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net head

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net head [′net ′hed]
(fluid mechanics)
The difference in elevation between the last free water surface in a power conduit above the waterwheel and the first free water surface in the conduit below the waterwheel, less the friction losses in the conduit.


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horsepower] = [rho] * g * Q * H (1) where [rho] is the fluid density, g is the gravitational acceleration constant, Q is the volume flow rate, and H is the net head of the blower.
From this year, all keepnets and landing nets (not including handles) will be provided free of charge on all match days, and pleasure anglers can hire keepnets at a nominal fee, while landing net heads will be provided free of charge.
Perhaps it's time Kitty and I acted like grown-ups and sorted out the thorny problem of who is the greatest net head of all.
 
 
 
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