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Volume Flow Equation:
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Air flow volume represents the quantity of air moving through a given cross-sectional area per unit time. It is a critical parameter in HVAC systems, ventilation design, and industrial processes involving air movement.
The calculator uses the fundamental volume flow equation:
Where:
Explanation: The equation calculates the volume of air passing through a given area by multiplying the cross-sectional area by the air velocity perpendicular to that area.
Details: Accurate air flow volume calculation is essential for proper ventilation system design, HVAC sizing, industrial process control, and ensuring adequate air quality in enclosed spaces.
Tips: Enter the cross-sectional area in square meters, air velocity in meters per second, and select your preferred output unit (m³/s or CFM). All values must be positive numbers.
Q1: What is the difference between m³/s and CFM?
A: m³/s (cubic meters per second) is the SI unit for volume flow, while CFM (cubic feet per minute) is the imperial unit. 1 m³/s = 2118.88 CFM.
Q2: How do I measure air velocity accurately?
A: Use an anemometer at multiple points across the duct or opening and calculate the average velocity for most accurate results.
Q3: What is a typical air flow rate for residential ventilation?
A: Typical residential ventilation rates range from 0.35 to 0.5 air changes per hour, translating to approximately 0.05-0.1 m³/s for an average room.
Q4: Does air density affect volume flow calculations?
A: This calculator assumes standard air density. For precise calculations at different temperatures or altitudes, density corrections may be necessary.
Q5: When is this calculation most applicable?
A: This calculation is ideal for steady, uniform air flow through ducts, pipes, and openings where velocity distribution is relatively constant.