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Energies 2018, 11(12), 3425;

A Novel Thermal Module with 3-D Configuration Pulsating Heat Pipe for High-Flux Applications

Green Energy & Environment Research Laboratories, Industrial Technology Research Institute, 195, Sec.4, Chung Hsing Rd., Hsinchu 31040, Taiwan
Department of Power Mechanical Engineering, National Tsing Hua University, 101, Sec.2 Kuang Fu Rd., Hsinchu 30013, Taiwan
Department of Mechanical Engineering, National Chiao Tung University, EE474, 1001 University Rd., Hsinchu 30010, Taiwan
Author to whom correspondence should be addressed.
Received: 26 October 2018 / Revised: 27 November 2018 / Accepted: 4 December 2018 / Published: 6 December 2018
(This article belongs to the Section Thermal Management)
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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. View Full-Text
Keywords: pulsating heat pipe; thermal resistance; junction temperature; thermal module pulsating heat pipe; thermal resistance; junction temperature; thermal module

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Tseng, C.-Y.; Wu, H.-M.; Wong, S.-C.; Yang, K.-S.; Wang, C.-C. A Novel Thermal Module with 3-D Configuration Pulsating Heat Pipe for High-Flux Applications. Energies 2018, 11, 3425.

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