Interestingly, the first prototype of the device has already proven the effectiveness of its work, regardless of the direction or magnitude of gravity. The Purdue University website writes that the main problem on the way to the appearance of refrigerators in space is the technology of distributing oil through the compressor system.

Since it is tied to gravity, it does not work in space. But a fresh development of specialists was able to bypass this limitation and be tested in chambers with artificial microgravity for 20 seconds. The next stage is sending the device to the ISS.