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There are these things called "ice bears". Could they be what you're looking for? See https://inhabitat.com/efficient-ice-battery-provides-247-coo https://inha

• dragontamer 3y ago
  Ice Bear went out of business years ago. https://www.greentechmedia.com/articles/read/thermal-storage-evangelist-ice-energy-files-for-bankruptcy https://www.greentechmedia.com/articles/read/thermal-storage... They tried... and failed... to make this a successful business. Maybe in a few years when people become aware of the technological possibilities. Turns out a 500 gallon vat of water can store a lot of cooling / energy, and its not so expensive to make either. ------- The name and technology has been sold. Maybe they'll reappear in a few years?