No. of Recommendations: 4
correction to above.
I stated:
(E.g. Florida Keys and a constant flow through the limestone carries away the heat of a data center.)
This was stated just after I said that high water gradients severely reduce efficiency when considering a balanced system.
For a highly imbalanced system (data center, constant heat load, 100% cooling hours, 0% free cooling), the example of a data center cooling itself by exchanging heat with gulf stream waters is a highly efficient one.
(But you have to get a permit first!)
dt downstream of a plant like that would be discharging water 5-10F hotter than ambient. In the gulfstream, at that latitude and location, water temperatures can exceed 99F.
dt +10F would be lethal to many higher aquatic lifeforms.
