Abstract
In this study, we tried to develop a numerical model evaluating thermal radiant environment in the kitchen in an unsteady manner analyzing a three-dimensional heat transfer by convection, thermal radiation and conduction. The algorithm which enables to analyze the heat transfer by thermal radiation with high accuracy developed by authors is built into the model. We compared analyzed results such as the temporal variation of surface temperature on a wall around the IH cooking heater and gas range with experimental ones when the water was boiled and examined the verification of the model.