In infrared heating, the radiant intensity changes depending on the distance between the heater and the workpiece, which results in differences in the attainable temperature.

In this experiment, the irradiation distance was set to 50 mm and 100 mm, and the temperature change caused by the difference in distance was examined.

A halogen point heater with parallel irradiation was used to irradiate a refractory brick, and the temperature was measured using a thermocouple placed at the center of the irradiated area.

This video presents a basic verification of the relationship between distance and attainable temperature in infrared heating.

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