Pressure Losses across Multiple Fittings in Ventilation Ducts
Joint Authors
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-12-09
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Medicine
Information Technology and Computer Science
Abstract EN
The accurate prediction of pressure losses across in-duct fittings is of significance in relation to the accurate sizing and good energy efficiency of air-delivery systems.
Current design guides provide design methods and data for the prediction of pressure losses only for a single and isolated fitting.
This study presents an investigation of pressure losses across multiple interactive in-duct fittings in a ventilation duct.
A laboratory measurement of pressure losses across one fitting and multiple fittings in a ventilation duct is carried out.
The pressure loss across multiple interactive fittings is lower than that across multiple similar individual fittings, while the percentage decrease is dependent on the configuration and combination of the fittings.
This implies that the pressure loss across multiple closely mounted fittings calculated by summing the pressure losses across individual fittings, as provided in the ASHRAE handbook and the CIBSE guide, is overpredicted.
The numerical prediction of the pressure losses across multiple fittings using the large-eddy simulation (LES) model shows good agreement with the measured data, suggesting that this model is a useful tool in ductwork design and can help to save experimental resources and improve experimental accuracy and reliability.
American Psychological Association (APA)
Ai, Z. T.& Mak, C. M.. 2013. Pressure Losses across Multiple Fittings in Ventilation Ducts. The Scientific World Journal،Vol. 2013, no. 2013, pp.1-11.
https://search.emarefa.net/detail/BIM-1011658
Modern Language Association (MLA)
Ai, Z. T.& Mak, C. M.. Pressure Losses across Multiple Fittings in Ventilation Ducts. The Scientific World Journal No. 2013 (2013), pp.1-11.
https://search.emarefa.net/detail/BIM-1011658
American Medical Association (AMA)
Ai, Z. T.& Mak, C. M.. Pressure Losses across Multiple Fittings in Ventilation Ducts. The Scientific World Journal. 2013. Vol. 2013, no. 2013, pp.1-11.
https://search.emarefa.net/detail/BIM-1011658
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1011658