CFD Analysis of Membrane Helical Coil for Optimization of High Pressure and Temperature of Syngas in Underground Coal Mines

This research work investigates the flow field and the heat transfer characteristics of a Membrane Helical Coil Heat Exchanger for the cooling of syngas. Finite volume method based on FLUENT software practised and the RNG k–e turbulence model was adopted for modelling flow turbulent. The distribution of the resistance, the distribution of the heat source, and the porosity rate introduced to ANSYS R18.0 by coupling the user-defined function. The variation of local heat transfer,the pressure drop, and the temperature distribution studied under the effects of the syngas components and the operating pressure, and the impact of the arrangement of the membrane on the heat transfer investigated. The results show that higher operating temperature and pressure can improve the heat transfer, however, brings more significant pressure and temperature drop. The components of the syngas significantly affect the heat transfer and the pressure drop. The arrangement of the membrane influences the fluid flow.