By "people" I meant governments, companies or NGOs. Sure a basic AC unit is cheaper for one person, but it seems plausible that a piping system like the one I described would be a cheaper way to cool a large area. Note that AC will cool one person's house, but contributes a net heating effect to the city.

It's probably a lot more effective to draw the water from ~10m down; the infrastructure costs are far lower, you'll probably not need to insulate the water quite so much for coastal regions (to keep it from warming en route to the surface), you won't need to pump so hard (you won't have a vertical kilometer of buoyancy for your denser-than-shallower-water to fight).

For coastal regions, this might actually work, though those tend to be relatively moderate to start with (courtesy of the water). It would be a ton of infrastructure to get in installed in more ... (read more)

Stupid Questions July 2015

by Gondolinian 1 min read1st Jul 2015123 comments

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This thread is for asking any questions that might seem obvious, tangential, silly or what-have-you. Don't be shy, everyone has holes in their knowledge, though the fewer and the smaller we can make them, the better.

Please be respectful of other people's admitting ignorance and don't mock them for it, as they're doing a noble thing.

To any future monthly posters of SQ threads, please remember to add the "stupid_questions" tag.