Research and Development at EVG

Development is a top priority at EVG. For more than 40 years, our top goal has been to develop energy-efficient fans of all sizes for a wide variety of applications. Special solutions are a challenge that we gladly accept on a daily basis. Thanks to a highly diversified team ranging from employees with decades of experience to students, we are able to combine our best practices in new research and development projects with today's simulation possibilities.

Almost every department receives important impulses from new and further developments in order to offer optimum technical and commercial products also in the future. to students, we are able to combine our best practices in new research and development projects with today's simulation possibilities. Almost every department receives important impulses from new and further developments in order to offer optimum technical and commercial products also in the future.

Design and optimization of the system and equipment ventilation

  • Tunnel fans
  • Drying Systems
  • For high temperature ranges up to 950 ° C
  • For Acidic fluids
  • With coordinated accessories

Simulation and calculation of fluid mechanics

  • Computational Fluid Dynamics (CFD)

    We perform CFD simulations in order to determine pressure losses and to illustrate complex flow models. This makes it possible to optimise our impellers, housings, nozzles, back blades, inlet boxes and other components and assemblies and increase their efficiency.

  • Finite Elemente Methode (FEM)

    We use FEM simulations to determine and optimise the maximum bearing load of static components, such as trestles, housings or inlet boxes. In addition, the limit speeds of our impellers can be determined and their stability optimised.

  • Modal analysis

    We are able to characterise the dynamic behaviour of components or assemblies using modal analysis. We use the determined resonant frequency to determine vibration-critical components as well as safety reserves.

Design and component optimisation

When designing the fans, we place value on optimising every component, thus providing a permanent guarantee of production safety.

  • M2M – Remote Monitoring
    Monitoring of
    •  Temperature
    •  Vibrations/Oscillations
    •  Bearings/Motors
    •  Speed and system status (on/off)
    •  Location
    • Convenient monitoring by web access
    • Alarm if measurement values are exceeded
    • No contact to the customer's IT
  • Explosion-protected fans – equipment group II
    Safety is guaranteed with:
    • normal operating conditions → Zone 2 / 22
    • foreseeable faults → Zone 1 / 21
    • rare faults → Zone 0

    Explosion-protected fans are executed and certified in accordance with Directive 94/9/EC and in the future 2014/34/EU.

  • Swing-out impeller
    • Where space is limited
    • If no tools for expansion are available
    • With long cleaning intervals
  • Test benches

    Our test bench is executed according to directive DIN EN ISO 5801, formerly DIN 24163-2.

Materials and coatings

  • Material use
    • Normal steel/stainless steel
    • Non-ferrous heavy metals (nickel alloys)
    • Non-ferrous light metals (e.g. aluminium, titanium)
    • Carbon fibre reinforced plastic (CFK)
    • Fine grain structural steel
    • Heat treatable steel
    • Austenitic materials
    • Compound steels
    Cooperation with testing institutes
    • Vohtec Labor GmbH (crack detection, material testing)
    • Schweißtechnische Lehr und Versuchsanstalt SLV Fellbach
    • TÜV-Süd/Dekra
  • Sonderlackierung

    Anti-corrosion and non-stick coatings, e.g. E-CTFE (Halar) up to 150 °C and PFA Proco Ruby Red up to 260 °C

    Additional coatings upon customer request.

  • Wear protection (anti-abrasion coatings)

    Wear plates up to 15 mm (application of a chrome carbide alloy with up to 65 HRC)

    Flame spraying technology approx. 0.5 mm (e.g. tungsten carbide with hardness > 800 HV)

  • Coating of separate sheets
    • Possible with different types of coatings (wear plates or flame spraying technology)
    • Renewable by replacing the sheets
    • Option to retrofit existing impellers

special fans

  • Titanium Radial fans

    As titan has an excellent corrosion resistance, these fans are very suitable for the operation with salt acid. For example: Type RVH5 RU 500 K in a salt acid reclaiming plant.

    Power range:
    • medium: i.e. chlorine hydrogen
    • volume flow: > 50.000 m3/h
    • pressure difference: > 200 mbar
    • peripheral speed.: > 250 m/s
    • drive power: > 400 kW
    • impeller: 3.7035/3.7235 titan Gr.2/7
    • Housing: rubberized
    • lining with abrasion spirale made from titan
    • shaft seal coal labyrinth with sealing gas connection made from titan
    • water injection on the impeller
    • vibration monitoring
    • temperature monitoring  
  • The new ECO Line

    We developed a cost optimized and powerful fan with the help of intensive standardization and reduction of the configuration. By this standardization we can storage the assembly components, what enabled us to achieve a shorter delivery time. 

    • impellent
    • direct drive with conventional motor
    • connection
    • direct at the plumbing
    • free suction at the injection nozzle
    • housing
    • fluidic optimized
    • impeller motor side developable
    • available in three angularities
    • impeller
    • high efficiency
    • low-noise  
  • Built-in fan special model for 950°C

    Built-in fan special model for 950°C  

    The use of thermic high resilient materials in connection with a special modal construction enables our built-in fans to be used until 950°C.  

    Example: Typ ERVH2/RU 630 R  

    Power range: 
    • impeller diameter: 864 mm
    • operation volume flow: 25000 Bm³/h
    • inlet temperature: 950 °C
    • static pressure rise: 300 Pa
    • rotation speed: 1.700 1/min
    • motor: 30 kW   
  • Axial-hot gas applications 900°-950°C

    Example: built-in axial fan Typ EAVN45-54-1400-R  

    Power range:
    • impeller diameter: 1.270 mm
    • operation volume flow: 120.000 Bm³/h
    • inlet temperature: 950 °C
    • static pressure rise: 150 Pa
    • rotation speed: 970 1/min
    • motor: 11 kW
  • Airstream blower

    Our fans can also be used for airstream simulation in the automobile industry.

    • radial fan bilateral suction if high speed is required
    • axial fans standard configuration
    • portable or  fixed
    • adjustable in height
    • fitting position depending on the available place

    Example: Typ AVHN 2500 K as truck-airstream blower

    Power range:
    • medium: air
    • volume flow: > 550.000 m3/h
    • pressure difference di: > 25 mbar
    • rotation speed: > 800 1/min
    • drive power: 560 kW
    • hollow profile shovels adjustable during the fan is not running
    • temporary storage with coupling
    • vibration monitoring
    • motor with frequency regulation
  • Axial fans with shovels that are adjustable during usage, for operation in Tunnels.

    Developed by our technical high accomplished engineers, our fan with hollow profile shovels adjustable during usage offers the optimal solution for inlet and outlet air in tunnels.  

    Technical data:
    • impeller diameter: 1.600 mm
    • volume flow: 180.000 m³/h
    • static pressure rise: 2.800 Pa
    • rotation drive: 1.500 1/min
    • motor: 220 kW
    • max. temperature: 400°C (2 h)
    • DIN EN 12101-3 F400-120
    • during usage electro-mechanical adjustable
    • completely reversible

We will be glad to assist you:

+49 7042 8750-0
Fax: +49 7042 8750-27

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