Conjugate Heat Transfer Characteristics of a Highly Thermal-Loaded Film Cooling System in Hot and Multi-Composition Gas Condition Available to Purchase

To reach the goal of Zero-Emission or Near-Zero-Emission, the future advanced power equipment would be using hydrogen or middle/low heat-value syngas as fuel. Radiation would be more important in turbine heat transfer due to the higher temperature and multi-composition gas. The main goal of current study is analyzing the characteristic of conjugate heat transfer considering radiation heat transfer, multi-composition gas, with and without TBC coated. To study the conjugate heat transfer mechanism including conduction/ convection/ radiation in the film cooling flow field considering the effect of the gas composition, both the experimental and the numerical studies are carried out in the present work. By comparing the experimental and the numerical data, it is concluded that the implemented thermal conduction/ convection/ radiation simulation method is valid for the cases studied. The results show that higher percentage of steam in gas composition leads to the higher temperature (lower normalized temperature) on the plate. With the total percentage of steam in hot gas increasing per 7%, the normalized temperature on the plate decrease about 0.02. The heat insulation effect of TBC is more obvious when the radiation effects are strong. TBC makes the temperature distribution more uniform to some extent.