| Keywords |
Solar radiation ; Passive solar house ; Concrete floor ; Simulation of heat transfer ; Thermal properties |
| Abstract |
The purpose of this study is to understand the influence of solar radiation on the room temperature when it enters concrete floor as the heat storage in direct heat gain system of passive solar house. In this study, simulation model which 2-dimensional heat transfer is assumed by dividing the floor is carried out. In addition, possibility of simulation of the high accurate heat transfer is experimented by investigating the thermal properties of heat transfer system in the simplified thermal model. As the result, simulation could be accomplished highly accurately by some major thermal properties of heat transfer system in the simplified model. Room temperature was practically simulated under some conditions in the instantaneous diffusing model of the floor influenced by solar radiation. Temperatures of each part of the floor as the thermal storage was largely dependent upon the positions by influence of direct solar radiation. It is necessary that thermal model considered heat transfer around the concrete floor incident solar radiation should be established in order to investigate heat radiant environment, the influence of cross heat radiation, and the positions between openings and thermal storage. |