공기층을 포함한 이중층 강판의 열전달 특성에 대한 실험 및 해석적 연구

In this study, a non-load heating experiment was performed to determine the effect of air layer application and surface emissivity within the air layer on the heat transfer of steel plates, the temperature change trend for each specimen was also analyzed through heat transfer analysis. Furthermore, the temperature of the non-heating surface was predicted by performing variable analysis according to the air layer ratio of the total thickness and the change in surface emissivity within the air layer. About the predicted temperature, the heat transfer of the steel plates with and without an air layer was quantified using an equivalent temperature coefficient, and an optimal air layer structure that minimizes heat transfer was proposed. In the proposed optimal air layer structure, the heat transfer of the double-layer steel plates were established through the equivalent temperature coefficient function according to the change in surface emissivity within the air layer.