Potential Benefits of Increased Surface Emissivity to Customers

Energy Savings: Less fuel is used for the same amount of heat input, alternatively same amount of fuel with faster product throughput.?

Increases life of Substrates at High Temperature Thermal Cycling: Corrosion Resistant.
Reduces shrinkage of LTM linings, and reduces heat loss through the refractory structure.
Steels are less exposed to thermal stress or oxidation thus increasing it’s life.
Reduce Warping of metal kiln car chassis and steel structures.
Reduction in Porosity of Ceramic Materials.
Production Increases: Faster Heat Ups and cool downs.
Product Uniformity: Reduces cold spots
Gives more uniform temperature.
Potentially decreased air emissions: due to less fuel used,
better heat transfer or more uniform combustion within the chamber could lead to cleaner emissions.

What is Emissivity and How Does it Work

Emissivity is a materials ability to absorb energy and reradiate it to a suitable cooler load. Emissivity works on the basis of being able to see the load, if applied to a surface in contact

With molten steel or hidden behind corresponding layers of insulation then the system is useless.

Energy is reradiated to the load through narrow higher energy infra red (IR) wavelength bands. All substrates/ surfaces either ceramic or steel have emissivity values so they are constantly absorbing and re-radiating heat. The higher the emissivity value the more efficient they will become at absorbing and re-radiating heat. However when the temperature increases most substrates emissivity values drop dramatically.

With a blackbody having a perfect reradiating surface being an emissivity value of 1 (which does not exist), Emi-Coat™ at an emissivity value of approx. ·90-.93 has the ability to maintain its high emissivity across the full temperature range of 0° - 1350°c, thus having the ability absorb heat and re-radiate it.

By applying the Emi-coat™ technology to the substrate hotface it increases the substrates surface emissivity throughout the temperature range and gives it the following benefits.