Ezperimental Studies of the Attached Plane Jet Velocity Distribution after Impinging the Corner in a High Room
In ventilation applications, attached plane jet was used for office buildings environment as a measure of mixing ventilation, for example, with chilled beams. However, variations of a rooms geometry always pose a challenge to design indoor air flow pattern in terms of thermal comfort. The objective of this study is to set up an effect model to predict maximum velocity of attached plane jet after impinging the ceiling-wall comer in a room. A full-scale test chamber was built and an air supply device was installed on the ceiling supplying air towards an insulated wall. In experiments, three averaged slot velocities, 0.5, 1.0 and 2.0 m/s, were measured under isothermal conditions. An empirical jet model was constructed to predict the maximum jet velocity after the impingement in the ceiling-wall comer with an active chilled beam. The results show that the maximum jet velocity occurs in the near-wall region close to the wall surface after impinging the ceiling-wall comer. The calculated results by the model agree the measured results well at lower jet slot velocities. Further three dimensional studies are required for the accurate air flow configuration prediction.
Attached plane jet Air distribution Impinging jet Jet velocity Model
Guangyu Cao Mika Ruponen Jarek Kurnitski
Department of Energy Technology,Helsinki University of Technology,Finland Halton Oy,Finland
国际会议
The 6th International Symposium on Heating,Ventilating and Air Conditioning(第六届国际暖通空调学术会议)
南京
英文
1380-1387
2009-11-06（万方平台首次上网日期，不代表论文的发表时间）