Press,1972.
[12]白博峰,郭烈锦,王学兴,等.螺旋管蒸汽发生器的瞬态流动与传热特性[J].西安交通大学学报,2002,36(9):47-50.(BAI Bo-feng,GUO Lie-jin,WANG Xue-xing,et al.Transient Flow and Heat Transfer in Helical Coil Steam Generator[J].Journal of Xi’an Jiaotong University,2002,36(9):47-50.)
[13]Seban O R A,Mclaughlin E F.Heat Transfer in Tube Coils with Laminar and Turbulent Flow[J].International Journal of Heat Mass Transfer,l963(6):387-395.
[14]Ito H.Friction Factors for Turbulent Flow in Curved Pipes[J].Journal of Basic Engineering,1959,81:123-134.
[15]Srinivsan P S,Nandapurkar S S,Holland F A.Pressure Drop and Heat Transfer in Coils[J].Chemistry Engineering,1968,218:113-119.
[16]刘重裕,秦红,董丹.新型螺旋盘管换热器的流动及传热性能研究[J].化工设备与管道,2014,51(3):39-43.(LIU Chong-yu,QIN Hong,DONG Dan.Study on Flow and Heat Transfer Characteristics of New Curling Tube Heat Exchanger[J].Process Equipment&Piping,2014,51(3):39-43.)
[17]张小艳,赵珊媛,洪珊瑚.水在螺旋盘管内的换热及压降特性研究[J].西安科技大学学报,2014(2):56-61.(ZHANG Xiao-yan,ZHAO Shan-yuan,HONG SHAN-hu.Heat Transfer and Pressure Drop Characteristics for Water Flowing in Sprial Coil[J].Jounral of Xi’an University of Science and Technology,2014(2):56-61.)
[18]王强,石玉环,石玉萍.螺旋盘管相变蓄热换热器蓄放热过程数值模拟[J].黑龙江工程学院学报(自然科学版),2012,26(2):31-35,77.(WANG Qiang,SHI Yu-huan,SHI Yu-ping.The Numerical Simulation about Exothermic Process of Spiral Coil Phase Change Thermal Storage Heat Exchanger[J].Journal of Helongjiang Institute of Technology,2012,26(2):31-35,77.)