Signal processing engineer wondering if a seasonal heat storage is feasible

[PaulMuadDib]

Hello there,
My background is about signal processing, and after having installed a complete photovoltaic generator (7.2 kWp in 3 directions, Victron system) & storage (21 kWh of Pylontech batteries), heat pumps to heat the house (combined a small Jötul stove) and the domestic hot water, I am now wondering if I could store the summer solar excess for winter (heating sand) and get rid of wood burning. I am trying to build a simple model of a heat storage / sand battery and I need your help for this.
Best regards

 

[phinds]

Welcome to the forum. This is the introduction section. If you have a specific question, don't ask it here, ask it in one of the topic forums.

 

[Bandersnatch]

Lisan al gaib!

 

[DeBangis21]

Welcome.