I found these links that seem like similar tech. It's not clear to me if the Indigo is the same as the Isobar system. https://www.theguardian.com/technology/20

I found these links that seem like similar tech. It's not clear to me if the Indigo is the same as the Isobar system. https://www.theguardian.com/technology/2016/sep/08/einstein-inspired-isobar-vaccine-cooling-system-wins-uk-james-dyson-award https://www.theguardian.com/technology/2016/sep/08/einstein-... https://en.wikipedia.org/wiki/Einstein_refrigerator https://en.wikipedia.org/wiki/Einstein_refrigerator I suspect "water" is some other working fluid in the sealed system, ah maybe ammonia-water mentioned below: https://www.jamesdysonaward.org/en-GB/2016/project/isobar/ https://www.jamesdysonaward.org/en-GB/2016/project/isobar/