The test section was a vertical tube-in-tubeheatexchanger with hot water in the annulus and the test refrigerant in the inner tube.
试验换热管为垂直套管式，外层为加热水路，内层为工质回路，中心布置着电极。
2
In this paper, a few common joint ways of heatexchangertube-to-tube sheet are analyzed and compared on manufacture, apply and repair.
文章对换热器中管子和管板的几种常用联接方式从制造、使用及维修的角度进行了分析、比较。
3
Stainless steel heatexchangertube high efficiency, energy saving effect is also a significant increase in the use of stainless steel heatexchangertube.