waste heat
Posted: Mon Dec 23, 2002 11:00 am
I'm very interested in learning about cooling tower.Where is the source of waste heat that were produced from cooling tower?
Waste heat is that which must be removed from one system, e.g. an internal combustion engine which uses a radiator to prevent overheating and failure of the engine block and/or other components.
In a steam power plant water is boiled to run an engine, reciprocating or turbine. The steam leaving the engine or turbine enters a condenser where it is cooled down and condensed back to water in liqid form where it can be pumped back into the boiler.
The condenser is cooled by water returned from the basin of a cooling tower where the very warm water from the condenser is sprayed over stacks of wooden slats and falls to the basisn. A counter flow of air is drawn in near the bottom of the tower and upward through the stacked slats by induced draft fans at the top of the tower. The water is cooled by evaporation of a portion of the water.
Check "How Stuff Works" site for more information on topic.