rafa-droppa t1_jeg9drv wrote
Reply to comment by Eokokok in Heat Pumps could supply 20% of building heating by 2030. Supercritical CO2 heat pump sales in Japan have now reached a total of 8.5 million units. by DisasterousGiraffe
To me the interesting idea is industrial uses.
Take steel making for example, you have molten iron at one stage, then at a later stage you water cool it.
With further engineering you could pump the heat from the water cooling stage to heat the container of molten iron.
Obviously we're a far way from using heat exchangers to melt iron, but the point is if you can work out something like a preheat so you're heating the iron to 200F before melting it you can use a lot less energy, plus you save energy and water from the water cooling process.
So if you could reduce energy used in steelmaking by like 10% and water by 20% - that would be huge globally.
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