前言企业余热是指生产中使用各种形式的能量,最终以热的形式排入环境的热量。理论上,高于环境温度的余热都有回收利用的可能。实际上,余热有无回收价值,取决于余热的温位及集中数量的多少,取决于经济效益的大小。八十年代国内外新设计、建设的生产装置,排放高、中位余热基本绝迹,排放100℃左右。热量在100×10~4kcal/h以上低温余热也很少见。 Preface Corporate waste heat refers to the amount of heat that is used in the production of various forms of energy and ultimately discharged into the environment as heat. In theory, above the ambient temperature waste heat have the possibility of recycling. In fact, the value of waste heat recovery, depending on the temperature and the concentration of waste heat depends on the size of economic benefits. Eighties at home and abroad new design and construction of production installations, high emissions, the basic residual heat basically disappeared, emissions around 100 ℃. Heat at 100 × 10 ~ 4kcal / h above low temperature waste heat is also very rare.