• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2003.08a
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• pp.27-30
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• 2003

In order to get the infrared ray radiator with high efficiency emission, the starting raw material $Fe_2O_3$ powder is heat-treated under the oxygen pressure log[$PO_2$] = -13~15 at $800^{\circ}C$ for 2hours. It has shown that the radiation rate was larger than 0.85 at the relatively high temperature($400^{\circ}C$), and decreased slowly with increasing the temperature from 50 to $400^{\circ}C$.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2006.05a
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• pp.448-452
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• 2006

Many kinds of electric heating appliance is used by user interface and desire. Far infrared ray heating system can use a kind of main heating appliance. This paper gives un saving amounts, energy curtailment money and payback period between far infrared ray heating system and existing electric heating appliance - EHP, electric air heater, electric radiator, electric floor heating system - from economy analysis.

• Journal of Industrial Technology
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• v.20 no.A
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• pp.239-245
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• 2000

Sintered $Al_2TiO_5$ has a very low thermal expansion and an infrared radiative selectively emitting large amounts of far infrared rays. However, it is week in mechanical strength. Spectral infrared emittance, thermal expansion coefficient, and mechanical strength of $Al_2TiO_5$-clay composites were studied to develop a material for far infrared radiators. The composites containing 10~50 mass% Jungsan clay had high emittance in the range of 2,000~500cm-1. The bending strength of the $Al_2TiO_5$-clay composites increased with increasing clay content. The $Al_2TiO_5$-clay composites with a clay content of 50mass% and heat-treated at $1,200^{\circ}C$ had a large strength for infrared radiators ; 86MPa. The average linear thermal expansion coefficient from $200{\sim}1,000^{\circ}C$ of the 50mass% jungsan clay containing compo sited heat-treated at $1,200^{\circ}C$ was lower than $3.87{\times}10-6/^{\circ}C$.