A standard 0.5-in. flange-tap orifice is installed in a straight horizontal length of standard 2-in. steel pipe (i.d. = 2.067 in.). The pipe carries a steady flow of dry air at 85°F (μ = 0.18 centipoise). A vertical U-tube manometer indicates a differential head of 70 mmHg when connected across the orifice. When the upstream leg of the manometer is disconnected from the orifice and left open to the atmosphere, the manometer reading indicates a static head of 10 mmHg gage at the downstream tap. The barometric pressure is 745 mmHg. Calculate the orifice velocity of dry air in feet per second. The following data applies turbulent flow, Y = 0.973.
A standard 0.5-in. flange-tap orifice is installed in a straight horizontal length of standard 2-in. steel pipe (i.d. = 2.067 in.). The pipe carries a steady flow of dry air at 85°F (μ = 0.18 centipoise). A vertical U-tube manometer indicates a differential head of 70 mmHg when connected across the orifice. When the upstream leg of the manometer is disconnected from the orifice and left open to the atmosphere, the manometer reading indicates a static head of 10 mmHg gage at the downstream tap. The barometric pressure is 745 mmHg. Calculate the orifice velocity of dry air in feet per second. The following data applies turbulent flow, Y = 0.973.
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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A standard 0.5-in. flange-tap orifice is installed in a straight horizontal length of standard 2-in. steel pipe (i.d. = 2.067 in.). The pipe carries a steady flow of dry air at 85°F (μ = 0.18 centipoise). A vertical U-tube manometer indicates a differential head of 70 mmHg when connected across the orifice. When the upstream leg of the manometer is disconnected from the orifice and left open to the atmosphere, the manometer reading indicates a static head of 10 mmHg gage at the downstream tap. The barometric pressure is 745 mmHg. Calculate the orifice velocity of dry air in feet per second. The following data applies turbulent flow, Y = 0.973.
a. 243 b. 267 c. None of these d. 293 e. 274
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