IMPLEMENTATION OF ID-FD FANS IN THE INDUSTRIAL MANUFACTURING SECTOR
                     IMPLEMENTATION OF ID-FD FANS IN THE 
INDUSTRIAL MANUFACTURING SECTOR
Neel Rao
Writes on Reitz India's PA fans and SA fans & 
Induced draft fans and forced draft fans from Reitz 
india
Generally, various types of centrifugal fans are used in manufacturing plants 
especially those having furnaces or boilers to provide air necessary for combustion, 
fuel to the burners, transmit the gases for better heat movement and extract 
exhaust fumes. Based upon the boiler measurement and airflow requisition, various 
types industrial process fans are used with varied potentialities, such as draught fans 
and other process fans. As mentioned earlier, draught fans play a significant role in 
the large manufacturing plants having furnaces or boilers. The induced draught(ID) 
and forced draught (FD) fans are essential to ensure the flow of gases through the 
boiler system.
There are two categories of draught fans (forced draught fans and induced draught 
fans) applied in the power plants. Forced draught fans used in a power plant are 
centrifugal fans. Forced draught fans provide the air essential for fuel combustion by 
forcing air through the combustion air supply method into the heater. Forced 
draught fans called pressure blowers, or FD fans concentrate on the pressure and 
volume at the outlet of the fan to move air through a process. It creates positive air 
pressure.
There is one major difference between the two major types of industrial process 
fans i.e. ID and FD fans. A forced draft (FD) fan compels outside air into the healing 
process whereas an induced draught (ID) fan draws exhaust from the process out 
into the atmosphere. Both FD fan and ID fan control in a way that stabilizes the air 
system in the boiler to create the combustion method systematically.
Application of ID-FD fans
In power plants, where coal is applied as fuel for combustion, FD fans are used as 
primary air fans to manage the right combustion and enlarge the competence of the 
fuel. An average FD fan setting uses inlet and outlet obstacles to manage and 
balance the necessary air enforcement inside the system. Induced draft fans can 
control warm smoke ducts. They have extra decomposition applied to dielectric 
precipitators.
Draught Fans (ID) exhaust all gaseous combustion materials or smoke ducts from the 
boiler, through a dust collector and provide it to the chimney into the open 
aerosphere. The induced draught fan is located above the bundle, producing 
negative air pressure to draw the air through to the next step of the system, which 
could be another implementation like a dryer or an air treatment system for 
pollution control. It also acts as the exhaust to the outside air.
These fans are applied in different industry verticals for better and burnished 
functioning of the machines that supply higher productiveness and unblemished 
manufacturing. Such exclusive fans absorb less power. Therefore, the electricity bill 
becomes lesser. Industries can store a lot of energy. So, the overheads are hugely 
reduced. These fans make low noise. Thus, low noise decreases noise pollution and 
incidentally assists in enhancing working conditions among workers. Therefore, 
productivity is improved, which creates better profits for the industrial organization. 
Such ID and FD fans have a long bearing life, which means that there is again an 
economical benefit on this count, by preventing interruptions and down time due to 
maintenance works to replace bearings and ensures economy in manufacturing the 
products.
About REITZINDIA
Reitz India has set a benchmark to deliver high quality fans for heavy duty industries 
which can work at precise operating conditions like high temperatures and pressures. 
Reitz offer idealistic Centrifugal Fan and Centrifugal blower design that can be used in 
all large scale process industries like cement, iron & steel, power plants, fertilizers/ 
chemicals and more.
Thank you for spending your precious time in reading this article!