1. What is the PSI to CFH Calculation?

The PSI to CFH calculation converts pressure (in pounds per square inch) to cubic feet per hour flow rate for gas systems using a specific adjustment factor. This is commonly used in gas flow engineering and system design.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( PSI \) — Pressure in pounds per square inch
• \( Factor \) — Adjustment factor specific to the system

Explanation: The square root relationship accounts for the non-linear relationship between pressure and flow rate in gas systems, while the factor adjusts for specific system characteristics.

3. Importance of CFH Calculation

Details: Accurate CFH calculation is essential for proper gas system design, ensuring adequate flow rates for appliances, and maintaining system safety and efficiency.

4. Using the Calculator

Tips: Enter PSI value (must be ≥0) and the appropriate adjustment factor for your system. The factor is typically provided by equipment specifications or engineering guidelines.

5. Frequently Asked Questions (FAQ)

Q1: What does CFH stand for?
A: CFH stands for Cubic Feet per Hour, a unit of volumetric flow rate for gases.

Q2: How is the adjustment factor determined?
A: The factor is typically derived from specific system characteristics, pipe sizing, gas properties, and may be provided in equipment manuals or engineering standards.

Q3: Can this formula be used for all gases?
A: While the basic relationship holds, different gases may require additional adjustments for density and other properties beyond the simple factor.

Q4: What are typical PSI ranges for this calculation?
A: This calculation is commonly used for low to medium pressure gas systems, typically ranging from 0.5 PSI to 60 PSI, depending on the application.

Q5: Is this calculation accurate for high-pressure systems?
A: For high-pressure systems or critical applications, more complex formulas accounting for compressibility and other factors may be required for precise calculations.