Experimental Investigation on Heat Transfer and Frictional Characteristics of Shell-and-tube Heat exchangers with Different Baffles and Tubes
In this study, the heat transfer and tube frictional characteristics of the helixchangers (shell-and-tube heat exchanger with helical baffles) with spirally corrugated and smooth tubes and the conventional shell-and-tube heat exchanger with smooth tubes were experimentally obtained. The results show that the helixchangers with the spirally corrugated tube and the smooth tubes enhance the total heat transfer coefficient about 26％ and 7％ on the average than the segmental baffled heat exchanger. In the tube side, the spirally corrugated tube leads to about 28％ average increase on convective heat transfer performance and about 24％ average increase on pressure drop than the smooth tube, but its conversion efficiency is still higher. The helical baffle could enhance the shell-side condensation coefficient by 13％, and the spirally corrugated tube could help the helixchanger with it enhance remarkably the condensation performance by 53％ than the segmental baffled heat exchanger.
Shell-and-tube Heat Exchanger Helical baffle Spirally Corrugated Tube Heat Transfer Pressure Drop
C.Wang J.G.Zhu Z.F.Sang
School of Mechanical & Power Engineering, Nanjing University of Technology, China Nanjing Yangzi Petrochemical Maintenance & Installation Co., Ltd., China
国际会议
西安
英文
429-435
2009-07-11（万方平台首次上网日期，不代表论文的发表时间）