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edited 30 November -1 at 12:00AM in Green & Ethical MoneySaving
21 replies 5.3K views
I heard a mention of this piece of technology this weekend; something I had not come across before. As far as I can tell a "heat battery" works like a thermal store but rather than using water as the storage medium it uses a material that undergoes a phase change at around 60 C. Cooling through a phase change often releases a lot of energy and this means that the same amount of energy can be stored in a much smaller volume then the equivalent water-based thermal store would require.