Making cooled clothing:

🫧 Open on Bubbles So, summer gets really hot, and it's not going to get better anytime soon. At my place, it isn't actively dangerous yet , but it's still unpleasant. A normal air conditioner uses a low boiling-point liquid: something like liquid propane will boil all the way down to -42 C. Just like water, this evaporation absorbs a lot of heat and the remaining liquid becomes very cold. Of course, releasing flammable gas is be wasteful and dangerous, so the vapor is captured and compressed: This increases