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Validation of Regression Models for the Fraction of Fitting Loss in Index Pipe Runs (Part 2: Water Distribution to Groups of Buildings)

Journal Name:

  • International Journal of Science and Engineering Investigations

Publication Year:

  • 2017

Key Words:

Author NameUniversity of Author
Abstract (2. Language): 
In many practical situations, the approximation of the pressure loss due to pipe fittings in the first index run of a gravity-flow water distribution system (with the ultimate aim of estimating the total pressure loss in the index run), is a timesaving effort. In this regard, several percentages of the total frictional loss have been suggested to account for the total fitting loss. However, as those suggested percentages lack statistical basis, earlier studies by the authors had arrived at regression equations for predicting the fractions of the total head loss that are due to pipe fittings in index pipe runs. The present study aims at validating those regression models, for the scenarios of distribution to groups of buildings, by comparison of the regression results with those of case studies of distribution to existing functional groups of buildings. All regression equations appear to be valid within the limits of values of system parameters utilized in obtaining the regression models; as their percentages of variance from results of the case studies are all less than 20%; this percentage being a suggested threshold value for checking the validity.
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  • English

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International Journal of Science and Engineering Investigations, Volume 6, Issue 70, November 2017 54
www.IJSEI.com Paper ID: 67017-07
ISSN: 2251-8843
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