CUSTOMFAN Concept

From the very beginning to the finished customized product

Eflow_customfan-concept
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Calculation (FEA)

For each design, we check the tensions and deformations by performing a finite element analysis (FEA). We check if the tensions and deformations are not greater than the maximum permissible values and ensure the safety of all the joints, i.e. both the screws and the welds. We apply a safety factor in all our designs.

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3D design fan

In our technical office, we design a fan by considering the selected impeller and design criteria such as geometry, type of motor, temperature, noise, final placement, etc.

We determine, the complete geometry of the 3D Fan including the thickness and dimensions of each component. Apart from the structural dimension, it is also important to make a design that omits possible sources of noise and vibration.

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Selection of the impeller and documentation

The first step in the process of designing your custom fan is to select the best impeller for your use.

With Multi-Wing impellers, probably the world’s widest range of impellers, you are ensured the best possible solution for your equipment.

In the selection process we use OPTIMISER, the Multi-Wing software program. With this program we can create over 200.000 configurations of axial fans that range from 200 mm to 2750 mm in diameter. We obtain a 3D blueprint of the selected impeller with another Multi-Wing program DESIGNER.

For each project we select several impeller alternatives to test later and thus ensure the best final solution.

With a customized selection for each project we achieve a better and differentiated solution compared to the catalog fans available on the market. In other words, we select an impeller according to performance needs, and other design criteria such as temperature, noise, etc.

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Test in wind tunnel

In the Group we have 3 wind tunnels, where one of them is in Spain built according to AMCA 210-85.
For each project, we test the characteristic curve of your fan and its corresponding power consumption curve.

To optimize the test we consider:
• Various angles of the impeller blade
• Different axial positions of the impeller
• Different impeller alternatives

With this procedure, we achieve the best solution for your purpose concerning the flow rate, energy consumption and noise level. Overall, we make sure that the fan behaves as planned.

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Fluid analysis (CFD)

We can conduct dynamic fluid studies (CFD) to confirm whether the fan functions as desired. In this matter, we take into account your specific application requirements.
In the CFD calculations, we can include the resistance of your system as heat exchangers and making sure that there are no dead zones of airflow.

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Vibration analysis

Since a fan has a rotating component it is crucial to control the vibrations caused by resonance and other factors. Furthermore, we must control the vibration of the fan in the applied position at various points.

The ISO 14694 standard indicates a maximum overall value of 4,5 mm/s. If the measured value exceeds this value the cause must be determined and the design must be changed. Our equipment enables us to see the entire spectrum of vibration frequencies and allows us to determine the causes.

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Start – Stop Cycles

We test our fan design against fatigue by performing START/STOP tests.

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Measurement of noise

By applying the Multi-Wing Software program Optimiser, we obtain the impeller noise level at the selected work point.

Through a careful design of the assembled fan, we avoid noise coming from pure tones or coupling of natural frequencies. Thus, we verify the acoustic design specifications when carrying out the first prototype.

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Measurement of flow in the field

Using an anemometer or hot wire we can make the operation in situ according to the flow design parameters.

Eflow_customfan-concept
\
×

Calculation (FEA)

For each design, we check the tensions and deformations by performing a finite element analysis (FEA). We check if the tensions and deformations are not greater than the maximum permissible values and ensure the safety of all the joints, i.e. both the screws and the welds. We apply a safety factor in all our designs.

\
×

3D design fan

In our technical office, we design a fan by considering the selected impeller and design criteria such as geometry, type of motor, temperature, noise, final placement, etc.

We determine, the complete geometry of the 3D Fan including the thickness and dimensions of each component. Apart from the structural dimension, it is also important to make a design that omits possible sources of noise and vibration.

\
×

Selection of the impeller and documentation

The first step in the process of designing your custom fan is to select the best impeller for your use.

With Multi-Wing impellers, probably the world’s widest range of impellers, you are ensured the best possible solution for your equipment.

In the selection process we use OPTIMISER, the Multi-Wing software program. With this program we can create over 200.000 configurations of axial fans that range from 200 mm to 2750 mm in diameter. We obtain a 3D blueprint of the selected impeller with another Multi-Wing program DESIGNER.

For each project we select several impeller alternatives to test later and thus ensure the best final solution.

With a customized selection for each project we achieve a better and differentiated solution compared to the catalog fans available on the market. In other words, we select an impeller according to performance needs, and other design criteria such as temperature, noise, etc.

\
×

Test in wind tunnel

In the Group we have 3 wind tunnels, where one of them is in Spain built according to AMCA 210-85.
For each project, we test the characteristic curve of your fan and its corresponding power consumption curve.

To optimize the test we consider:
• Various angles of the impeller blade
• Different axial positions of the impeller
• Different impeller alternatives

With this procedure, we achieve the best solution for your purpose concerning the flow rate, energy consumption and noise level. Overall, we make sure that the fan behaves as planned.

\
×

Fluid analysis (CFD)

We can conduct dynamic fluid studies (CFD) to confirm whether the fan functions as desired. In this matter, we take into account your specific application requirements.
In the CFD calculations, we can include the resistance of your system as heat exchangers and making sure that there are no dead zones of airflow.

\
×

Vibration analysis

Since a fan has a rotating component it is crucial to control the vibrations caused by resonance and other factors. Furthermore, we must control the vibration of the fan in the applied position at various points.

The ISO 14694 standard indicates a maximum overall value of 4,5 mm/s. If the measured value exceeds this value the cause must be determined and the design must be changed. Our equipment enables us to see the entire spectrum of vibration frequencies and allows us to determine the causes.

\
×

Start – Stop Cycles

We test our fan design against fatigue by performing START/STOP tests.

\
×

Measurement of noise

By applying the Multi-Wing Software program Optimiser, we obtain the impeller noise level at the selected work point.

Through a careful design of the assembled fan, we avoid noise coming from pure tones or coupling of natural frequencies. Thus, we verify the acoustic design specifications when carrying out the first prototype.

\
×

Measurement of flow in the field

Using an anemometer or hot wire we can make the operation in situ according to the flow design parameters.