Exactly what I was thinking as I read the article, why not just slap the equivalent of a giant passive CPU cooler on it. At that scale you should be able to generate real airflow from the convection currents, making the whole thing more efficient. And you've got a basically unlimited atmosphere to dump the heat into.
Build it on the coast and put the heat sink in a shallow tidal pool fed from the ocean and you could have a massive evaporative cooler. But then you have the very real possibility of a tsunami damaging/disabling the system somehow (e.g. covering it with debris that make it less efficient, washing part of it away.)
If you had a very large, very deep lake though, that should be incredibly efficient. Or a river with a good flow rate.
Build it on the coast and put the heat sink in a shallow tidal pool fed from the ocean and you could have a massive evaporative cooler. But then you have the very real possibility of a tsunami damaging/disabling the system somehow (e.g. covering it with debris that make it less efficient, washing part of it away.)
If you had a very large, very deep lake though, that should be incredibly efficient. Or a river with a good flow rate.