Comparison of the Heat Transfer Efficiency of Nanofluids
The continuously increasing power involved in many applications, coupled with the very small size of a number of component devices, is pushing the technical community to look for more efficient heat transfer systems, to remove the heat generated and keep the system under controlled operating conditi...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIDIC Servizi S.r.l.
2015-05-01
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| Series: | Chemical Engineering Transactions |
| Online Access: | https://www.cetjournal.it/index.php/cet/article/view/4885 |
| _version_ | 1819053675384930304 |
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| author | R. Bubbico G. Celata F. D'Annibale B. Mazzarotta C. Menale |
| author_facet | R. Bubbico G. Celata F. D'Annibale B. Mazzarotta C. Menale |
| author_sort | R. Bubbico |
| collection | DOAJ |
| description | The continuously increasing power involved in many applications, coupled with the very small size of a number of component devices, is pushing the technical community to look for more efficient heat transfer systems, to remove the heat generated and keep the system under controlled operating conditions. In particular, significant interest has been devoted to the use of the so-called nanofluids, obtained by suspending nano-sized particles in conventional heat transfer liquids. According to some literature, these suspensions present enhanced heat transfer capabilities, without the inconveniencies of particles settlement and clogging of the channels encountered using larger particles. However, other results show that the actual improvement in the heat transfer efficiency may depend on the adopted working conditions and on the reference parameters (fluid velocity, Reynolds number, pressure drop, etc.) assumed to compare the performances of the nanoparticles suspensions with those of the clear thermal fluid.
In the present work heat transfer experiments were carried out on a number of nanofluids systems, varying the type and the concentration of the nanoparticles, and the fluid dynamic regime. The investigated suspensions gave rise to heat transfer coefficients different from those of their respective clear thermal fluid, the thermal efficiency being higher or lower, depending on the fluid dynamic parameter used as a base for comparing the systems. Generally speaking, in most cases nanofluids may give an advantage from the heat transfer point of view only when the conditions are unfavorable for the traditional thermal fluids. |
| first_indexed | 2024-12-21T12:39:30Z |
| format | Article |
| id | doaj.art-4cb1c4ac7e784268a1dc3718d1f3f3e0 |
| institution | Directory Open Access Journal |
| issn | 2283-9216 |
| language | English |
| last_indexed | 2024-12-21T12:39:30Z |
| publishDate | 2015-05-01 |
| publisher | AIDIC Servizi S.r.l. |
| record_format | Article |
| series | Chemical Engineering Transactions |
| spelling | doaj.art-4cb1c4ac7e784268a1dc3718d1f3f3e02022-12-21T19:03:50ZengAIDIC Servizi S.r.l.Chemical Engineering Transactions2283-92162015-05-014310.3303/CET1543118Comparison of the Heat Transfer Efficiency of NanofluidsR. BubbicoG. CelataF. D'AnnibaleB. MazzarottaC. MenaleThe continuously increasing power involved in many applications, coupled with the very small size of a number of component devices, is pushing the technical community to look for more efficient heat transfer systems, to remove the heat generated and keep the system under controlled operating conditions. In particular, significant interest has been devoted to the use of the so-called nanofluids, obtained by suspending nano-sized particles in conventional heat transfer liquids. According to some literature, these suspensions present enhanced heat transfer capabilities, without the inconveniencies of particles settlement and clogging of the channels encountered using larger particles. However, other results show that the actual improvement in the heat transfer efficiency may depend on the adopted working conditions and on the reference parameters (fluid velocity, Reynolds number, pressure drop, etc.) assumed to compare the performances of the nanoparticles suspensions with those of the clear thermal fluid. In the present work heat transfer experiments were carried out on a number of nanofluids systems, varying the type and the concentration of the nanoparticles, and the fluid dynamic regime. The investigated suspensions gave rise to heat transfer coefficients different from those of their respective clear thermal fluid, the thermal efficiency being higher or lower, depending on the fluid dynamic parameter used as a base for comparing the systems. Generally speaking, in most cases nanofluids may give an advantage from the heat transfer point of view only when the conditions are unfavorable for the traditional thermal fluids.https://www.cetjournal.it/index.php/cet/article/view/4885 |
| spellingShingle | R. Bubbico G. Celata F. D'Annibale B. Mazzarotta C. Menale Comparison of the Heat Transfer Efficiency of Nanofluids Chemical Engineering Transactions |
| title | Comparison of the Heat Transfer Efficiency of Nanofluids |
| title_full | Comparison of the Heat Transfer Efficiency of Nanofluids |
| title_fullStr | Comparison of the Heat Transfer Efficiency of Nanofluids |
| title_full_unstemmed | Comparison of the Heat Transfer Efficiency of Nanofluids |
| title_short | Comparison of the Heat Transfer Efficiency of Nanofluids |
| title_sort | comparison of the heat transfer efficiency of nanofluids |
| url | https://www.cetjournal.it/index.php/cet/article/view/4885 |
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