1. What is Head Range in Pumps?

The Total Dynamic Head (TDH) range determines the operating head range for pumps based on system requirements. It specifies the minimum and maximum head that the pump needs to overcome to move fluid through the system.

2. How Does the Calculator Work?

The calculator uses the simple head range equation:

Where:

• \( TDH_{min} \) — Minimum required head (ft)
• \( TDH_{max} \) — Maximum required head (ft)

Explanation: The range between minimum and maximum head determines the operating window for pump selection and system design.

3. Importance of Head Range Calculation

Details: Accurate head range calculation is crucial for proper pump selection, ensuring the pump can handle system requirements while operating efficiently.

4. Using the Calculator

Tips: Enter the minimum and maximum head values in feet. The maximum head must be greater than or equal to the minimum head.

5. Frequently Asked Questions (FAQ)

Q1: What factors determine minimum and maximum head?
A: System elevation changes, pipe friction losses, pressure requirements, and any variable operating conditions.

Q2: How does head range affect pump selection?
A: The pump's performance curve must cover the required head range at the desired flow rates.

Q3: What units are used for head measurement?
A: Typically measured in feet (ft) in US units or meters (m) in metric systems.

Q4: What if my system has variable head requirements?
A: Consider all operating scenarios to determine the full range of possible head requirements.

Q5: How does head relate to pressure?
A: Head can be converted to pressure using the specific gravity of the fluid (1 psi = 2.31 ft head for water).