Industrial axial blowers, centrifugal scroll cagefans, high temperature blower fans. Sales for roof and wall exhaust and supply fan blowers, radial and BI fans, vaneaxial fan ventilators.
Chicago Blower Canada - Fans, Blowers and Ventilators

A simple roof ventilator is essentially an opening in the roof with a cover to keep out rain and to prevent winds from interfering with its functioning. Natural convection is an appreciable aid to ventilation in a large building only if it contains sources of large amounts of heat. A further useful adjunct is a fan fan, device for agitating air or gases or moving them from one location to another. Mechanical fans with revolving blades are used for ventilation, in manufacturing, in winnowing grain, to remove dust, cuttings, or other waste, or to provide draft for a fire. The addition of distribution ducts to the fan and a system for forcing air into the building provides greater efficiency. Outlets are designed to attain maximum mixing of air and to move large amounts of air at low velocity so that temperature layers are eliminated. Factories have special suction hoods and enclosures to draw away localized dust, fumes, and heat. Incoming air may be cleaned of dust by filters or electrostatic precipitators.

Deep mines, underwater tunnels, and other subterranean and submarine environments require elaborate mechanically operated systems for maintaining the air supply in a healthful condition. The lives of those working in, or traveling through, such areas depend upon a constant supply of fresh air; not only must the systems used be highly efficient, but there should be provision for emergencies in case of failure of the apparatus in operation. An outgrowth of studies of problems of ventilation is the development of methods of air conditioning heat pump is a reversible device that does mechanical work to extract heat from a cooler place and deliver heat to a warmer place. The heat delivered to the warmer place is, approximately, the sum of the original heat and the work done.

Such systems, unlike ordinary methods of ventilation, are independent of outdoor atmospheric conditions and can, therefore, maintain the indoor atmosphere at the most healthful temperature and humidity and can free the air of dust and other undesirable materials. They accomplish this, however, at a considerable cost in energy.

Roof ventilators are another option. They work in both summer and winter.  In summer, roof ventilators reduce the build up of heat in the ceiling spaces, reducing the heat load on your insulation, meaning that the insulation works more effectively.  In turn, you will save on your electricity bills as the air-conditioning systems will not have to work as hard.  In winter, it reduces the amount of condensation that forms when warm, moist air from exhaust fans meets cold surfaces.  Roof ventilators will also reduce the amount of corrosion and timber that occurs because of condensation.   Roof ventilators should be installed where there is sarking underneath tiled roofs, when metal deck roofing is used, and when there is evidence of condensation in the roof spaces or ceilings.



Canada Blower Pressure Blowers are ideal for combustion air, pneumatic conveying systems, fluid bed aeration, cooling, drying systems, and recommended to use in various high pressure applications.

With pressures to 130" WG and volumes to 20,000 CFM, the range of the Canada Blower Pressure Blower has been widened to include a selection of more than 100 wheel / housing combinations. Six blower arrangements and eight discharge positions are available for most blower models. Although direct drive is specified for most applications, belt driven models are available as well.

Pressure blowers are characterized by very stable performance: the pressure curve remains stable from wide-open to close-off, thus blower instability, or pulsation, is eliminated even when "turn-down" approaches zero flow. Standard Canada Blower alluminum dual-tapered wheel ensures optimum efficiency, an optional straight radial steel wheel is available for more rugged applications. NIS-CO advanced wheel and aerodynamic housing design combine for air-handling efficiency superior to conventional radial-wheel designs.