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Comparative thermal performance evaluation between ultrathin flat plate pulsating heat pipe and graphite sheet for mobile electronic devices at various operating conditions
- Source :
- Applied Thermal Engineering. 149:1427-1434
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- The objective of this study is to evaluate the thermal performance improvement of an ultrathin, flat plate pulsating heat pipe (PHP) against a graphite sheet for use in mobile electronic devices. Initially, the thermal performances of five PHP models with various channel designs are quantified, and an optimum PHP is selected to achieve the best performance. In the optimum PHP, the thermal performance is analyzed as a function of the heat input and condenser temperature. Finally, the finished product of the flat plate PHP is fabricated using a diffusion bonding technique. The thermal performance of the finished flat plate PHP is then compared with that of the graphite sheet based on conducted tests at the inclination angles of 90°, 0°, and −90°. The thermal resistances of the finished flat plate PHP at the inclination angles of 90° and 0° are 63% and 56%, respectively, lower than those of the graphite sheet, whereas the resistance at the inclination angle of −90° is almost the same as that of the graphite sheet.
- Subjects :
- Materials science
020209 energy
Energy Engineering and Power Technology
02 engineering and technology
Industrial and Manufacturing Engineering
Heat pipe
020401 chemical engineering
Inclination angle
Thermal
0202 electrical engineering, electronic engineering, information engineering
Electronics
Graphite
0204 chemical engineering
Composite material
Condenser (heat transfer)
Diffusion bonding
Subjects
Details
- ISSN :
- 13594311
- Volume :
- 149
- Database :
- OpenAIRE
- Journal :
- Applied Thermal Engineering
- Accession number :
- edsair.doi...........df343c3cf6aa3b5505bf8577bda7b963