Abstract
The thermal environment in an air conditioned room with a cooling jet and a cooling panel on the ceiling is analyzed by means of numerical simulation which consists of the interactive heat transfer analysis between convection and radiation. The turbulence model used is the standard k-ε model. The convective heat transfer at wall is calculated using the convective heat transfer coefficient, α_c. The radiative heat transfer is calculated by means of Gebhart's absorption factor method. The results of the simulation are compared with those of the experiment. Followings are revealed by the analysis mentioned above: (1) The correspondence between the simulation and the experiment is faily good. (2) In the simple cooling jet system without cooling panel, a significant down draft into the occupied zone is observed. (3) However, the combination system of cooling jet and cooling panel is effective for reducing the down draft and decreasing the effect of large heat convection from the outer wall. (4) The value of convective heat transfer is almost the same with that of the radiative heat transfer at each wall.
