1. What is Discharge of Double Acting Reciprocating Pump?

The discharge of a double acting reciprocating pump refers to the volume of fluid delivered per unit time, neglecting the diameter of the piston rod. It is a key parameter in pump performance evaluation and system design.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Q \) — Discharge (m³/s)
• \( A_p \) — Area of piston (m²)
• \( L \) — Length of stroke (m)
• \( N \) — Speed (rpm)

Explanation: The formula calculates the theoretical discharge by considering the pump's geometric parameters and operating speed, assuming ideal conditions and neglecting piston rod effects.

3. Importance of Discharge Calculation

Details: Accurate discharge calculation is essential for pump selection, system design, and performance optimization in various industrial and hydraulic applications.

4. Using the Calculator

Tips: Enter piston area in m², stroke length in m, and speed in rpm. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why is the factor 2 used in the formula?
A: The factor 2 accounts for the double acting nature of the pump, where fluid is discharged during both forward and return strokes.

Q2: What are typical values for piston area and stroke length?
A: Piston area typically ranges from 0.001 to 0.1 m², while stroke length varies from 0.1 to 1 m depending on pump size and application.

Q3: How does speed affect discharge?
A: Discharge is directly proportional to speed. Higher RPM results in higher discharge, but practical limits exist due to mechanical constraints and efficiency considerations.

Q4: When is this calculation applicable?
A: This calculation is valid for ideal conditions where effects of piston rod diameter, leakage, and fluid compressibility are neglected.

Q5: What are the limitations of this formula?
A: The formula assumes perfect sealing, constant speed, and neglects real-world factors like fluid viscosity, pressure losses, and mechanical inefficiencies.