Chapter 6, Problem 6.27P

Interpretation Introduction

Interpretation: The reading of differential manometer in inches of mercury is to be calculated.

Concept introduction:

The pressure is calculated by applying the Bernoulli’s equation between two points.

The Bernoulli’s equation between two points is,

  $\frac{P_1}{\rho }+\frac{v_1^2}{2}+g{z}_1=\frac{P_2}{\rho }+\frac{v_2^2}{2}+g{z}_2$

The reading of differential manometer is calculated by the pressure difference by the hydrostatic pressure.

The formula for calculating the differential manometer reading is,

  $h_{mercury}=R_m\left(1-\frac{S.G{.}_{water}}{S.G{.}_{mercury}}\right)$