Induced Draft Fan Power Plant

Two types of draft fans are used in the power plants which are 1.

Induced draft fan power plant.

Both fd fan id fan operate in such a way that it balances the air system in the thermal plant to make the combustion process efficient. Induced draft fan inverter energy saving and consumption reduction economic benefit. Viewed 314 times 0 begingroup i have been studying a coal fired power plant and the power plant cycle has an induced draft fan that is used to create negative pressure to help get the flue gas travel to the stack. Active 1 year 10 months ago.

How does an induced draft fan work in a coal power plant. The gases passes through the various heating surfaces of the boiler the electrostatic precipitator and discharges to the atmosphere at the top of the stack. In the composition of power supply energy in china thermal power accounts for over 70. Industrial fans are required for many power plants to operate such as primary and secondary air fans and induced draft fans.

Induced draft our centrifugal blowers are used to maintain elevated ventilation resulting in increased system efficiency. In case of fd fan forced draft and id fan induced draft fan working together balancing the furnace pressure in boiler. Forced draft fans fd supply the air necessary for fuel combustion by pushing air. Swapan basu ajay kumar debnath in power plant instrumentation and control handbook 2015.

Understanding rotor dynamics is essential for reliable long term fan. 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. An induced draught fan id fan is provided to maintain a negative pressure in the furnace by sucking the products of combustion from it with a slight positive pressure at the discharge end vis à vis the bottom of the chimney stack. Forced draft fans used in a power plant are centrifugal fans utilizing radial airflow blading or variable pitch axial fans.

Induced draft fan provides the energy for this flow of flue gases. Suppose due to some furnace pressure deviations high enough to cause a temporary resistance in the flow will cause the same effect on the fan as explained in turbulent flow. Forced draft fans and 2. Power plant is not only an electric energy producer but also a user and a consumer of electric energy.

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