Inline Centrifugal Exhaust Fans & Blowers

Industrial Blowers and Fans — About Air Handing Fans

Since July 1, 2003, equipment manufactured for operation in potentially explosive environments has been required to comply with the European Directive 94/9/EC. This directive, commonly referred to as the ATEX Directive, applies to all countries in the European Union (EU) and the European Economic Area (EEA). The ATEX Directive is a collection of EU directives outlining equipment installed and operated in potentially explosive atmospheres. The ATEX directive coordinates various technical and legal conditions throughout Europe to ensure a high level of safety for the end-user by reducing the explosion risk through established design methods. The European Committee for Standardization (CEN) published EN 14986 as a standard specifically for the manufacture of fans for use in hazardous areas. This standard is a guide specifically for fan manufacturers to comply with the ATEX Directive.

Industrial Blowers & Fans – Air Handling Units

Air Handling Units (AHU) combine a fan (or several fans) with other components such as heating and/or cooling elements, filters, and dampers as a means to collectively condition the air in a building. AHU is a general term comprised of many specific types of air handlers including: Make-Up Air Units (MAU), Packaged Units (PU), Rooftop Units (RTU), and Energy Recovery Units (ERU). Air handlers range from very small, low CFM light-duty construction to very large, high CFM heavy-duty construction, and are used in many types of buildings that require air conditioning such as office buildings, hospitals, universities, schools, manufacturing facilities, and data centers. Typically, air passing through an AHU is clean and varies in temperature depending on the specific application. Energy consumption and noise are often important considerations when selecting a fan for an AHU. Plenum fans and DWDI fans are commonly found in these units, but are not used exclusively. To accommodate the various applications these units are used for, Canada Blower offers the most diverse and efficient fans in the industry to meet the need of any air handling unit.

Inline Exhaust Fans Centrifugal Blower Fans

Building elevator shafts require proper air moving equipment to provide smoke control in the event of a fire. Pressurization is used to prevent smoke from migrating through elevator shafts to other floors, similar to how fans are used to control smoke in stairwells. Today’s elevator pressurization systems are designed to allow elevators to be used by firefighting teams. However, some systems are designed for the evacuation of handicapped individuals. While small amounts of smoke in an elevator may be tolerated by firefighters, smoke in an elevator and its entry and exit paths is unacceptable. Canada Blower’s complete offering of smoke and heat exhaust fans are relied upon for elevator shaft exhaust/pressurization in emergency situations.

Buffalo Fans Blowers

Electrical bus systems are used for conveying large volumes of energy within power generation facilities. The efficiency of an electrical bus is a function of temperature. The cooler you are able to keep the bus the more efficient it will operate. Power plants utilize large electrical buses and Buffalo Blower provides fans for cooling these systems. Typically this involves clean air which is circulated through a closed loop system.

Industrial Buffalo Blower Fans Supplier

Air supply and filter houses provide the clean supply air for large scale paint booth applications. The supply air is conditioned and filtered to the precise temp and humidity for the given paint system. This supply air is sent to the main paint booths, curing ovens, electro polishing rooms and pre-treatment areas. Buffalo Blower offers a variety of efficient airfoil fans to meet the stringent requirements of any customer.

Industrial Blower Manufacturer & Suppliers

Emergency smoke exhaust systems are designed to remove smoke and heat from buildings in the event of a fire. These systems play a crucial role in increasing occupant safety and allowing rescue personnel to safely enter burning buildings. Canada Blower offers a full line of smoke and heat fans capable of withstanding a minimum temperature of 500°F for four hours or 1,000°F for 15 minutes. Our inline smoke and heat fans are also available in a vertical roof mount configuration featuring a discharge cap with butterfly dampers and an optional fusible link designed to stay open in the event of a fire.

Industrial Fans

Energy recovery systems have become a popular way to heat and cool homes as well as commercial buildings. Energy recovery applications typically use two fans that provide air through a heat exchanger that “treats” the air by heating or cooling it before it enters the building. Canada Blower’s plenum and forward curved fans are typically used for energy recovery applications and offer a wide range of performance and flexibility.

Inline Exhaust Centrifugal Fans

Generator rooms require a wide range of fans to optimize the performance of generators and other equipment. Exhaust fans are used to prevent heat buildup within the generator room, while supply fans are used to provide fresh air for combustion and efficient generator performance. Room size, space limitations, and mounting capabilities will determine the exact type of fan needed for each specific application. As a leading manufacturer of air moving equipment, Canada Blower offers numerous fan types for meeting any generator room specification.

For additional information please refer to http://canadablower.com

Susan Terlitski
Building Ventilation Engineer
Canada Blower Co.
canadablower@canadablower.com
http://canadablower.com/heat/index.html
http://canadablower.com/heatexchanger/index.html

Air Handling Ventilation Fans

canadablower@canadablower.com

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buffaloblowercom

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Large Industrial Fans Supplier & Manufacturer

Large Industrial Fans

Based on the specific process, Northern Industrial Supply Fan products can be customized to meet the most demanding mining applications including underground ventilation, dust control systems, mineral processing, and for cooling major components in engines, braking systems and drilling equipment. Northern Fan designs its fans with a number of special features such as custom motors-flex connectors, C-Damper actuators, explosion proof motors and a wide range of abrasion resistant, spark resistant and high temperature construction features. Transportation tunnels and mining tunnels must be properly ventilated — both during their construction and in ongoing use. The aerodynamics involved in ventilating these tunnels can be very intricate and require special attention to detail, especially when lives are at stake.

Industrial Blowers and Fans Supplier

By leveraging its engineering experience and application expertise, Northern Fan Co has become a leading supplier of fans for all types of automobile and train tunnel ventilation. Wind tunnels are designed to model weather patterns and test wind resistance and noise suppression for all types of vehicles and aircraft. These sophisticated fans operate at low noise levels and deliver uniform velocity profiles to the test piece. Because of its engineering resources and testing capabilities, Northern Fan Co. is one of the only fan manufacturers that can design, build and validate the proper air moving equipment for wind tunnel applications.

As application experts in the field of air moving equipment, Buffalo Fan is a major supplier of fans to the power generation industry, and provides a full line of fans for boiler systems, Selective Catalytic Reduction and desulphurization processes, dust collection, turbine cooling and exhaust, bus cooling, combined cycle gas turbines , mist collection, and enclosure ventilation. Northern Fan can also repair and provide retrofit parts for fans from a variety of other manufacturers.

High Temperature & High Pressure Blowers and Fans

For day-to-day operations, nuclear power plants rely on numerous fans — all of which must be of superior quality in terms of durability, dependability, safety, and ease of maintenance. Northern Fans are designed for various applications in nuclear plants including motor / turbine cooling, material processing / refining, reactor vessel cooling, hot cell pressurization, battery room ventilation, general exhaust and make-up air, HVAC, and several safety-related systems. Our in-house Nuclear Quality Assurance (NQA) program ensures that all of our products and components are compliant with industry regulations. In addition, Northern Fan is one of the only fan manufacturers that can meet the nuclear industry’s stringent documentation, inspection and verification requirements.

Largest North American Industrial Fans & Blowers Supplier

Northern Fan is the largest North American supplier of fans to both Industrial and Commercial market OEMs. OEMs prefer these fans, as Northern Fan offers the most comprehensive fan line from heavy industrial to light commercial. Because of extensive expertise in mass customization, Northern Fan can tailor our products to meet the many needs of equipment manufacturers in any market.

Original Equipment Manufacturers require specially engineered products to meet specific demands for size, fit-up, efficiency, sound and durability. Northern Fan is able to provide the right fan for every application and modify as needed for the specific installation.

Large Industrial Fans & Blowers Uses and Applications

Thus, Northern Fan products are used in a wide variety of original equipment, including:

– HVAC & Air Handling Units
– Custom Air Handling
– Packaged Units
– Make-Up Air
– Energy Recovery Units
– Lab Exhaust

Equipment for Process and Manufacturing:

* Dryers
* Ovens
* Freezers
* Welding Exhaust
* Spray Booths
* Dust Collection
* Environmental Pollution Control

Additional information can be found at the Northern Fan company web site http://www.northernindustrialsupplycompany.com/company.html

Oleg Cthetchel
Air Process Systems Engineer / Designer
Northern Fan Co.
nis@primus.ca
http://www.northernindustrialsupplycompany.com/burlington/index.html
http://www.northernindustrialsupplycompany.com/burlington/request4.html

Ventilating Fan

nis@primus.ca

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Industrial Centrifugal Blowers and Fans

Industrial Blowers & Fans Supplier

Industrial Fan Blower Co. specialises in the development of air movement systems to suit your individual needs. Operating since 1979 we have over thirty years’ experience in the design, manufacture, installation, maintenance and commissioning of the centrifugal fan, and similar systems, and are proud to have gained a reputation for providing an efficient service, technical expertise and a quality of craftsmanship that is unmatched in the industry.

Centrifugal Fans & Blowers

Our in-house team has the technology knowledge and practical application experience to comprehensively assess your needs and design bespoke solution for your requirements.
Our detailed centrifugal fan range of direct drive in line fans are designed to withstand high temperatures. They have motors which are located out of the air stream and a high pressure development system within the centrifugal fan systems which allow for optimum performance no matter where you choose to install them. The ideal solution for commercial and industrial premises we’re confident that out centrifugal fan systems are amongst the foremost available products on the market today.

In additional to the traditional centrifugal fan systems that we provide we’re fully equipped to provide a completely bespoke centrifugal fan solution to any premises where space comes at a premium. All you need to do is contact us with your specific requirements and measurements and our ingenious team of designers will manufacture a centrifugal fan that perfects fits any unusual space. We’re perfectly happy to work alongside architects and builders for any refurbishment or new build products should you require any of our air movement or extraction systems and need structural advice.

Industrial Fan Blower Co. fans and blowers aare used in a variety of applications throughout industry, ranging from providing air for combustion, process aeration, fermentation, drying, cooling and conveying; for extracting dust or fumes, and for handling any type of unusual gas.

Industrial Centrifugal Blowers and Fans Applications

As an illustration of the diversity of uses for our products, some applications are:

FOOD INDUSTRY

– fans for boiler plant in distilleries, breweries and food processing plant. Fans to provide air for germination and drying in maltings.
– Turbo pressure blowers to provide air for fermentation in yeast plants and side channel pressure blowers to handle carbon dioxide.
– Process fans for heating, hot air recirculation, drying, cooling and ventilation for flour mills, bakeries, cereal and chocolate production, and many other food processes.
– Turbo blowers for carbon dioxide injection for sparkling water and wine.

PHARMACEUTICAL

– Specialised process fans and pressure blowers.
– Fans for utility services.
– Clean room ventilators.

GLASS PRODUCTION

– Fans for furnaces and for cooling/tempering.
– Turbo pressure blowers for high pressure gas storage.

For more information on our centrifugal fan range of options, or to see our complete range of products, including energy efficient fans, which increase fan efficiency by fifty percent, or our testing service that ensures that your company complies with all health and safety and COSHH regulations then come visit us online at the Industrial Fan Blower company web site http://www.industrialfanblower.net

Oleg Tchechel
Developer of Industrial Air Make-Up Units
Industrial Fan Blower Co.
asap@buffalofan.com
http://www.industrialfanblower.net/cbd_services.htm
http://www.industrialfanblower.net/cbd_feedback.htm

Multistage Blowers

air handling unit airhandler AHU conditioner industrial commercial ventilator fan blower building ventilation ventilating cooling heating circulation circulating roof top supply

asap@buffalofan.com

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Industrial Centrifugal Blower Fans & Axial Fans

Backward Inclined Blowers

Backward Inclined Fans – Simple flat blades, but backwardly inclined to match the velocity pattern of the air passing through the fan wheel, which results in high-efficiency operation. These fans are typically used in high-volume, relatively low-pressure, clean air applications.

Centrifugal Blower Fans

Airfoil Centrifugal Fans are used for a wide range of applications in many industries, hollow-bladed airfoil fans are designed, engineered and tested for use in airstreams where high efficiency and quiet operation are required. They are used extensively for continuous service at ambient and elevated temperatures in forced and induced draft applications in the metals, chemical, power generation, paper, rock products, glass, resource recovery, incineration and other industries throughout the world.

Backward Inclined Blower Fans

Backward Curved Fans – Efficiencies nearly as high as the airfoil design. However, single-thickness metal blades prevent the possibility of dust particle buildup inside the blade. These fans can be built with long-lasting erosion-resistant liners. The robust design allows high tip-speed operation, and therefore this fan is often used in high-pressure applications. This design frequently offers the best compromise for long life and high efficiency.

Radial Blade Blowers

Radial Blade Blowers – Flat blades oriented in a radial pattern. These rugged fans offer high pressure capability with average efficiency. They are often fitted with erosion-resistant liners to extend the rotor life. The housing design is compact to minimize the floor space requirement.

Forward Curve Blower Fans

Forward-Curved Radial Tip Fans – This rugged design is used in high-volume flow rate applications when the pressure requirement is rather high and erosion resistance is necessary. It offers medium range efficiencies. A common application is the dirty side of a baghouse or precipitator. The design is more compact than airfoil, backward curved or backward inclined fans.

Industrial Blowers

Paddle-Wheel Blowers – This is an open impeller design without shrouds. Although the efficiency is not high, this fan is well suited for applications with extremely high dust loading. It can even be offered with field-replaceable blade liners from ceramic tiles or tungsten-carbide. This fan may also be used in high-temperature applications.

Forward Curve Blowers

Forward-Curve Fans – This “squirrel cage” impeller generates the highest volume flow rate (for a given tip speed) of all the centrifugal fans. Therefore, it is often the smallest physical package available. It is commonly used in high-temperature furnaces.

Industrial Exhaust Fans

Industrial Exhausters – Relatively inexpensive, medium-duty, steeply inclined flat-bladed fan for exhausting gases, conveying chips, etc.

Pre-Engineered Blade Blower Fans

Pre-engineered Fans – are series of fans of varying blade shapes that are usually available in only standard sizes. Because they are pre-engineered these fans may be available with relatively short delivery times. Often, pre-engineered rotors with various blade shapes may be installed into a common housing. These are often available in a wide range of volume and pressure requirements to meet the needs of many applications.

Industrial Pressure Blowers

Pressure Blowers – High-pressure, low-volume blowers used in combustion air applications in furnaces or to provide “blow-off” air for clearing and / or drying applications.

High Pressure Blowers – Surgeless

Surgeless Blowers – High-pressure, low-volume blowers with a reduced tendency for “surging” even at severely reduced flowrates. This allows extreme turndown (low-flow) without significant pulsation.

The main types of Axial Flow Fans include:

Axial Fans – High Temperature

High-Temperature Axial Fans – High-volume fans designed to operate against low flow resistance in industrial convection furnaces. These are found in either single-direction or bi-directional designs. Extremely rugged, they are most often used in high-temperature furnace (up to 1800 degF) applications.

Tube Axial Fans

Tube Axial Fans – Cataloged high-volume low-pressure fan line with a wide range of available sizes. Suitable for temperatures up to 250 degF.

Vaneaxial Fans

Vaneaxial Fans – Axial flow fans with higher pressure capability due to the presence of static vanes.

Variable Pitch Axial fans

Variable Pitch Axial fans – Axial fans with manually adjustable blade angles. This allows operation over a much wider range of volume/pressure relationships. The blades are adjusted periodically to optimize efficiency by matching the blade pitch to the varying conditions for the application. (Often used in mining applications).

Variable Pitch on-the-fly Axial Fans

Variable Pitch on-the-fly Axial Fans – These are similar to “Variable Pitch Axial Fans” except these include an internal mechanism that allows the blade pitch to be adjusted while the fan rotor is in motion. These versatile fans offer high-efficiency operation at many different points of operation.

Variable Speed Fans

Variable Speed Fans – All of the fans described above can be used in conjunction with a variable speed driver. This might be an adjustable frequency AC controller, a DC motor and drive, a steam turbine driver, etc. Flow control by means of variable speed is typically smoother and more efficient than by means of damper control. Significant power savings (with reduced cost of operation) are possible if variable speed fan drives are used for applications that require reduced flow operation for a significant portion of the system operating life.

For additional information please refer to http://www.northernindustrialsupplycompany.com/burlington/request5.html

Oleg Tchetchel
Industrial Ventilating Designer
Northern Industrial Co.
http://www.northernindustrialsupplycompany.com/burlington/request7.html
http://www.northernindustrialsupplycompany.com/burlington/request2.html

Centrifugal Fans and Axial Fans by Northern Industrial Blower

fan blower ventilator high temperature pressure industrial super transfer air gas positive negative heavy duty capacity process

fan@cogeco.ca

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Industrial Pressure Blowers

Applications for Pressure Blowers include: combustion, air, fluid bed aeration, cooling, drying and many process system applications. It is also commonly used in pneumatic conveying systems.

Industrial Pressure Blowers & Radial Blade Blowers

It is also commonly used in pneumatic conveying systems. Industrial pressure blowers and high pressure radial fans are supplied in cast aluminum, cast iron, or all-welded construction to prevent flexing at high pressure. Available in direct drive arrangements 4 / 4V / 4H / 7 / 8 and belt drive arrangements 1 / 9 S / 9T / 9H. Capacities: to 10,000 CFM. Single stage pressure blowers develop up to 4 psi static pressure. Two stage pressure blowers and multistage pressure blowers are for higher pressure.

Single Stage Pressure Blowers

An extremely wide performance range is provided by 70 wheel /housing combinations. The High Pressure Blower is available in four arrangements and eight discharge positions to suit most every application. In addition to direct drive, the pressure blower is also available in belt drive.

High Pressure Blowers Operating Range

Operating Range of Design High Pressure Blowers can be summarized as:

Maximum CFM: 18,000
Maximum Static Pressure: 91″ wg
Maximum Temperature: 200°
Fan Sizes: 4″ to 14″

Industrial Pressure Blowers – Aluminum

DESIGN CAST ALUMINUM PRESSURE BLOWERS

Northern Fan Design aluminum pressure blowers utilize high-strength alloys to create strong, corrosion-free housings and wheels ideal for adverse industrial environments. Aluminum also stands up to sub-zero ambients without material deterioration. Since aluminum is non-magnetic and non-toxic, Buffalo’s pressure blowers are recommended for both electronic and food related applications. The non-sparking properties qualify Buffalo’s pressure blowers for AMCA Type B spark resistant rating.

Operating Range of Design Cat Aluminum Pressure Blowers is:

Maximum CFM: 4,000
Maximum Static Pressure: 20″ wg
Maximum Temperature: 200°
Fan Sizes: 8″ to 18-1/2″

Radial Blade Blowers – High Pressure

PA HIGH PRESSURE RADIAL FANS

To meet specific applications, Northern Fan Co. PB radial fans can be built with stainless steel or alloy construction. Split housings facilitate wheel removal without disturbing connecting ductwork. Integral inlet boxes, pre-spin inlet dampers and opposed-blade outlet dampers all control air flow. Belt guards and shaft coolers are also common options, in addition to the various housing and wheel liners. The Northern Fan engineers are eager to design and build the pressure fan that meets your exact requirements.

Radial Blade Blowers – High Pressure. Applications

Application for HPB High Pressure Radial Fans are:

Northern Fan Co. Pressure Air Fans are at work in as many diverse applications as they are in locations throughout the world. Clean air applications include combustion air, air drying primary air ejectors, and product cooling. This fan can handle pneumatic conveying systems. The HPB fan is ideal for corrosive exhaust, air pollution systems and chemical processing. By adding ceramic tile or chromium carbide wheel and housing liners, Northern Fan Co.’s PA fans easily handle abrasive materials. In particular, fans with ceramic tile liners are extremely effective in pulverized coal applications, handling up to 250 grains per cubic feet of air. For corrosive gases, a stainless steel wheel and housing is available, or a lower cost rubber-lined, mild steel housing will often fulfill the requirements.

Operating Range for HPB Radial Blowers:

Maximum CFM: 440,000
Maximum Static Pressure: 108″ wg
Maximum Temperature: 1000°
Fan Sizes: 20″ to 100″

Additional information can be found at the Northern Fan company web site http://www.northernindustrialsupplycompany.com/products/air_handling_units.html

Oleg Tchetchel
Canadian Engineer of Industrial Air Make-Up Units
Northern Fan Co.
nis@primus.ca
http://www.northernindustrialsupplycompany.com/products/heat_exchangers.html
http://www.northernindustrialsupplycompany.com/products/humidifiers.html

High Pressure Fans – Pressure Blowers

pressureblower@cogeco.ca

Oleg Tchetchel

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chicagoblower

chicagoblowerc

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Industrial Blowers in Ventilation

In case of temperatures above 220 degrees and metal and if pressure is above 10 wg (water gage), typical recommendations in the construction of industrial blowers are generally fiber glass.

Industrial Blowers in the Environment

By the size of the environment in which it is to be operated the size of the blower may be regulated. For example, to house both the fan and its power supply, some units are big enough. Mainly used for cleanups and in spaces that require temporary circulation or air transfer, there are smaller and portable blowers.

To circulate the movement of air and gas in ventilation applications, industrial blowers are mainly used. To replace impure or contaminated air with fresh air by swirling it around is their main function. Medical, agricultural, chemical, oil and gas, mining and construction, automotive, food processing, almost every industry uses blowers for different purposes such as drying, reducing the levels of heat, reducing smoke and odors, processing and controlling gaseous fumes.

For industrial area, air conditioning can often become too large of an expense but now with technological advancements, these days industrial fans are being that bring some much needed relief. Industrial electric fans manufacturers are coming up with fans that are quite helpful and advantageous for places where dampness, heat stratification, and stagnant air are common and recurring problems. Also, these fans can be used for high static pressure. These units replace air as well by blowing out the old and stagnant air for a wide area that otherwise would collect this air without replenishing it in entirety which is also referred to as an industrial electric blower.

Industrial Blowers for Ventilation

In the removal of pollutants like carbon monoxide, dust and metal particles, sulphur dioxide, nitrous oxides, sulphuric acid, and hydrocarbon solvents, the industrial fans are very helpful. In comparison to an air conditioner, industrial electric fans do not use as much electricity. They also circulate air and cool it at a fast rate for a large space. The larger motor of an industrial fan is actually guaranteed to save energy costs on any industrial ventilation solution with high-powered, energy-efficient motors.

Able to generate a substantial volume of air with minimal vibration in a limited space, like the ones used in air conditioning, heating, ventilation and vacuum cleaners, a centrifugal blower is a common device. Through its center, a centrifugal blower intake air and directs it through a perpendicular opening in the housing. Thus blowers are necessary in various industrial places.

Additional information can be found at the Industrial Fan Blower company web site http://industrialfanblower.net

Oleg Tchechel
Developer of Industrial Air Make-Up Units
Industrial Fan Blower Co.
asap@buffalofan.com
http://www.industrialfanblower.net/cbd_about_us.htm
http://www.industrialfanblower.net/cbd_links.htm

Blowers In Industrial Ventilation

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Industrial Propeller Fans

Industrial Propeller Fans – Belt Drive & Direct Drive

Northern Fan Canada Axial Filtered Air Vents are designed for low pressure building ventilation, room ventilation, industrial ventilation, commercial ventilation and industrial process application. Typical applications include heat, smoke, and fume removal; process ventilation and process air handling; proces drying with ambient or preheated air; comfort process cooling and general ventilation of buildngs. Available in direct drive arrangement 4 and corresponding belt drive arrangement 9. Sizes from 6 thru 96. Capacities: to 350,000 CFM. Static pressure to 2.5 inches water gauge.

Spark Resistant X-proof construction: wall fan for non-sparking x-proof applications is supplied in AMCA A (all aluminum or monel airsteram), AMCA B (aluminum wheel, or monel wheel), or AMCA C (buffer type) spark resistant construction. For AMCA A applications wheel is made of non-ferous material with monel shaft and special x-proof motor.

Propeller Fans – Wall Fans

High temperature construction: wall fan is avaialble in high temeparture construction with high temperature motor and steel prop, or stainless steel prop.

Corrosion resistant construction and chemical duty construction: for corrosive environment wall fans are avaialble in 304 SS, 316 SS, or 316 L stainless steel construction. For chemical process applications wall fans are available in fiber reinforced plastic (FRP) construction, or in polypropylene construction, or in plastic.

Propeller Fans – Wall Fan Accessories

Wall fan accessories: wall housing, wall cabinet, heavy gauge housing, extended wall housing, wall housing access door, inlet guard, outlet guard, caged guard, fixed louver, shutter, manual shutter with pull chain and quadrant lock, gravity automatic shutter, motorized shutter, back draft damper, shutter motor, BELIMO motor, NEP motor, Multiproducts motor, Delay switch, Speed controller, VFD, intake hood, discharge hood, weather hood, hood bird guard, hood bird screen, insect screen.

Controls and drives: pressure switch, end switch, electrical damper motor, delay switch, pneumatic actuator, speed control, vfd control, motor starter, carbon monoxide sensor, oxygen sensor, electronic gas sensors and others.

Propeller Fans – Wall Fan Speeds

At this juncture it is prudent to reiterate that a fan running at a particular speed can have an infinite number of operating points all along its characteristic curve. The fan will interact with the system to produce an operating point at the intersection of the system curve and the fan curve. Note that it is the system in which the fan is installed that will determine the operating point on the fan curve. Thus it is vitally important that the system designer accurately determine the system losses in order to ensure that the actual air flow rate is as close as possible to the design air flow rate.

Additional information can be found at the Northern Fan web site http://northernindustrialsupplycompany.com/

Oleg Cthetchel
Canadian Industrial Ventilating Engineer

Northern Fan Co.
http://northernindustrialsupplycompany.com/

Propeller Wall and Roof Ventilators – Northern Fan

Oleg Tchetchel

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Radial Blade Blowers & Fans

Northern Industrial Supply Company radial blade blower fans

Northern Industrial Supply Company radial blade blower fans can be in single width single inlet (SWSI), or double width double inlet (DWDI). Capacities: to 500,000 CFM. Northern Industrial Supply Company radial blade blower fans (industrial radial blade blowers) are supplied in welded heavy gauge steel construction to prevent flexing at high pressure. Radial Fans are available in direct drive arrangements 4/4V/4H/7/8 and belt drive arrangements 1/3/9/9S/9T/9H. Static pressure up to 100 inches water gauge depending on the class of construction. Typical class of construction is Class 1, 2, 3, 4, 5.

Radial Blade Blowers

Aluminum wheel, Steel wheel, or Alloy wheels are available on Northern Industrial Supply Company radial blade blower fans: industrial radial blowers and fans are supplied with aluminum wheel or corten wheel to meet requirements of AMCA A, and AMCA B spark resistant construction. Mild steel wheels are of all welded construction. They are used on pressure applications, material handling applications (plastic scrap, paper trim, granular material, low density bulk material) where wheel is reinforced with support gussets, or made of abraision resistant construction, or furnished of high strenght steel. Stainless steel wheel in 304 SS, 316 SS, 316 SS, 2205 SS are supplied for corrosive applications, or high temeparature applications. The pressure curve remains stable from fully open to fully closed position.

Heat fan construction can be furnished for up to 1000 F opertation and includes high temperature paint (up to 1000 F), special alloy construction, shaft cooler, shaft-cooler guard, and steel wheel, or alloy wheel, with steel, or alloy housing.

Shaft seal and low leakage construction for demanding low-leakage applications can be furnished with shaftss straightened to close tolerance to minimize “run-out” and ensure smooth operation. Teflon shaft seal, ceramic shaft seal and lubricated shaft seals (Buna, Teflon, Viton) are standard. Red silicone gasketing is provided for low leakage construction and for high temperature construction. Heavy-duty spherical roller bearings are standard.

Cladding for sound attenuation and silencers for low-noise installations consists of 2 inches mineral-wool insulation covered with a welded steel jacket. As an inexpensive alternative is offered slide-on acoustic cloth jackets. Inlet silencer/outlet silencer are supplied with matching flanges for further attenuation of the noise level.

Standard Northern Industrial Supply Company radial blade blower fans accessories include: flash or raised access door, inspection port, drain and plug, unitary base, shaft and bearing guard, belt guard, motor cover, spring vibration isolation, rubber-in-share (RIS) vibration isolation, vibrating pads, outlet damper, inlet vane damper, external inlet vane damper, evase, electrical / pneumatic actuators.

Susan Terlitski
Canadian Industrial Process Designer

Oleg Tchetchel

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Roof Exhaust Fans and Roof Ventilators

Roof Exhaust Fans & Ventilators

Proper ventilation requires that there be a movement or circulation of the air within the space and that the temperature and humidity be maintained within a range that allows adequate evaporation of perspiration from the skin. It was formerly believed that the discomfort, headache, and lethargy commonly associated with poor ventilation were caused entirely by the increase in the amount of carbon dioxide and the decrease in the oxygen content of the air. There is evidence to show, however, that the deleterious effects result largely from interference with the heat-regulating mechanism of the body. Lack of air currents and the increase in relative humidity and temperature (especially noticeable in crowded, poorly ventilated places) prevent normal evaporation of perspiration and loss of heat from the surface of the skin.

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.

Roof Exhaust Fan Ventilation

Natural ventilation depends on winds outside and convection currents inside a building. Winds raise air pressure slightly on the windward side of a building and lower it slightly on the lee side. The pressure difference promotes circulation into the building on the windward side and out of it on the lee side. Convection currents are caused by the sinking of colder and therefore heavier air, which displaces the warmer air. A building may have a roof ventilator to allow the rising warm air to escape. If there is an opening to the outside at the bottom of the building, fresh, cool air will be drawn in.

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 Exhaust Fan Ventilator Uses

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.

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 power roof ventilators have the added advantage of providing normal day to day ventilation and in many cases can also be fitted with duct work for use in multi storey buildings.

Additional information can be found at the Northern Industrial web site http://northernindustrialsupplycompany.com/products/ilg.html.

Oleg Cthetchel
Canadian Industrial Ventilating Engineer

Roof Exhaust Fan Ventilators

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Radial Blowers

Radial Blowers and Radial Fans

Radial Blower fans are used for many purposes these days whether that be for items found in most households or in cars or factories. They play an integral part in our everyday lives and will do so for many years to come.

Northern Industrial Co. is a world wide distributor of industrial process ans OEM fans and blowers, as well as fan components; including high pressure blowers, high temperature fans, spark resistant and explosion proof ventilators, tubeaxial and vaneaxial high pressure ventilators. Canada Blower also does existing fans and blowers repairs, re-build, as well as dynamical wheels balancing.

Radial Blower Applications

A radial Blower fan is used in a large number of different industries, whether that be for the fan in your car or a fan in your computer to keep it from heating up too much. The word Radial Blower means spreading out of a common centre which is how most fans work. They can also be used in large industrial type settings where there is a need to push either cooling air or just making sure there is air flow through a certain area.

Radial Blower fans can also be known as a centrifugal fan, which is made up of three different types of blade settings. They are the straight steel plate paddle wheel, the forward multi-vane multi-blade and the backward turbo vane. They are also used in Industrial type situations such as factories, large underground carparks and gymnasiums. They can be used in lots of different situations where there are large enclosed open spaces which need some type of circulation, whether that be blowing cold air through the premises or to just have some sort of air movement. There are different types of fans, which can be put in an industrial factory such as a mounted fan or a freestanding fan. Obviously to do a large area you need a large fan so having it mounted can be a benefit whilst having it freestanding can also be a benefit because it can be moved if need be. There are also different noise levels of these fans but most fans these days are relatively quiet especially in an area such as a factory.

A radial Blower fan is used in so many different ways and usually run by using electricity although a radial Blower fan can also run off a generator. Most households have a radial Blower fan, there is generally some sort of fan found in most houses. A radial Blower fan can be just your normal portable fan or a ceiling fan is normal is most humid areas. When you do have a ceiling fan it’s important to note that most of them must be put in by an experienced electrician otherwise you could have some serious problems with them. They are certainly a lot more economical than running an air conditioner, which is why they are so popular in humid areas where having some air flow cools down the place. Radial Blower fans are also found in most air conditioning units now, they are used to blow cooled air out of the unit and into the room.

Automobiles also have radial Blower fans placed in them to keep them from overheating, this is probably the most popular use for radial fans in this day and age. They’re placed under the hood of the car to keep the motor cool and stop it from overheating. Another use for radial Blower fans is also the home computer, obviously these are a lot smaller than most radial Blower fans but they get the job done, by stopping the computer from overheating also.

Oleg Cthetchel
Canadian air systems designer
Northern Industrial Co.

Industrial Radial Blower Fan

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fan@cogeco.ca

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