Linden E, Hellstrom J, Cehlin M, Sandberg M
Bibliographic info:
Hong Kong, City University, Division of Building Science and Technology, 2001, proceedings of IAQVEC 2001, "Indoor Air Quality, Ventilation and Energy Conservation in Buildings: Fourth International Conference", held Changsha, Hunan, China, 2-5 October, 2

The instantaneous temperatures close to a diffuser for displacement ventilation have been measured by using a whole-field measuring method. The air temperature was measured indirectly by using infrared thermography with a digital infrared camera and a measuring screen. By moving the measuring screen the whole field around the diffuser was measured. A method has been developed for combining the tow-dimensional measurements to produce a three dimensional representation. The two-dimensional data has been transformed to fit in a three-dimensional system with the help of the software Excel and TecPlot. The test room, the supply device and the temperature field are all presented in a virtual world with the help of VRML. It is possible to 'walk around' in the room and observe from different angles. When whole- field methods are used a lot of data are collected. The method described in this paper could be a good way of presenting large amounts of data. It is also of great assistance in understanding the indoor climate. An additional benefit is in checking if there is a conflict between the positioning of ventilation outlets and room furnishings.