Experimental Study on the Starting-Up and Heat Transfer Characteristics of a Pulsating Heat Pipe under Local Low-Frequency Vibrations

Vibrations have attracted much attention as an effective method for enhancing heat transfer in pulsating pipes (PHPs). This study mainly investigates and explores the effects of local low-frequency vibrations on starting-up characteristics a PHP. The temperature average temperatures along evaporation section pipe were experimentally scrutinized, with thermal performance, under evaporation, condensation adiabatic sections, respectively. following important conclusions can be derived by experimental study: (1) effect at during time PHP more significant than that section; (2) different positions could reduce PHP—the was best when power lower, while higher; (3) sections resistance PHP, but had little PHP; (4) effectively no paper shows positive performances PHPs.