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介绍近些年来,国内外出现的一种新颖的强化传热的节能技术,即利用多孔透气性介质在高温流体中的对流辐射能量转换特性,用于强化高温烟气向被加热体的热量传递,减少排气的热量损失,从而降低燃料消耗。理论和实际应用已充分表明,这种技术是成功的,在工业应用中显示出优良的技术经济效益,可在多种高温加热、燃烧系统中推广、应用。一、基本原理在高温系统中,工作流体往往是气体,而气体间的热交换率是很低的,一般说来,气体吸收和发射热辐射的能力比较差。而固体在高温条件下却具有热辐射的优势,本技术就是要
In recent years, a new energy-saving technology that enhances heat transfer at home and abroad is introduced, which uses the convective radiation energy conversion characteristics of porous air-permeable medium in high-temperature fluid to enhance the heat transfer of high-temperature flue gas to the body to be heated , Reduce the exhaust heat loss, thereby reducing fuel consumption. Theoretical and practical applications have fully demonstrated that this technology is successful and has shown excellent technical and economic benefits in industrial applications and can be popularized and applied in many high-temperature heating and combustion systems. First, the basic principle In the high temperature system, the working fluid is often gas, and the gas heat exchange rate is very low, in general, the ability of gas absorption and emission of thermal radiation is relatively poor. The solid at high temperatures but has the advantages of thermal radiation, the technology is to