What is induced draft cooling tower?
Induced draft cooling towers are a type of mechanical draft tower that features one or more fans. These fans will be located atop the tower, drawing air upwards against the downward flow of water. The water is passed around the wooden packing or decking.
What is induced draft?
Induced draft implies an inlet fan placed on top of the cooling tower and the creation of low pressure. Axial fans are always used for this type of draft. Forced draft means an exhaust fan placed at the base of the cooling tower which then causes overpressure. Both axial and centrifugal fans can be used.
What is induced cooling?
Induced draft cooling towers have fans that are typically mounted on top of the unit and pull air through the fill media. Conversely, air is pushed by blowers located at the base of the air inlet face on forced draft towers.
Where forced draft cooling tower is used?
Forced Draft Cooling Towers These models will remove low-potential heat that is generated in the production process. A counterflow of air combined with hot water results in a transfer of heat in the cooling fill. Paper and chemical industry plants often prefer to used forced draft cooling towers.
How many types of draft are there?
The major kinds of drafting are furniture drafting, architectural drafting, and mechanical or machine drafting, electrical and electronics drafting, topographical drafting, airplane drafting, ship or naval drafting, structural drafting and sheet-metal drafting.
What is ID and FD fan?
The key difference between a forced draft and an induced draft fan is, FD fan forces outside air into the heating system whereas an ID fan draws flue gases from the system out into the atmosphere.
What is forced draft and induced draft?
Comparing Forced Draft Versus Induced Draft Forced-draft fans focus the pressure and volume at the outlet of the fan to push air through a system, creating positive air pressure. Industrial induced draft fans operate by focusing the pressure and volume at the inlet of the fan to pull air through a system.
What is the difference between natural and forced draft cooling tower?
Natural draft towers rely on a “chimney effect” to obtain circulation of the air through the water. Mechanical draft towers use fans to move the air and are subdivided into forced-draft or induced draft towers.
What is the difference between forced draft and induced draft?
What is the difference between draft and pressure?
The difference between atmospheric pressure and the pressure existing in the furnace or flue gas passage of a boiler is termed as draft. Draft can also be referred to as the difference in pressure in the combustion chamber area which results in the motion of the flue gases and the air flow.