1. What is Head Pressure?

Head pressure is the height of a liquid column that a pump can create from the kinetic energy imparted to the liquid. It's a key parameter in pump selection and system design.

2. How Does the Calculator Work?

The calculator uses the head pressure formula:

Where:

• \( H \) — Head pressure (meters)
• \( P \) — Pressure (pascals, Pa)
• \( \rho \) — Water density (kg/m³, typically 1000 kg/m³)
• \( g \) — Gravity (m/s², typically 9.81 m/s²)

Explanation: The equation converts pressure to an equivalent height of water column, accounting for water density and gravitational acceleration.

3. Importance of Head Pressure Calculation

Details: Accurate head pressure calculation is crucial for proper pump selection, system design, and ensuring adequate water flow in piping systems.

4. Using the Calculator

Tips: Enter pressure in pascals (Pa), water density in kg/m³ (default is 1000 for pure water), and gravitational acceleration in m/s² (default is 9.81). All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between head and pressure?
A: Head is a measurement of the height of liquid column, while pressure is the force per unit area. They are related but describe different aspects of fluid systems.

Q2: Why is water density important?
A: Different liquids have different densities, which affects the head pressure calculation. The default value is for pure water at 4°C.

Q3: How does temperature affect the calculation?
A: Water density changes with temperature (about 998 kg/m³ at 20°C vs 1000 kg/m³ at 4°C), which slightly affects the head pressure calculation.

Q4: What are typical head pressure values?
A: Residential water systems typically need 30-50 meters head, while industrial applications may require much higher values.

Q5: Can I use this for other liquids?
A: Yes, but you must use the correct density for the specific liquid you're working with.