内螺纹水冷壁管的传热及阻力特性研究

HIGHLIGHTS OF HEAT TRANSFER AND PRESSURE DROP CHARACTERISTICS OF RIFLED TUBES APPLIED IN BOILER WATER WALL

针对目前大型电站锅炉水冷壁广泛采用内螺纹管来防止或推迟传热恶化的发生,阐述了内螺纹管的传热机理,并对国内外内螺纹管在亚临界、近临界和超临界压力区的传热性能及阻力性能进行了综述。文中结论对采用内螺纹管的电站锅炉水冷壁的设计具有较高的价值。

In order to effectively avoid or delay heat transfer deterioration, rifled tubes are extensively applied now in largecapacity power plant boiler water water wall. This paper describes the heat transfer mechanism of the rifled tubes and highlights the heat transfer and pressure drop characteristics of the rifled tubes in the regions of subcritical pressure, near critical pressure and supercritical pressure. The conclusions of this paper are of important value to the power plant boiler water wall design.