Flow of suspensions of carbon nanotubes carrying phase change materials through microchannels and heat transfer enhancement
DC Field | Value | Language |
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dc.contributor.author | Sinha-Ray, Sumit | - |
dc.contributor.author | Sinha-Ray, Suman | - |
dc.contributor.author | Sriram, Hari | - |
dc.contributor.author | Yarin, Alexander L. | - |
dc.date.accessioned | 2021-09-05T17:24:42Z | - |
dc.date.available | 2021-09-05T17:24:42Z | - |
dc.date.created | 2021-06-15 | - |
dc.date.issued | 2014 | - |
dc.identifier.issn | 1473-0197 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/101211 | - |
dc.description.abstract | This work explores the potential of nano-encapsulated phase change materials (PCMs) in applications related to microelectronics cooling. PCMs (wax or meso-erythritol) were encapsulated in carbon nanotubes (CNTs) by a method of self-sustained diffusion at room temperature and pressure. These nano-encapsulated wax nanoparticles alone allowed heat removal over a relatively wide range of temperatures (different waxes have melting temperatures in the range 40-80 degrees C). On the other hand, nano-encapsulated meso-erythritol nanoparticles allowed heat removal in the range 118-120 degrees C. The combination of these two PCMs (wax and meso-erythritol) could extend the temperature range to 40-120 degrees C, when both types of nanoparticles (wax and meso-erythritol intercalated) would be suspended in the same carrier fluid (an oil). The nanoparticles possess a short response time of the order of 10(-7) s. Such nano-encapsulation can also prevent the PCM from sticking to the wall. In this work, experiments with wax-intercalated CNTs, stable aqueous suspensions of CNTs with concentrations up to 3 wt% with and without nano-encapsulated wax were prepared using a surfactant sodium dodecyl benzene sulfonate (NaDDBS). These suspensions were pumped through two channels of 603 mu m or 1803 mu m in diameter subjected to a constant heat flux at the wall. It was found that the presence of the surfactant in CNT suspensions results in a pseudo-slip at the channel wall which enhances the flow rate at a fixed pressure drop. When aqueous solutions of the surfactant were employed (with no CNTs added), the enhanced convection alone was responsible for a similar to 2 degrees C reduction in temperature in comparison with pure water flows. When CNTs with nano-encapsulated wax were added, an additional similar to 1.90 degrees C reduction in temperature due to the PCM fusion was observed when using 3 wt% CNT suspensions. In addition, suspensions of meso-erythritol-intercalated CNTs in alpha-olefin oil were used as coolants in flows through the 1803 mu m-diameter microchannel. These suspensions (1.5 wt% CNT) revealed a temperature reduction due to the PCM fusion of up to 3.2 degrees C, and a fusion temperature in the range 118-120 degrees C. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.subject | THERMAL-ENERGY STORAGE | - |
dc.subject | INTERCALATION | - |
dc.subject | SURFACTANTS | - |
dc.subject | DISPERSION | - |
dc.subject | POLYMERS | - |
dc.subject | LIQUID | - |
dc.subject | SINK | - |
dc.title | Flow of suspensions of carbon nanotubes carrying phase change materials through microchannels and heat transfer enhancement | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Yarin, Alexander L. | - |
dc.identifier.doi | 10.1039/c3lc50949d | - |
dc.identifier.scopusid | 2-s2.0-84891427387 | - |
dc.identifier.wosid | 000328911400006 | - |
dc.identifier.bibliographicCitation | LAB ON A CHIP, v.14, no.3, pp.494 - 508 | - |
dc.relation.isPartOf | LAB ON A CHIP | - |
dc.citation.title | LAB ON A CHIP | - |
dc.citation.volume | 14 | - |
dc.citation.number | 3 | - |
dc.citation.startPage | 494 | - |
dc.citation.endPage | 508 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Biochemistry & Molecular Biology | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Instruments & Instrumentation | - |
dc.relation.journalWebOfScienceCategory | Biochemical Research Methods | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Analytical | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Instruments & Instrumentation | - |
dc.subject.keywordPlus | THERMAL-ENERGY STORAGE | - |
dc.subject.keywordPlus | INTERCALATION | - |
dc.subject.keywordPlus | SURFACTANTS | - |
dc.subject.keywordPlus | DISPERSION | - |
dc.subject.keywordPlus | POLYMERS | - |
dc.subject.keywordPlus | LIQUID | - |
dc.subject.keywordPlus | SINK | - |
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