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Cooling towers on power stations - why?

Stephen Biddle
Hi All


I was working on a power station in Oman last month and it was gas fired with condensing steam turbines - no evaporation.  This week I'm working on a coal fired one in Poland, which has cooling towers and evaporation.  Is it something to do with the gas or just that they have no water in Oman?


Thanks


Stephen
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    Maurice, cooling towers don't 'vent steam'. Too much effort has been put into making sure that the water that makes the steam that drives the turbines doesn't fur up or corrode the system to waste it by venting to the atmosphere. The turbine steam is condensed and fed back to the boiler, i.e. it is a closed system. The 'steam' sometimes seen above cooling towers is made up of water droplets condensing out of the warm air updraft that the cooling tower is designed to create.
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    Maurice, cooling towers don't 'vent steam'. Too much effort has been put into making sure that the water that makes the steam that drives the turbines doesn't fur up or corrode the system to waste it by venting to the atmosphere. The turbine steam is condensed and fed back to the boiler, i.e. it is a closed system. The 'steam' sometimes seen above cooling towers is made up of water droplets condensing out of the warm air updraft that the cooling tower is designed to create.
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