Subject: Losses in supply infrastructure Posted: 11/6/2007 Viewed: 33658 times
Losses in supply infrastructure Refik Samet samet samet@eng.ankara.edu.trDear friends,
I am interested in modeling the losses in supply infrastructure using WEAP. Does anybody have any experience to determine where the losses are greatest in supply infrastructure?
Arthur Chapman
Subject: Losses in supply infrastructure Posted: 11/8/2007 Viewed: 33648 times
Losses in supply infrastructure Arthur Chapman achapman achapman@csir.co.zaRefik Samet asked:
"I am interested in modeling the losses in supply infrastructure using WEAP. Does anybody have any experience to determine where the losses are greatest in supply infrastructure? "
The greatest losses are usually in urban areas, particularly where the distribution infrastructure is ageing.
-- This message is subject to the CSIR's copyright terms and conditions, e-mail legal notice, and implemented Open Document Format (ODF) standard. The full disclaimer details can be found at http://www.csir.co.za/disclaimer.html.
This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. MailScanner thanks Transtec Computers for their support.
Deleted User
Subject: RE: Losses in supply infrastructure Posted: 11/8/2007 Viewed: 33643 times
RE: Losses in supply infrastructure Jeff Rempel jeffreyrempel jeffrey.rempel@postgrad.plymouth.ac.ukDear Refik,
As part of a groundwater management strategy that I developed for the City of Calgary in 2005 we estimated urban groundwater recharge from surface wat er fed supply mains.
According to the folks i spoke to from city infrastructure - waterworks, th ey lose approximately 12 % of water from the water main connections and L's . I would suggest that connections would be responsible for the majority o f losses but do not have a reference for you.
Sincerely,
Jeff M. Rempel, B.Sc. President / Owner - PhilEco Environmental Consulting Joint Masters in Water and Coastal Management - M.Sc. Candidate University of Plymouth, UK Ph: 0 7964396802
Dr. Mohammad Rayej
Subject: Supply Losses Posted: 11/8/2007 Viewed: 33622 times
Supply Losses Mohammad Rayej rayej rayej@water.ca.govGenerally, major losses in supply infrastructure (Storage and Conveyance) are direct evaporation and seepage. where both can be modeled by WEAP.
On Storage side, direct evaporation is a major loss which can be explicitly specified in WEAP's Reservoir module.
On Conveyance side, "irrecoverable" seepage loss and evaporation can be modeled as loss in Transmission Link expressed a fraction of supply delivered at the upstream end of the Link. The "recoverable" seepage losses, however, can be captured and routed to a ground water element in WEAP.
************************************************************** Mohammad Rayej, Ph.D., P.E. Senior Engineer, W.R. California Department of Water Resources Statewide Water Planning Branch 901 P Street, 2nd Floor Sacramento, CA 94236 (916)-653-8017 rayej@water.ca.gov