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目前煤基动力系统主要有三个发展方向:煤气化联合循环系统、燃氢燃气轮机系统和基于煤气化的纯氧燃烧系统.煤基动力系统燃气轮机透平中水蒸气和二氧化碳的含量将会大大增加,透平中的传热会受到导热/对流/辐射耦合作用的影响。为了研究不同非透明气体环境对传热特性的影响,本文采用实验和数值方法进行研究。结果表明,在五种不同燃气组分的工况下,辐射导致的金属板上表面温升约为50～60 K,主流燃气中非透明气体的含量越高,辐射导致的温升越小。
At present, coal-based power system mainly has three development directions: coal gasification combined cycle system, hydrogen burning gas turbine system and pure oxygen combustion system based on coal gasification. The content of water vapor and carbon dioxide in the coal-based power system gas turbine turbine will increase greatly, Heat transfer in the turbine can be affected by thermal coupling / convection / radiation coupling. In order to study the influence of different non-transparent gas environment on the heat transfer characteristics, this paper uses experimental and numerical methods to study. The results show that under the condition of five different gas components, the temperature rise on the surface of the metal plate caused by radiation is about 50-60 K. The higher the content of non-transparent gas in mainstream gas, the smaller the temperature rise caused by radiation.