1. What is the Propane Orifice Size Calculator?

The Propane Orifice Size Calculator helps determine the correct orifice size for propane-fueled generators based on BTU requirements, energy content of the fuel, and flow characteristics.

2. How Does the Calculator Work?

The calculator uses the orifice size equation:

Where:

• \( BTU_{req} \) — Generator's BTU requirement per hour
• \( Energy\ Content \) — Energy content of propane (typically 2500 BTU/ft³)
• \( Flow\ Factor \) — Empirical factor accounting for flow characteristics (typically 0.016)

Explanation: The equation calculates the orifice size needed to deliver the proper fuel flow rate for the generator's BTU requirements.

3. Importance of Proper Orifice Sizing

Details: Correct orifice sizing ensures optimal generator performance, prevents fuel starvation or flooding, and maintains proper air-fuel ratio for clean combustion.

4. Using the Calculator

Tips: Enter the generator's BTU requirement, propane energy content (default 2500 BTU/ft³), and flow factor (default 0.016). All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What's the typical energy content of propane?
A: Propane typically contains about 2500 BTU/ft³, but this can vary slightly depending on composition and conditions.

Q2: How do I find my generator's BTU requirement?
A: Check the generator's specifications or nameplate, or consult the manufacturer's documentation.

Q3: What affects the flow factor?
A: The flow factor accounts for pressure differential, viscosity, and other flow characteristics specific to your system.

Q4: Are there standard orifice sizes?
A: Yes, orifice sizes are typically standardized in small increments (e.g., 0.001 inch steps) and may need to be matched to available drill sizes.

Q5: Should I consult a professional for installation?
A: Yes, propane system modifications should always be performed by qualified technicians to ensure safety and proper operation.