Papers by Author: Zhi Jia Xue

Abstract: Diffusion filtration combustion attains widely attention as its small volume, compact structure, large power range and less emissions which is very important for saving energy in recent years. It is the combustion that fuel and oxidant are separated before burning in porous media. The researches about diffusion filtration combustion are summarized the theory, experiment and numerical simulation in this paper. There is still much knowledge unknown which should be worked on.

Abstract: Two-dimensional numerical investigations on the performance and structure improvement of a inert porous media burner with reciprocating flow are presented. An improved burner design is proposed and this leads to a wider high temperature profile and moderate pressure loss for extremely dilute CH4/air mixture with an equivalence ratio of 0.1.

Abstract: This paper experimentally study on CH₄ / air co-flow diffusion combustion on the upper surface of porous media packed beds. The flame height and flame shape were reconstructed from the upper and the side of the combustor. The influence of the height of the packed bed on the flame height and flame shape is reported. It is shown that the flame height decreases rapidly and the circular diameter increases rapidly with increase the height of the packed beds.

Abstract: Abstract. temperature and species distributions of an atmosphere coflow laminar CH₄/air diffusion flame was studied by numerical simulation. We solve the steady equations for the species mass fraction, energy, momentum with detailed gas-phase reaction mechanism and complex thermal and transport properties to predict the velocity, temperature, species distributions for different dilute level. Results indicated that the predicted temperature and species are in excellent with available experiment date at different dilute level. In addition, it is indicated that adding N₂ in the fuel has a significant influence on the flame temperature and species distribution.

Abstract: Abstract: Based on the idea of residual heat recovery by porous media, the article illustrates the process how the heat transmitted to the targeted porous media via intermediate after the residual heat from flue gas storing in the porous media. The primary air is preheated via the porous media. The article analyzed the energy saving characteristics of the gas cooker from the perspective of experiment and the numerical calculation.