Study on Enhanced Heat Transfer Characteristics of the Silicon Carbide Heat Exchanger with Multi-blade Twisted Tapes
For purpose of investigating both flow and heat transfer characteristics of the silicon carbide heat transfer pipe and enhancing comprehensive heat transfer capacity,making use of numerical simulation method to analyze the heat transfer pipe with four different twisted tapes was implemented,and the four-blade twisted tape model was taken as the object of research to compare thermal performance of the heat transfer pipe which boasting of different inlet wind speeds and four self-defined pitches and two widths.The results show that,the width of the twisted tape has significant strengthening effect on the heat transfer capacity than the pitch.When the pitch of the four-blade twisted tape stays at 360 mm and the width is 45 mm,the comprehensive heat transfer capacity of the heat exchange tube becomes strongest(1.59).At this time,Nusselt number of the heat transfer tube is 244.37%higher than that of the tube.
heat exchangersilicon carbide heat transfer pipemulti-blade twisted tapeenhanced heat transfernumerical simulationcomprehensive heat transfer performance
NETL
NSTL
万方数据
