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Here's the recent articles submitted by Oleg Tchetchel

Articles By Oleg Tchetchel

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High Temperature Exhaust Ventilator   By: Oleg Tchetchel
Exhaust fans can be grouped into two general categories: emergency smoke evacuation and process ventilation. Generally speaking, emergency smoke evacuation fans may never be used, but they must be installed and be capable of exhausting high temperature air and smoke in the event of a fire. In contrast, high temperature process ventilation requires continuous duty exhaust of high temperature air, fumes or particulate. Both application types are uniquely different requiring special construction and system design considerations. In this article, we will examine both types of exhaust applications, looking first at the emergency smoke exhaust category. Since emergency smoke exhaust deals with lifesafety issues, there are governing bodies in place that identify and regulate specific design and performance standards. The administration and organization of the various governing bodies is subject to modification based on the needs of the industry. Currently, four such agencies are Industrial Risk Insurers (IRI), Southern Building Code Congress International, Inc (SBCCI), the National Fire Protection Association (NFPA), and Underwriters Laboratories, Inc. (UL). IRI insures properties all over the world based on an informational manual, which details the construction requirements that belt drive emergency heat and smoke exhausters must meet in order to be covered by IRI.(read entire article)
View : 51 Times
Category : Business

High Temperature Ventilators Fans   By: Oleg Tchetchel
Inline fans inherently have drive components in the airstream. In such cases, the unit can sometimes be designed so that cooler outside air is drawn over the drive components, providing some additional cooling. Incorporating this type of external cooling is one of the main reasons Northern Fan medium pressure tube axial inline fan (TBI) can be used for high temperature exhaust applications.(read entire article)
View : 68 Times
Category : Others

How To Increase Fan Performances   By: Oleg Tchetchel
Visual inspections of the ventilation system often reveal some easily rectified problems that can significantly impair performance. If the system has not been properly maintained, clogged filters or obstructed coils will reduce airflow. The greater the obstruction, the greater the loss in airflow. Any leaks in the ductwork will contribute to reduced performance, especially leaks around plenum bulkheads that can lead to recirculation of air. Worn flexible connectors are a common source of leaks and should be inspected regularly. If the damper linkage is out of adjustment, the damper may not be opening completely, thereby reducing performance. If inlet dampers are used, make sure they are installed so that the air is pre-spun in the same direction as wheel rotation. For all dampers, make sure there is sufficient clearance for the blades to open and close completely without hitting the ductwork or other system components. Last, for systems with either pneumatic or electric controls, make sure damper actuators are operating properly. Sharp changes in the direction of airflow at either the fan inlet or outlet will disrupt the flow through the fan and impair performance. If it is impossible to straighten the ductwork entering and leaving the fan, the use of inlet boxes and turning vanes can minimize performance losses.(read entire article)
View : 111 Times
Category : Others

Industrial Air Fume Scrubber   By: Oleg Tchetchel
Air scrubbers are applied where removal of fine particulate from corrosive, hazardous or volatile gas streams is required. Venturi scrubbers wash dust and particles out of the air by forcing the air into a spray chamber, where fine water particles cause the dust to drop from the air stream. Where applied, venturi scrubber technology is able to achieve the highest particulate collection efficiency of any wet scrubbing system.(read entire article)
View : 46 Times
Category : General

Industrial Centrifugal Blower   By: Oleg Tchetchel
The recycling industry has diversified and matured in recent decades, resulting in its greater demand for high quality air moving equipment. Northern Fans and blowers are used for delivering the proper air performance for many recycling operations such as material handling and sorting, pneumatic conveying, heating, cooling, aerating, dust collection, and general HVAC. Once sorted, recycling is very similar to the manufacturing of original materials. Glass and metal are crushed, melted down, and purified, then remanufactured into such items as bottles, cans, countertops, and even concrete aggregate. Paper and cardboard are treated in chemical solutions and heated to recover the organic wood fibers to produce new product.With the broadest product range in our industry, Northern Fan can supply the equipment needed for the recycle industry's many air moving applications. Our high quality and reliable fans and blowers will do the jobs - from transporting strands of shredded paper to providing circulation in glass ovens. Water treatment involves the removal of contaminants from waste water, sewage, and runoff. The various processes remove physical, chemical, and biological contaminants. These processes are known to be some of the most demanding applications for equipment and that is why water treatment facilities around the world rely on Northern Fan. It manufactures a variety of centrifugal and axial fans and blowers with special coatings and special materials such as stainless steel, fiberglass, and carbon fiber to withstand these corrosive environments.(read entire article)
View : 83 Times
Category : General

Industrial Fiberglass Blower   By: Oleg Tchetchel
A comparison of the corrosion resistance and economics of fans made of various materials leads to these generalizations. Coated steel fans vary greatly in the degree of corrosion protection provided and cost. Costs for coated fans run from about one-third that of FRP fans for the least chemicl resistant coated steel fans to about half the cost for the baked phenoliccoated fans. Coated fans, regardless of the inherent corrosion resistance of the coating, have the potential of coating failure and resultant rapid deterioration of the base metal. Failures occur when coatings are physically damaged, and when corrosive attack permeates the coating to attack the metal. Stainless steel is susceptible to attack by chlorides and resultant physical failure by stress cracking. Residential hot water heaters are never made of stainless steel because the combination of small amounts of chlorine in the water, modest temperatures, and the stresses caused by changes in water pressure results in rapid failure of the stainless steel. Stainless steel is also much more susceptible to corrosive attack by most acids than is FRP.(read entire article)
View : 45 Times
Category : Others

Industrial Frp Air Scrubber    Submitted in different name as: airknife@cogeco.ca
FRP fume scrubbers are applied where removal of fine particulate from corrosive, hazardous or volatile gas streams is required. Venturi scrubbers wash dust and particles out of the air by forcing the air into a spray chamber, where fine water particles cause the dust to drop from the air stream. Where applied, venturi scrubber technology is able to achieve the highest particulate collection efficiency of any wet scrubbing system.(read entire article)
View : 55 Times
Category : Health

Industrial Process And Commercial Fan   By: Oleg Tchetchel
Fans play an important role in a number of industrial processes, all of which require the right performance to maintain optimal operating conditions. Northern Fan extensive engineering and manufacturing capacities have allowed Northern Fan to offer a complete line of fans for industrial applications, from standard pressure blowers to heavy duty custom engineered mechanical draft fans. Northern Fan's equipment delivers the air for heating & cooling, ventilation, dust collection.(read entire article)
View : 89 Times
Category : Others

Industrial Processes Ventilating   By: Oleg Tchetchel
Aeration involves moving air through either a solid or fluid medium bed and is used for various purposes. Depending on specific material being aerated, our fans are utilized for moisture control in applications such as grain bin storage, and also provide oxygen and control moisture/temperature in composting applications. Due to varying environmental conditions, fans used in aeration systems often require special construction such as fiberglass, alloys and specialty coatings.(read entire article)
View : 73 Times
Category : Writing

Kitchen Exhaust Fan Ventilator   By: Oleg Tchetchel
NFPA 96 Ventilation Standard provides the minimum fire safety requirements related to the design, installation, operation, inspection, and maintenance of all public and private cooking operations except for single family residential usage. The requirements include, but are not limited to, all manner of cooking equipment, exhaust hoods, grease removal devices, exhaust ductwork, exhaust fans, dampers, fire extinguishing equipment and all other components or systems that are involved in the capture, containment and control of grease-laden cooking residue.(read entire article)
View : 114 Times
Category : Beauty

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