Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/37612
Title: Minimum pumping energy of tree-shaped water supply networks for probabilistic demands in built environment
Authors: Wong, LT 
Mui, KW 
Cheung, CT
Issue Date: 2012
Source: Proceedings of the ASME 2012 International Mechanical Engineering Congress and Exposition, Houston, Texas, USA, November 9–15, 2012, v. 1, paper no. IMECE2012-85908, p. 1605-1611 How to cite?
Abstract: Minimization of pumping energy is a major concern for designing sustainable water supply in buildings. Modular designs of tree-shaped water supply piping system, such as 2 by N array include water cisterns of water closet in public toilets, washbasin taps in schools are commonly found in building complexes. Potable water demands in water systems serving built environment are unsteady, random and intermittent. However, the existing statistical Hunter-based probabilistic approaches to pipe sizing, however, do not consider the minimization of pumping energy for water distribution through proper selection of pipe radii.
This paper demonstrates a pipe sizing method with probabilistic demands for optimizing pipe friction energy loss constrained by the fixed pipeline volume. A mathematical model for pumping energy optimization in infinite tree-shape water supply piping networks for probabilistic demands is proposed. Compared with the Hunter’s based probabilistic approach in sizing an 8-section tree-shape water supply network for demand of probabilities 0.1 and 0.2, the proposed method offers reduction potentials of pipe friction energy loss of 12% and 43% respectively. With piping systems of pipe radius ratios, the optimal tree-shape networks are also determined.
URI: http://hdl.handle.net/10397/37612
ISBN: 978-0-7918-4522-6
DOI: 10.1115/IMECE2012-85908
Appears in Collections:Conference Paper

Access
View full-text via PolyU eLinks SFX Query
Show full item record

Page view(s)

20
Last Week
1
Last month
Checked on Aug 21, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.