Differential Pressure Calculator

What is Differential Pressure?

Differential pressure is the difference in pressure between two points in a fluid system. It's a crucial measurement in various applications, including HVAC systems, industrial processes, and medical devices. Differential pressure can indicate flow rate, liquid level, or filter condition.

Formula

The formula for differential pressure is:

\[ \Delta P = P_1 - P_2 \]

Where:

• \( \Delta P \) is the differential pressure
• \( P_1 \) is the pressure at point 1
• \( P_2 \) is the pressure at point 2

Calculation Steps

Let's calculate the differential pressure between two points:

1. Given:
   • Pressure at point 1 (\( P_1 \)) = 150 kPa
   • Pressure at point 2 (\( P_2 \)) = 100 kPa
2. Apply the differential pressure formula: \[ \Delta P = P_1 - P_2 \]
3. Substitute the known values: \[ \Delta P = 150 \text{ kPa} - 100 \text{ kPa} \]
4. Perform the calculation: \[ \Delta P = 50 \text{ kPa} \]

Example and Visual Representation

Let's visualize differential pressure in a simple system:

This diagram illustrates:

• Two pressure points (P₁ and P₂) in a system
• The higher pressure at P₁ (150 kPa)
• The lower pressure at P₂ (100 kPa)
• The differential pressure (ΔP) between the two points (50 kPa)
• The direction of potential flow from high to low pressure