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众所周知,绝热技术与绝热材料的发展是建立在传热学基础上的,传热包括导热、对流、辐射和相变传热四种方式。近二百年来,人们对以多孔绝热材料为基础,对导热,对流传热及相应的绝热技术研究比较充分,而对热辐射以及用铝箔为反射绝热材料的绝热技术的研究直至近70年才趋成熟。许多实践证明,用多孔绝热材料无法解决的绝热问题,应用铝箔反射绝热材料,都轻而易举的解决了。因此铝箔冠有“超级绝热材料”的美称就不足为奇了。这里介绍的就是有关铝箔的绝热原理及其在各种工程中的应用而取得的节能效果。
As we all know, the development of thermal insulation technology and thermal insulation materials is based on heat transfer. Heat transfer includes heat conduction, convection, radiation and phase change heat transfer in four ways. In the past 200 years, people have studied thermal conductivity, convective heat transfer, and corresponding thermal insulation technologies based on porous thermal insulation materials. However, research on thermal radiation and thermal insulation technology using aluminum foil as a reflective thermal insulation material has been in progress for nearly 70 years. Only mature. Many practices have proved that the use of porous insulation materials cannot solve the problem of heat insulation, and the use of aluminum foil reflective insulation materials is easily solved. Therefore, it is not surprising that aluminum foil has a reputation as a “super insulation material.” Here is the energy-saving effect of the insulation principle of aluminum foil and its application in various projects.