Actual Discharge Of Gear Wheel Pump Calculator

Formula Used:

\[ Q_{ga} = Q_{thg} \times \eta_{volg} \]

Actual Discharge Of Gear Wheel Pump (Q_ga):

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1. What is Actual Discharge Of Gear Wheel Pump?

Actual discharge of gear wheel pump refers to the real volume of fluid delivered by the pump per unit time, taking into account various efficiency losses that occur during operation.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ Q_{ga} = Q_{thg} \times \eta_{volg} \]

Where:

\( Q_{ga} \) — Actual discharge of gear wheel pump (m³/s)
\( Q_{thg} \) — Theoretical discharge of gear wheel pump (m³/s)
\( \eta_{volg} \) — Volumetric efficiency of gear wheel pump (0-1)

Explanation: The actual discharge is calculated by multiplying the theoretical discharge by the volumetric efficiency, which accounts for internal leakage and other losses in the pump.

3. Importance of Actual Discharge Calculation

Details: Calculating actual discharge is crucial for proper pump selection, system design, and performance evaluation in hydraulic systems and fluid power applications.

4. Using the Calculator

Tips: Enter theoretical discharge in m³/s and volumetric efficiency as a decimal between 0 and 1. Both values must be valid positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What factors affect volumetric efficiency in gear pumps?
A: Volumetric efficiency is affected by internal leakage, fluid viscosity, operating pressure, pump wear, and manufacturing tolerances.

Q2: How is theoretical discharge calculated?
A: Theoretical discharge is typically calculated based on pump geometry: Q_thg = (π × D × m × n × b) / 60, where D is pitch diameter, m is module, n is speed, and b is face width.

Q3: What is a typical range for volumetric efficiency?
A: Volumetric efficiency for gear pumps typically ranges from 0.80 to 0.95 (80-95%), depending on pump design and operating conditions.

Q4: Why is actual discharge less than theoretical discharge?
A: Actual discharge is less due to internal leakage, fluid compression, and other losses that occur within the pump during operation.

Q5: How can volumetric efficiency be improved?
A: Volumetric efficiency can be improved by reducing internal clearances, using higher viscosity fluids, operating at optimal speeds, and maintaining proper pump condition.