Small-Sized Pulsating Heat Pipes/Oscillating Heat Pipes with Low Thermal Resistance and High Heat Transport Capability
Electronics (particularly power electronics) are the core element in many energy-related applications. Due to the increasing power density of electronic parts, the demands on thermal management solutions have risen considerably. As a novel passive and highly efficient cooling technology, pulsating h...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-04-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/13/7/1736 |
| _version_ | 1827719315986579456 |
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| author | Markus Winkler David Rapp Andreas Mahlke Felix Zunftmeister Marc Vergez Erik Wischerhoff Jürgen Clade Kilian Bartholomé Olaf Schäfer-Welsen |
| author_facet | Markus Winkler David Rapp Andreas Mahlke Felix Zunftmeister Marc Vergez Erik Wischerhoff Jürgen Clade Kilian Bartholomé Olaf Schäfer-Welsen |
| author_sort | Markus Winkler |
| collection | DOAJ |
| description | Electronics (particularly power electronics) are the core element in many energy-related applications. Due to the increasing power density of electronic parts, the demands on thermal management solutions have risen considerably. As a novel passive and highly efficient cooling technology, pulsating heat pipes (PHPs) can transfer heat away from critical hotspots. In this work, we present two types of small and compact PHPs with footprints of 50 × 100 mm<sup>2</sup>, thicknesses of 2 and 2.5 mm and with high fluid channel density, optimized for cooling electronic parts with high power densities. The characterization of these PHPs was carried out with a strong relation to practical applications, revealing excellent thermal properties. The thermal resistance was found to be up to 90% lower than that of a comparable solid copper plate. Thus, a hot part with defined heating power would remain at a much lower temperature level and, for the same heater temperature, a much larger heating power could be applied. Moreover, the dependence of PHP operation and thermal properties on water and air cooling, condenser area size and orientation is examined. Under some test configurations, dryout conditions are observed which could be avoided by choosing an appropriate size for the fluid channels, heater and condenser. |
| first_indexed | 2024-03-10T20:40:35Z |
| format | Article |
| id | doaj.art-fc31227d5cf14982ab2e5f54c5824ed3 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T20:40:35Z |
| publishDate | 2020-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-fc31227d5cf14982ab2e5f54c5824ed32023-11-19T20:45:58ZengMDPI AGEnergies1996-10732020-04-01137173610.3390/en13071736Small-Sized Pulsating Heat Pipes/Oscillating Heat Pipes with Low Thermal Resistance and High Heat Transport CapabilityMarkus Winkler0David Rapp1Andreas Mahlke2Felix Zunftmeister3Marc Vergez4Erik Wischerhoff5Jürgen Clade6Kilian Bartholomé7Olaf Schäfer-Welsen8Fraunhofer Institute for Physical Measurement Techniques IPM, Heidenhofstraße 8, 79110 Freiburg, GermanyFraunhofer Institute for Physical Measurement Techniques IPM, Heidenhofstraße 8, 79110 Freiburg, GermanyFraunhofer Institute for Physical Measurement Techniques IPM, Heidenhofstraße 8, 79110 Freiburg, GermanyFraunhofer Institute for Physical Measurement Techniques IPM, Heidenhofstraße 8, 79110 Freiburg, GermanyFraunhofer Institute for Physical Measurement Techniques IPM, Heidenhofstraße 8, 79110 Freiburg, GermanyFraunhofer Institute for Applied Polymer Research IAP, Geiselbergstraße 69, 14476 Potsdam, GermanyFraunhofer Institute for Silicate Research ISC, Neunerpl. 2, 97082 Würzburg, GermanyFraunhofer Institute for Physical Measurement Techniques IPM, Heidenhofstraße 8, 79110 Freiburg, GermanyFraunhofer Institute for Physical Measurement Techniques IPM, Heidenhofstraße 8, 79110 Freiburg, GermanyElectronics (particularly power electronics) are the core element in many energy-related applications. Due to the increasing power density of electronic parts, the demands on thermal management solutions have risen considerably. As a novel passive and highly efficient cooling technology, pulsating heat pipes (PHPs) can transfer heat away from critical hotspots. In this work, we present two types of small and compact PHPs with footprints of 50 × 100 mm<sup>2</sup>, thicknesses of 2 and 2.5 mm and with high fluid channel density, optimized for cooling electronic parts with high power densities. The characterization of these PHPs was carried out with a strong relation to practical applications, revealing excellent thermal properties. The thermal resistance was found to be up to 90% lower than that of a comparable solid copper plate. Thus, a hot part with defined heating power would remain at a much lower temperature level and, for the same heater temperature, a much larger heating power could be applied. Moreover, the dependence of PHP operation and thermal properties on water and air cooling, condenser area size and orientation is examined. Under some test configurations, dryout conditions are observed which could be avoided by choosing an appropriate size for the fluid channels, heater and condenser.https://www.mdpi.com/1996-1073/13/7/1736pulsating heat pipesoscillating heat pipescoolingheat transferthermal resistanceelectronics cooling |
| spellingShingle | Markus Winkler David Rapp Andreas Mahlke Felix Zunftmeister Marc Vergez Erik Wischerhoff Jürgen Clade Kilian Bartholomé Olaf Schäfer-Welsen Small-Sized Pulsating Heat Pipes/Oscillating Heat Pipes with Low Thermal Resistance and High Heat Transport Capability Energies pulsating heat pipes oscillating heat pipes cooling heat transfer thermal resistance electronics cooling |
| title | Small-Sized Pulsating Heat Pipes/Oscillating Heat Pipes with Low Thermal Resistance and High Heat Transport Capability |
| title_full | Small-Sized Pulsating Heat Pipes/Oscillating Heat Pipes with Low Thermal Resistance and High Heat Transport Capability |
| title_fullStr | Small-Sized Pulsating Heat Pipes/Oscillating Heat Pipes with Low Thermal Resistance and High Heat Transport Capability |
| title_full_unstemmed | Small-Sized Pulsating Heat Pipes/Oscillating Heat Pipes with Low Thermal Resistance and High Heat Transport Capability |
| title_short | Small-Sized Pulsating Heat Pipes/Oscillating Heat Pipes with Low Thermal Resistance and High Heat Transport Capability |
| title_sort | small sized pulsating heat pipes oscillating heat pipes with low thermal resistance and high heat transport capability |
| topic | pulsating heat pipes oscillating heat pipes cooling heat transfer thermal resistance electronics cooling |
| url | https://www.mdpi.com/1996-1073/13/7/1736 |
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