1. What is CFM and m³/h?

CFM (Cubic Feet Per Minute) and m³/h (Cubic Meter Per Hour) are both units used to measure volumetric flow rate. CFM is commonly used in the imperial system, while m³/h is used in the metric system.

2. How Does the Conversion Work?

The conversion formula is:

Where:

• \( m³/h \) — Flow rate in cubic meters per hour
• \( 1.699 \) — Conversion factor (1 m³/h ≈ 0.5886 CFM)

Explanation: This conversion factor accounts for the difference between cubic meters and cubic feet, as well as the difference between hours and minutes.

3. Importance of Flow Rate Conversion

Details: Accurate flow rate conversion is crucial for HVAC system design, industrial ventilation, and air handling applications where equipment specifications may use different measurement systems.

4. Using the Calculator

Tips: Enter the flow rate in cubic meters per hour (m³/h). The value must be greater than zero. The calculator will automatically convert it to cubic feet per minute (CFM).

5. Frequently Asked Questions (FAQ)

Q1: Why is the conversion factor 1.699?
A: This factor accounts for both the volume conversion (1 m³ = 35.3147 ft³) and the time conversion (1 hour = 60 minutes).

Q2: What are typical values for air flow rates?
A: Residential HVAC systems typically range from 400-2000 CFM, while industrial systems can exceed 10,000 CFM.

Q3: When would I need to convert between these units?
A: When working with international equipment specifications, comparing systems from different regions, or when local codes require specific units.

Q4: Is this conversion exact?
A: The conversion is accurate for most practical purposes, though extremely precise applications might require more decimal places.

Q5: Can I convert CFM back to m³/h?
A: Yes, the reverse conversion is: m³/h = CFM × 1.699