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Crop Drying.

Grain Floor Drying.
Hot water is piped to a heat-exchanger built into the side of the fan house. The existing fan draws air through the heat exchanger and dries the crop without using fossil fuel.

Outputs of over 300 kwatts can be achieved and operation through the night is possible with our automatic loader.

The Dragon can be used in tandem with your existing drier, supplying the bulk of the energy and your existing expensive system used as back up. Whichever type of drier you have, we need to know the temperature lift required and the output of the drier fan.

Tractor driven mobile units can present special access problems, and normally need a visit to design the airduct.

Onions.
A 100 hundred tonne batch of onions requires a 10,000 CFM fan and 600 kilowatts of energy to raise the temperature of the curing/drying air to 23 Deg C.

Hops.
A hop drying floor of 7 metres x 7 metres requires a fan of 20,000 CFM of air and an energy source of 1200 kilowatts to raise the temperature by 53 Deg C. A Dragon heater could save up to 300 litres of oil per hour during the hop drying process.

Barn Dried Hay
40 big bales will need 40,000 CFM of air and 132 kilowatts to increase the temperature of the drying air by 5 Deg C.

Site the Dragon heater adjacent to the dryer fan to minimise the insulated ductwork. The ductwork has 100mm air inlets to ensure the fan is not starved of air.

Crop Drying -- Rules of Thumb
Fan output(CFM)Heat Kw.Temp lift Deg C.
Grain - Floor drying 100 tonnes10,000295 Deg C.
Onions/Bulbs 100 Tonnes10,00013123 Deg C.
Hops 7m x 7m floor area20,00058653
Hay 40 big bales40,00013112