MEASUREMENT AND CFD ANALYSIS ABOUT AIR-FLOW AND TEMPERATURE DISTRIBUTION IN THE FLOOR HEATING ROOM WITH A FORCED AIR SUPPLY OPENING

In Japan, sick house syndrome has been a problem owing to air tight houses and change of a life style.For this reason, the building standard law was revised in July, 2003, and it was defined that 0.5 times ormore per hour need to be ventilated in the case of a residential room.On the other hand, radiation heating systems, such as a floor heating, have spread in the residence inrecent years. The features of these heating systems are that an indoor air-flow distribution is uniform,that the distribution difference of an indoor vertical temperature is small, etc. However, it is hard to saythat there are detailed design data about air-flow distribution and thermal environment in case forcedventilating system is installed in the floor heating room. Therefore, in this study, it aimed at clarifyingair-flow and temperature distribution of a floor heating room model with a forced air supply opening. Asthe first step that grasps thermal environment of the radiation heating room with a forced air supplyopening, detailed survey of thermal environment in this room was performed. Furthermore, in order toclarify the environmental performance in the floor heating room with the forced air supply opening,detailed CFD simulation by Large Eddy Simulation (LES) was performed, and confirmed predictiveaccuracy of the simulation by LES.