That’s not a colostomy bag, it’s the first prototype of [Stephen’s] scratch-built closed loop ... of the system which pumped cool water from a large jug through a loop of plastic tubing ...

A French start-up is reinventing the daily shower with a bold promise: stay under hot water for an hour if you want—without wasting a single extra drop. Thanks to a closed-loop filtration system that ...

Air conditioners use a closed loop refrigerant system to remove ... while delivering up to 72% energy savings compared to traditional water heating systems. Innovating to Meet Heating and ...