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I摘要热管是高效的传热元件,它是一种能快速将热能从一点传至另一点的装置，由热管元件组成的，利用热管原理实现热交换的换热器称之为热管换热器。由于其结构简单、可操控性强、换热效率高、动力消耗小等优点，热管换热器越来越受到人们的重视，是一种应用前景非常好的换热设备。目前，它被广泛应用于动力、化工、冶金、电力、计算机等领域。本文就热管换热器的发展现状、趋势、应用及设计做了一个简要的论述，着重探讨了热管换热器的设计。在讨论热管换热器的设计过程中，主要针对其热力计算、设备结构计算、元件参数的选择做了一个合理构建，并结合实际情况设计出了空气预热热管式换热器基本模型。关键词：热管；热管换热器；结构参数；设计计算IIAbstractAbstractAbstractAbstractHeatpipeisahighlyefficientheattransfercomponents,itisafastheattospreadfromonepointtoanotherpointofthedevice,consistingoftheheatpipecomponents,theuseoftheprincipleofheatpipeheatexchangerforthermalexchangecalledtheheatpipeheatexchanger.Becauseofitssimplestructure,strongcontrol,heatexchanger,highefficiency,powerconsumption,etc,andheatpipeheatexchangermoreandmoreattention,isaverygoodprospectheattransferequipment.Atpresent,itiswidelyusedinpower,chemical,metallurgy,electricpower,computersandotherfields.Inthispaper,thedevelopmentofheatpipeheatexchangerstatus,trends,applicationsanddesignhadabriefdiscussion,focusedonthedesignofheatpipeheatexchanger.Heatpipeheatexchangerinthediscussionofthedesignprocess,mainlyforthethermalcalculation,equipment,structuralcalculations,componentselectionofparametersmadeareasonableconstructionanddesigncombinedwiththeactualsituationoftheairheatpipeheatexchangerpreheatingthebasicmodel.KeyKeyKeyKeywords:words:words:words:Heatpipe;Heatpipeheatexchanger;Structuralparameters;DesigncalculationIII目录1绪论....................................................................................................................................11.1热管及热管换热器的概述...................................................................................11.2热管及其应用.........................................................................................................11.2.1热管的工作原理...........................................................................................21.2.2热管的基本特性..........................................................................................41.2.3热管的发展历程及应用领域.......................................................................51.2.4热管换热器...................................................................................................81.2.5换热器应用前景及研究进展....................................................................141.3热管气-气换热器设计中应注意的问题.............................................................162热管气-气换热器的计算理论及方法............................................................................182.1热管的材料及工作温度........................................................................................182.2热管的强度与最大传热功率...............................................................................192.3热管气-气换热器的设计计算方法......................................................................202.4总换热系数的求解理论及方法...........................................................................232.5热管气-气换热器的离散计算法理论.................................................................322.6热管气-气换热器的定壁温计算法理论.............................................................373确定设计方案..................................................................................................................393.1选择换热器类型...................................................................................................393.2热管的设计...........................................................................................................393.3热管换热器的设计计算方法...............................................................................404热管换热器设计准备......................................................................................................414.1换热管的排列形式...............................................................................................414.2设计步骤...............................................................................................................424.3确定原始数据.......................................................................................................424.4符号说明...............................................................................................................434.5标注说明...............................................................................................................455热管换热器工艺计算......................................................................................................465.1计算总传热量Q...................................................................................................46IV5.2求空气侧出口温度2t′′..........................................................................................465.3确定迎风面宽度B及热管列数n........................................................................485.4求透过系数ζ.......................................................................................................485.5求换热系数h........................................................................................................505.6求翅化比β和翅化效率η....................................................................................505.7求单根热管的热阻R和对数平均温度mT∆，确定单根热管的热通量q.........515.8求热管的排数m...................................................................................................525.9求总热管数N......