We provide Turnkey project solution including Engineering Design", supply, installation, servicing, commissioning of Heating, ventilation, cooling and pollution Scontrol systems, For marines, steel plant and manufacturing industries.
VAYUVENTS PVT. LTD.

VAYUVENTS PVT. LTD.
Centrifugal Blower - FAQ
1) What is the difference between ID fan and FD fan ?
The key difference between a forced draft and an induced draft fan is, FD fan forces outside air into the heating system whereas an ID fan draws flue gases from the system out into the atmosphere
2) What is a forced draft fan ?
Fans that are used to pressurize a space or create mechanical air pressure in a system are referred to as forced draft fans. Occasionally, manufacturing spaces are required by specifications to be maintained at a specific positive pressure.
3) How does an induced draft fan work ?
Forced-draft fans focus the pressure and volume at the outlet of the fan to push air through a system, creating positive air pressure. Industrial-induced draft fans operate by focusing the pressure and volume at the inlet of the fan to pull air through a system.
4) Which fan is used in high temperature ?
High-Temperature Centrifugal Fans for Industrial Applications. High-temperature process airstreams are conveyed using specially designed high-temperature centrifugal fans that can handle temperatures of up to 1800 degrees F. Many industrial processes rely on high-temperature process heat.
5) How centrifugal fan works ?
A centrifugal blower is a motor or pump that propels air, and it moves the air inside the blower, and at a 90-degree angle, it pushes it out. The two chief elements of this blower are the motor and the impeller. The impeller pulls out the air in contradiction to a propeller which forces the air.
6) Why do we use centrifugal blower ?
The centrifugal blowers are used in industries where there is a requirement for larger volumes of airflow with high pressure. They are highly useful in industrial processes like conveying material in dust collector systems, combustion air for burners, drying and cooling, general ventilation, and circulation of air.
7) What determines the minimum horsepower requirement for vayuvents centrifugal and industrial fans ?
Minimum horsepower for centrifugal and industrial fans is based on either the operating brake horsepower or the minimum starting horsepower of the fan. Operating brake horsepower is an obvious limit to the minimum motor horsepower, since the motor horsepower must exceed the operating brake horsepower for the fan to work. Minimum starting horsepower is based solely on the horsepower required to get the fan wheels rotating.
8) What is the max flow and pressure that a vayuvents blower can produce ?
By utilizing a unique belt drive system that increases the blower speed by more than 5 times faster than the motor speed, we can produce pressures of up to 100” W.C. (slightly over 3.5 PSIG) and flows of up to 1500 CFM.
9) What is the difference between Backward and forward curved fans ?
The forward curved impeller is therefore much quieter than the backward curved impeller and, due to the higher number of blades, gives a noise spectrum with much wider bandwidth and therefore lower energy in any part of the spectrum when compared to the backward curved impeller.
10) Why Backward curved blades are used ?
The benefit of using a backward curved motorized impeller is that it does not have a stall point on its characteristic. This means that there is no point on the fan characteristic curve that it should not be operated.

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