Sunday, February 7, 2016

🌟pharma discussion 🌟
❓What is the formula for calculating number of air changes in an area?
🅰. Number of air changes/hour in an area is
= Total Room Airflow In CFM x 60
Total Volume of room in cubic feet
For calculating Total Room Airflow in CFM, first calculate air flow of individual filter. Formula is given below.
Air flow (in cfm) = Avg.air velocity in feet/Minute x Effective area of filter
Then find Total air flow. Formula is
Total Air flow = Sum of air flow of individual filter.
Air flow Velocity can be measured with the help of Anemometer

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