There are many commercial products. Most are like running the refrigerator with the door open, so expensive per unit of water production. There was a report a few weeks ago of a hygroscopic salt that required little energy to release the accumulated water. Interesting if it can be scaled.
Published by Joseph Cotruvo, President at Joseph Cotruvo & Associates, Water , Environment and Public Health
There are many commercial products. Most are like running the refrigerator with the door open, so expensive per unit of water production. There was a report a few weeks ago of a hygroscopic salt that required little energy to release the accumulated water. Interesting if it can be scaled.