摘要
内凸筋管空拉研究表明:由于其周向尺寸减缩不均,径向尺寸均有不同幅度增大,凸筋断面由梯形逐渐变成近似矩形。结果使其传热面积增大系数与内外表面积比值增加较大,有利于提高内凸筋管的热交换效率。
The drawing of inside- ribbed tubes shows that the cross- section of the rib changes gradually from a trapezoid to an approximate rectangle. This is because its peripheral length shrinks nonuniformly while, its axial length extends to varying extents. Therefore the coefficient of the heat-transfer area becomes greater and the ratio between the inner surface and the outer surface increasingly higher, both of which are favourable to heat-transfer when the tube is in use.
出处
《南方冶金学院学报》
1992年第3期185-190,共6页
Journal of Southern Institute of Metallurgy
关键词
内凸筋管
管子空拉
筋形变化
inside-ribbed tube,tube drawing,rib-shape change