Calculation of Efficiencies at flows above peak efficiency flow of Francis turbines by RETSCREEN® ENGINEERING & CASES TEXTBOOK

Calculation of Efficiencies at flows above peak efficiency flow of Francis turbines by RETSCREEN® ENGINEERING & CASES TEXTBOOK

1Specific speed based on flow:nq-
2Design flow:Qdm^3/sQd>Qp
3Runner throat diameter:dm-
4Coefficient:Rm(default = 4.5)Turbine manufacture/design coefficient
5Flow:Qm^3/sQ>Qp
6GraphPlot Input Data:
7Number of gridlines of Graph x-axis, y-axis -
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Keyword・Reference・Remarks・History

LaTex

Keyword

Efficiencies at flows above peak efficiency flow, Drop in efficiency at full load and Efficiency at full load,Efficiencies at flows below peak efficiency flow,Peak efficiency flow,Turbine peak efficiency,Runner size adjustment to peak efficiency,francis turbines,specific speed based on flow, Runner throat diameter,turbine manufacture/design coefficient

Reference

[1]:RETScreen® International『CLEAN ENERGY PROJECT ANALYSIS:RETSCREEN® ENGINEERING & CASES TEXTBOOK SMALL HYDRO PROJECT ANALYSIS CHAPTER』.pp.37-51.

Remarks

・er:『Efficiency at full load』(Reference[1])
・^ep:『Drop in efficiency at full load』(Reference[1])
・eq:『Efficiencies at flows above peak efficiency flow』(Reference[1])
・Qp:『Peak efficiency flow』(Reference[1])
・Qd:『design flow(flow at rated head and full gate opening in m^3/s)』(Reference[1])
・ep:『Turbine peak efficiency』(Reference[1])
・Rm:『turbine manufacture/design coefficient(2.8 to 6.1; default = 4.5).』(Reference[1])
・^ed:『Runner size adjustment to peak efficiency』(Reference[1])
・^enq:『Specific speed adjustment to peak efficiency』(Reference[1])
・nq:『specific speed based on flow』(Reference[1])
・d:『runner throat diameter』(Reference[1])
・Making Equation Image is powered by CODECOGS

History

・2011/03/21:Upload

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