The Experimental Investigation to Study the Thermal Performance of a Silicon Carbide Coated Furnace

Abstract

This paper describes a new method which increases the radiation heat transfer of furnace
refractory. As heating-up time is decreased, the method also makes the operation of the furnace
more flexible. Application of silicon carbide furnace coating increases the emissivity of ceramic fiber
insulation by 40%. The phenomenon is illustrated by infrared gun and their temperature analysis.
IR-emissivity (εn, ∆λ) was measured by infrared gun. Industrial applications are also referred to.
The appearance of some new furnace construction materials, e.g. ceramic fiber insulations and high emissivity coatings (such as ’SiC coating’) requires the revision of the wall structure of some furnaces. Research was done regarding a silicon carbide (SiC) 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 ’SiC coating’ and its thermal effects were examined in the case of several continuous furnaces of brick factories. The increase of heat radiation due to SiC coating of refractories decreases the heat losses and results in the recuperator (cooling) part of the furnace a better cooling of brick piles and some decrease in environment pollution too.