News for hackers. Stuff that matters.
Re:Heat pumps of the 1800s are becoming the technology of th... by thadk on Monday January 16, 2023 @08:13PM (#34407921)
There is an open source 3D printable unit design here which I installed in my window and works well for relatively efficiently exhausting the CO2 from one person in cold weather: https://www.openerv.org (license: CC BY-NC-SA 3.0)

I did not 3D print mine, but ordered it, though as an early adopter, adjustment was required.

Re:Heat pumps of the 1800s are becoming the technology of th... by pbhjpbhj on Tuesday January 17, 2023 @06:40AM (#34411382)
Do you know, is there a document explaining the design somewhere? I can see from the Google images some of the parts, but not clearly all the parts nor the flowpaths and such.