Experimental and numerical analysis of natural ventilation with combined light/vent pipes

✍ Scribed by Armando C. Oliveira; António R. Silva; Clito F. Afonso; Szabolcs Varga

• Book ID: 104395162
• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 369 KB
• Volume: 21
• Category: Article
• ISSN: 1359-4311
• DOI: 10.1016/s1359-4311(01)00053-9

✦ Synopsis

Both experimental and numerical procedures were developed for studying natural ventilation in combined light/vent pipes. An experimental tracer gas technique was used to measure ventilation rates in a test cell. Two dierent pipe terminals were simultaneously used, dividing the cell in two identical volumes, in order to allow a direct comparison of their performance. A 3D numerical model was developed using AN SYS AN SYS 5 .5/ 5.5/ FLOTRAN FLOTRAN. Experimental and numerical results are shown and compared. It is concluded that pipe terminals signi®cantly enhance ventilation, that one type of terminal has a better performance and that the numerical model underestimates measured ¯ows.