Numerical Analysis on Heat Transfer Enhancement of Shell Side Fluid in Spiral Casing Heat Exchanger With Different Inner Tube
CFD software was used to simulate the fluid flow and heat transfer in the shell side of spiral casing heat exchanger with smooth inner tube,threaded inner tube,transverse corrugated inner tubes and longitudinal corrugated inner tube.The simulation results were compared,and the performance of temperature field and velocity field were analyzed to tell the heat transfer characteristics and flow characteristics of the shell side fluid.The results showed that the overall performance of fluid flow and heat transfer in shell side of spiral casing heat exchanger with threaded inner tube was the best within the research scope,and the comprehensive evaluation factors were all above 1.10 with the maximum value of 1.18.The screw thread played a dual role of disturbing and guiding the fluid in the shell side,reducing the thickness of the boundary layer,enhancing the mixing of the fluid in the shell side,and strengthening the heat transfer,which could provide help for engineering applications.
Spiral casing heat exchangerShell side fluidEnhanced heat transferFluid flow
NETL
NSTL
万方数据
维普
