92 comments on Why wind needs feed-in tariffs (and why it is not the enemy of nuclear)
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92 comments on Why wind needs feed-in tariffs (and why it is not the enemy of nuclear)
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You can use seawater; it just doubles the investment because of the required materials. Also increases the required maintenance by a lot.
Cooling towers are not closed loop. A cooling tower system typically requires 5% of the water circulation as makeup. In a lot of areas even this amount of freshwater is unavailable; let alone a once-through system.
A true closed system is possible. Fin-fan units, ususally using a glycol mixture. It will cost a fortune though, which is why no one wants to do it.
Completely dry cooling systems that essentialy are large water to air heat exchangers are off-the-shelf systems and are for instance used for combined cycle gas turbine plants in deserts.