MARC 主機 00000nam 2200325 4500
001 AAINQ94265
005 20051208095322.5
008 051208s2004 eng d
020 0612942651
035 (UnM)AAINQ94265
040 UnM|cUnM
100 1 Colombo, Andrew Francesco
245 10 Energy use and leaks in water distribution systems
300 220 p
500 Source: Dissertation Abstracts International, Volume: 65-
10, Section: B, page: 5280
500 Adviser: Bryan Karney
502 Thesis (Ph.D.)--University of Toronto (Canada), 2004
520 Contemporary interest surrounding leaks is well documented
by the proliferation of water loss assessment and leak
detection models. The financial penalty caused by the loss
of billable water has traditionally served as the
motivation for this interest. Recently, water quality
concerns such as transient intrusion have added a new
dimension to the stimulus for leak related research.
Despite a growing recognition of the multifarious nature
of leakage, its influence on energy use, while implicitly
understood, has remained predominantly in the background.
This thesis introduces the notion of leaks and energy
consumption within a broader planning and modelling
context and endeavours to reveal the key physical
relationships that govern leaks and energy costs in a
system
520 In order to place the research in a wider context, a map
or Labyrinth outlining key aspects of water distribution
system design, modelling and operation and their
relationship to one another is presented and explained.
The term Labyrinth is employed to convey the involuted
nature of the web that connects these various interrelated
processes. Specific focus centres on resource scarcity and
the existence of a water-energy nexus. Assessment of the
physical relationships governing water loss and energy use
in leaky systems is realized via the analytical
investigation of single pipes and the simulation of
representative networks using the steady state analysis
software EPANET 2. The size and spatial distribution of
leaks, demand, storage, pumping strategy and resource
prices are several of the factors influencing the energy
and water loss response of systems to leakage. Because
leaks share certain attributes with legitimate system
demand, the possibility that leakage modelling may have
wider application as a surrogate or analogy for demand
representation is briefly explored
520 As part of a comprehensive strategy to make infrastructure
more efficient in the face of resource scarcity, mounting
financial cost and environmental degradation, the
possibility that leak repair can act as a hedge against
future growth in water demand is introduced. Specifically,
the connection between climate change and the possible
synergistic concurrence of peak water and energy demand is
considered in light of the water-energy nexus
590 School code: 0779
590 DDC
650 4 Engineering, Civil
690 0543
710 20 University of Toronto (Canada)
773 0 |tDissertation Abstracts International|g65-10B
856 40 |uhttp://pqdd.sinica.edu.tw/twdaoapp/servlet/
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