Effect of Baffle Structure on Comprehensive Heat Transfer Performance of Shell-and-tube Heat Exchanger for High Viscosity Fluid
Aiming at the problem of low comprehensive heat transfer of shell-and-tube heat exchanger with segmental baffles for high viscosity fluid,taking the high viscosity glycerol as the shell-side model medium fluid,the shell side heat transfer performance of shell-and-tube heat exchanger with segmental baffles and trisection helical baffles were studied by three-dimensional numerical simulation.The results showed that the glycerol high viscosity fluid in the shell-side of heat exchanger with trisection helical baffles exhibited a spiral flow state,which could decrease the heat transfer coefficient and effectively reduce the pressure drop in the shell-side compared with shell-and-tube heat exchanger with segmental baffle,as a result,thermal enhancement TEF factor of the comprehensive performance of heat exchanger with trisection helical baffles could be improved by 4.84%～28.95%.
Trisection helical baffleSegmental baffleNumerical simulationComprehensive heat transfer
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