Question: what are oscillating heat pipes?
Answer: An Oscillating Heat Pipe (OHP), also known as a Pulsating Heat Pipe (PHP), is a two-phase heat transfer device that was invented by Akachi in the1990s [1], [2]. An OHP only consists of a bended capillary tube and the working fluid in it, as shown in Fig. ... This is the basic principle of heat transport for an OHP.