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_aEG-GiCUC _beng _cEG-GiCUC |
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| 041 | 0 | _aeng | |
| 049 | _aDeposite | ||
| 097 | _aM.Sc | ||
| 099 | _aCai01.13.11.M.Sc.2021.Al.P | ||
| 100 | 0 | _aAli Ashraf Omar Abdelkawi | |
| 245 | 1 | 0 |
_aPerformance evaluation of direct and indirect absorption linear fresnel reflectors operating with nanofluids / _cAli Ashraf Omar Abdelkawi ; Supervised Adel Khalil Hassan Khalil , Muhammed Abdullah Hassan Ahmed |
| 246 | 1 | 5 | _aدراسه استخدام الموائع الدقيقه على مستقبلات فرينل الحراريه بالامتصاص المباشر وغير المباشر |
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_aCairo : _bAli Ashraf Omar Abdelkawi , _c2021 |
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_a96 P. : _bcharts , photoghrphs ; _c30cm |
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| 502 | _aThesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Mechanical Power Engineering | ||
| 520 | _aIn this study, the performance of a linear Fresnel reflector (LFR) is analyzed using three types of nanofluids (Syltherm800-Cu, Therminol-Al2O3, and water-graphite ) as heat transfer fluids with a range of volume fraction of 0.01% to 6%. A comparison between pure-fluids and nanofluids is conducted regarding thermal efficiency, exergy efficiency, pumping power, and heat transfer coefficient. Nanofluids have a consistently positive impact on the thermal performance of solar collectors which as thermal efficiency enhancement was 4% and 3.3% for a volume fraction of 6% in the case of Therminol-Al2O3 and Sylthem-Cu ,respectively. Regarding the heat transfer coefficient, a constant improvement in values was found when using nanofluids, it reached a maximum of 44% and 35% at a volume fraction of 6% for Therminol Al2O3 and Syltherm-Cu, respectively. With regards to the direct absorption technology, nanofluids show a marked increase in optical and thermal performance, compared to the base-fluid | ||
| 530 | _aIssued also as CD | ||
| 653 | 4 | _aDirect absorption | |
| 653 | 4 | _aNanofluid | |
| 653 | 4 | _aSolar energy | |
| 700 | 0 |
_aAdel Khalil Hassan Khalil , _eSupervisor |
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| 700 | 0 |
_aMuhammed Abdullah Hassan Ahmed , _eSupervisor |
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| 856 | _uhttp://172.23.153.220/th.pdf | ||
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_aNazla _eRevisor |
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_aShimaa _eCataloger |
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