Studies on thermal responses of sprinkler heads in atrium buildings with fire field models
✍ Scribed by R. Yin; W.K. Chow
- Publisher
- John Wiley and Sons
- Year
- 2001
- Tongue
- English
- Weight
- 227 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0308-0501
No coin nor oath required. For personal study only.
✦ Synopsis
Sprinklers are commonly sited in the high headspace atrium of a building where such systems are required. It was questioned whether sprinkler heads would be activated in the case of a 5re. A 5re modelling technique was applied to estimate the actuation time of sprinkler heads located in the atrium ceiling. The response time of sprinkler heads to a 5re in a shop at a high level adjacent to the atrium roof was calculated. A self-developed FORTRAN code together with the CFD model CFX4.2 were used to simulate the atrium 5re environment. The standard k-model was used with two key parameters, di4usion coe7cient and e4ective Prandtl number tuned. A comparison with some experiments reported in the literature was made. Satisfactory agreement between the predicted and measured results was found.