Enter the propane flow, pressure drop, and orifice diameter into the calculator to determine the missing value.

Propane Orifice Size Calculator

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Propane Orifice Size Formula

The following equation represents the relationship between propane flow, orifice diameter, and pressure drop.

PF = 2500000 * d^2 * \sqrt(PD)
  • Where PF is the propane flow (BTU/hr)
  • d is the orifice diameter (inches)
  • PD is the pressure drop (inches WC)

To calculate the missing value, leave its field empty and enter values in the other two fields.

What is a Propane Orifice Size Calculator?

Definition:

A Propane Orifice Size Calculator is a tool that determines one missing parameter—propane flow, orifice diameter, or pressure drop—in a propane system, helping to ensure proper fuel delivery and system safety.

How to Calculate Propane Orifice Size?

Example Problem:

The following example outlines the steps and information needed to determine the orifice diameter.

First, determine the required propane flow. In this example, it is 500,000 BTU/hr.

Next, determine the pressure drop. In this example, it is 0.5 inches WC.

Finally, calculate the orifice diameter using the formula above:

PF = 2500000 * d^2 * sqrt(PD)

500000 = 2500000 * d^2 * sqrt(0.5)

d^2 = 500000 / (2500000 * sqrt(0.5))

d ≈ 0.532 inches

FAQ

What factors can affect the required orifice size?

The required orifice size can be influenced by the desired propane flow rate, system pressure drop, and specific application requirements. Variations in fuel quality, ambient conditions, and equipment specifications may also impact the optimal size.

How can I adjust the calculation for different operating conditions?

By inputting various values for propane flow, pressure drop, and orifice diameter, the calculator allows you to model different scenarios and determine the appropriate parameter for your system.

Is the calculator suitable for all types of propane systems?

While this calculator provides a good estimation based on the formula, it is recommended to consult with a professional engineer or the equipment manufacturer when designing or modifying a propane system to ensure safety and compliance with standards.