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Efficiency of pumping from small circular sumps
Efficiency and minimum safe submergence of 4-in. vertical turbine tail-water recovery pump in circular sump are affected by side clearance and inflow velocity, but not by bottom clearance; minimum safe submergence of approximately 9 D is required to avoid vortex formation; reductions in normal pump efficiency as result of reduced side clearance or increase inflow velocity were most pronounced at low rate at which peak efficiency is normally attained; such reductions averaged approximately 2%, with maximum loss in efficiency of 4.6%.
Efficiency of pumping from small circular sumps
Efficiency and minimum safe submergence of 4-in. vertical turbine tail-water recovery pump in circular sump are affected by side clearance and inflow velocity, but not by bottom clearance; minimum safe submergence of approximately 9 D is required to avoid vortex formation; reductions in normal pump efficiency as result of reduced side clearance or increase inflow velocity were most pronounced at low rate at which peak efficiency is normally attained; such reductions averaged approximately 2%, with maximum loss in efficiency of 4.6%.
Efficiency of pumping from small circular sumps
ASCE -- Proc (J Irrigation Drainage Div)
Shah-Roody, A.M. (author) / Davis, J.R. (author)
1964
8 pages
Article (Journal)
English
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