headrace pressure flow in steel pipes with solved design

(PDF) Optimum Design of Penstock for Hydro Projects

Penstock, a closed conduit, is an important component of hydropower projects. Various methods are available for optimum design of penstock. These methods are either based on empirical relations or ASME B31.3 Process Piping GuideLANL Engineering Standards Manual PD342 Chapter 17 Pressure Safety Section D20-B31.3-G, ASME B31.3 Process Piping Guide Rev. 2, 3/10/09 4 The Owner and Designer are responsible for compliance with the personnel and process qualification requirements of the codes and standards. In particular, the application of ASME B31.3 requires compliance with the Inspector qualification

Economic and energy loss minimization:design and

The headrace pressure tunnel is 5475 m long and completely concrete lined, with circular hydraulic section - = 2.60 m. The design flow is 18.6 m3/s. The static internal pressure within the tunnel varies between 30 m at the intake and 65 m at the surge tank bottom. The dynamic pressure near the surge tank reaches 90 m. The concrete lining of the Hazen-Williams Pressure Drop EquationThe Design Factor - c The design factor is determined for the type of pipe or tube used:The c-value for cast iron and wrought iron pipes or tubes ranges from 80 to 150, with average value 130 and design value 100.; The c-value for copper, glass or brass pipes or tubes ranges from 120 to 150, with average value 140 and design value 140.; The c-value for cement lined steel or iron pipes has Hydraulic Design of Surge Shaft - Definition and Design of Feb 04, 2019 · Design Discharge = 100.00. Cumecs:Headrace water level = 2500.00. m:Water level at HRT entrance = 2494.00. m:Factor of Safety = 1.60 Longitudnal slope of HRT = 0.10. m/m:Free Board in surge shaft = 0.50. m Hydraulic Design (Instantaneous closure) Flow velocity in HRT = 11.01. m/s:Wetted Parameter = 10.68. m:Mean Hydraulic Radius = 0.85. m:Resistence factor of Tunnel = 0.

Introduction to Pressure Surge Analysis (With PDF) What

Pressure Surge is a pressure wave that is caused by the kinetic energy of the moving fluid when there is a sudden change in flow velocity. What is the pressure surge in piping? If the high-velocity flow in a pipe is forced to stop or change direction suddenly, a pressure wave generates and moves back at the speed of sound in the liquid. JP3240417B2 - Construction method of headrace tunnel and JP3240417B2 JP22625592A JP22625592A JP3240417B2 JP 3240417 B2 JP3240417 B2 JP 3240417B2 JP 22625592 A JP22625592 A JP 22625592A JP 22625592 A JP22625592 A JP 22625592A JP 3240417 B2 JP3240417 B2 JP 3240417B2 Authority JP Japan Prior art keywords fiber tunnel sheet headrace concrete layer Prior art date 1992-08-25 Legal status (The legal status is an assumption Pipe And Blower Fan Fundamentals In ASP Design BioCycleFeb 20, 2013 · The formulas used are difficult to solve for pipe diameter, so first select pipe sizes and then calculate pressure drops and tweak the system in an iterative process. Pressure drop (or head loss) calculation is based on the Darcy-Weisbach formula, which factors in friction factor for the pipe material, length of pipe, flow velocity and pipe

Pipe Flow Calculator. Liquid or Gas Pipe Design - Pressure

P 1 = Upstream pressure, lb/ft 2 or N/m 2. P 2 = Downstream pressure, lb/ft 2 or N/m 2. Re = Reynolds number, unit-less. Q = Flow rate in pipe, ft 3 /s or m 3 /s. S = Weight density, lb/ft 3 or N/m 3. V = Velocity in pipe, ft/s or m/s. V 1 = Upstream velocity, ft/s or m/s. V 2 = Downstream velocity, ft/s or m/s. Pipe Flow Expert Design Details - Pipe Flow & Pressure

  • Piping Design and Pipeline ModelingFlow Rate and Pressure Drop CalculationsSolving The Piping DesignMethod of SolutionDesign-Variable Optimization of Hydropower Tunnels consists of a low pressure concrete tunnel (headrace) before the surge tank and one or more high-pressure steel pipes (penstock) between the surge tank and terminal valves that control flow pass-ing through the machines (Fig. 1). The surge tanks are supplied in the system for relief of large pressures created in the penstock, The Use of Excel Spreadsheet Templates for Pipe Flow
    • Pipe Flow/Head Loss Calculations with Excel Spreadsheet TemplatesCalculation of Frictional Head Loss Or Pressure DropCalculation of Required Pipe DiameterSummaryReferencesThis Post Is Part of The Series:Pipe Flow CalculationsChapter 6 - Design of PE Piping SystemsChapter 6 Design of PE Piping Systems 158 (1-1) (1-2) WHERE PR = Pressure rating, psi HDS = Hydrostatic Design Stress, psi (Table 1-1) A F = Environmental Application Factor (Table 1-2) NOTE:The environmental application factors given in Table 1-2 are not to be confused with the Design Factor, DF, used in previous editions of the PPI Handbook and in older standards.

      Pipe Flow Calculations - Clarkson University

      The power required to overcome friction is related to the pressure drop through . Power =PQ or we can relate it to the head loss due to pipe friction via Power =hQ f. Head Loss/Pressure Drop . The head loss . h f is related to the Fanning friction factor f through 2 f 2 LV hf Dg = or alternatively we can write the pressure drop as . 2 (2) L Pf V D =