Conversation
monsieuricon

K. Ryabitsev

A serious question for those of you who know these things better than me. With so many cities built on riverbanks, why aren't we using the rivers with heat pumps for both heating and cooling? There's a lot of heat trapped in water compared to air, so it should be super economical to build a heat pump and run a central heating system that will more than pay for itself over just a few years. Similarly, in the summer it can be reversed to do cooling for AC instead.
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ironiridis@mspsocial.net

Chris Harrington ☕✊

Reply to @monsieuricon

@monsieuricon Wildlife/ecosystem reasons. Cooling nuclear power plants and industrial processes with seawater etc has to account for the disruption, making many such projects extremely uneconomical

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monsieuricon

K. Ryabitsev

Reply to @ironiridis@mspsocial.net
@ironiridis okay, but that's cooling, which heats up the water. What about heating, which, in theory, cools the water down (not even sure how perceptibly).
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vathpela@better.boston

Farce Majeure

Reply to @monsieuricon

@monsieuricon @ironiridis you'll still mess up lots of breeding cycles and the like. And that's just the tip of the iceberg, really.

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suihkulokki@society.oftrolls.com

Riku Voipio

Reply to @monsieuricon

@monsieuricon water source heat pumps are used but afaik not very common. Most people just don't live next to a suitable body of water. Cities you use them with district heating/cooling networks. But then again, not enough cities have district heating...

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janne@social.treehouse.systems

Janne Grunau

Reply to @monsieuricon

@monsieuricon just burning things seemed simpler for a long time but it’s slowly changing.
Mannheim (300k inhabitants) installed last year a 20MW heat pump using Rhine water for their city wide central heating system. https://www.mvv.de/en/about-us/sustainability/transformation-of-the-energy-system/climate-friendly-energy-generation/green-heat

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