Title: High infrared emissivity coating for energy conservation and protection of inner surfaces in furnaces

Authors: Imre Benko

Addresses: Department of Energy, Faculty of Mechanical Engineering, Technical, University of Budapest, H-1521 Budapest, Hungary

Abstract: The appearance of some new furnace construction materials, e.g. ceramic fibre insulations and high emissivity coatings (such as ||ENECOAT||) [1,2] requires the revision of the traditional wall structures. Research was done regarding a silicon carbide based furnace coating. Its emissivity is considerably greater than that of the material onto which it was applied. The basic phenomena resulting from the application of ||ENECOAT|| and its thermal effects were examined in the case of several continuous furnaces of brick factories. The increase of heat radiation due to ||ENECOAT|| coating of refractories decreases heat losses and results in better cooling of brick piles and some decrease in environmental pollution. The energy savings amounted to 4.8-6.2% and 3.8-4.4% in the case of natural gas fired and oil fired furnaces, respectively.

Keywords: energy conservation; refractory materials; ceramic fibre insulations; furnace; high emissivity coating.

DOI: 10.1504/IJGEI.2002.000931

International Journal of Global Energy Issues, 2002 Vol.17 No.1/2, pp.60-67

Available online: 18 Aug 2003 *

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