They may need CO2 free process heat at 400 ℉, and use a thermal storage at 800 or 1000℉.
Our heat engine can pump more heat than resistive heating (heat pump mode) during charge. During discharge, it can convert heat to electricity from 1000F to 400F, and use that electricity to power a heat pump (and produce more heat).
We can "magnify" the storage both ways.
We don't need to go to 1000F soon, there are so many applications we can decarbonize along the way. We could lower the temperature and do cooling+heating at the same time for example.
Please consider a use case where an industrial user install a thermal storage like this one https://www.kyotogroup.no/technology
They may need CO2 free process heat at 400 ℉, and use a thermal storage at 800 or 1000℉.
Our heat engine can pump more heat than resistive heating (heat pump mode) during charge. During discharge, it can convert heat to electricity from 1000F to 400F, and use that electricity to power a heat pump (and produce more heat). We can "magnify" the storage both ways.
We don't need to go to 1000F soon, there are so many applications we can decarbonize along the way. We could lower the temperature and do cooling+heating at the same time for example.