对蒸汽输送管道进行热绝缘是节能的首要措施之一,但有时说起来容易做起来难。这是因为虽然大部分管道绝热容易,但总有一部分或是由于形状特殊,或是由于施工困难而给热绝缘工作带来问题。美国路易斯安纳州的技术人员意识到要给热交换器和重沸器盖上的法兰盘、蒸汽阀门、人行巷道等进行永久性热绝缘较为困难,而且成本很高,特别是有些另部件要经常加以移动或维修时更是如此。在这种情况下工时费用可能超过节能效益。 Thermal insulation of steam transmission pipes is one of the primary measures for energy saving, but it is sometimes easier said than done. This is because although most of the pipelines are easy to insulate, there is always a problem due to the special shape or due to construction difficulties in the thermal insulation work. Technicians in Louisiana, USA, realized that it was difficult and costly to permanently heat the flanges, steam valves, pedestrian walkways, etc. of heat exchangers and reboiler covers, especially some of the other components. This is especially true if you need to move or repair it often. In this case, the cost of working hours may exceed energy efficiency.