Performance testing method and device of porous media burner

Abstract

The invention discloses a performance detection method of a porous media burner, which includes: establishing a mathematical model of the premixed combustion process in the porous media burner; wherein, the diffusion approximation method and the double flux method are used to establish the premixed combustion process The mathematical model of the radiation heat transfer process; obtaining the structural parameters of the porous media burner to be detected; simulating the premixed combustion process in the porous media burner to be detected; comparing the simulation results with the preset performance indicators, The combustion performance of the porous media burner to be tested is tested. In addition, a performance detection device of a porous media burner is also disclosed. The invention obtains various combustion performance indexes of the porous medium burner in the premixed combustion process, and then compares them with preset performance indexes to achieve the purpose of detection and verification. Combining the diffusion approximation method and the double-flux method to simulate the radiation heat transfer process makes the detection results more accurate and reliable.

Description

technical field [0001] The invention relates to the technical field of porous media burners, in particular to a performance detection method of a porous media burner and a performance detection device of a porous media burner. Background technique [0002] The premixed combustion in the porous media burner is a complex heat transfer process including chemical reaction and three heat transfer modes of heat conduction, convection and heat radiation. Therefore, when testing and verifying the performance of porous media burners, the testing of premixed combustion performance is a very important aspect. At present, when testing the premixed combustion performance of porous media burners, it is proposed to use independent energy equations for gas and solid, but the radiation effect is not considered, and the radiation heat transfer has great influence on flame position, flame position and flame in porous media premixed combustion. Important parameters such as temperature and burn...

AI Technical Summary

Problems solved by technology

At present, when testing the premixed combustion performance of porous media burners, it is proposed to use independent energy equations for gas and solid, but the radiation effect is not considered, and the radiation heat transfer has great influence on flame position, flame Important parameters such as temperature and burning speed have a great influence

For the treatment of radiation heat transfer, the radiation model suitable for optically thick media is not satisfied at the outlet of the porous media burner, and some other radiation models are too complicated when dealing with the internal calculation area of ​​the porous media burner

Therefore, it is not only important but also quite difficult to test the premixed combustion performance of porous media burners

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