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Here's the recent articles submitted by Oleg Tchechel

Articles By Oleg Tchechel

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High Temperature Axial Fans For Moving Hot Air   By: Oleg Tchechel
The axial blade wheel is usually specified where there is a need for very large volumes of flows against low static pressure. Axial wheel like the multi-blade forward curve type wheel could cause an axial fan to deliver different air volumes at the same static pressure, if the total pressure requirement of the fan system was underestimated. This type of fan is ideally suited where a large volume of flow is required with a minimum of duct work and is used extensively for small and large furnaces.(read entire article)
View : 61 Times
Category : Technology, Gadget and Science

High Temperature Ventilator And Blower For Up To 2,200 F Operation   By: Oleg Tchechel
There are 2 major types of high temperature fans - centrifugal and axial: Centrifugal Wheels: * Multiblade forward curve wheel. This type of wheel is usually specified where there is a necessity for large volumes of flow against low to medium static pressure requirements. The forward curve blade is that it delivers the same volume of air as either the backward or radial blade wheel, at a lower fan speed, which is important due to wheel stresses at elevated temperatures. This fan is the most common type used in all types of heat treatment operations except where a buildup of material on the blades could occur, as wheel unbalance would result. * Radial Blade, paddle wheel type fans. This type of wheel is usually specified where there is a necessity for medium volumes of flow against medium to large static pressures. The paddle wheel is considered a self cleaning type of wheel. It could be used where there are various materials or dust in the air stream. Due to its structurally strong design, it is used in many heat treatment applications at very high temperatures where maximum fan longevity is desired. Axial Blade Wheels: * The axial blade wheel is usually specified where there is a need for very large volumes of flows against low static pressure. Axial wheel like the multi-blade forward curve type wheel could cause an axial fan to deliver different air volumes at the same static pressure, if the total pressure requirement of the fan system was underestimated. This type of fan is ideally suited where a large volume of flow is required with a minimum of duct work and is used extensively for small and large furnaces, such as aluminum annealing.(read entire article)
View : 56 Times
Category : Technology, Gadget and Science

Industrial Centrifugal Blowers And Inline Fans   By: Oleg Tchechel
Airfoil Blowers 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.(read entire article)
View : 50 Times
Category : Automobiles

Industrial High Pressure Ventilators   By: Oleg Tchechel
ACME Fan Co. distributes new style of Low Profile Positive Pressure Ventilators that have been designed to fit in tight compartments ans small spaces without scarificing performance or features. These compact ventilation blowers are available is both gasoline driven conviguration and with 115/230V single phase electric motor.(read entire article)
View : 92 Times
Category : Business

Industrial Process Blowers And Fans   By: Oleg Tchechel
Hydrogen Sulfide H2S is a major contaminant - a source of sulfur. In high concentrations it can be lethal. It occurs in natural gas, oil, volcanic emissions, and some mineral springs. In oil rfining processes its presence is undesirable, and it must be removed. The Clause process is one of the methods used to remove the hydrogene sulphide, and while doing so, recover elementar sulfur.(read entire article)
View : 14 Times
Category : General

Inline Axial Blower   By: Oleg Tchechel
Wheel blades in axial fan blower is used where precise control of static pressure within supply ducts is required. The fan wheel will spin at a constant RPM . The blades follow the control pitch hub. As the hub moves toward the rotor the blades increase their angle of attack and an increase in flow results.(read entire article)
View : 55 Times
Category : Education

Inline Frp Ventilators And Fans   By: Oleg Tchechel
Fiberglass ventilators and blowers offer certain critical advantages as mentioned hereunder: - Optimal aerodynamic design of fan impellers to provide higher efficiency for any specific application. - Reduction in overall weight of the fan, thereby extending the life of mechanical drive systems. - Require lower drive motor rating and light duty bearing system.(read entire article)
View : 50 Times
Category : Shopping/Product Reviews

Level Three Industrial Fans   By: Oleg Tchechel
In axial flow ventilator the air must blow in line with the axis of rotation and there must be blades with space between them. With few exceptions, the axial blower or fan must not have a lot of back pressure and will work a lot better if the blade is shrouded. One obvious exception is the turbine compressor used in jet engines, but this requires very tight fittings and very high speed so the air is being rammed in against the outgoing air much faster than it can move - it uses a lot of power and makes a lot of noise. Shrouding works better because the greatest loss in an unshrouded fan is the air coming off near the tips and immediately turning out and back circulating only through the fan and not through the room. The most common shrouded fan people see is muffin style fan in computers. An axial blower can have multiple sets of blades and the blades can even over lap so light is not visible through the fan. Fans are used most often for moving large quantities of air between spaces at atmospheric pressure.(read entire article)
View : 47 Times
Category : Business

Make-up Air System - Tube Ventilator   By: Oleg Tchechel
When exhaust fans are used to provide ventilation, both for industrial and process exhaust and personnel comfort, a negative air pressure is created within the building. This negative pressure causes several problems: - Process exhaust systems are less efficient and may not work properly. - Down flow can occur through gravity vents and result in the back venting of products of combustionfrom flues and stacks of heaters and process equipment. - Drafts are created that are a dsicomfort to employees. Safe operating of outside doors may even be impaired.(read entire article)
View : 61 Times
Category : General

Mix Flow Ventilators For High Pressure Air Moving   By: Oleg Tchechel
High pressure MVA series mixed flow in-line ventilators finally resolves the problem of pushing air through high resistance and long ventilation ducts.(read entire article)
View : 64 Times
Category : Others

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