INDUCED DRAFT TOWER
INDUCED DRAFT TOWER
An induced draft tower is a kind of mechanical draft tower that has at least one fan, situated at the highest point of the cooling tower, which draws air upwards against the descending progression of water passing around the wooden passing
A cooling tower is a heat sink that dissipates useless heat to the environment by cooling the flow of water to a low temperature. The cooling towers have two major types: draft tower and natural draft cooling tower. The mechanical draft cooling towers are the most commonly used cooling tower than the natural draft cooling towers. An induced draft cooling tower is a most common type of mechanical cooling tower . This article mainly explains the various aspects of an induced draft cooling tower. An inducted draft tower is a cooling tower that contains a various number of electric fans installed at the top of the tower. The fans of the tower blow air in the upward direction against the water flowing down around the wooden packing or planks. Because the water flow moves in the opposite direction of the airflow, the top warmer water makes contact with the moist air, and the bottom cooler water makes contact with the drier air. This method improves the heat transfer efficiency of the induced draft cooling tower.
These towers have round or square shapes. They use sprinklers or static manifolds for the water distribution process.
An induced draft cooling tower has a spray distribution header, baffles, fans and drift eliminator. An induced draft cooling tower works in the following way:
- First of all, the spray distribution header injects the entering cooling water all over the cooling tower.
- The spray distribution header directs the spray water downward toward the deflector to maximize contact time between air and water.
- A ‘Cooling water fill’ is used to achieve the maximum heat exchange surface. Metal, wood, PVC or other materials are used for the construction of ‘cooling water fill’. Air sucks into the cooling tower through well-designed “louvres”.
- Large fans draw air into the baffle area, lower the water temperature and cool it. This tower also has a drift eliminator to prevent water droplets from becoming trapped in the exiting airflow.
Induced Draft Tower Forced Draft Tower It has more efficiency than the forced draft tower.It has less efficiency.