PV Thermal Battery: Difference between revisions
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*Photovoltaics and other renewables are not gaining traction like they should be because of intermittency - what do you do with PV if there is no sun at night? | *Photovoltaics and other renewables are not gaining traction like they should be because of intermittency - what do you do with PV if there is no sun at night? | ||
*Batteries are expensive. to store enough energy, say in winter when there is little sun - for 5 days - would require a tremendous amount of storage. | *Batteries are expensive. to store enough energy, say in winter when there is little sun - for 5 days - would require a tremendous amount of storage. | ||
*But here's how we do it - store the heat in thermal mass - water - not battery storage. | |||
*Water is less expensive than batteries. In fact, 1000x so. | |||
=Try 2= | =Try 2= | ||
Revision as of 20:36, 8 August 2025
Concept
- Photovoltaics and other renewables are not gaining traction like they should be because of intermittency - what do you do with PV if there is no sun at night?
- Batteries are expensive. to store enough energy, say in winter when there is little sun - for 5 days - would require a tremendous amount of storage.
- But here's how we do it - store the heat in thermal mass - water - not battery storage.
- Water is less expensive than batteries. In fact, 1000x so.
Try 2
Detailing the scenario, 20 sq meters of IBC totes 2 high, raised only 30C from 20-50C - or in the negative direction in summer - stores heat/cool for 12 days, and takes 6 days to produce that heat with PV! 1 MWhr of heat stored.
https://chatgpt.com/c/685b1c5e-83c8-8010-a0e4-bbd8923c8845
Initial
See in https://chatgpt.com/share/6858a32a-d328-8010-8c0b-3268127ba2f1
Result 1:
Result 2:
