Friction Loss Equations for Hydropower Facilities

by Ed A. Toms, Engineering Consultants Inc, Englewood, United States,
E. June Busse, Engineering Consultants Inc, Englewood, United States,
Curtis A. Thompson, Engineering Consultants Inc, Englewood, United States,

Document Type: Proceeding Paper

Part of: Hydraulic Engineering


Many water suppliers are pursuing economic benefits from water supply and distribution systems through development of hydropower facilities on pipelines. Excessive pressure head that used to be dissipated by pressure relief valves or other energy dissipation devices is now analyzed for potential hydropower development. Feasibility assessment of these potential developments is based on benefit to cost economic analyzes that are dependent on hydraulic friction loss calculations and pipeline roughness assumptions that can vary significantly. This paper presents sensitivity analyses that compare the effect of widely used pipe friction loss equations on hydropower feasibility analyses and facility sizing.

Subject Headings: Sensitivity analysis | Hydro power | Water supply systems | Friction | Hydraulic roughness | Water pipelines | Fluid flow

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