Calculator
Shed size to fans and pads
Airflow needed: –
Exhaust fans: –
Cooling pad area: –
Estimate for tunnel ventilation. Shed sealing, bird type and age, and local climate change the design; we confirm it from your drawing.
The method
How the numbers are worked out
Airflow = shed width × average height × air speed × 3,600 (m³/h). Fans = airflow ÷ airflow per fan, rounded up. Pad area = total fan airflow (m³/s) ÷ pad face velocity.
A target of about 2.5 m/s is common for broilers in hot weather; layers and breeders are often run lower. Ask us for a design for your flock.
FAQ
Common questions
How many exhaust fans does a poultry shed need?
Shed width × average height × target air speed × 3,600 gives the airflow in m³/h; divide by 44,000 for 54 inch fans and round up.
How much cooling pad does a poultry shed need?
Divide the total fan airflow in m³/s by the pad face velocity: about 1.8 m/s for 150 mm pads or 1.25 m/s for 100 mm pads.
Need help choosing?
Tell us the space and what you need to cool. Our sales team will suggest the right models and send a quotation.