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余热属于二次能源,寄存于气体、液体和固体等三种物态形式之中。其中绝大部分余热都是以物质的物理显热出现的。显然以物理显热为主的余热也只有在其温度高于周围环境温度下才有应用价值。气态余热的利用相对于固态和液态来说,在工程应用上是较易实现的,锅炉排烟的热量回收可以说是典型的余热利用。下面谈一下应用于锅炉房排烟装置中的热管式换热器。利用锅炉排烟余热加热空气,可提高锅炉的热效率,它属于余热的直接利用,可以直接
Waste heat is secondary energy, stored in gas, liquid and solid form of three kinds of objects. Most of the waste heat is based on the material physical sensible heat. Obviously the main sensible heat of the physical heat only in the temperature above the ambient temperature has the application value. The utilization of gaseous waste heat is relatively easy to implement in engineering application relative to solid and liquid state, and the heat recovery of boiler exhaust smoke can be regarded as typical waste heat utilization. Now talk about the heat pipe heat exchanger used in the exhaust of the boiler room. The use of waste heat boiler exhaust heat the air can increase the thermal efficiency of the boiler, it is the direct use of waste heat can be directly