质量流速对螺旋管圈与垂直管圈内螺纹管内超临界水传热特性影响
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摘要
本文研究质量流速变化对螺旋管圈与垂直管圈内螺纹管内超临界水传热影响。结果表明:螺旋管圈与垂直管圈内螺纹管内壁温的温差随质量流速的增大而减小。高焓值区外,相比于垂直管圈内螺纹管,质量流速的改变对螺旋管圈内螺纹管传热效果的影响较大。
引文
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[2]陈听宽.超临界与超超临界锅炉技术的发展与研究[J].世界科技研究与发展,2005,27(6):42-48.
[3]陈端雨,等.超临界压力塔式直流锅炉螺旋管圈水冷壁吸热偏差的试验研究[J].动力工程学报,2012,32(8):581-585.
[4]陈听宽,等.内螺纹管近临界压力区两相流沸腾传热特性的研究[J].工程热物理学报,1989,(2):190-192.
[5]Nishikawa K,Fuju T,Yoshida S.Investigation into burnout in grooved evaporator tubes[J].Trans JSME,1972,75(1):700-707.
[6]赵振兴,等.内螺纹管内超临界水传热和阻力特性的数值研究[J].热力发电,2015,(2):24-30.
[7]Zhang Q,Li H X,Zhang W Q,et al.Experimental study on heat transfer to the supercritical water upward flow in a vertical tube with internal helical ribs[J].International Journal of Heat and Mass Transfer,2015,89(1):1044-1053.
[8]Taklifi A,Hanafizadeh P,Behabadi M A A,et al.Experimental investigation on heat transfer and pressure drop of supercritical water flows in an inclined rifled tube[J].The Journal of Supercritical Fluids,2016,107(1):209-218.
[9]张伟强.垂直上升内螺纹管内超临界压力水传热特性分析[R].西安交通大学动力工程多相流国家重点实验室,2016.