Types Of Cooling Tower
Here’s a very brief overview of the main types of cooling towers and their differences:
> Crossflow – with a crossflow cooling tower the air and the water components effectively cross each other because the air flows horizontally and the water drops vertically through the flow media.
> Counterflow – with a counterflow design, air flows vertically upwards, counter to the water flow in the fill media (which is flowing vertically down). This means it’s not possible to use the basin’s gravity flow so pressurised spray systems are used to spray the water onto the fill media. Here it’s important not to restrict airflow so the pipes and nozzles are further apart.
> Forced draft – air is pushed or forced by blowers located at the base of the air inlet face.
> Induced draft – fans are used to pull air up and through the fill media. The fans are commonly sited on top of the unit.
> Field erected – constructed on site, normally prefabricated and then assembled in situ.
> Factory assembled – normally shipped in sections (unless very small) and just final assembly happens on site.