Forward Curve Blower – NIS-CO Blog

Regenerative Channel Blowers

Regenerative Blowers deliver up to 1,300 SCFM of uncontaminated flow at up to 8 PSIG pressure, and from 30” to 0” Hg vacuum. Typical applications include air conveying, refuse burning, instrument air, air dryer, air cushioning, tank agitation, sewage aeration, blister packing, liquid spraying, fuel atomizing, air knives, product curing, radon gas elimination, automatic bottling, vacuum holding, soil remediation, paper transport, scrap collection, powder recovery, gas sampling, thread holding, and all applications requiring medium pressure, or vacuum.

Side Channel Blowers

Side Channel Blowers are available with cast aluminum casing enclosing cast aluminum rotors. NPT threaded flange connection 1”, 1.5”, 2”, 2.5”, 3” and 4”, as well as metric threaded flange of type G are standard. Shaft sealing is provided by C-flange motor mount, or by sealed bearings.

Channel Blower Packages

Channel Blower Packages are supplied on unitary base of standard or isolation type with RIS, or spring vibration isolators. Power transmission is implemented by V-Belt Drives complete with V-belts, adjustable or constant speed sheaves and pulleys, bushings, and motor slide bases; or by direct drive coupling. Motors are of High Efficiency design. OSHA Belt Guard and OSHA Coupling Guard are standard.

Expansion Joints, Flexible Connectors and Compression Couplings isolate Regenerative Blower to allow for thermal expansion and mis-alignment of piping.

Pressure / Vacuum Relief Safety Valves of VLR type are of spring loaded type kunkle valve. They set-up point of operation and bleed-off to prevent over-pressurization, or relief vacuum.

Inline Check Valves direct airflow or vacuum in one direction only. Flow Converters change direction of the flow by electronically, or pneumatically activated diverter.

Pressure / Vacuum Controls include differential pressure gauge up to 15 PSIG, vacuum gauge from 30” to 0” Hg, temperature gauge, gauge snubber to reduce pressure pulsation, and .25” pet-cock valve to isolate the gauge.

Regenerative Silencers are offered as inlet and discharge silencers with sound absorbing polyurethane elements. Additional auxiliary inlet and outlet silencers offer additional means of sound attenuation. Sound Enclosures are custom made based on application requirements.

Inlet Filters are offered with wire-mesh oil wetted (multi-wash), high efficiency ultra-synthetic (polyester, washable), or paper (thrown away) media. Controls included Differential Filter Pressure Gauge used as Filter Restriction Indicator. Filter casing is available as open flange design, hooded design, or combined filter-silencer assembly. In-line filters are custom.

Controls and drives options for side channel blowers include: variable frequency drives (VFD), motor starters, are available in NEMA 1, NEMA 3R, NEMA 4 enclosure, as well as for x-proof applications.

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

Susan Terlitski
Ventilation Equipment Designer
canadablower@canadablower.com
Canada Blower
http://www.canadablower.com/index.html
http://www.canadablower.com/oem/index.html

Channel Type Blower

canadablower@canadablower.com

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Industrial Air Curtains

The idea of having an invisible barrier across the doorway to enable unimpeded access yet effectively prevent temperature flow, dust, odours and insects to cross, is appealing in itself but add to this the cost-saving in reducing energy use and the idea becomes more compelling, especially as air curtains are relatively inexpensive items.

Appropriate for industrial applications

Keeping warm air out of insulated cold stores or refrigerated facilities is the Number 1 objective yet a mockery is made of this premise when freezer of chiller doors are left wide open and, in some cases, chocked open to facilitate the movement or storage of perishables.

Self-generated pressure evolves from a non-circulatory type of air curtain as the jet induces ambient air into the stream. When the air curtain is installed on the outside of a cold room, the air spills back into the room and continues to do so until the pressure builds up to such a point that the air stream deflects to the outside.

Pressure Form Stack

The pressure-form-stack effect evolves when the cold air in the room is denser than the warmer outside air. The higher the ceiling, the higher the pressure becomes inside the cold room. The velocity of the air curtain should therefore be high enough to compensate for the outward pressure at the lower part of the cold room.

Wind pressures occur because of the conversion of the velocity pressure in the wind into static pressure. Of particular significance is the stability of the air curtain, which is directed by its outlet momentum. The curtain of air must be able to withstand pressure variations between the inside and the outside of the cold room. The outlet momentum should be sufficiently sustained and strong enough to stabilise the air at the floor. It is therefore essential to incorporate controls in the design of the air curtain to increase the strength of the velocity and ensure a stiff curtain of air and to decrease the velocity to prevent unnecessary heat and moisture transfer at the door.

Refrigeration Applications

In refrigeration applications, a high volume of turbulent air hitting the floor tens to form ice on the floor of freezers – this is not desirable or necessary so air flow needs to be adjusted so that it barely hits the floor. This can be accomplished by adjusting air louvers or fan speed to obtain the desired velocity. Drafts are eliminated by ensuring that air flow is vertical. The air curtain may be mounted on either the warm or cold side of the cooler with equal effectiveness.

The volume of air flow varies according to temperature difference between internal and external air and air exchange is therefore caused by thermal temperature differences. Using known values for the indoor and outdoor temperature difference, the densities, pressure differences and ultimately the air flow through the opening can be calculated.

Properly installed 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 to fast-acting roller doors and PVC slat curtains, and can be situated above or to the side of industrial doorways to create a powerful seal across the opening, keeping cold air in while providing complete visibility and access. This means that forklift drivers don’t have to get out of their cabs to open and close doors so that moving from one area to another is a lot easier and productive. Unlike plastic slat curtains, which quickly become opaque with use, an air curtain provides 100% visibility at all times. Units have been installed in loading bays, factories, hangars and production facilities, such as food processing and pharmaceuticals, where differential temperatures are encountered overseas.

Canadian Air Systems Co. is a well known designer and manufacturer of industrial and commercial air curatain systems and environmental air barriers.

For special applications Canadian Air Systems offer tangential air curtains to achieve high volume alminar air flow – to create permanent environmental air barriers.

For additional information please refer to http://nis-co.com/Index.html.

Oleg Tchetchel
Ventilation Engineer
Canadian Air Systems
http://www.nis-co.com
http://nis-co.com/aircurtain/Index.html

Air Curtains for Large Buildings Doors

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nis-co@nis-co.com

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nisco@primus.ca

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Industrial Blowers – FRP

Industrial FRP Blowers are designed for highly corrosive application to handle acid vapors, and organic and inorganic chemical fumes that are highly corrosive to metal at temperatures up to 250 F. Applications include scrubber systems, odor control systems in wastewater treatment plants, laboratory exhaust systems, metal finishing and chemical-process industries. Fiber-reinforced-plastic pressure blowers are made from chemical grade polyester or vinyl ester resins and reinforced with glass or fiber. Additional surface veil is available depending on the application. Capacity range of FRP Pressure Blowers is from 0 to 8,000 CFM and static pressure range is up to 40” WG.

Industrial Pressure Blowers

Housings of FRP Pressure Blowers are rotatable and fabricated of polyester resin based FRP , while wheels are made of vinyl ester resin FRP to allow for more strength. 316 stainless steel, or Hastelloy C276 alloy wheel and shaft assemblies are available. FRP ORB self-cleaning wheel design and FRP Pressure Blower wheel design are used depending on application. Standard shafts are made of C-1040/1045 steel covered with FRP sleeve. 316 stainless steel shafts are optional. Inlet/outlet flange drilling is according to ANSI 125/150 bolt pattern, or Voluntary Product Standard PS15-69. Neoprene gasketing with Teflon Shaft Seal, or Viton seal element in FRP casing is provided where low leakage is desired.

FRP Pressure Blower Accessories

FRP Pressure Blower Accessories include outlet flanged wafer-type damper, made of FRP; inlet vane damper in FRP construction; companion flange with collar in FRP construction; unitary base available with spring or rubber-in-shear RIS isolators ; drain and plug threaded FRP drain with PVC plug; inspection port ; surface veil provided in compliance with ASTM D 4167; all-vinyl ester airstream ; graphite impregnation to control static electricity; adjustable motor bases ; OSHA Guards and Motor weather cover; drive components ; VFD duty high efficiency motors ; and others.

Teflon Impregnated Flexible Connectors to isolate FRP pressure blower and to allow for mis-alignment of piping.

FRP Blower Silencers are offered as inlet and discharge silencers with FRP sound absorbing elements. 304, 316 stainless steel options are available as well.

Controls and drives: variable frequency drives (VFD), magnetic motor starters, are available in NEMA 1, NEMA 3R, NEMA 4 enclosure, as well as complete set of electrical components for x-proof applications.

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

Oleg Cthetchel
Industrial Air Make-Up Equipment Designer
nis@primus.ca
Northern Fan Co.
http://www.northernindustrialsupplycompany.com/burlington/request2.html
http://www.northernindustrialsupplycompany.com/burlington/request3.html

Industrial Fiberglass Blower and Fan

nis@primus.ca

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Industrial Ventilation Blower Fans

Industrial ventilation is of paramount importance to ensure the safety and well-being of employees. In industries where employees are subjected to dangerous chemicals, vapours and gasses on a daily basis, effective industrial ventilation can mean the difference between life and death. The basic concepts behind industrial ventilation are quite simple, but for it to be effective, the ventilation system needs to be installed by an experienced engineer.

Industrial Ventilation Uses

Industrial ventilation is a method of controlling employee exposure toxic chemicals, volatile airborne substances and flammable vapours by removing the contaminated air and replacing it with clean, fresh air. Used in a variety of different industries where poisonous vapours may be a problem, industrial ventilation is most often employed to remove welding and solvent vapours, oil mists and poisonous or volatile dust.

But industrial ventilation may not always be necessary. True, it should be preferable for the continued health of your employees, but regulations suggest that industrial ventilation only becomes compulsory when:

•the levels of contaminants exceed regulated levels;
•the lower explosive limit of flammable vapours is exceeded; or
•when the oxygen concentration in an area drops below 19.5%.

Industrial ventilation should also be considered before respirators. Not only is the system easier to maintain, but, in the long run, is a much more cost effective method of air purity control.

There are a number of industrial ventilation options available depending on the circumstances of your industry’s circumstances. The most basic is indoor quality ventilation that aims to provide fresh air throughout a building as part of the existing ventilation system. This option is primarily used in offices but can be effective in small industries where the concentration of contaminants is low.

Industrial Ventilation System

Easy to maintain and inexpensive to set up is dilution ventilation. This form of industrial ventilation uses large and powerful exhaust fans to extract contaminated air and to draw in clean air. It is very effective in clearing flammable vapours but is less effective for metal fumes or large concentrations of highly toxic materials. Depending on where the industry is located, the incoming air may require a lot of cooling or heating before it can be introduced into the industrial ventilation system, increasing the cost of using the system.

Dilution ventilation uses the simple principles of displacement and dilution to function. Some of the contaminated air is removed and replaced with large amounts of fresh air. The concentration of the contamination is effectively lowered, making it safer for people to work in the area.

Exhaust Ventilation

A more localised industrial ventilation system is local exhaust ventilation. This system captures the contaminations at the source and expels it before it has a chance to disperse into the air. For highly toxic contaminants or high concentrations, this industrial ventilation is probably one of the best. It does not require large amounts of fresh incoming air since the exhaust of contaminants is localised. This effective ventilation comes at a higher cost and more frequent maintenance, however.

Local exhaust ventilation works like a vacuum cleaner forcing contaminated air to move from a high concentration to a low concentration. It is perhaps one of the most effective industrial ventilation systems because it removes the contaminants at the source before it has a chance to spread.

There are effective industrial ventilation systems available for any industry. Some are simple to use, like dilution ventilation, while others are specifically made for highly toxic environments, like local exhaust ventilation. Whatever the decision, as long as the industrial ventilation keeps your employees safe from the contaminations of the substances they work with, it is doing its job.

For more information about proper building ventilation please visit the Fan and Blower company web site http://fanblower.com/high_pressure_blower_fan.htm

Susann Terlitski
Designer of Industrial Air Handling Units
Fan and Blower Co.
abbblower@abbblower.com
http://www.fanblower.com/centrifugal_fans.htm
http://www.fanblower.com/low_&_medium_pressure_blower_fan.htm

Industrial Ventilation

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Industrial Fans for Ventilation

Various industries install Ventilation Fans in their manufacturing units and factories. These Ventilation Fans are mainly used to provide a healthier breathing environment for the workers over there as well to accomplish various activities. For many areas requiring removal of fumes, smoke, dust and various impurities that can make the work environment hazardous, Industrial ventilation fans, dust, and fume extraction systems prove to be very useful.

Some Of The Industries That Heavily Require Ventilation Are:

•Pharmaceutical Industry
•Biological Industry
•Chemical Industry
•Mining Sector
•Physical Research Industry
•Processing units

The Various Applications Where Ventilation Fans Are Used:

•The Ventilation Fans are extensively used in various activities such as, fabricating, manufacturing, mining, etc. These Ventilation Fans are used for the removal of dust, fume, and smoke particles from the atmosphere and to make it free from suffocation. Some of the manufacturing units where the Ventilation Fans are used for the mass extraction of fumes and dust particles are, Textile Mills, Steel Mills, Wood product Mills, Ceramics and Aerospace material units. These units install huge turbines and impellers to move the extremely large volume of air.

•Crude Oil and Petrochemical Refineries have to deal with fuels and solvents which are extremely toxic, flammable, and unpredictable. Here, Ventilation Fans are required for the functioning of sophisticated Air Entrainment systems.

•The Mining and Quarrying industries are always immensely reliant on the Ventilation Fans. The Coal dust in these mines can be very explosive if it somehow catches fire. This risk is reduced by the dust removal, which is done by the Ventilation Fans. Very powerful blowers and bulky turbines are implemented to ventilate the mines and quarries.

•The workers in Biological, Chemical, and Pharmaceutical industries have to struggle with biological, chemical, and various other physical risks. In such environment, Ventilations Fans come to their rescue.

Industrial Ventilation System Manufacturer

Industrial Fans will always act like the tough weapons to fight against the toxic and hazardous work area of every small and large industry. The various forms of Ventilation are performed by Air Fume collection system, Robotic welding hoods, Dust collection units, Air Filters, Chemical Scrubbers, Fume containment systems, etc. Ventilation Fans Manufacturers and Suppliers nowadays offer very efficient models for individual needs of industries. Any industrial buyer just has to go online and contact the Industrial Ventilation System Manufacturer in India who can meet the needs exactly and get installation assistance as well.

Additional information can be found 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_products_std.htm
http://www.industrialfanblower.net/cbd_products_heavy.htm

Industrial Ventilation Fans

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asap@buffalofan.com

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Industrial Exhaust Fans

NIS-CO offer smoke and heat exhaust fans that are UL listed for Smoke Control Systems and a full line of kitchen fans that are UL 762 listed for the exhaust of grease-laden air. Buffalo Blower engineers design, test, and manufacture fans for all types of buildings, including condos, custom homes, offices, malls, airports, arenas, and stadiums. We are able to meet your most precise requirements for a variety of HVAC equipment, including all types of custom, package air handlers and roof top units. In addition, NIS-CO can provide exhaust for restrooms, elevator shafts, parking garages, and jet bridges; stairwell pressurization; rooftop and sidewall supply and exhaust, including smoke and heat exhaust fans that are UL listed for Smoke Control Systems, as well as kitchen fans that are UL 762 listed for the exhaust of grease-laden air.

Large Industrial Fans

NIS-CO supplies thousands of fans to universities, hospitals, laboratories and research facilities, military bases, hotels, convention centers, and cruise ships around the world; working closely with architects, engineers and contractors to design and test fans that can meet the most precise quality and reliability requirements. NIS-CO amkes smoke and heat exhaust fans that are UL listed for Smoke Control Systems, kitchen fans that are UL 762 listed for the exhaust of grease-laden air, and a full line of laboratory and fume exhaust systems. NIS-CO provides fans for numerous residential building applications, such as stairwell and elevator shaft pressurization; kitchen, restroom, and pool exhaust; and every aspect of HVAC, including air handlers, gravity ventilators, and large rooftop units.

Exhaust Fans & Supply Fans

Manufacturing facilities require a large amount of ventilation to maintain a healthy work environment for the people working within the buildings. NIS-CO designs and builds fans to control and handle the exhaust, supply, and make-up air requirements for all types of manufacturing environments and spaces. The exhaust of welding and other noxious fumes and dusts, as well as the exhaust of hot air produced from ovens and other high temperature processes, are essential to providing safe and comfortable working conditions. In many cases, the building heating, cooling, and air conditioning (HVAC) requirements are also critical for proper production control and working conditions. A wide variety of businesses, industries, medical facilities, and institutions require ultra clean environments for research and development as well as production of specialty products and equipment. These facilities demand high filtration and positive pressures inside the clean room space to control the process and limit potential contamination. Other requirements typically include variable air volume, high efficient air moving equipment, low noise, and ultra-low vibration levels from the mechanical equipment.

Buffalo Fans & Ventilators

Among many other changes, the green revolution has created a greater need for more energy efficient fans and ventilation equipment. As a leader in the fan industry, NIS-CO engineers and manufactures high efficient products for a wide variety of green friendly applications including LEED building designs, biofuel and biomass production plants, landfills, solar film manufacturing facilities, as well as numerous waste energy and heat recovery systems. Regardless of how unique or specialized your process is, Buffalo Blower can customize our products to meet virtually any requirement.

Large Industrial Blowers & Fans

NIS-CO is well known for leveraging its design and manufacturing capabilities when constructing the heavy duty fans required for marine applications. Such marine duty fans are used for many purposes including boiler combustion air, mechanical ventilation, off shore rig diesel generator exhaust disbursement, pressurization, engine cooling, and dust control. Our air moving equipment can be found on drilling rigs, production platforms, tug boats, cruise ships, ferries, and cargo ships. We offer a number of features to meet the specific needs of the marine industry. These include shortened axial fan housings for operating in tight spaces, cast aluminum impellers and hot dip galvanized steel components for extended durability, spark resistant construction for potentially explosive air streams, water tight electrical connections to withstand corrosive environments, and IEEE 45 marine duty motors for both above deck and below deck installations.

Industrial Blower Supplier

In addition to our extensive fan design and manufacturing experience, NIS-CO offer a number of products meeting requirements of the marine industry’s governing and standard organizations including:

• Air Movement and Control Association (AMCA) – Spark Resistant Construction
• American Bureau of Shipping (ABS) – Type Approval for Ventilation and Non-Sparking services
• Appareils destinés à être utilisés en ATmosphères Explosives (ATEX) – Equipment Directive 94/9/EC

Additional information can be found at the NIS-CO company web site http://www.canadablower.com/fans/index.html

Susan Terlitski
Canadian Ventilating Engineer
canadablower@canadablower.com
NIS-CO
http://www.canadablower.com/blowers/index.html
http://www.canadablower.com/inquiry/index.html

Commercial Ventilators Fans

canadablower@canadablower.com

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buffaloblowercom

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Positive Pressure Ventilation with Industrial Blower Fans

Positive pressure ventilation ensures blowing things like debris and particles that would be harmful if humans breathed into their lungs out of the area where the humans are. Positive pressure ventilation also refers to medical procedures and devices that actually breathe for people who have experienced trauma and need to be on a ventilator system. For the purpose of this article we will be speaking of positive pressure ventilation in the capacity to remove unwanted contaminants from the air in a structure so that the remaining air is left breathable by all concerned.

Large Industrial Fans

Large fans are used in this ventilation type to push the particles from one area of a structure into another area of the same structure. This is successful because air that is in a high pressure area will automatically attempt to travel to a low pressure area. The fans can cause fire and debris to move from the high pressure area to an established exhaust point where it can be safely removed from the environment.

These systems are not frequently spoken of in most social circles. This is more than likely why you are unfamiliar with the term positive pressure ventilation. Large industrial companies have to use these methods of cleansing and purifying the air so that their employees can safely work in their factories.

Exhaust Fan Systems

Many things that are created cause harmful fumes, gases, and particles to enter the air where they are being manufactured. Exhaust systems and fans are used to push the harmful particles from the room and into areas where it can be contained or where it will cause no danger to any living thing.

Schools and residential homes do not require this type of ventilation, it is primarily used in factories, and manufacturing companies that create chemicals, use chemicals, or create something that causes toxic fumes to occur.

There are some places that only need this type of ventilation system in a small portion of their structure. Some of them only need these systems in one room of their buildings. It is possible to buy the correct components to clean the air in these areas without installing the same type of system throughout the structure.

Most of the modern systems that do this have units mounted in the loft space above the rooms. Some of them have units installed in specifically designed cupboards that house them. Series of ducts connect the units and the individual areas within the structure.

You can have decentralized mechanical extract systems incorporated into your building system design so that certain rooms have a continuous extraction rate that can ultimately be increased or decreased from one remote control panel.

This allows contaminated air from wet rooms and areas like these to be removed and replaced with filtered air that has been tempered and rendered perfect. Each building has unique specifications and must have their systems custom designed and installed in order for the air in all areas to be rendered clean and breathable.

For more information about proper building ventilation please visit the ABB Blower company web site http://fanblower.com/dust_collector_unit.htm

Susann Terlitski
Designer of Industrial Air Handling Units
Fan and Blower Co.
abbblower@abbblower.com
http://www.fanblower.com/dust_collector_unit.htm
http://www.fanblower.com/air_curtain.htm

Positive Pressure Ventilation

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abbblower@abbblower.com

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Industrial Propeller Fans and Industrial Blowers

Electrical generators require the most reliable equipment for their air-cooling and ventilation needs. The fans used in these 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.

Resilient Industrial Blowers

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.

High Performance Fans & Blowers

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 Buffalo Fan provided to a state-of-the-art hybrid energy center, were ideal for the task. Aerovent 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.

Propeller Fans

Northern Fan 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. ABuffalo 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.

Industrial Blower Safety

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.

Custom Industrial Fan Design

Northern Fan’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.

Northern Fan Co. custom made damper features a fusible linkage arm with a “soft metal” section in the link. When temperatures reach 212 degrees (as in the case of a fire), the soft metal plate fails, breaking the linkage, and a heavy counter weight swings the damper into the “open” position.

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

Oleg Tchetchel
Industrial Air Handling Systems Engineer
Northern Fan Co.
nis@primus.ca
http://www.northernindustrialsupplycompany.com/products/heat_exchangers.html
http://northernindustrialsupplycompany.com/products/humidifiers.html

Turbo Pressure Blower

nis@primus.ca

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buffalofancom

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Industrial Blowers, Fans and Ventilation

In almost any building or room used for commercial and industrial operations, it is quite likely that there are recurrent conditions that cause personnel discomfort. This is particularly true unless an expensive system for the circulation of refrigerated air (air conditioning) has been provided. In mild to hot weather, the discomfort of individuals is generally due to the build-up of intense heat within the structure. This becomes a severe problem in summer because the sun load on the building is added to the normal sources of heat build-up within the building. Most buildings have sufficient ventilation to remove smoke and fumes detrimental to health. However, it is unlikely that that system contributes very much toward the comfort of the individuals who occupy the mom or building.

Industrial Blowers and Fans for Ventilation

Humans are warm blooded animals whose normal body temperature is 98.6° Fahrenheit. However, we are most comfortable when the air temperature around us is in the 72°-to-78° range. If there is air motion around us, the effect of “wind chill”, or evaporative cooling, enables us to feel comfortable in a much higher air temperature. As the natural air temperature in most non-air conditioned buildings is much warmer than outside air temperatures, the problem of keeping humans comfortable is primarily a cooling problem. Of course, this is not the case in periods of very cold weather. Our purpose is to discuss the environmental problems that frequently exist in periods of moderate to hot weather. An effective, economical solution of these problems is vital to the success of any business.

Proper Industrial Fan Ventilation

If an individual is to produce maximum results, he must be allowed to function in an environment as nearly ideal as can be provided. In fact, the benefits in terms of efficiency and productivity can be substantial. Failure to provide a comfortable environment can be very expensive in terms of errors, work slow-down, complaints, absenteeism, etc. If the major factor is a hot, humid atmosphere, which may include smoke, dust, fumes or other irritants, a practical and effective approach to the problem is available. 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 cooling system of a commercial or industrial building.

How to Remove Superheated Air Using Industrial Blowers & Fans

When the air temperature in the occupied area of a room or building exceeds 78° to 82°; most individuals begin to feel uncomfortably warm. The first step toward controlling the problem is to provide for the removal of excessively hot air from the building. This superheated air frequently mixes with the air in cooler areas of the building to produce an overall temperature increase. As superheated air is frequently localized around heat-producing machinery, it should be exhausted from the building near its source. This will prevent some undesirable air temperature increase in other areas. As a rule, outside air temperatures are considerably cooler than those inside a building. As superheated air is exhausted, provision should be made to replace it with fresh, cooler, outside air. Exhaust air in many areas of a building may have a temperature of 125° to 150°. This is usually the case where heat-producing machinery is in use. Similar air temperatures frequently occur near the roof or ceiling where rising warm air is trapped and further heated by the sun load on the roof. When this high temperature air is replaced by outside air, a substantial improvement in the average air temperature of the building results. Even where outside air temperature may be in the 80s or 90s, invariably it is 15° to 20° cooler than the air it replaces. This is a very important improvement to the individuals affected.

Industrial Blower Fan “Breeze Conditioning”

A very effective way to overcome the discomfort of a hot, stuffy room is to create a breeze. Before refrigerated air systems were invented, mechanical fans of every description were used to provide air circulation. The circulation of air over a person’s body immediately causes a cooling effect on the skin. When air is passed over a moist surface, it will evaporate some of the moisture and thus lower the temperature of the surface. This is precisely what occurs when air circulates across the human body.

By creating a gentle breeze throughout a room or area, a great deal of cooling comfort is provided for individuals who must work there. This pattern of air circulation is called “breeze conditioning” by Canada Blower engineers. It is effective even when the air temperature may be 85°’ to 95°. When this air circulation is achieved in combination with the factors mentioned in the paragraphs above, a very effective and practical solution is provided for the problem of personnel discomfort in hot weather.

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

Susan Terlitski
Industrial Process Engineer
canadablower@canadablower.com
Canada Blower
http://www.canadablower.com/hvac/index.html
http://www.canadablower.com/oem/index.html

Commercial Building Ventilating

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Industrial Fans and Blowers vs Commercial Fans & Blowers

There is a difference between industrial and commercial grade fans construction. Industrial equipment is specifically designed and built to stand up to the rigors of an industrial application. The differences are concrete and easy to spot…if you know what to look for. Canada Blower designs and builds equipment strictly for industrial applications and has been doing it that way for over 100 years. Industrial fans and blowers are constructed of heavier duty materials and with higher quality components than their commercial counterparts. When properly applied, industrial equipment can withstand vibration, high and low temperatures, fumes and corrosive gases, materials in the airstream, and many other situations in an industrial environment. The equipment is built to provide longer service life, thus decreasing the need and frequency for replacements. Because industrial fans are expected to last longer, they are designed to be easy to install and maintain.

Industrial Blower Fan Features vs Commercial Blowers Fans

The best way to see the difference between an industrial product and a commercial product is to compare them feature for feature, including product weights. In the below example we’ll look at commercial panel fans versus Canada Blower industrial panel fans. The commercial grade panel fan has sheet metal, riveted blades, and a riveted hub. Canada Blower industrial panel fans have a solid, one-piece cast aluminum airfoil propeller or a cast aluminum adjustable pitch propeller. Lighter fans sometimes have balance weights clipped, bolted, or welded to the back of the fan blades, which can fly off during operation. Canada Blower cast aluminum propellers are precision ground and balanced, and therefore require no balance weights.

Industrial Fan Aerodynamic Design

Another difference between the commercial and industrial fan is in the aerodynamic design. Canada Blower originally developed the air seal venturi to improve performance. With this design, the propeller is larger in diameter than the venturi opening, thus creating an air seal. This design eliminates back flow of air pressure and increases air delivery by 10% or more. The way most other panel fans are designed, the propeller is smaller than the venturi opening. This type of fan is easier to manufacture, but significantly less efficient. The basket fan provides even less value because of the air that is lost around the sides of the fan. A Canada Blower venturi design fan pushes the air velocity from the blades out the front of the fan for increased spread and throw versus a commercial type fan.

Industrial Fans for Shipment

There are also installation differences to consider when purchasing a panel fan. Many commercial fans are shipped in parts. The motor and accessories may be shipped loose and must be assembled to the fan when received. In addition the commercial fan shown on the previous page has no provision for panel mounting or for accessory mounting. This means holes for bolts and mounting hardware must be drilled even before it can be completely assembled or installed. Canada Blower panel fans are shipped completely assembled and ready to install. A large selection of industrial fans are available from the stock program for quick shipment, including panel fan ventilators. You can be sure that Canada Blower equipment will provide many years of continuous service in your industrial air moving environment !

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

Susan Terlitski
Building Ventilation Specialist
Canada Blower Co.
http://www.canadablower.com/fans/index.html
http://www.canadablower.com/inquiry/index.html

Commercial vs. Industrial Fan

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