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| Articles by Oleg Tchetchel |
1. Exhaust and Supply Fans for Building Ventilation
October 24, 2013
Blowers and fans can be used for complete ventilation of your bilding including intermittent local ventilation for baths, kitchens, dryer rooms; continuous whole building ventilation, and for exhausting hard-to-air spaces such as crawl spaces, attics, and basements.
An exhaust fan is a mecha...
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2. Suggestion for Building Ventilating
October 24, 2013
Normally the recommended methods of plants ventilation and cooling are:
* Exhaust fans or Power Roof Ventilators (PRVs).
To do a satisfactory job of eliminating excessively hot air, it is usually essential to have powered wall and/or roof exhausters. These fans should also help to ...
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3. Work Standards for Ventilation
October 22, 2013
A sufficient amount of air to dilute building contaminants and maintain a healthy environment is 20 cubic feet of outside air per minute/per person for an office environment according to ASHRAE. Indoor air quality complaints increase significantly in offices that are not supplied sufficient outside ...
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4. Vaneaxial Fans for Ventilation
October 21, 2013
Vent ducts in contemporary large houses becomes so long and elaborated that even a high pressure furnace fan couldn't generate enough static pressure to blow through the whole length of such a duct. The existing low pressure booster duct fans, even though compact enough to be installed in-line in th...
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5. Chemical Duty Blowers and Fans
October 17, 2013
In high concentrations Hydrogen Sulfide can be lethal. It occurs in natural gas, oil, volcanic emissions, and some mineral springs. In oil refining 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...
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6. Spark Resistant Ventilator Fan
October 16, 2013
Spark resistant explosion proof ventilator may be required in any area where the presence of flammable gases, vapors or finely pulverized dust in the atmosphere is sufficient to create a threat of an explosion or fire. It may also be required where easily ignitable fibers or flying's are present. Th...
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7. High Pressure Regenerative Blower
October 09, 2013
High pressure channel blowers are oilless and have no complicated intake / exhaust valving. Most can be mounted in any plane and, with dynamically balanced impellers, generate little vibration. Because they are nonpositive displacement compressor/vacuum pumps, they discharge air that is clean and pu...
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8. Industrial Blowers for process Ventilation
August 18, 2013
One advatange for series operation is the likehood of initial cost savings - it is often more economical to select two "smaller" blowers with their respectice smaller motors and drives than to select one "larger" blower to do the job.
Series connected blowers are those which have the outlet ...
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9. Inline Ventilator Fans
August 17, 2013
Axial ventilators are widely used for providing the required airflow for heat & mass transfer operations in various industrial equipment and processes. These include cooling towers for air-conditioning & ventilation, humidifiers in textile mills, air-heat exchangers for various chemical processes, v...
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10. Ventilator for Industrial Building
August 17, 2013
A duct vaneaxial fan offers a broad performance range and good pressure capability at high static efficiency. It also offers the benefit of placing the bearings, shaft and drives on the negative pressure side of the propeller. This setup draws ambient air across those components during operation and...
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Author: Oleg Tchetchel
