Researchers have built the first refrigerant-free system to reach sub-zero temperatures, a breakthrough that could reduce food waste and greenhouse gas emissions.

Imaging if this technology could cool a data centre.

Edit: I was not involved in this project. You are wasting your time asking me questions.

  • ch00f@lemmy.worldEnglish
    1·
    1 day ago

    Generally it’s made by first filtering out other gasses (there are materials that will pass nitrogen but block oxygen), and then you just get it super cold with a cryocompressor (uses helium as a refrigerant) to liquify it.