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Canada Blower Co. has developed Low Profile Positive Pressure Ventilators that have been designed to fit in tight compartments and small spaces without sacrificing performance or features. These compact ventilation blowers are available is both gasoline driven configuration and with 115/230V single phase electric motor:
           
Canada Blower Positive Pressure Blower is a high volume fan use to pressurize a burning structure, in case of fire, in order to force the smoke out. Canada Blower Positive Pressure Blowers are portable, gasoline powered fans, most of which utilize a 5.5 horsepower engine.
 
The theory of positive pressure ventilation is based on the principal of even pressure distribution. Once a structure is pressurized, air and smoke can be forced out through any opening (similar to escaping from an inflated balloon).
 
Canada Blower electric smoke ejectors (negative pressure ventilation) can be used for smoke removal but this has proven to be inferior to positive pressure ventilation:
 
What makes Canada Blower Positive Pressure Ventilation superior to negative pressure ?
 
* The risk of injury from the engaged structure is reduced while placing the fan in operation.
* Positive pressure ventilation is faster to set up and requires fewer personnel.
* The Positive Pressure Blower has a self contained power source, while electric fans require cords and adaptors.
* Smoke and heat is removed from all levels of the structure unlike negative pressure which can result in localized extraction.
* Quicker results. After initial knockdown, positive pressure ventilation can be initiated and will show immediate improvements in the interior conditions.
* It allows replacement of contaminants with vital cooler, cleaner air - especially in sealed or windowless buildings. It's also very effective in large and compartmentalized buildings, warehouses, schools, etc.
* Quick results allow firefighters faster entry due to lower heat levels and improved visibility.
 
The following criteria should be considered for effective use of Positive Ventilation:

- The cone of air must cover the intake opening.
 
The fan must be placed the correct distance from the structure such as that the cone of air forms a seal around the opening.

- The size and location of the discharge is important.
 
The blower discharge, if at all possible should be as high and far away from the intake as is practical. The discharge size should be between 3/4 to 1/2 times the intake. This may not always be possible as the fire may have already dictated discharge locations and sizes; but whenever there is a choice, the above criteria should be used.

- It is important to control the air flow between the intake and discharge.
 
Positive pressure ventilation can move air long distances if proper control is maintained by opening and closing doors, windows, etc. It is important that firefighters understand not to open the structure too much: ie breaking windows, etc.
 
The standard features of Canada Blower Positive Pressure Ventilators include: fold down "T" handle; 8" pneumatic tires with full width axle; a "tilt and lock" device that allows the unit to be angled 20 degrees up or down with infinite positions in between; sturdy and light 1 inch wrap around frame. Explosion proof electric motors are available as drivers too.
 
The optimum Canada Blower ventilator placement distance on most 6' 6" doors is about five to six feet away. If placement is too close, the seal won't be achieved. If placement is too far away, the cone of air will be hitting well outside the opening.
 Backward curved fan blowers in New York City and Chicago, aerofoil / acoustafoil, or aerocline fan blowers with high temperature construction, stainless steel SS316, SS316L, SS304, aluminum, explosion proof - spark resistant construction, monel construction. Supply of replacement backward curved (BC) fan blowers and airfoil (AF), or acoustafoil (AcF), or Aerocline fan blower parts for backward curved bc fan blowers manufactured by Buffalo Blower - New York, Twin City Fan, Northern Blower, Chicago Blower, Sheldons, Cincinnati Fan, Hartzell, IAP, Industrial air products, Canadian blower, Aerovent, Penn Ventilation, Penn-Barry, Barry Blower, ACME, Aerovent, Alphair, American Fan, Lau Industries, Clarage, Delhi, Canarm, Leader Fan, Daltec, ABB, Flakt, Flaktwoods, Woods, MK Plastics, Robinson Industrial, Garden City Fan, Loren Cook, Jen-air, Jenn Fan, Aeroflo, Grainger, Greenheck, Kice Fan, ILG Industries, Canada Fan, Industrial Air, Ceilcote
Widely recognized for design efficiency and integrity, Canada Blower airfoil wheel has ideal characteristics for variable air volume systems. The fan's deep spun inlet and hyperbolic wheel cone plus generous fan housing proportions provide a smooth stable air flow over the entire performance range. Precision balancing assures quieter vibration-free operation that adds to the overall reliability and performance of Canada Blower's airfoil fans.

Fans used in gas turbine systems are mounted onto gas-turbine generator packages for use in power plants as well as on cruise ships, oil rig platforms, and mobile generators. These systems are loaded onto tractor-trailer rigs or barges and moved to a site to generate power for events like the Super Bowl and concerts. Manufacturers of these gas-turbine generators are realizing it pays to have the right fan for the job from the start and are turning to Buffalo Fan to provide these unique solutions.

In the past, the OEM purchased the necessary fan equipment then mounted it on its gas turbine generators. These generator sets were then shipped to job sites all over the world and installed in coastal areas, jungles, deserts and other extreme locations (even water-based applications like cruise ships and oil rig platforms). A key requirement for these applications is that the fans need to be exceptionally corrosion resistant to withstand these severe environmental factors.

Noise attenuation is a major issue for power generators, both to protect workers  hearing and to keep operation at the quietest level for any surrounding residential or business communities.

Power generation is a complex process. The power generation fan / blower equipment should be tough enough to avoid operational failure and to minimize installation and repair work. The rugged, high performance fans Canadian Blower provided to a state-of-the-art hybrid energy center, were ideal for the task. Canadian Blower was chosen for this project because of their reputation for building large custom fans for extreme industrial applications. The energy center s primary requirement was that its chosen vendor be able to design and build a set of the most rugged, efficient roof ventilators within budget. Most roof ventilator fans last between 10 and 20 years when properly maintained. Because of the permits and cost involved in performing maintenance work on the roof of a power plant, they wanted their fans to have a longer life span (up to 40 years). This lifespan requirement meant that the fans had to be constructed using industrial grade materials and components.

Canadian Blower propellers provide equal airflow in both directions. Other companies  fans have a standard-exhaust one-direction propeller and are run backwards for the supply mode, producing about 40 percent of exhaust-mode airflow. Canadian Blower Fan blowers produce 100 percent airflow in either direction. Aerovent also produced an integrated electrical control system guaranteed to work with its fans instead of the power plant having to acquire a separate system from another source. The system features an onboard starterdisconnect switch, which boosts the motor s start and can be easily disconnected.

Fire safety is a challenge in any environment, and especially so in a power plant. In case of a fire, the first priority is to ensure the safety of employees. Another goal is to be able to salvage expensive equipment in the building. With ventilation fans, if the motor fails during a fire, it is more beneficial if the fan s dampers automatically fail in the  open  position, and allow smoke to escape.

Canadian Blower s expertise in custom-building fans for complex applications, like this energy center, allowed them to design and construct a special fire damper for the fans. When the motorized damper is activated, a metal linkage arm attached to the damper blades moves to open or close the damper.