Experimental investigation on the heat transfer performance and pressure drop characteristics of γ-Al2O3/water nanofluid in a double tube counter flow heat exchanger
In this paper, overall heat transfer coefficient and friction factor of water based γ-Al2O3 nanofluid in a double tube counter flow heat exchanger have been measured experimentally under turbulent flow condition. For better dispersion of γ-Al2O3 nanoparticles in distilled water, magnetic stirrer and...
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| Format: | Article |
| Language: | English |
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University of Sistan and Baluchestan (USB) and the Iranian Society of Mechanical Engineers (ISME)
2016-12-01
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| Series: | Transport Phenomena in Nano and Micro Scales |
| Subjects: | |
| Online Access: | http://tpnms.usb.ac.ir/article_2864_d25f0966d8df593fa73e464a3c2576a4.pdf |
| _version_ | 1818605953985019904 |
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| author | B. Raei F. Shahraki M. Jamialahmadi S.M. Peyghambarzadeh |
| author_facet | B. Raei F. Shahraki M. Jamialahmadi S.M. Peyghambarzadeh |
| author_sort | B. Raei |
| collection | DOAJ |
| description | In this paper, overall heat transfer coefficient and friction factor of water based γ-Al2O3 nanofluid in a double tube counter flow heat exchanger have been measured experimentally under turbulent flow condition. For better dispersion of γ-Al2O3 nanoparticles in distilled water, magnetic stirrer and ultrasonic vibrator (with a power of 240 kW and frequency of 35 kHz) were implemented. The stabilized γ-Al2O3 /water nanofluid have been examined at the concentrations of 0.05 and 0.15 vol. % with variation of flow rates in the range of 7–9 l/min. Nanofluid enters the inner tube of the heat exchanger at different temperatures including 45, 55,and 65 °C. Results demonstrated that increasing the nanofluid flow rate, concentration and inlet temperature can improve the overall heat transfer coefficient and heat transfer rate. Also, the ratio of the overall heat transfer coefficient of nanofluid to that of pure water decreased with increasing the nanofluid flow rate. Meanwhile, the maximum enhancements of the overall heat transfer coefficient and heat transfer rate and friction factor compared with those of base fluid (distilled water) are respectively equal to 19.3%, 10% and 25% which is occurred at the concentration of 0.15 vol. %. |
| first_indexed | 2024-12-16T14:03:09Z |
| format | Article |
| id | doaj.art-d15c0e5e99b84e3eb07ef2c91c52b780 |
| institution | Directory Open Access Journal |
| issn | 2322-3634 2322-3634 |
| language | English |
| last_indexed | 2024-12-16T14:03:09Z |
| publishDate | 2016-12-01 |
| publisher | University of Sistan and Baluchestan (USB) and the Iranian Society of Mechanical Engineers (ISME) |
| record_format | Article |
| series | Transport Phenomena in Nano and Micro Scales |
| spelling | doaj.art-d15c0e5e99b84e3eb07ef2c91c52b7802022-12-21T22:29:00ZengUniversity of Sistan and Baluchestan (USB) and the Iranian Society of Mechanical Engineers (ISME)Transport Phenomena in Nano and Micro Scales2322-36342322-36342016-12-0151647510.7508/tpnms.2017.01.0072864Experimental investigation on the heat transfer performance and pressure drop characteristics of γ-Al2O3/water nanofluid in a double tube counter flow heat exchangerB. Raei0F. Shahraki1M. Jamialahmadi2S.M. Peyghambarzadeh3Department of Chemical Engineering, University of Sistan and Baluchestan, Zahedan 98164-161, I. R.IranDepartment of Chemical Engineering, University of Sistan and Baluchestan, Zahedan 98164-161, I. R.IranPetroleum Engineering Department, Petroleum University of Technology, Ahwaz, I. R. IranDepartment of Chemical Engineering, Mahshahr branch, Islamic Azad University, Mahshahr, I. R.IranIn this paper, overall heat transfer coefficient and friction factor of water based γ-Al2O3 nanofluid in a double tube counter flow heat exchanger have been measured experimentally under turbulent flow condition. For better dispersion of γ-Al2O3 nanoparticles in distilled water, magnetic stirrer and ultrasonic vibrator (with a power of 240 kW and frequency of 35 kHz) were implemented. The stabilized γ-Al2O3 /water nanofluid have been examined at the concentrations of 0.05 and 0.15 vol. % with variation of flow rates in the range of 7–9 l/min. Nanofluid enters the inner tube of the heat exchanger at different temperatures including 45, 55,and 65 °C. Results demonstrated that increasing the nanofluid flow rate, concentration and inlet temperature can improve the overall heat transfer coefficient and heat transfer rate. Also, the ratio of the overall heat transfer coefficient of nanofluid to that of pure water decreased with increasing the nanofluid flow rate. Meanwhile, the maximum enhancements of the overall heat transfer coefficient and heat transfer rate and friction factor compared with those of base fluid (distilled water) are respectively equal to 19.3%, 10% and 25% which is occurred at the concentration of 0.15 vol. %.http://tpnms.usb.ac.ir/article_2864_d25f0966d8df593fa73e464a3c2576a4.pdfDouble tube heat exchangerNanofluidOverall heat transfer coefficient |
| spellingShingle | B. Raei F. Shahraki M. Jamialahmadi S.M. Peyghambarzadeh Experimental investigation on the heat transfer performance and pressure drop characteristics of γ-Al2O3/water nanofluid in a double tube counter flow heat exchanger Transport Phenomena in Nano and Micro Scales Double tube heat exchanger Nanofluid Overall heat transfer coefficient |
| title | Experimental investigation on the heat transfer performance and pressure drop characteristics of γ-Al2O3/water nanofluid in a double tube counter flow heat exchanger |
| title_full | Experimental investigation on the heat transfer performance and pressure drop characteristics of γ-Al2O3/water nanofluid in a double tube counter flow heat exchanger |
| title_fullStr | Experimental investigation on the heat transfer performance and pressure drop characteristics of γ-Al2O3/water nanofluid in a double tube counter flow heat exchanger |
| title_full_unstemmed | Experimental investigation on the heat transfer performance and pressure drop characteristics of γ-Al2O3/water nanofluid in a double tube counter flow heat exchanger |
| title_short | Experimental investigation on the heat transfer performance and pressure drop characteristics of γ-Al2O3/water nanofluid in a double tube counter flow heat exchanger |
| title_sort | experimental investigation on the heat transfer performance and pressure drop characteristics of γ al2o3 water nanofluid in a double tube counter flow heat exchanger |
| topic | Double tube heat exchanger Nanofluid Overall heat transfer coefficient |
| url | http://tpnms.usb.ac.ir/article_2864_d25f0966d8df593fa73e464a3c2576a4.pdf |
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