古新,董其伍,刘敏珊,周雅宁

• 1:郑州大学河南省过程传热与节能重点实验室
• 2:郑州烟草研究院

摘要(Abstract)：

为解决折流板换热器壳程流体阻力过大和折流杆换热器低Re下传热系数较小等管壳式换热器的不足,提出了壳程流体"斜向流"的新概念,研制了新型高效节能管壳式换热器?帘式折流片换热器,其壳程传热系数高于折流杆换热器20%～30%,而壳程压力损失大幅低于折流板换热器。以场协同原理分析了斜向流的强化传热机理,指出在帘式折流片换热器壳程中流体速度场与温度梯度场间的夹角小于折流杆换热器,是其强化传热的重要原因。对帘式折流片换热器中折流栅间距、折流片倾角、折流片宽度等重要几何参数对传热和压降的影响规律进行了数值模拟研究,并据此推导了壳程传热系数和流体阻力降准数关联式,为其工程设计和推广应用提供了参考依据。

关键词(KeyWords)： 管壳式换热器;强化传热;;;流片;斜向流;场协同

Abstract:

Keywords:

基金项目(Foundation): 河南省杰出人才创新基金(0221000600)

作者(Author): 古新,董其伍,刘敏珊,周雅宁

参考文献(References)：

• [1]DONG Qi-wu(董其伍),LIU Min-shan(刘敏珊).CAD System Development Technology of Heat Exchanger(换热设备CAD系统开发技术)[M].Beijing(北京):Chemical Industry Press(化学工业出版社),2004.
• [2]WANG Hai-min(王海民).On the intensified heat transfer of the heat exchanger(换热器的强化传热)[J].Petroleum and Chemical Construction(石油化工建设),2005,27(2):59-60.
• [3]Gaddis E S,Gnielinski V.Pressure drop on the shell side of shell-and-tube heat exchangers with segmental baffles[J].Chemical Engineering and Processing,1997,36(2):149-159.
• [4]WU Jin-xing(吴金星),DONG Qi-wu(董其伍),LIU Min-shan(刘敏珊)et al.Numerical simulation on the turbulent flow and heat transfer in the shell side of the rod baffle heat exchanger(折流杆换热器壳程湍流和传热的数值模拟)[J].J Chem Eng of Chinese Univ(高校化学工程学报),2006,20(2):213-216.
• [5]Zhang J F,Li B,Huang W J.Experimental performance comparison of shell-side heat transfer for shell-and-tube heat exchangers with middle-overlapped helical baffles and segmental baffles[J].Chemical Engineering Science,2009,64(8):1643-1653.
• [6]Lei Y G,He Y L,Gao Y F.Effects of baffle inclination angle on flow and heat transfer of a heat exchanger with helical baffles[J].Chemical Engineering and Processing,2008,47(12):2336-2345.
• [7]GU Xin(古新).Numerical Simulation of Shell-and-Tube Heat Exchanger and Research on Sideling-Flow Heat Exchanger(管壳式换热器数值模拟与斜向流换热器研究)[D].Zhengzhou(郑州):Zhengzhou University(郑州大学),2006.
• [8]Dong Q W,Gu X,Wang K.Shell-and-tube heat exchanger with sideling flow in shell side[P].China Patent:200610128301.8,2007-06-27.
• [9]GUO Zeng-yuan(过增元).Principle of field coordination in heat exchangers and its application(换热器中的场协同原则及其应用)[J].Chinese Journal of Mechanical Engineering(机械工程学报),2003,39(12):1-9.
• [10]Guo Z Y,Tao W Q,Shah R K.The field synergy(coordination)principle and its applications in enhancing single phase convective heat transfer[J].International Journal of Heat and Mass Transfer,2005,48(9):1797-1807.
• [11]Guo J F,Xu M T,Cheng L.The application of field synergy number in shell-and-tube heat exchanger optimization design[J].Applied Energy,2009,86(10):2079-2087.