1. What Is Total Dynamic Head (TDH)?

Total Dynamic Head (TDH) is the total equivalent height that a fluid is to be pumped, taking into account friction losses in the pipe. For concrete pumping applications, it represents the total pressure required to move concrete through the pipeline system.

2. How Does The Calculator Work?

The calculator uses the TDH formula:

Where:

• \( Elevation \) — Vertical height difference between pump and discharge point (ft)
• \( Losses \) — Friction and other pressure losses in the pipeline system (ft)

Explanation: The equation accounts for both the static lift (elevation difference) and dynamic losses (friction, bends, fittings) in the concrete pumping system.

3. Importance Of TDH Calculation

Details: Accurate TDH calculation is crucial for selecting the appropriate concrete pump, ensuring adequate pressure to move concrete through the pipeline, and preventing pump overload or system failure.

4. Using The Calculator

Tips: Enter elevation in feet (vertical distance from pump to discharge point) and losses in feet (calculated friction and fitting losses). Both values must be non-negative numbers.

5. Frequently Asked Questions (FAQ)

Q1: What factors contribute to losses in concrete pumping?
A: Losses include friction in pipes, losses from bends and elbows, losses from reducers and couplings, and losses from horizontal pipe runs.

Q2: How are friction losses typically calculated for concrete pumping?
A: Friction losses are usually calculated based on pipe diameter, length, concrete mix properties, flow rate, and number of bends/fittings.

Q3: What is a typical TDH range for concrete pumping applications?
A: TDH values vary widely but typically range from 50-500 feet depending on the project requirements and system configuration.

Q4: Why is TDH important for pump selection?
A: TDH determines the pressure requirements, which directly affects pump selection, power requirements, and pipeline design for concrete placement.

Q5: Can this calculator be used for other fluids besides concrete?
A: While the TDH concept applies to all fluids, the specific loss calculations for concrete differ significantly from water or other Newtonian fluids due to concrete's non-Newtonian properties.