Environmental Systems/Environmental Simulation

Witt & Sohn AG provides over 75 years one of the most comprehensive industrial fan programs for environmental systems.These include high-performance centrifugal fans for air pollution control with filter, dedusting and process gas cleaning systems.


For gas conditioning by means of fresh or cool air in hot gas processes (e. g. for flue gas cleaning systems for furnace, smelting and combustion processes in cement and steel plants and foundries) highly efficient axial fans are available.They are used e.g. in air and gas coolers or heat exchangers as well as for fresh air quenching.


Furthermore we has developed an extensive range of high performance axial fans (drive power up to 2 MW) for environmental simulation in test facilities, atmosphere and altitude chambers, for the airstream simulation in the automotive sector as well as for other ventilation simulations.

Some individual industries

Air pollution control, dust collection and process air cleaning in the following industries:


  • Waste recycling/waste treatment
  • Agrochemicals
  • Building materials and cement industry
  • Mining
  • Breweries
  • Chemical industry
  • Printing Industry
  • Fertilizer plants
  • Electrical industry
  • Gypsum Industry
  • Glass and ceramics industries
  • Wood and paper industry
  • Chalk industry
  • Sewage treatment plants
  • Plastics production and processing
  • Agriculture
  • Mechanical Engineering
  • Metal and minerals processing
  • Food and animal feed industry
  • Petrochemical plants / refinery
  • Pharmaceutical industry
  • Iron and steel industry / foundries
  • Synthetic fiber production
  • Tobacco industry
  • Technical building equipment
  • Textile industry
  • Drying plants
  • Sugar industry

Environmental simulation, temperature and climate testing systems

Automotive Testing, passable test chambers, altitude simulation chambers

Chassis dynamometer test benches, emission test systems

Wind Tunnels


Total: More than 22,000 installations in numerous industries worldwide

Products for Environmental Systems/Environmental Simulation

  • High performance centrifugal fans
  • High performance axial fans
  • Explosion-Proof centrifugal and axial fans, ATEX compliant
  • Special-fan designs, customized developments / solutions
  • Accessories: Vibration decoupling, butterfly and shut-off dampers, guide vanes, filters, heat exchangers, heat tracing etc.
  • Noise protection equipment: absorption silencer, housing insulation, sound insulating cabinets and enclosures
  • Thermal protection: housing insulation, auxiliary cooling fan
  • Electrical components: drive and auxiliary motors, actuating and variable speed drives, soft starters, frequency converters
  • Sensors: temperature, vibration, bearing condition, speed etc.
  • Inlet vanes