Ruck Air Movement Prime Evo EC Mixed Flow Fans

Greater Efficiency. Higher Performance

Ruck Air Movement develops highly efficient solutions for ventilation applications. Together with an outstanding aero-efficiency, the use of brushless DC motors ensures the highest overall efficiencies, which show their strength especially in the partial load range.

EC motors are permanent magnet motors in which the unit is electronically commutated. This commutation electronics uses a rectifier to convert the AC mains voltage to DC voltage and then applied controlled to the motor windings. Low winding temperatures and low losses ensure a long lifetime and high efficiencies for EC motors.

In ventilation units, compared to conventional AC motors, the EC motors generally require less power for the same flow rates. A special savings potential is achieved by the EC fans when used in partial load. Here the efficiency loss is much lower in case of EC fans compared to AC fans with similar capacity. With this technology, a more efficient, silent and continuous speed control is possible.

Available in the following sizes:

• 10"
• 12"

Features & Benefits of Ruck Prime Evo EC Mixed Flow Fans

Diaganol fan with three-dimensionally curved impellar blades and robust housing made of galvanized sheet steel, plastic, or aluminum as well as...

• Highest aerodynamic efficiency through computer optimized, three dimensionally shaped impeller and guide vanes
• Steplessly controllable, energy saving EC motors
• Protected motor in the hub area, does not influence the airflow
• Corrosion resistant, injection molded plastic housing
• IP rated X4 for high humidity environments
• Max. airflow: 3350 cfm

Determining your requirement - Exhaust vs Recirculating (Scrubbing)

You will need to determine whether or not you are exhausting (going from a contaminated environment to a sterile environment in only a single pass through the filter) or recirculating, aka “scrubbing” (exhausting the system back into the contaminated space).

Exhaust

In an exhaust setting the air only passes through the filter one time so it is imperative that we remove as close to 100% of the contaminate as possible with that one chance. This requires that the contaminant have a certain time in contact with the carbon in order to be fully adsorbed. Our filters are marked with both exhaust and recirculating ratings for just this reason. If you are using this system to exhaust, DO NOT exceed the exhaust rating for the filter, the more this rating is exceeded the less contaminant will be adsorbed because the two will not have enough contact timefor adsorption to fully take place.

Recirculating

In a recirculating system , the contact time is not such a crucial number as we are taking contaminated air, filtering it, and releasing it back into what is typically and constantly decontaminated environment. It is for this reason that it is not necessary to remove 100% of the contaminant in a single pass. Instead we double the exhaust rating which will reduce the contact time, the goal here is to still remove a large portion of the contaminant but to get raise the cycle rate of air through the filter above the rate of emission from the source. Now, instead of removing 99.9% of the contaminant in a single pass we are getting closer to 60% but we are getting twice as many cycles through the filter in the same amount of time and over time, reducing the overall build-up of contaminant in the environment.

Sizing Your Space

Once you’ve determined the type of system you need, it’s time to size your space.

Typically for exhaust we recommend a simple length x width x height /3 calculation. This will give you the amount of air (cubic feet per minute, CFM) that you will need to move to properly ventilate your space allowing for a three-minute air exchange (all the air in the space is exchanged for fresh air every three minutes). This is the number you will match your filter to.

Example:
Room size: 10’x12’x8’ (960 cubic feet)
960 cubic feet / 3 minutes = 320CFM (Minimum recommended CFM to exchange the air every 3 minutes)

For recirculating systems, you can use the same length x width x height but divide by 1.5. This will give you a high cycle rate while still ensuring the removal of a majority of contaminant with each pass through the filter.

Specifications: