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Discharge Head Formula:
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Discharge head represents the net pressure head available at the pump discharge after accounting for suction conditions. It is a critical parameter in pump selection and system design, indicating the actual head the pump must generate to overcome system resistance.
The calculator uses the fundamental pump head equation:
Where:
Explanation: This calculation determines the effective head the pump delivers to the system, accounting for suction conditions that either assist or resist pump operation.
Details: Accurate discharge head calculation is essential for proper pump selection, system design, energy efficiency optimization, and preventing cavitation or insufficient flow conditions.
Tips: Enter total head and suction head in meters. Ensure values are positive and suction head does not exceed total head for valid results.
Q1: What is the difference between total head and discharge head?
A: Total head is the overall head developed by the pump, while discharge head is the net head available after subtracting suction head.
Q2: Can discharge head be negative?
A: No, discharge head should always be positive. A negative value indicates incorrect input data or system design issues.
Q3: How does suction head affect pump performance?
A: Positive suction head reduces the pump's workload, while negative suction head (suction lift) increases the energy required.
Q4: When is this calculation most important?
A: Critical during pump selection, system troubleshooting, and when designing pumping systems with varying suction conditions.
Q5: What units should be used for head measurements?
A: Meters are standard, but feet can be used with appropriate conversion (1 m = 3.281 ft).