R020932J1, Install Manual

Section I I - General Information

g = Acceleration of gravity = 32.2 ft/s 2 (9.8 m/s 2 ) k = Liquid factor of ... 1.5 for water 1.4 for deaerated water 1.3 for semi-closed receiver water

Table 2-5: Clayton Pump Speeds

Generator Pump Speed (RPM)

SF25 SF35 SF50 SF75 SF100 SF125 SF150 SF200

336

294

330

372

330

384

432

288

Since this equation is based on ideal conditions of a relatively short, non-elastic suction line, calcu- lated values of H a should be considered as approximations only.

NOTE As pump speed (N) is increased, mean flow velocity (V) also increases. Therefore, acceleration head (H a ) varies as the square of pump speed.

NOTE Acceleration head varies directly with actual suction pipe length (L).

IMPORTANT ACCELERATION HEAD IS A SUCTION PIPING SYSTEM FACTOR THAT MUST BE ACCOUNTED FOR BY THE PIPING SYSTEM DESIGNER. MANUFACTURERS CANNOT ACCOUNT FOR THIS IN THEIR DESIGNS BECAUSE OF THE LARGE VARIETY OF APPLICATIONS AND PIPING SYSTEMS PUMPS ARE INSTALLED IN.

NOTE If acceleration head is ignored or miscalculated, significant pump and piping system problems (suction and discharge) may result.

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08/11/2016

Sect02_Genrl-SF_r.fm