A novel thermal module with 3-D configuration pulsating heat pipe for high-flux applications

Chih Yung Tseng, Ho Meng Wu, Shwin Chung Wong, Kai Shing Yang, Chi-Chuan Wang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


A pulsating heat pipe (PHP) contains a wickless design with aligned serpentine tube configuration whose simple structure offers a comparatively easy manufacturing capability. The bends with large curvature are often used for serpentine PHPs. This eventually results in a decline in effective contact surface area between evaporator/condenser and PHP circuitry, thereby impairing the benefit of the wickless design of a PHP. A novel thermal module featuring a 3-D configuration pulsating heat pipe, an evaporator, and a fin-and-tube condenser is proposed to tackle the high-flux application. Methanol is used as the working fluid with a filling ratio of around 60%. Test results indicate the thermal resistance of the proposed module varies from 0.148 K/W to 0.0595 K/W when the supplied power changes from 100 to 1000 W. The proposed thermal module can handle a supplied power up to 1 kW and the corresponding power or heat flux is much higher than any existing literatures.

Original languageEnglish
Article number3425
Issue number12
StatePublished - 1 Dec 2018


  • Junction temperature
  • Pulsating heat pipe
  • Thermal module
  • Thermal resistance

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