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Prediction of Heat-Up Time of the Glass Plate by IR Heaters in an LCD-Panel Cleaning Process  

Kim, Yun-Ho (Dept. of Mechanical & Information Engineering, University of Seoul)
Ji, Tae-Ho (Dept of Mechanical Engineering, Korea Advanced Institute of Science and Technology)
Kim, Seo-Young (Thermal/Flow Control Research Center, Korea Institute of Science & Technology)
Rhee, Gwang-Hoon (Dept. of Mechanical & Information Engineering, University of Seoul)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.18, no.6, 2006 , pp. 526-533 More about this Journal
Abstract
The prediction of heat-up time of an LCD glass plate in LCD glass pre-treatment process has been implemented in the present study. Firstly, the analytical solution for one-dimensional radiation heat transfer from IR heaters to a LCD glass plate is obtained. When the surface temperature of the IR heaters is set at 473 K, the heat-up time of LCD glass to averaged temperature of 383K is 28 seconds. In addition, a three dimensional full CFD analysis using STAR-CD is implemented in an effort to consider the effect of 3-D heat loss through the furnace walls. From the results of the 3-D CFB analysis, the heat-up time increases up to 32.5 seconds under the same conditions. When the IR heater temperature in creases up to 573 K, the heat-up time decreases to 12 seconds for the one-dimensional analytical solution and to 13.5 seconds for the 3-D CFD analysis, respectively.
Keywords
LCD glass plate; IR; Heat-up time; Radiation heat transfer; Numerical analysis;
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