How it works
The fan and pad system
Exhaust fans on one wall draw outside air through wet cellulose cooling pads on the opposite wall. The air cools as the water evaporates and picks up moisture, which most crops like in hot, dry weather.
A fan and pad system lowers temperature, raises humidity and keeps air moving over the crop, which reduces heat stress, wilting and flower drop.
The system
What we supply
Cellulose cooling pads
7090 and 5090 grades, 100 or 150 mm, cut to size. Above 80% cooling efficiency, anti-bacterial formula available.
Pad framing and water system
PVC or aluminium frames with top water pipe, gutter, tank, pump and filter.
Exhaust fans
32, 40 and 54 inch drop hammer fans, made in India, in belt or direct drive.
Sizing
Sizing fans and pads
Fans are usually sized to change the air in the greenhouse about once a minute in summer: floor area × average height gives the volume, and that volume per minute, converted to m³/h, is the fan airflow needed. Pad area follows from the fan airflow and the pad face velocity. The fan and pad calculator works for greenhouses as well; we check it against your structure.
Recommended products
Products for greenhouses
Evaporative Cellulose Cooling Pads
5 / 6 / 7 mm flutes · custom sizes
PVC & Aluminium Pad Framing
100 mm and 150 mm
Cooling Pad Production Line
Complete pad-making machinery
Direct Drop Hammer Exhaust Fan 800 mm
XD80 · 0.37 kW · 18,000 m³/h
Direct Drop Hammer Exhaust Fan 1000 mm
XD100 · 0.55 kW · 23,000 m³/h
Direct Drop Hammer Exhaust Fan 1380 mm
XD138 · 1.1 kW · 44,000 m³/h
Drop Hammer Exhaust Fan 800 mm
XH80 · pulley driven · 18,000 m³/h
Drop Hammer Exhaust Fan 1000 mm
XH100 · pulley driven · 23,000 m³/h
Drop Hammer Exhaust Fan 1380 mm
XH138 · pulley driven · 44,000 m³/hProjects
See our installations
We have installed industrial coolers, ducting, HVLS fans and exhaust fans for factories, warehouses and farms across India. See our projects, or ask us for a reference site near you.
FAQ
Common questions
What is a fan and pad cooling system?
Exhaust fans on one wall pull air through wet cellulose cooling pads on the other, cooling and humidifying the air before it crosses the crop.
Which cooling pad is best for a greenhouse?
Cellulose pads in 100 or 150 mm. We make both 7090 and 5090 grades and advise which suits your fans and crop.
How long do cooling pads last?
With clean water, a filter and regular cleaning, pads last several seasons; hard or dirty water shortens their life.
Do you supply pad framing?
Yes, in PVC or aluminium, with the full water system.
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.