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Tiny data centre used to heat public swimming pool

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Re: Tiny data centre used to heat public swimming pool

#41
post #9

All data centers that are in controversial areas should offer free heated swimming pools for the neighborhood. You could add a giant pool complex as a percentage or two of the cost of a big data center.

Rather than pools specifically, maybe they could design District Heating systems.

Re: Tiny data centre used to heat public swimming pool

#42
post #31

Is it feasible to do this at smaller scales? Would be cool to use my compurers to heat water at home. Put all that useless heat to good use. Air conditioners could do it too, right? Pump heat into a water reservoir instead of just throwing it away?

I have a pool heater and an air conditioner, and I'm running both at the same time. They're fifty feet apart, but this thought crosses my mind constantly.

This does exist btw.

It's a stainless steel coil that you can put on your A/C and then run water from your pool over it to heat the pool.

https://www.youtube.com/watch?v=J7fB8ul9dZw

Re: Tiny data centre used to heat public swimming pool

#43
post #9

All data centers that are in controversial areas should offer free heated swimming pools for the neighborhood. You could add a giant pool complex as a percentage or two of the cost of a big data center.

and AI deniers were saying we were gonna get boiled like frogs, instead we got free heated swimming pools, wait a minute ...

Re: Tiny data centre used to heat public swimming pool

#45
post #2

Something I have been wondering: Why don't data centres use the excess heat for a sort of energy recuperation, turning at least some of it back into electricity?

The concept of waste-heat-to-power (WHP) exists, but its efficiency is limited by thermodynamics. Basically, heat energy is not equal to usable energy. All energy ultimately wants to be heat energy, and it is much easier and more efficient to go from electrical or mechanical energy to heat than vice-versa. Therefore, when you do have an application that actually wants heat, not electricity, such as a public swimming pool or district heating, it is way more efficient to use your waste heat as heat. Even in cases where the desired temperature is wildly different from that of your waste heat, you can convert one heat level into another very efficiently using heat pumps.

Re: Tiny data centre used to heat public swimming pool

#46
post #2

Something I have been wondering: Why don't data centres use the excess heat for a sort of energy recuperation, turning at least some of it back into electricity?

Look up Carnot efficiency. The maximum amount of work you can theoretically extract depends only on a temperature difference. For a datacenter running chips at 100C into ambient air at 60F, it's about 25%. So even with perfect capture, you are guaranteed to lose 3/4 of your input energy to the datacenter as heat anyway.

For comparison, an IC engine has a Carnot efficiency of something like 80% on paper, but the reality you get is only 20-30%

Re: Tiny data centre used to heat public swimming pool

#47
post #9

All data centers that are in controversial areas should offer free heated swimming pools for the neighborhood. You could add a giant pool complex as a percentage or two of the cost of a big data center.

Rather than pools specifically, maybe they could design District Heating systems.

I was thinking more like if they externalized the heat release of the data centers enough they might even be able to heat the whole globe!

Re: Tiny data centre used to heat public swimming pool

#48
post #7
post #2

Something I have been wondering: Why don't data centres use the excess heat for a sort of energy recuperation, turning at least some of it back into electricity?

It's not anywhere near hot enough to generate steam and make electricity. There are uses for low grade heat but they require colocation and careful design, which costs more than just dumping the heat.

It actually is, just not water steam. There's a hot springs resort in Alaska that uses pentane (boiling point 38C) to generate energy. The efficiency is terrible, of course.

Re: Tiny data centre used to heat public swimming pool

#49
post #28

What a useless article! I found some actual information here: https://www.techspot.com/news/97995-data-center-uses-waste-h... The "data center" produces about 28 kW of heat and the swimming pool has cut its gas bill by 62%. They are saving US$24,000 per year.

I don't know about in swimming centers in England but I do know YMCAs in the US often have budgets that look like: - Revenue: $25.01M - Expenses: $25M So "small savings" like this can add up for them.

This is mostly just due to how nonprofits work. If you have excess revenue, you can’t return it to shareholders so you might as well spend it on mission-oriented activities.

Re: Tiny data centre used to heat public swimming pool

#50
post #9

All data centers that are in controversial areas should offer free heated swimming pools for the neighborhood. You could add a giant pool complex as a percentage or two of the cost of a big data center.

I feel like this is one of those things that sounds good, but it's not. It's probably cheaper to build it far away from residential areas, and it's probably better for the people living there to not live too close to a data center.
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