Scientists from the United Kingdom’s University of Nottingham and China’s Southwest Jiaotong University have developed a novel hydronic closed-loop PV cooling system for hot and arid regions.

A diagram of Sandia National Laboratories’ simple closed-loop Brayton cycle test loop. The working fluid being compressed, heated and expanded to produce power is supercritical carbon dioxide.

All hybrid closed-loop systems improved time in range and time below range compared with other insulin therapies. MiniMed 780G achieved the greatest improvement in time in range of the systems.