论文部分内容阅读
一、国内外凝汽器采用螺旋槽铜管强化传热的概况众所周知,凝汽器背压下降0.001MPa,中压电站的电厂热效率将提高1％,高压及超高压电站的热效率提高0.7％左右,巨大的经济效益促进各国研究工作者对高效凝汽器进行研究。螺旋槽铜管在理论上和实践上都是一种有效的传热元件,各国竞相在凝汽器中采用螺旋槽管强化传热并获得很好的效果。苏联于1973年在ⅡT-25/90/10凝汽器上采用了螺旋槽管,实测总体传热系数比光管提
First, the domestic and international use of helical groove copper tube condenser heat transfer Overview As we all know, condenser back pressure drop 0.001MPa, medium voltage power plant thermal efficiency will increase 1%, high pressure and EHV thermal efficiency increased by 0.7% The enormous economic benefits promote the research of high efficiency condenser in all countries. Spiral groove copper pipe is an effective heat transfer element both in theory and in practice. Countries are competing to adopt spiral groove tube to enhance heat transfer in condenser and get good results. The Soviet Union in 1973 in Ⅱ T-25/90/10 condenser spiral groove tube, measured the overall heat transfer coefficient than the light pipe to mention