alt Hacker NewsYou can get better cooling performance at the cost of slight water usage or you can use more energy without using water at all.
The greener solution is to use water.
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XMPPwocky • today at 8:30 PM
Seems like it'd depend a lot on e.g. carbon impact of the marginal watt v.s. environmental impact of the marginal gallon? Might depend on the individual site.
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This is entirely dependent on where you are geographically in terms of rainfall and weather. Both water and energy are abundant. The trick is getting them where you need them. So the where is what matters.