Find the NPSHA from below data: H = Liquid level above pump centerline = +5 feet; Pa = Atmospheric pressure = 14.7 psi - the tank is at sea level; Suction and Discharge piping = 2 inch diameter, plus two 90° regular screwed elbow = total length = 10 feet; • Pumping =100 gpm @68°F – 10 ft/s as maximum velocity; • Pv = Vapor pressure of 68°F water = 0.339 psia (see table 02); • Sg = Specific gravity = 1.0 (fresh cold water); NPSHR (net positive suction head required, as per the pump curve) = 9 feet. %3D %3D STATIC DISCHARGE HEAD STATIC SJCTION HEAD
Find the NPSHA from below data: H = Liquid level above pump centerline = +5 feet; Pa = Atmospheric pressure = 14.7 psi - the tank is at sea level; Suction and Discharge piping = 2 inch diameter, plus two 90° regular screwed elbow = total length = 10 feet; • Pumping =100 gpm @68°F – 10 ft/s as maximum velocity; • Pv = Vapor pressure of 68°F water = 0.339 psia (see table 02); • Sg = Specific gravity = 1.0 (fresh cold water); NPSHR (net positive suction head required, as per the pump curve) = 9 feet. %3D %3D STATIC DISCHARGE HEAD STATIC SJCTION HEAD
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Transcribed Image Text:Find the NPSHA from below data:
H = Liquid level above pump centerline = +5 feet;
Pa = Atmospheric pressure = 14.7 psi - the tank is at sea level;
Suction and Discharge piping = 2 inch diameter, plus two 90° regular screwed
elbow = total length = 10 feet;
Pumping =100 gpm @68°F - 10 ft/s as maximum velocity;
Pv = Vapor pressure of 68°F water = 0.339 psia (see table 02);
Sg = Specific gravity = 1.0 (fresh cold water);
NPSHR (net positive suction head required, as per the pump curve) = 9 feet.
STATIC
DISCHARGE
HEAD
STATIC
SJCTION
НЕАD
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