Journal article
Capacity loss in siphonic roof drainage systems due to aeration
Building Research and Information: the international journal of research, development and demonstration, Vol.38(2), pp.206-217
2010
Abstract
An experimental investigation into air entrainment in siphonic roof drainage systems is presented. By injecting known quantities of air into a 4.7 m high experimental test rig, the effect of aeration on flow velocity and flow capacity in the siphonic system was determined. A preliminary relationship between air/water content and a decrease in system capacity was formulated. This indicated that system capacity can decrease by up to 40% for air/water ratios approaching 45%. At typical operational air/water ratios of approximately 10%, system capacity decreased by 16% from the assumed no-air-design situation. In addition, average velocities in the pipework decreased by 13% for air/water ratios of 35%. Friction and form losses were also measured and compared with theoretical values.
Details
- Title
- Capacity loss in siphonic roof drainage systems due to aeration
- Authors
- Terry Lucke (Author) - University of South AustraliaS Beecham (Author) - University of South Australia
- Publication details
- Building Research and Information: the international journal of research, development and demonstration, Vol.38(2), pp.206-217
- Publisher
- Routledge
- Date published
- 2010
- DOI
- 10.1080/09613210903236631
- ISSN
- 0961-3218
- Organisation Unit
- School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland
- Language
- English
- Record Identifier
- 99450012502621
- Output Type
- Journal article
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