Theoretical description of preheating a gas-air mixture in a gas burner with a heat divider

Abstract

Abstract The article is devoted to the study of thermal processes occurring during the operation of a household gas burner. The preparation of gas fuel for combustion is one of the important functions that a gas burner performs. At the same time, when designing gas burner devices, it is important to determine the final temperature of the gas-air mixture inside the burner body, since an increase in the temperature of the resulting mixture makes it possible to intensify the combustion process. We have proposed a solution that allows to intensify the transfer of heat in the body of a gas burner from the lid heated due to contact with the flame to the gas flow using the thermal shape of the conical divider installed in the center on the inner side of the lid. It has been established that the location of the heat divider in the center on the inner side of the cover allows minimizing or completely eliminating the formation of a stagnant zone. The conical shape of the heat divider provides less resistance to the oncoming flow movement, and also because of its own side surface, it allows you to increase the useful area of the heat exchange surface. An expression is obtained for determining the final temperature of the gas-air mixture at the outlet from the firing holes of the burner body.