1. What is Head Pressure?

Head pressure in a water tank refers to the pressure exerted by a column of water at the bottom of the tank. It is directly proportional to the height of the water column above the measurement point.

2. How Does the Calculator Work?

The calculator uses the head pressure formula:

Where:

• \( H \) — Head pressure (m)
• \( h \) — Water level height (m)

Explanation: The head pressure in meters of water column is equal to the height of the water column above the measurement point.

3. Importance of Head Pressure Calculation

Details: Calculating head pressure is essential for designing water supply systems, determining pump requirements, and ensuring proper water flow in plumbing systems.

4. Using the Calculator

Tips: Enter the water level height in meters. The value must be non-negative.

5. Frequently Asked Questions (FAQ)

Q1: What units are used for head pressure?
A: Head pressure is typically measured in meters (m) or feet (ft) of water column.

Q2: How does head pressure relate to water pressure?
A: Head pressure in meters can be converted to pressure in kPa by multiplying by 9.81 (gravity acceleration).

Q3: Does the tank shape affect head pressure?
A: No, head pressure depends only on the height of water above the measurement point, not on the tank shape or volume.

Q4: What is the maximum head pressure in a typical water tank?
A: This depends on the tank height. Residential water tanks typically have head pressures of 10-30 meters.

Q5: How is head pressure used in pump selection?
A: Pumps must be selected to overcome the total head pressure, which includes static head and friction losses.