Infrared energy produced by gas fired premix burners is in the medium wavelength (2‐4 micron) range of the IR spectrum. IR is ideal for drying, preheating, post treatment, annealing, and curing. Red‐Ray burners have infrared energy to convective energy output ratios of 2:1 for stainless steel burners to 1:2 for iron alloy burners. The emitters are nearly perfect “black bodies”, varying in emissivity from 0.85 to 0.95 depending on the operating temperature. The higher the temperature, the lower the emissivity and the shorter the wavelength output (closer to the visible range). Industries that typically use IR heating are textile, paper, food, carpet, industrial finishing, building materials and ceramics.
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