Draught fans play an important role in thermal power plants by providing critical support to the various process activities related to power generation. Coal-fired thermal power plants systems use several types of process fans. Based on the size of the boiler or steamer the rating of the fan used differs and based on the type of air flow and the process involved different types of draught fans are used in thermal power plants. An attempt is being made to explain the types of draught fans used in thermal power plants in an easy to understand format in this article.
Mr. Prasad Rao Kotagiri, Managing Director, Reitz India Limited attended FL Smidth Suppliers' Conference held in Copenhagen, Denmark during November, 2015.Monday, 30 November 2015 07:55 Written by Neel Rao
Centrifugal fans are a special type of industrial fans, used in several process industries and air pollution systems. Centrifugal fans are also called as blowers. They are ideal for high-pressure applications, quite different from the other type of fans, known as the axial fans.
In a typical power plant, heat energy is generated by boilers. Generally, boilers use industrial fans for the following reasons:
- To supply air required for combustion
- Remove products of combustion
- Deliver fuel to the burners
- Circulate gases for better heat transfer.
An industrial fan is different from a general-purpose fan in many ways. A general-purpose fan is used for residential and light commercial activity. An industrial fan is used for providing a large flow of air or gas to different industrial processes in various industries.
An industrial centrifugal fan is a type of mechanical equipment used for moving air or different types of gaseous substances during the manufacturing process. The centrifugal fan is also referred to as ‘blower’ and ‘squirrel confine fan’ (since the blowers appear as a hamster wheel). These fans increment the speed and volume of an air stream with the pivoting impellers.
Industrial fans are in high demand these days in India. With the number of factories increasing along with increase in industrial output, there is a demand for different types of industrial fans. The industrial draught fans play a very significant role in the industrial manufacturing process. Draught fans are broadly classified into two types i.e. Forced Draft Fan (FD Fan) and Induced Draft Fan (ID Fan)
Process fans are one of the key components of an Industrial manufacturing plant. Industrial process fans serve a significant purpose by improving the efficiency of a whole variety of industrial activities. Having the right type and number of process fans in factory helps to not only improve efficiency and manufacturing capacity it also helps in maintaining a comfortable and safe environment for workers.