O. Chetchel

High Volume Air Curtain

Air curtains cut cold air loss and reduce humidity, thus reducing the load on refrigeration or air-conditioning plant and thereby saving energy by reducing compressor running time, maintenance, gas and recharging intervals. These units are an alternative ... Read >

Large Air Curtains for Shipping Doors

For commercial applications like store entrances, user comfort dictates low face velocities, which reduce effectiveness of separation of exterior air from interior air. NIS Systems Co. is a world's leading designer and manufacturer of process air-curta... Read >

Wall Exhaust Fans for Building Ventilation

When sizing an exhaust fan that does not open directly to the outside but is ducted, it is important to ensure that the exhaust fan has the capability to move stale air throughout the duct and ultimately to the outside. Here, we first need to understand w... Read >

Industrial Building Ventilation

Air enters office buildings or spaces through both mechanical ventilation systems as well as naturally through leaks around windows, doors, etc. Newer, larger buildings which are highly energy efficient due to sealed windows and heavy insulation primarily... Read >

Spark Resistant Ventilators

Some metal dust may have characteristics that require safeguards beyond those required for atmospheres containing the dust of aluminum, magnesium and their commercial alloys. For example, zirconium, thorium and uranium dust have extremely low ignition tem... Read >

Industrial Side Channel Blowers

A regenerative blower operates as a multistaged compressor. Each blade-to-blade regeneration stage results in a slight pressure increase. Total pressure rise from air entry to discharge yields a continuous operating pressure up to 300-in. w.g. (11 PSIg) o... Read >

Inline Fans for Building Ventilation

The air delivering capacity of axial flow fans ranges from 100 to 500,000 cubic feet per minute (3,000 to 15,000 cubic meters per minute). Impellers usually have blades with airfoil cross-sections. In a typical axial fan, the effective progress of the ... Read >

Heavy-Duty Industrial Blowers Fans

Aside from the small squirrel cage blowers used on some electrical equipment, the most common blowers of this type are the units used for drying carpet after cleaning or a fire, the blowers used for leaf sweeping and the unit hidden inside a vacuum cleane... Read >

Industrial Power Roof Ventilators

A reliable ventilation system that can operate during a fire is both vital and essential. It prevents smoke logging, allows people to escape quickly, minimizes damages to property and contents and enables firemen to attack the fire without hindrance. Such... Read >

Regenerative Blowers by Canada Blower Company

There are four power-source choices for regenerative blowers: DC power, AC single-phase, AC three-phase, and engine. Features for regenerative blowers include: control panels and pressure or vacuum gauges. Most control panels include adjustment controls i... Read >

Radial Blowers

A radial fan is used in so many different ways and usually run by using electricity although a radial fan can also run off a generator. Most households have a radial fan, there is generally some sort of fan found in most houses. A radial fan can be just y... Read >

Industrial Ventilators and Blowers

Industrial blowers are manufactured using a range of durable plastics and metals, or a combination of both materials. For example, industrial blowers operating in corrosive environments are usually made of polypropylene because it provides greater structu... Read >

Ventilation by Forced Draft

To obtain a reasonable degree of personnel comfort in hot weather, there are three basic factors that should be provided for in the ventilation and coolong system of a commercial or industrial building.Forced ventilation is used to control indoor air qual... Read >

Ventilators, Fans and Blowers

Aside from the small squirrel cage blowers used on some electrical equipment, the most common blowers of the centrifugal type are the units used for drying carpet after cleaning or a fire, the blowers used for leaf sweeping and the unit hidden inside a va... Read >

Centrifugal Fans and Blowers

The centrifugal blower has a number of blades mounted around the hub, which turns on a shaft that passes through the housing. A Centrifugal fan can come in three different types of fan blades. They can come with forward curved blades, backward curved b... Read >