SimultaneousPeak Water Demands in Residential Areas
ReportNo WSAA 67
Waterdistribution networks must have sufficient capacity to ensure that minimum headrequirements at consumer supply offtakes are met during the peak demand period.To achieve this, the design of networks, using computer modelling, requires aclear understanding of the water usage patterns of consumers during thisperiod.
Existingmodels used by the Water Authority of Western Australia have recognised thatthe peak water usages by individual consumer services occur at varying times,giving a diversity effect, but have assumed that the distribution of demand ateach service can be described statistically as a normal distribution.
Theaim of this study was to assess diversity effects during times of peak wateruse in the Perth summer and involved the recording of instantaneous water useby a sample of 84 Perth households continuously over a period of three months.
Themajor findings of the study are:
In addition the study developed methodologies for theoptimal collection and analysis of instantaneous demand data.
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