Question
A system where aniline is pumped at 77 F at a rate of 20 gal/min. The reservoir is at atmospheric pressure. The gauge pressure at
A system where aniline is pumped at 77 F at a rate of 20 gal/min. The reservoir is at atmospheric pressure. The gauge pressure at the end of the discharge line is 50 lbf/in2. The discharge line is 1.5 in. diameter schedule 40 (Internal diameter: 1.61 in.). The suction line friction is known to be 1,129 lbf*(ft/lb) and the discharge line is 5 ft long and has two 45 degree elbows and a fully open gate valve. The mechanical efficiency of the pump is 0.60 (60%). The density of aniline is 63.78 lb/ft3, its viscosity is 0.00255 lb/ft*s, and its vapor pressure at 77 F is 0.013 lbf/in2. Calculate a) the head developed by the pump in (lbf *ft)/lb and b) the total power at the input in hp. C) If the pump manufacturer specifies that it requires an NPSHR of 30 ft, will that pump be suitable for this service? K elbows: 0.35 K valve: 0.17
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