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shanghaibebop , (edited )

No, unless you are leveraging evaporative cooling, that amount of circulation isn’t going to get you much.

Just get a real geothermal hvac system if you have the opportunity. Incredibly efficient.

Back of the napkin conversion: 20btu/sqft recommended cooling capacity. 1btu = 252 calories (small)

A 60k btu cooling needs

15120000 gram degrees C of water. Assuming you have perfect heat exchanger on both ends, that’s 15120 liters-degrees circulated per hour.

Pumping that much water alone is going to be quite a bit of energy.

Then you have the problem of heat exchanger. There are lots of sizing mostly based on the deltaT temperature difference.

Realistically, without some agent evaporating and recondensing, you’ll have a massive water to air heat exchanger that’s not practical at all.

If you want to do more research yourself, heat exchanger sizing can be found in mechanical engineering and chemical engineering handbooks.

DontNoodles OP ,

Thank you for your reply. It has given me the factors to consider and the terms to look for. I’m going to cross verify the values you have quoted and if it is indeed as bleak, I’ll just temper my expectations.

But I’m not giving up on it totally yet. What I’m still not sure is how geothermal cooling can provide more heat exchange as compared to the system I’m proposing. At most geothermal systems also only have a few tens on meters of piping underground.

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