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Direct Air Heaters

Direct Air Heaters

Direct air heaters

Direct air heaters are used for firing of oil or gas fuels. They heat up the drying air of STELA dryers and are also used for other industrial processes, e.g. in the brick making industry.

Hot air generation with direct air heater

The direct air heater consists of an outer casing, an intermediate casing against radiation losses and a perforated combustion chamber made of highly heat-resistant steel, which is arranged centrically in the casing. The hot combustion gases are mixed with the fresh air heated up at the wall of the combustion chamber and a hot air of homogeneous temperature is produced. The energy of combustion is thus fed directly into the dryer.

The firing efficiency is 100 %.

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Agricultural Dryer
- Stationary Dryer
- Mobile Circulating Batch Dryer MUF
- Mobile Continuous Mixed Flow Dryer Universal

Belt Dryer
- for Sawdust, Pellets, Wood Chips and other Biomasses
- for Digestates
- for Sewage Sludge
- for Breakfast Cereals
- for Pet Food
- for Other Products

Dryer for Waste Heat Recovery for Biogas Plants

Drum Dryer

Feed and Turn Dryer

Air Heater
- Indirect Air Heaters
- Direct Air Heaters

Electrical Engineering / Moisture Content Measuring

- Stationary Agricultural Dryers
- Mobile Agricultural Dryers
- Belt Dryers
- Belt Dryers for Sewage Sludge
- Belt Dryers for Extrudates
- Feed-and-Turn Dryers

STELA History

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