Chapter 3, Problem 3.62P

Interpretation Introduction

(a)

Interpretation:

For each of the given reading, the pressure drop, $\Delta P(mmHg)$ acorss the orifice should be calculated.

Concept introduction:

The pressure of the Hg in manometer has a basic concept that the pressure of any two same height points must be equal.

The manometer has a differential formula:

$\Delta P=({\rho }_f-{\rho }_{ac})gh$

Where, ${\rho }_{ac}=0.791g/c{m}^3$ is acetone density and ${\rho }_f=1.10g/c{m}^3$ is fluid density.

The $g=9.807m/s^2$ is acceleration due to gravity and h is manometer reading.

Interpretation Introduction

(b)

Interpretation:

For, $\stackrel{.}{V}=K{(\Delta P)}^n$ verify graphically that the given orifice calibration data are correlated by this relationship and determine the value of K and n that best fit the data.

Concept introduction:

The graph has to be plotted taking log as:

$\ln \stackrel{.}{V}=n\ln (\Delta P)+\ln K$

Interpretation Introduction

(c)

Interpretation:

If the orifice meter has h=23mm, then determine volumetric, mass and molar flow rates of the acetone in the line.

Concept introduction:

The pressure of the Hg in manometer has a basic concept that the pressure of any two same height points must be equal.

The manometer has a differential formula:

$\Delta P=({\rho }_f-{\rho }_{ac})gh$

Where, ${\rho }_{ac}=0.791g/c{m}^3$ is acetone density and ${\rho }_f=1.10g/c{m}^3$ is fluid density.

The $g=9.807m/s^2$ is acceleration due to gravity and h is manometer reading.