31. Ventilation with Exhaust Ventilators
November 16, 2011
Ventilation fans are classified into various types, mainly depending on the type of mount and the location where you need to install the fans. The different types are:
1. Ceiling Mounted Exhaust Fans: As the name suggests, ceiling exhaust fans are those which are installed in the ceiling. Su...
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32. Building Ventilation
November 10, 2011
The heating ventilation and air conditioning system should be designed to keep occupants comfortable and healthy by controlling the amount of outside air that is added to the building atmosphere, filtering both incoming and recirculated air to remove particulates and controlling the temperature. The...
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33. Explosion Proof Ventilators
November 08, 2011
Hazardous location air exhaust / ventilation fan (sometimes called explosion proof) 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 ign...
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34. Side Channel Regenerative Blowers
November 02, 2011
Side 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 pulsation fre...
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35. Inline Duct Fans
October 31, 2011
The fan efficiency is directly contingent upon selection of fan and the operating point relevant to the system resistance.
Fan efficiency is defined as the ratio of air power (output) to shaft power requirement (input). An optimally designed fan impeller with improved aerodynamics requires l...
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36. How to Select Fan for Building Ventilation
October 20, 2011
With all fan systems, it is important to remember that only available air can be exhausted. Fans cannot operate in a vacuum. If the exhausted air cannot be replaced in the facility, fan performance will drop off and production will suffer. The production facility must have makeup air for every cubic...
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37. Roof Fan Ventilators
October 19, 2011
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 ad...
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38. Aluminum Regenerative Blowers
October 05, 2011
There are four power source choices for regenerative blowers: DC power, AC single-phase, AC three-phase, and engine. Features for regenerative blowers include: control panels and pressure or vacuum gauges. Most control panels include adjustment controls instead of a simple, regulator knob. Regenerat...
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39. Radial Blower Fans
September 29, 2011
A Radial fan is used for so 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.
Radial fan can be applied in so many different ways and usually run by usin...
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Author: Oleg Tchetchel
