Disturbance Factor Steam Blowing Calculator

Formula

The formula to calculate the Disturbance Factor (DF) is:

\[ \text{DF} = \frac{\frac{1}{2} \cdot \text{pb} \cdot \text{Vb}^2}{\frac{1}{2} \cdot \text{pm} \cdot \text{Vm}^2} \]

Where:

\( \text{DF} \) is the disturbance factor
\( \text{pb} \) is the density at blow conditions (kg/m³)
\( \text{Vb} \) is the velocity at blow conditions (m/s)
\( \text{pm} \) is the density at MCR conditions (kg/m³)
\( \text{Vm} \) is the velocity at MCR conditions (m/s)

What is a Disturbance Factor?

A disturbance factor is a measure of the ratio of kinetic energy during blow conditions to the kinetic energy during MCR conditions. It quantifies the impact force exerted during steam blowing operations, which is crucial for ensuring proper cleaning and safety procedures in steam systems.

Example Calculation

Let's assume the following values:

Density at Blow Conditions (pb) = 5 kg/m³
Velocity at Blow Conditions (Vb) = 50 m/s
Density at MCR Conditions (pm) = 10 kg/m³
Velocity at MCR Conditions (Vm) = 25 m/s

Using the formula to calculate the Disturbance Factor:

\[ \text{DF} = \frac{\frac{1}{2} \cdot 5 \cdot 50^2}{\frac{1}{2} \cdot 10 \cdot 25^2} = \frac{6250}{3125} = 2 \]

The Disturbance Factor is 2.