1. What is Pressure Head of Liquid?

Pressure Head is the vertical height of the free surface above any point in a liquid at rest. It represents the pressure energy per unit weight of the fluid and is measured in meters of liquid.

2. How Does the Calculator Work?

The calculator uses the Pressure Head formula:

Where:

• \( h \) — Pressure Head (Meter)
• \( p \) — Pressure (Pascal)
• \( S \) — Specific Weight of Liquid in Piezometer (N/m³)

Explanation: The formula calculates the equivalent height of liquid column that would produce the given pressure at the base.

3. Importance of Pressure Head Calculation

Details: Pressure head calculation is essential in fluid mechanics, hydraulics, and engineering applications to determine the energy content of fluids, design piping systems, and analyze fluid flow behavior.

4. Using the Calculator

Tips: Enter pressure in Pascal, specific weight in N/m³. Both values must be positive numbers greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is the relationship between pressure and pressure head?
A: Pressure head represents the height of fluid column that would produce the given pressure. It's a way to express pressure in terms of equivalent fluid height.

Q2: Why is specific weight used instead of density?
A: Specific weight (weight per unit volume) is used because pressure head represents energy per unit weight, making specific weight the appropriate conversion factor.

Q3: Can this calculator be used for any liquid?
A: Yes, as long as you know the specific weight of the liquid in the piezometer. Different liquids have different specific weights.

Q4: What are typical units for pressure head?
A: Pressure head is typically measured in meters (m) or feet (ft) of the liquid column.

Q5: How does pressure head relate to Bernoulli's equation?
A: In Bernoulli's equation, pressure head represents the pressure energy term, which along with elevation head and velocity head, remains constant along a streamline for ideal fluid flow.