Heat pipe

A heat pipe is a device that helps move heat or thermal energy from one place to another. It works by trapping a large amount of heat in a metal tube filled with a special liquid. This liquid is turned into steam when it gets hot, and when the steam cools down it turns back into a liquid and goes back to the first part of the pipe. The heat energy is then moved through the tube to the other end where it can help warm up something else. It's like a long, metal straw that is really good at transferring heat from one place to another.