Comparisons of Numerical and Experimental Investigations of the Thermal Performance of Al<sub>2</sub>O<sub>3</sub> and TiO<sub>2</sub> Nanofluids in a Compact Plate Heat Exchanger
This study reports the thermal performance of Al<sub>2</sub>O<sub>3</sub> and TiO<sub>2</sub> nanofluids (NFs) flowing inside a compact plate heat exchanger (CPHE) by comparing the experimental and numerical investigations. The NF samples were prepared for five co...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-10-01
|
| Series: | Nanomaterials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-4991/12/20/3634 |
| _version_ | 1797470773147860992 |
|---|---|
| author | Wagd Ajeeb S M Sohel Murshed |
| author_facet | Wagd Ajeeb S M Sohel Murshed |
| author_sort | Wagd Ajeeb |
| collection | DOAJ |
| description | This study reports the thermal performance of Al<sub>2</sub>O<sub>3</sub> and TiO<sub>2</sub> nanofluids (NFs) flowing inside a compact plate heat exchanger (CPHE) by comparing the experimental and numerical investigations. The NF samples were prepared for five concentrations each of Al<sub>2</sub>O<sub>3</sub> and TiO<sub>2</sub> nanoparticles dispersed in distilled water (DW) as a base fluid (BF). The stability of NF samples was ensured, and their viscosity and thermal conductivity were measured. Firstly, the experimental measurements were performed for the heat transfer and fluid flow of the NFs in the plate heat exchanger (PHE) system and then the numerical investigation method was developed for the same PHE dimensions and operation conditions of the experimental investigation. A finite volume method (FVM) and single-phase fluid were used for numerical modelling. The obtained experimental and numerical results show that the thermal performance of the CPHE enhances by adding nanoparticles to the BFs. Furthermore, numerical predictions present lower values of convection heat transfer coefficients than the experimental measurements with a maximum deviation of 12% at the highest flow rate. Nevertheless, the numerical model is suitable with acceptable accuracy for the prediction of NFs through PHE and it becomes better for relatively small particles’ concentrations and low flow rates. |
| first_indexed | 2024-03-09T19:40:42Z |
| format | Article |
| id | doaj.art-b0ec4a5a939d462bb4751ca4b293940e |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T19:40:42Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-b0ec4a5a939d462bb4751ca4b293940e2023-11-24T01:40:45ZengMDPI AGNanomaterials2079-49912022-10-011220363410.3390/nano12203634Comparisons of Numerical and Experimental Investigations of the Thermal Performance of Al<sub>2</sub>O<sub>3</sub> and TiO<sub>2</sub> Nanofluids in a Compact Plate Heat ExchangerWagd Ajeeb0S M Sohel Murshed1IDMEC, Department of Mechanical Engineering, Instituto Superior Técnico, University of Lisbon, 1049-001 Lisbon, PortugalIDMEC, Department of Mechanical Engineering, Instituto Superior Técnico, University of Lisbon, 1049-001 Lisbon, PortugalThis study reports the thermal performance of Al<sub>2</sub>O<sub>3</sub> and TiO<sub>2</sub> nanofluids (NFs) flowing inside a compact plate heat exchanger (CPHE) by comparing the experimental and numerical investigations. The NF samples were prepared for five concentrations each of Al<sub>2</sub>O<sub>3</sub> and TiO<sub>2</sub> nanoparticles dispersed in distilled water (DW) as a base fluid (BF). The stability of NF samples was ensured, and their viscosity and thermal conductivity were measured. Firstly, the experimental measurements were performed for the heat transfer and fluid flow of the NFs in the plate heat exchanger (PHE) system and then the numerical investigation method was developed for the same PHE dimensions and operation conditions of the experimental investigation. A finite volume method (FVM) and single-phase fluid were used for numerical modelling. The obtained experimental and numerical results show that the thermal performance of the CPHE enhances by adding nanoparticles to the BFs. Furthermore, numerical predictions present lower values of convection heat transfer coefficients than the experimental measurements with a maximum deviation of 12% at the highest flow rate. Nevertheless, the numerical model is suitable with acceptable accuracy for the prediction of NFs through PHE and it becomes better for relatively small particles’ concentrations and low flow rates.https://www.mdpi.com/2079-4991/12/20/3634plate heat exchangerheat transferAl<sub>2</sub>O<sub>3</sub> and TiO<sub>2</sub> nanofluidsnumerical model |
| spellingShingle | Wagd Ajeeb S M Sohel Murshed Comparisons of Numerical and Experimental Investigations of the Thermal Performance of Al<sub>2</sub>O<sub>3</sub> and TiO<sub>2</sub> Nanofluids in a Compact Plate Heat Exchanger Nanomaterials plate heat exchanger heat transfer Al<sub>2</sub>O<sub>3</sub> and TiO<sub>2</sub> nanofluids numerical model |
| title | Comparisons of Numerical and Experimental Investigations of the Thermal Performance of Al<sub>2</sub>O<sub>3</sub> and TiO<sub>2</sub> Nanofluids in a Compact Plate Heat Exchanger |
| title_full | Comparisons of Numerical and Experimental Investigations of the Thermal Performance of Al<sub>2</sub>O<sub>3</sub> and TiO<sub>2</sub> Nanofluids in a Compact Plate Heat Exchanger |
| title_fullStr | Comparisons of Numerical and Experimental Investigations of the Thermal Performance of Al<sub>2</sub>O<sub>3</sub> and TiO<sub>2</sub> Nanofluids in a Compact Plate Heat Exchanger |
| title_full_unstemmed | Comparisons of Numerical and Experimental Investigations of the Thermal Performance of Al<sub>2</sub>O<sub>3</sub> and TiO<sub>2</sub> Nanofluids in a Compact Plate Heat Exchanger |
| title_short | Comparisons of Numerical and Experimental Investigations of the Thermal Performance of Al<sub>2</sub>O<sub>3</sub> and TiO<sub>2</sub> Nanofluids in a Compact Plate Heat Exchanger |
| title_sort | comparisons of numerical and experimental investigations of the thermal performance of al sub 2 sub o sub 3 sub and tio sub 2 sub nanofluids in a compact plate heat exchanger |
| topic | plate heat exchanger heat transfer Al<sub>2</sub>O<sub>3</sub> and TiO<sub>2</sub> nanofluids numerical model |
| url | https://www.mdpi.com/2079-4991/12/20/3634 |
| work_keys_str_mv | AT wagdajeeb comparisonsofnumericalandexperimentalinvestigationsofthethermalperformanceofalsub2subosub3subandtiosub2subnanofluidsinacompactplateheatexchanger AT smsohelmurshed comparisonsofnumericalandexperimentalinvestigationsofthethermalperformanceofalsub2subosub3subandtiosub2subnanofluidsinacompactplateheatexchanger |