In/Rev Gpm Formula For Calculator Conversion

GPM Formula:

\[ GPM = \frac{(in³/rev \times RPM)}{231} \]

GPM (gal/min):

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1. What is the In/Rev to GPM Conversion?

The In/Rev to GPM conversion calculates the flow rate in gallons per minute (GPM) based on the displacement per revolution (in³/rev) and the rotational speed (RPM). This is commonly used in hydraulic systems and pump calculations.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ GPM = \frac{(in³/rev \times RPM)}{231} \]

Where:

\( in³/rev \) — Displacement per revolution (cubic inches per revolution)
\( RPM \) — Rotational speed (revolutions per minute)
\( 231 \) — Conversion factor (1 gallon = 231 cubic inches)

Explanation: The formula converts the volumetric displacement per revolution combined with rotational speed into a flow rate in gallons per minute.

3. Importance of GPM Calculation

Details: Accurate GPM calculation is crucial for designing hydraulic systems, selecting appropriate pumps, determining flow requirements, and ensuring proper system performance in various industrial applications.

4. Using the Calculator

Tips: Enter the displacement in cubic inches per revolution and the rotational speed in RPM. Both values must be positive numbers greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: Why is 231 used in the formula?
A: 231 is the conversion factor since 1 US gallon equals exactly 231 cubic inches.

Q2: Can this formula be used for all types of pumps?
A: This formula works for positive displacement pumps where the displacement per revolution is known and constant.

Q3: What are typical GPM values for hydraulic systems?
A: GPM values vary widely depending on the application, from less than 1 GPM for small systems to over 100 GPM for large industrial hydraulic systems.

Q4: How does temperature affect the calculation?
A: While the basic calculation remains the same, temperature can affect fluid viscosity and pump efficiency, which may impact actual flow rates.

Q5: Can this calculator be used for metric units?
A: This calculator uses imperial units. For metric calculations (cc/rev to L/min), a different conversion factor would be needed.