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回收工业生产中的余热是节能技术中的重要课题,对于高品位的余热用废热锅炉来生产蒸汽作为热源加以利用,或通过热力发动机转换成为机械能,这早已被很多生产部门所注意,并已得到相当广泛的应用。然而对于低品位的工业余热则在很长一段时期内由于种种原因却一直被人们所忽视,这种情况直到世界性的能源危机出现以后才有所改变。
Recovery of waste heat in industrial production is an important issue in energy-saving technologies. It has long been noted by many production departments that high-grade waste heat is used as waste heat boiler to produce steam as a heat source or converted into mechanical energy by a heat engine and has been obtained A wide range of applications. However, low-grade industrial waste heat has been neglected by people for a long period of time for a long time. This situation will not change until after the worldwide energy crisis has occurred.