我国凝汽器换热管材料的发展趋势

Trend of Heat Exchange Tube Material used in Condenser in China

凝汽器传热组件中的换热管是凝汽器最重要的部件之一,换热管性能的优劣会直接影响机组的运行。合理选择高性价比的换热管材料,始终是凝汽器设计中的关键点。换热管选材主要考虑其应具备优良的传热性能,同时还应有良好的耐腐蚀性能,具有适宜的强度和刚度,并需考虑经济性和易采购及易加工等性能。近年来,各种管材在凝汽器上的应用有了新的进展,特别是铁素体不锈钢管和奥氏体—铁素体双相不锈钢管的应用,将会成为凝汽器换热管材料应用的发展趋势。

Heat exchange tube is one of the most important parts in condenser, whose performance will directly affect the operation of power unit. It is always the key point in the design work of condenser to select heat exchange tube material with high cost performance. Excellent heat transfer performance is the key point in selection of tube material, Meanwhile, it shall also have fine performance of anti-corrosion, suitable strength and rigidity and economic and processable performance. In recent years, there is new development of all kinds of tube materials in the application of condenser, especially ferritic stainless steel tube and austenite-ferritic hiphase stainless steel tube will be applied as heat exchange tube materials in condenser.