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근적외선 가열 시스템의 냉각 성능에 대한 수치적인 연구
김응복(Eung-Bok KIM),한민섭(Minsub HAN),김제덕(Jae-Duck KIM),최원택(Won-Taek CHOI),정영균(Young-Guen JUNG),이승민(Seung-Min LEE) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.11
The so called near-infra-red(NIR) heating system has advantages over the convectional convection-based systems in terms of heating uniformity and energy efficiency. However, when the glass temperature of the radiation lamp goes over a certain limit, it gets blackened and over-heated. The life of the radiation module then becomes severely limited. The high operating-temperature and radiative-heat-transfer of the system hinder detailed analysis of the reliability problem with an experimental approach alone. We develop a three dimensional heat-transfer model of the NIR heating system that can provide the temperature distribution on the glass lamp and the performance of the cooling system. We use a ray-tracing model for the radiation transport. The model is then conjugated with a commercial CFD code that solved the conductive and convective transports. The results of the simulation are compared with test data and a good overall agreement is shown.