The Utilities Public Discussion Group Public Discussion Group Active 2 weeks ago Public Discussion Group Organizer: Organized by Group Description Leave Group Are you sure you want to leave ? Feed Discussions Documents Photos 9 Albums Members 510 Reply To: Thermal sand battery prototype. MartHale7 Member January 26, 2024 at 11:14 pm I have a pelter fan that could be useful… Now I am looking into storing heat chemically.. https://youtu.be/Oj0plwm_NMs If you put these hand warmers into boiling hot water they re-charge. They would store heat for years…. I have ordered some quicklime to do some experimenting with.