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technissis.gr > Products > Leister > Process Heat > Processes > Drying
Drying with hot air
Versatile and efficient

Hot air automatically springs to mind whenever we think about drying. The hot-air blowers, air heaters, and blowers from Leister are ideal for this. They are used for all kinds of drying applications. You can vary the air distribution and the flow rate depending on the desired drying results. This involves adapting parameters such as the temperature and air volume and using different nozzles.

When hot air is used for drying, two physical effects interact with one another. Together, these further increase the efficiency of the drying process: Firstly, hot air can hold considerably more moisture than cold air. Secondly, the continuous current of air that passes over the wet surface increases the level of evaporation, particularly if fresh, dry air is always used. To make the drying process even more efficient, hot air is often used to blow off any drops of moisture that are resting lightly on the surface before the main drying process starts. Once again, Leister can offer a solution. This consists of a blow-off nozzle that was specially developed for this purpose plus the powerful AIRPACK blower.

Some examples of drying applications:

  • Paper manufacture
  • Textile production
  • Manufacturing of nonwovens
  • Metal, plastic, or glass components
  • Packaging after cleaning
  • Packaging before filling
  • Bottles after filling
When "drying" is understood in its wider sense, you also have the processes of roasting and dehydrating on top of the numerous example applications listed above. For instance, Leister air heaters and blowers are used for roasting coffee.

Leister has the solution
Whatever you want to dry – Leister has the solution. Moisture can be blown away using the blow-off nozzles together with the AIRPACK high-pressure blower. For the purpose of drying wide paper webs, several LHS air heaters with wide slot nozzles can be combined and supplied with air by powerful Leister blowers.

More application:

  • Roasting
  • Blowing off

LHS Air heater
LHS 15 CLASSIC
Smallest of the LHS Series. Detection of heating element and device overheating with alarm output.
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LHS 15 PREMIUM
Smallest of the LHS Series. Heating power steplessly adjustable with potentiometer.
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LHS 15 SYSTEM
Smallest of the LHS Series. Remote control interface for Leister CSS or SPS temperature controller.
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LHS 21S CLASSIC
Only 67 mm wide. Detection of heating element and device overheating with alarm output.
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LHS 21S PREMIUM
Only 67 mm wide. Heating power steplessly adjustable with potentiometer.
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LHS 21S SYSTEM
Only 67 mm wide. Remote control interface for Leister CSS or SPS temperature controller.
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LHS 21L CLASSIC
Only 67 mm wide. Detection of heating element and device overheating with alarm output.
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LHS 21L PREMIUM
Only 67 mm wide. Heating power steplessly adjustable with potentiometer.
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LHS 21L SYSTEM
Only 67 mm wide. Remote control interface for Leister CSS or SPS temperature controller.
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LHS 41S CLASSIC
Wide array of applications. Detection of heating element and device overheating with alarm output.
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LHS 41S PREMIUM
Wide array of applications. Heating power steplessly adjustable with potentiometer.
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LHS 41S SYSTEM
Wide array of applications. Remote control interface for Leister CSS or SPS temperature controller
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LHS 41L CLASSIC
Wide array of applications. Detection of heating element and device overheating with alarm output.
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LHS 41L PREMIUM
Wide array of applications. Heating power steplessly adjustable with potentiometer.
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LHS 41L SYSTEM
Wide array of applications. Remote control interface for Leister CSS or SPS temperature controller
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LHS 61S CLASSIC
High performance. Detection of heating element and device overheating with alarm output..
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LHS 61S PREMIUM
High performance steplessly adjustable with potentiometer.
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LHS 61S SYSTEM
High performance. Remote control interface for Leister CSS or SPS temperature controller.
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LHS 61L CLASSIC
High performance. Detection of heating element and device overheating with alarm output.
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LHS 61L PREMIUM
High performance steplessly adjustable with potentiometer.
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LHS 61L SYSTEM
High performance. Remote control interface for Leister CSS or SPS temperature controller.
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LHS 91 BASIC
Our most powerful device, with up to 40 kW.
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LHS 91 SYSTEM
40 kW device. Remote control interface for Leister CSS or SPS temperature controller.
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LE Air heater
LE MINI
Smallest air heater. Suitable for where heat application is concentrated to a point.
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LE MINI SENSOR
Smallest air heater with integrated temperature probe. For heat application concentrated to a point.
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LE MINI SENSOR KIT
Smallest air heater with integrated temperature probe and pressure reducing valve. For heat application concentrated to a point.
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LE 5000 DF
Energy savings effect thanks to hot air recirculation. Maximum air inlet temperature 160°C.
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LE 5000 DF-R
Energy savings effect thanks to hot air recirculation. Maximum air inlet temperature 350 °C.
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LE 5000 HT (up to 900 °C)
High temperature air heater up to 900°C. Minimal air volume 600 Nl/min.
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LE 10000 DF
Energy savings effect thanks to hot air recirculation. Maximum air inlet temperature 160°C.
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LE 10000 DF HT (up to 900 °C)
Energy savings effect thanks to hot air recirculation. Maximum air inlet temperature 160 °C.
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LE 10000 DF-R
Energy savings effect thanks to hot air recirculation. Maximum air inlet temperature 350 °C.
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LE 10000 DF-R HT (up to 900 °C)
Energy savings effect thanks to hot air recirculation. Maximum air inlet temperature 350 °C.
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LE 10000 HT (up to 900 °C)
High temperature air heater up to 900°C. Minimal air volume 800 Nl/min.
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Hot-air blower
MISTRAL 2 PREMIUM
Integrated heating element and tool protection, code switch for potentiometer (internal/external).
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MISTRAL 4 PREMIUM
Carbon changer, integrated heating element and tool protection, code switch for potentiometer.
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MISTRAL 6 PREMIUM
Brushless, maintenance-free blower motor. Eminently suitable for continuous operation.
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MISTRAL 6 SYSTEM
Integrated control or external system interface. Brushless, maintenance-free blower motor.
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HOTWIND PREMIUM
Air volume steplessly adjustable with potentiometer up to 900 l/min.
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HOTWIND SYSTEM
Interface with alarm contact and potentiometers for stepless control of heater and blowers.
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VULCAN SYSTEM
The powerhouse of the hot-air blowers. Its performance speaks for itself.
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Blower
SILENCE
Very quiet operation with 61 dB(A). Large air volumes and can be installed in all positions.
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ASO
Conveys 15,900 l/min of air at 60 Hz. Can be used simultaneously for several air heaters with suitable accessories.
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ROBUST
Can be installed in all positions. Indestructible under extreme operating conditions and in continuous operation.
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AIRPACK
Provides large air volumes at high pressure.
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MONO 6 SYSTEM
Impresses with small dimensions and large air volume of up to 600 l/min.
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Control components
FC 2200
Improves hot air processes. Air volume and heating capacity can be adjusted independently of one another.
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FC 550
Improves hot air processes. Air volume and heating capacity can be adjusted independently of one another.
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CSS EASY
Suitable for LHS SYSTEM air heaters.
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CSS
Temperature controller for universal use. For LHS SYSTEM and LE MINI SENSOR air heaters.
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KSR DIGITAL
Suitable for LE 5000 /10,000 HT, LE 5000 / 10,000 DF, LE 5000 / 10,000 DF-R air heaters.
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Three-phase adjustment unit DSE
Three-phase controller. External stepless adjustment of non-electronic air heaters.
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