1. Grainair International
Bringing the Australian solution to the world

2. Grainair International
Australian Bunkers

3. • Fully Aerated Bunkers Starting from 500 tons to 100,000
tons
The Australian Solution

4. •Steel walls made to last
•Designed with the inherent ability to control insects
•Aeration ready
•Complete with Tarpaulin locks
•Modular design
Bunker wall - solid steel construction

5. Pre Cast Modular Concrete Wall 4m long X 1 meter high complete
with “gas tight” tarpaulin locks

6. Gas Tight Bunker Locks

7. • All our Bunkers are Aeration ready
Polycarbonate Aeration duct

8. Grainair Poly Air Ducts

9. •All our fittings are Poly carbonate
•Bell and spigot design
•Each section simply slides together
•Aeration duct from 600 millimetre to 300 millimetres depending
on application
Grainair Fittings

10. Aeration Fans
• Grainair Fans are designed to produce a large amount of air at
high pressures
• Grainair fans are designed tough - so tough in fact that we offer
a 5 year warranty

11. Diesel Powered Fans
• We offer diesel powered fans for use where
electricity is unavailable

12. Aeration Control
• The ability to control the fans automatically is an important
function of our aeration system
• Grainair control systems are designed to continually look
for cooler air
• Working through a series of step downs we are able to cool
the grain mass in a few short weeks and maintain an
inherent ability to control the fans in a wide variant
of weather conditions
• Grainair systems have a built in “Set and forget” function

13. Grainair Transitions
Fan and transition drawings

14. Bunker Filling Systems
• Grainair provides bunker filling systems as
required, customised to suit your storage
facility and individual needs

15. Side Bunker Loader

16. Typical BRANDT Bunker Loader at 330 Tons Per Hour

17. Cross Sweep Bunker Unloader

18. Brandt and Farm King Grain Belts and Augers

19. Thermocouple Data
• This graph represents 3 thermocouple strings placed in a 10,000 ton bunker of Canola
• Note the storage temperatures on the 8/12/2011 at 32 degrees C
• General cooling is achieved in less than 5 weeks with storage temperatures at between 16 and 20 degrees Celsius
• The average daytime ambient temperature at this time of the year in this location is 40 degrees C

20. Aeration Design A

21. Aeration Design B

22. Aeration Design C

23. Aeration Design D

24. Grainair Fans
• Fan cases are constructed from 5 millimetre Plate which is fully welded
• Impellers are made from a minimum standard of 14 millimetre thickness
• Designed particularly for Grain and rural industry application with a full 5 year warranty on both fan
and case
• Fans arrive on site ready to be installed and go to work
• Designed to pick up air quickly, applying air to the grain mass at up to 4 complete air changes an
hour
• Developing 20,000 litres of air a second at high pressures
• Grain temperatures are dropped within a very short time without effecting grain weights

25. Contact Us
 Wayne Paddison – Chief Executive Officer
 Email: wayne@grainair.com.au
 LinkedIn: https://au.linkedin.com/in/waynepaddison
 Telephone: +61459 436 758