Enhanced convective heat transfer using graphene dispersed nanofluids
<p>Abstract</p> <p>Nanofluids are having wide area of application in electronic and cooling industry. In the present work, hydrogen exfoliated graphene (HEG) dispersed deionized (DI) water, and ethylene glycol (EG) based nanofluids were developed. Further, thermal conductivity and...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2011-01-01
|
| Series: | Nanoscale Research Letters |
| Online Access: | http://www.nanoscalereslett.com/content/6/1/289 |
| _version_ | 1797724576612876288 |
|---|---|
| author | Baby Tessy Ramaprabhu Sundara |
| author_facet | Baby Tessy Ramaprabhu Sundara |
| author_sort | Baby Tessy |
| collection | DOAJ |
| description | <p>Abstract</p> <p>Nanofluids are having wide area of application in electronic and cooling industry. In the present work, hydrogen exfoliated graphene (HEG) dispersed deionized (DI) water, and ethylene glycol (EG) based nanofluids were developed. Further, thermal conductivity and heat transfer properties of these nanofluids were systematically investigated. HEG was synthesized by exfoliating graphite oxide in H<sub>2 </sub>atmosphere at 200°C. The nanofluids were prepared by dispersing functionalized HEG (f-HEG) in DI water and EG without the use of any surfactant. HEG and f-HEG were characterized by powder X-ray diffractometry, electron microscopy, Raman and FTIR spectroscopy. Thermal and electrical conductivities of f-HEG dispersed DI water and EG based nanofluids were measured for different volume fractions and at different temperatures. A 0.05% volume fraction of f-HEG dispersed DI water based nanofluid shows an enhancement in thermal conductivity of about 16% at 25°C and 75% at 50°C. The enhancement in Nusselts number for these nanofluids is more than that of thermal conductivity.</p> |
| first_indexed | 2024-03-12T10:19:07Z |
| format | Article |
| id | doaj.art-dcd8990f258a4379bce5904cea41d255 |
| institution | Directory Open Access Journal |
| issn | 1931-7573 1556-276X |
| language | English |
| last_indexed | 2024-03-12T10:19:07Z |
| publishDate | 2011-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Nanoscale Research Letters |
| spelling | doaj.art-dcd8990f258a4379bce5904cea41d2552023-09-02T10:18:31ZengSpringerOpenNanoscale Research Letters1931-75731556-276X2011-01-0161289Enhanced convective heat transfer using graphene dispersed nanofluidsBaby TessyRamaprabhu Sundara<p>Abstract</p> <p>Nanofluids are having wide area of application in electronic and cooling industry. In the present work, hydrogen exfoliated graphene (HEG) dispersed deionized (DI) water, and ethylene glycol (EG) based nanofluids were developed. Further, thermal conductivity and heat transfer properties of these nanofluids were systematically investigated. HEG was synthesized by exfoliating graphite oxide in H<sub>2 </sub>atmosphere at 200°C. The nanofluids were prepared by dispersing functionalized HEG (f-HEG) in DI water and EG without the use of any surfactant. HEG and f-HEG were characterized by powder X-ray diffractometry, electron microscopy, Raman and FTIR spectroscopy. Thermal and electrical conductivities of f-HEG dispersed DI water and EG based nanofluids were measured for different volume fractions and at different temperatures. A 0.05% volume fraction of f-HEG dispersed DI water based nanofluid shows an enhancement in thermal conductivity of about 16% at 25°C and 75% at 50°C. The enhancement in Nusselts number for these nanofluids is more than that of thermal conductivity.</p>http://www.nanoscalereslett.com/content/6/1/289 |
| spellingShingle | Baby Tessy Ramaprabhu Sundara Enhanced convective heat transfer using graphene dispersed nanofluids Nanoscale Research Letters |
| title | Enhanced convective heat transfer using graphene dispersed nanofluids |
| title_full | Enhanced convective heat transfer using graphene dispersed nanofluids |
| title_fullStr | Enhanced convective heat transfer using graphene dispersed nanofluids |
| title_full_unstemmed | Enhanced convective heat transfer using graphene dispersed nanofluids |
| title_short | Enhanced convective heat transfer using graphene dispersed nanofluids |
| title_sort | enhanced convective heat transfer using graphene dispersed nanofluids |
| url | http://www.nanoscalereslett.com/content/6/1/289 |
| work_keys_str_mv | AT babytessy enhancedconvectiveheattransferusinggraphenedispersednanofluids AT ramaprabhusundara enhancedconvectiveheattransferusinggraphenedispersednanofluids |