ELEM.PRIN.OF CHEMICAL PROC.-W/ACCESS
ELEM.PRIN.OF CHEMICAL PROC.-W/ACCESS
4th Edition
ISBN: 9781119330745
Author: FELDER
Publisher: WILEY
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Chapter 3, Problem 3.59P
Interpretation Introduction

(a)

Interpretation:

The height of mercury above the bottom of the manometer in the arm connected to the pipe is to be calculated.

Concept introduction:

The gauge pressure (Pg) is the difference between the actual pressure (P) and atmospheric pressure (Pa). Since the gas manometer is not flowing, the manometer equation is expressed as,

PgPm=0PgρmgΔh=0(Pm=ρmgΔh)Δh=Pgρmg

Interpretation Introduction

(b)

Interpretation:

The value of gas pressure, if the gas is flowing at the given mercury level is to be calculated.

Concept introduction:

The gauge pressure (Pg) is the difference between the actual pressure (P) and atmospheric pressure (Pa). Since the gas is flowing, the manometer equation is expressed as,

Pg+ρmgh1ρmg[h(H+h1)]=0Pg=ρmg[h(H+h1)]ρmgh1=ρmg[hHh1h1]Pg=ρmg[hH2h1]

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ELEM.PRIN.OF CHEMICAL PROC.-W/ACCESS

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