EXPERIMENTAL STUDY OF TEMPERATURE FIELD DISTRIBUTION IN VENTILATION DUCTS WHEN SEDIMENT BURNING
The ventilation and air-conditions system of building supplies comfortable environment for work and life, however, because of the existence of sediment in ventilation ducts, air-conditions system possible become importance approach of fire spread and diffusion in buildings. Therefore, this paper analyzed influential factors of happening and spread of fire which were brought by sediment in air-conditions system. Experiments selected sawdust as a kind of sediment. When simulated fire scenarios, chose resistance coil to ignite sediment disposed in ventilation tube. The scopes of the testing included temperature distribution and influential length of hot smoke in ventilation tube under fire circumstance. Numerous thermocouples were installed at various cross sections and different measure dots within ventilation duct to measure temperature field. Results indicated that the factors such as air velocity and thickness of sediment had influence in speed of temperature distribution and length of hot smoke.
Q.LIU NP.LI J.GUAN J.LONG
Civil Engineering College, Hunan University,Changsha, 410082, China
国际会议
The 22nd International Congress of Refrigeration(第22届国际制冷大会)
北京
英文
2007-08-21（万方平台首次上网日期，不代表论文的发表时间）