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The VDGS/TKA series compact units were developed specifically for use in spraying and drying chambers as well as in drying plants for treating cereal, tobacco and wood.

The equipment consists of three units:
-Module T: Heat exchanger component
-Module K: component for feeding fresh air and circulating air with a built-in filter
-Module A: component for outgoing air and change-over damper

The change-over damper in module A offers a choice of circulating air or fresh air operation. The exhaust ventilator is turned off during circulating air operation.
The amount of outgoing air utilised during the drying phase can be manually adjusted using a bypass valve.


Modulated heat and air output
Corresponding modules
Long service life
Low energy consumption
high fuel engineering efficiency
Easy assembly
Easy maintenance
Adjusts operating point by changing nozzle width
Low noise level

Operating Point Setting
Process air units from AL-KO with free-running rotating ventilator wheels stand out by the motor-ventilator unit axial adjustability, which facilitates a precise operating point setting. This means that both motor and ventilator work efficiently keeping energy consumption low. The easy to use mechanism makes it easy to make fine adjustments once on-site.

Size (kW) 0 I II III IV
Heat output in m³/h 128 186 267 407 523
Air throughput * in Pa 14.000 19.000 27.000 40.000 52.000
delta p ext. (max) 650 600 425 750 300

*based on T2=20 °C

Easy Maintenance
It is easy to access the various ventilator components, filters can be removed and cleaning shafts of the heat exchanger are easily accessed by way of a separate cover. Our units can thus be easily and cost-effectively maintained.

Enamelling
The change-over damper is set to "Enamelling"
Fresh air and exhaust ventilators are in constant operation
Burner turns itself off depending on the fresh air temperature

Drying
The change-over damper is set to "Drying"
Exhaust ventilator is not in use
Fresh air ventilator operates as circulating air ventilator
The burner provides heat based on the circulating air temperature





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Heat Technology
Process technology

Insert heat exchangers
Compact units

Warming and drying chambers
Circulating air heaters
Fresh air units
Dryer components