Detailed Computational Fluid Dynamics (CFD) simulation model of a particular designed shell-and-tube supercritical CO2 gas heater in a biomass-CO2 power generation system has been developed based on actual heat exchanger structural data. The model has been validated with both manufacturer data and empirical correlations. It is thus applied to investigate and predict the performance of the heat exchanger and its associated system at various operating conditions. Based on the CFD simulation results, the performance improvement strategies for the heat exchanger designs and system controls are found and recommended.
Keywords shell-and-tube CO2 gas heater, biomass-CO2 power generation system, Computational Fluid Dynamics (CFD) modelling, performance analysis.