Function Of Forced Draft Fan In Boiler

Forced draft fan is a type of a fan supplying pressurized air to a system.

Function of forced draft fan in boiler.

Normally it is done with the help of a forced draft fan. 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. 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. In this case the system is said to operate under induced draft.

In the case of a steam boiler assembly this fan is of great importance as we know for a steam boiler to generate steam. Induced draft fan is also used to identify the combustion process used in large boilers. A forced draft fan is typically much smaller than an induced draft fan. Forced draft fd a fan is used to force air into the boiler to provide more air for combustion.

When mechanical ventilation is supplied to these boilers the heat transfer rate increases. A fd fan moves cooler air into the combustion zone while the id fan removes the products of combustion from that zone. We are engaged in manufacturing exporting and supplying wide array of forced draft fans. Id fan is basically mentioned here for induced draft fan and id fan is always located between dust collector and chimney.

When air or flue gases flow under the effect of a gradually decreasing pressure below atmospheric pressure. Forced draft fan fd fan in 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. Id fan will take the hot flue gases from furnace via dust collector dust separation system or fume extraction system and wi.

Forced draft fan is used basically for providing the required quantity of hot air to the furnace for smooth and uniform combustion of fuel. When air or flue gases are maintained above atmospheric pressure. 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. 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.

Draught fans are a type of industrial process fans and are broadly divided into two types forced draft fd fan and induced draft id fan.