Industrial inline fans, Canada Blower high pressure blower, ventilators, high temperature fans and blowers, centrifugal radial and in-line blowers, roof / wall exhaust and supply inline fan blowers and ventilators.
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Canada Blower is the industry leader in air make-up systems. Buffalo Blower Air Make-Up Unit is a complete air supply system in a self-contained package with fan, burner and controls. The unit is ready for connection to the gas line and power source. These Buffalo Blower AHU units are available in various sizes and types which can be designed into nearly all industrial requirements. The equipment is designed for tempering outside air and supplying it into the building for
ventilation make-up and balancing of negative pressure. The units are also adaptable to other applications where ordinary heating or drying operations are involved. Available with centrifugal and axial fans.

Why Do You Need MakeUp Air?

Fans and blowers used in spray booths, hoods, ovens, dust collectors, ventilators and other plant equipment exhaust air to the outside. Without a controlled introduction of “make-up” air an air-starved environment will result.

When Do You Know You Need Make-Up Air?

Make-up air is required when:

• Gravity stacks from unit heaters and processes back vent.
• Exhaust systems do not perform at the rated volume leading to poor control of contaminants.
• The perimeter of the building is cold due to a high infiltration rate.
• There are several indrafts at exterior doors, windows and building openings.
• Exterior doors are hard to open.
• Heating systems are not able to maintain uniform comfort conditions throughout the building. The outer core area is cold due to infiltration while the center core is overheated.

How Much Does Make-Up Air Cost?

Make-up air does not cost money. It actually saves money by:
• Extending the life of heat exchangers on combustion equipment.
• Providing more uniform temperatures throughout the building, reducing overheated areas and cold drafty areas.
• Allowing exhaust systems to operate at designed capacity, reducing the need for additional equipment.
• Minimizing the damage to materials from contaminants that may exist in the local atmosphere.
• Reducing employee turnover and absenteeism because of better health conditions and plant cleanliness.
• Improving products with fewer rejects because furnaces operate at designed conditions.

The recommended procedure to determine the amount of make-up air needed is to total the CFM capacity of all the exhaust fans and blowers in the plant and add 10% to create a positive pressure situation. If the data is not available, the following equations can be used as a means of determining how much make-up air is required.

Paint Spray Booth: 125 to 175 CFM per square foot of face opening
Oven Exhaust: One air change per minute of oven volume in cubic feet
Fume Exhaust: CFM = area of discharge pipe in square feet x velocity (3,000 FPM average)
Roof Ventilator: CFM = area of discharge pipe in square feet x velocity (3,000 FPM average)
Dust Collector: Area of discharge pipe in square feet x velocity (4,000 FPM average)
Canopy Hoods: 100 to 300 CFM per square foot of hood open area
Combustion Air for Furnaces: CFM = fuel consumed in Btu per hour divided by 6,000
Drying, Baking or Curing Ovens: 100 CFM per square foot of both cross sections
Pickling or Cleaning Tanks: 150 CFM per square foot of door opening or 200 CFM per square foot of hood face opening

Buffalo Blower high pressure marine duty fans use a one-piece cast aluminum propeller with fixed pitch ventilator blades. Buffalo Blower  fan blades can be cut to one of several diameters in order to provide various hub-to-tip ratios. Varying hub-to-tip ratios allow for different fan pressure and efficiency characteristics and the option of having several different fan wheels (different hub ratios) for a set diameter.

Canada Blower CBD centaxial fan is designed for continuous duty operation in air moving systems handling clean air. Typical fan applications are industrial space ventilation exhaust or supply, industrial fume ventilation (where a suitable coating has been applied if the fumes are corrosive), air make-up, air conditioning, evaporative cooling, heat recovery systems, or as an exhaust fan on the clean air side of certain types of dust collectors and air scrubbers.

Canada Blower CBD features Canada Blower BI backward inclined airfoil fan wheel for non-overloading blower performance, high operating efficiency and low fan noise. The CBD Canada Blower ventilator provides straight-through airflow and can be installed directly in a straight duct having the same size and shape fan inlet and outlet.

Canada Blower Tubular Centrifugal Fans:

For tubular centrifugal fans with factory mounted motors, Canada Blower offers Arrangement 4. Arrangement 4 is direct drive fan, where the impeller is overhung on the motor shaft. The motor is supported within the fan casing. Canada Blower  fans are typically available for either horizontal or vertical mount fan configurations.

For belt drive tubular centrifugal fans, you have Arrangement 9. This is where the impeller is overhung on a shaft supported by bearings mounted within the casing. This fan is also designed for mounting in either a horizontal or vertical orientation. The motor on this Arrangement 9 fan is mounted external to the fan casing.

Axial Fans:

Like the centrifugal fans, the AMCA standard addressing axial fan drive arrangements is also an ISO standard. The choice for direct drive axial flow fans is Arrangement 4.

Arrangement 4 is direct drive blower where the impeller is overhung on the motor shaft. There are no bearings on the fan and the motor is mounted on a base or integrally mounted to the fan housing.

Axial Belt Drive Fans:

For axial flow belt drive, your definition is Arrangement 9. In this fan arrangement, the impeller is overhung on a shaft with two bearings mounted either upstream or downstream of the impeller. The motor is mounted to the fan casing or on a base that is integral to the fan casing.
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Never before has the need for adequate workspace ventilation been clearer to safety experts. Factories, warehouses, mines, offices and all other places where workers spend their time must be adequately ventilated and heated or cooled in order to minimize risks to air quality and maximize comfortable conditions, which contribute to productivity.