Experimental And Numerical Simulation On Heat Transfer And Gas Flow Characteristics Of Ceramic Honeycomb Regenerator

High temperature air combustion technology is a new energy-saving and environmental protection technology.It has many advantages,for example,it can recover a large amount of waste heat from flue gas;high fuel efficiency and low consumption;high average furnace temperature,good uniformity;low NOx and CO₂emissions;burning low-calorie fuel and so on.Among them,the regenerator plays an important role in the high-temperature air combustion technology.In this paper,the heat transfer performance of the regenerator is mainly studied experimentally and numerically.This paper briefly introduces the principle of high temperature air combustion technology,development status and application situation and related conditions.With the help of regenerator heat storage furnace test platform,to carry out the experimental study on regenerative combustion system,discussed the effect of suction force on regenerator pressure at different positions of fan and air,regenerator the pressure at different position and the distribution of gas flow rate,changing the switching time,the changes of preheated air and flue gas temperature.But because of the complexity,impossible to test every condition.So this paper uses the Fluent software,based on the experiment results,through the establishment of regenerator flow The physical model and the mathematical model of heat transfer and the fluid from the initial velocity,influence of regenerator material parameters and switching time etc.on the heat transfer performance are simulated.By using numerical simulation method of regenerator was simulated to the steady working process from the initial state,and analysis the changes of flue gas in the starting process and the air outlet temperature,heating time and steady period at the end of the cooling end moment of regenerator temperature distribution,gas velocity and pressure,and the heat transfer performance of different structure parameters and operating parameters were compared and analyzed.Through the analysis of the experimental data and simulation data comparison,the numerical simulation results can be used to support experimental results and supplement the experimental results,and finally get the ideal structural parameters and operation parameters.In this paper,the heat transfer performance of regenerator is discussed through the combination of experiment and numerical simulation,which has some guidance to the development and practical application of regenerator.