Function Of Forced Draft Fan In Boiler

A fd fan moves cooler air into the combustion zone while the id fan removes the products of combustion from that zone.

Function of forced draft fan in boiler.

As we know for a steam boiler to generate steam combustion must occur be it any fuel wood coal rice husk pet coke ldo furnace oil and for combustion to exist one of its three main requirements is the air. In this case the system is said to operate under induced draft. Id fan will take the hot flue gases from furnace via dust collector dust separation system or fume extraction system and wi. The primary difference between a forced draft and induced draft is fd fan forces outside air into the heating system whereas id fan draws flue gases from the system out into the atmosphere.

We are engaged in manufacturing exporting and supplying wide array of forced draft fans. The forced draft fan fd fan is a fundamental part of most boiler systems and is the element responsible for creating draft inside of the boiler. Offered centrifugal type fans are fabricated for a minimum discharge capacity of 20 higher than the theoretical air required at 30 excess air at mcr and head 20 higher than required. When air or flue gases are maintained above atmospheric pressure.

Forced draft fd a fan is used to force air into the boiler to provide more air for combustion. Forced draft fan fd fan in boilers. Id fan is basically mentioned here for induced draft fan and id fan is always located between dust collector and chimney. Forced draft fan is a type of a fan supplying pressurized air to a system.

Normally it is done with the help of a forced draft fan. Induced draft fan is also used to identify the combustion process used in large boilers. The fd fan provides the pressure and flow required to push air fuel and the resulting flue gases created from combustion through the boiler catalysts economizer fgr ductwork and stack. And this requirement is compensated by a forced draft fan.

Forced draft fan is used basically for providing the required quantity of hot air to the furnace for smooth and uniform combustion of fuel. Induced draft fan or id fan is used to create a vacuum or negative pressure in a system like steam boiler or thermal oil heater. A forced draft fan is typically much smaller than an induced draft fan. When air or flue gases flow under the effect of a gradually decreasing pressure below atmospheric pressure.

When mechanical ventilation is supplied to these boilers the heat transfer rate increases.