| 000 | 08530cam a22004458i 4500 | ||
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| 003 | EG-NbEJU | ||
| 005 | 20241201092119.0 | ||
| 008 | 241005s2024 ua 001 0 eng d | ||
| 040 |
_aEG-NbEJU _beng _cEG-NbEJU _dEG-NbEJU |
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| 041 |
_aeng _bara |
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| 100 | 1 | _aHassan , Ramadan Gad Abdelkhalek Gad | |
| 245 | 1 | 0 |
_aThermal Regulation of Photovoltaic (PV) Panels Using Heat Pipe - Phase Change Materials System (HP - PCm) : _bA Thesis Submitted to the Graduate School of Energy Resources , Environment. Chemical and Petrochemical Engineering (EECE) : Egypt-Japan University of Science and Technology (E-JUST) : In Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy In Energy Resources Engineering / _cby Ramadan Gad Abdelkhalek Gad Hassan ; Supervisor Committee Prof. Hamdy Hassan - Energy Resources Engineering Department - E-JUST - Egypt , Prof. Hatem Mahmoud - Environmental Engineering Department - E-JUST - Egypt , Prof. Shinichi Ookawara - Department of Chemical Science and Engineering - Tokyo Institute of Technology - Japan ; Examination Committee Prof. Sameh Nada - E-JUST - Egypt , Prof. Maher Abou Al Sood - Department of Mechanical Engineering - Kafrelsheikh University - Egypt , Prof. Hamdy Hassan - Energy Resources Engineering Department - E-JUST - Egypt , Prof. Hatem Mahmoud - Environmental Engineering Department - E-JUST - Egypt |
| 246 | 1 | 5 |
_aالتنظيم الحراري للالواح الكهروضوئية باستخدام نظام أنبوب حرارى و مواد تغيير الطور : _bرسالة علمية مقدمة إلى المدرسة التخصصية للدراسات العليا : هندسة مصادر الطاقة و البيئة و الكيماويات و البتروكيماويات : الجامعة المصرية اليابانية للعلوم و التكنولوجيا كاستيفاء جزئي لمتطلبات الحصول على درجة الدكتوراه في هندسة مصادر الطاقة / إعداد رمضان جاد عبدالخالق جاد ; لجنة الإشراف على الرسالة ا . د حمدي حسان - الجامعة المصرية اليابانية للعلوم و التكنولوجيا , ا . د حاتم محمود - الجامعة المصرية اليابانية للعلوم و التكنولوجيا , ا . د شينيتشي اوكاوارا - معهد طوكيو للتكنولوجيا ; لجنة المناقشة و الحكم على الرسالة , ا . د سامح ندا - الجامعة المصرية اليابانية للعلوم و التكنولوجيا , ا . د ماهر ابو السعود - جامعة كفر الشيخ , ا . د حمدي حسان - الجامعة المصرية اليابانية للعلوم و التكنولوجيا , أ . د / حاتم محمود - الجامعة المصرية اليابانية للعلوم و التكنولوجيا |
| 260 |
_aAlexandria : _bRamadan Gad Abdelkhalek Gad Hassan _c2024 |
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| 300 |
_a112 leaves ; _c30 cm |
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| 500 | _aIncludes a title page in Arabic | ||
| 502 |
_aThesis (Ph.D.) _bDoctoral _cEgypt - Japan University of Science and Technology (E - JUST) - School of Energy Resources , Environment. Chemical and Petrochemical Engineering (EECE) - Energy Resources Engineering Department _d2024 |
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| 504 | _aIncludes bibliographical references | ||
| 520 | _aDespite the widespread use and marketing of solar cell systems (PV) , the energy conversion efficiency of most solar cells is approximately less than 20%, even under ideal conditions The remaining energy is dissipated as heat , which can increase the cell's temperature and reduce its efficiency Therefore , this thesis focuses on the thermal management of solar cells , aiming to significantly reduce the solar cell operating temperature , enhance the convection efficiency , and boost power generation Different passive cooling systems were examined theoretically and experimentally An evaluation of solar cell (PV) thermal regulation via a hybrid cooling system of flat heat pipes (HP) coupled with phase change material (PCM) is investigated A complete transient mathematical model is constructed and numerically solved using Runge - Kutta homemade program via MATLAB software First , the cooling system performance is investigated for different PCM quantities and types (RT42 , RT35HC , and SP31) for summer and (RT21, RT18HC, and SP15-gel) for winter conditions in Egypt. A thorough study and analysis have been conducted for the impact of the cooling system on PV's temperature , electric efficiency , output power , PCM energy storage , and system efficiency A key finding of this study is a remarkable reduction in the solar cell temperature using PCM of a low melting point compared with a high melting point Then , the current work studies a cooling system incorporating the solar cell with heat pipes and hybrid nanoparticles embedded in PCM Hybrid nanoparticles of copper oxide (CuO) and aluminum oxide (Al2O3) with a ratio of 1:1 are added to PCM to enhance PCM properties Two different PCMs , SP31 and SP15-gel , are used in summer and winter , respectively The evaluation is based on energetic , exergetic , economic , and environmental (4E) approaches Results show that the HP-PCM cooling system achieves higher performance than natural solar panel cooling and boosts using hybrid nanoparticles Lastly , the performance of direct and indirect passive cooling systems of phase change material (PCM)/flat heat pipes (FHP) for low-concentrated solar cell (PV) via compound parabolic collector (CPC) was investigated The study is performed in the case of not including and including the CPC at different concentration ratios and FHP condenser lengths. The study is performed to cool the panel with PCM attached at its back (directly) or transfer the PV's excess heat to the PCM via HP (indirectly) Results show that the indirect cooling system outperforms the direct one with and without the CPC system in terms of cell temperature, power generation , and efficiency Furthermore, experimental thermal management of low concentrated solar cell (LCPV) is investigated using new configurations of heat spreader (HS) : dimple heat spreader (DHS) and trapezoidal heat spreader (THS) with conventional flat plate heat spreader (PHS)) The effect of HS area ratio (AR) (HS/PV surface area) and thicknesses is also investigated Results reveal that using DHS with PV achieves lower cell temperature and higher electric performance Increasing HS's AR and thickness significantly enhances PV performance Finally , this study experimentally investigates the effect of using a new composite passive cooling system of heat spreader (HS) of different configurations : dimple (DHS) , flat plate (PHS) , and trapezoidal (THS) , with phase change materials (PCM) including and non - including metal shaving (MF) for the thermal regulation of low concentrated solar cell modules (LCPV) Two PCMs , SP26E (PCM 26) and SP29Eu (PCM 29) are tested The system's performance is evaluated based on energy , exergy , economic , and environmental approaches under constant solar irradiance levels and ambient temperature The performance of the cooled PV by the composite system is compared with the reference solar cell. The findings reveal that utilizing PCM 26 with and without metal shaving maximally reduces the cell temperature of the DHS cooling system by 55.6 °C and 53.4 °C , respectively , compared with natural PV cooling | ||
| 530 | _aIssued also as a digital file (for more information please check our Digital Repository) | ||
| 590 |
_aEECE _bNA |
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| 700 | 1 | _aHassan , Hamdy | |
| 700 | 1 | _aMahmoud , Hatem | |
| 700 | 1 | _aOokawara , Shinichi | |
| 700 | 1 |
_aNada , Sameh _eExaminator |
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| 700 | 1 | _aAl Sood , Maher Abou | |
| 700 | 1 | _aHassan , Hamdy | |
| 700 | 1 | _aMahmoud , Hatem | |
| 700 | 1 |
_aحسان , حمدي _eمشرف |
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| 700 | 1 |
_aمحمود , حاتم _eمشرف مساعد |
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| 700 | 1 |
_aاوكاوارا , شينيتشي _eمشرف مساعد |
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| 700 | 1 |
_aندا , سامح _eمناقش |
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| 700 | 1 |
_aابو السعود , ماهر _eمناقش مساعد |
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| 700 | 1 |
_aحسان , حمدي _eمناقش مساعد |
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| 700 | 1 |
_aمحمود , حاتم _eمناقش مساعد |
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| 776 | 0 | 8 |
_iPrint version: _aChaffey, Dave, 1963- _tStrategy, implementation and practice _bEighth Edition. _dHoboken, NJ : Pearson, [2022] _z9781292400969 _w(DLC) 2021049493 |
| 901 | _aHaGeR | ||
| 902 | _aSign 09-26-2024 10.11 | ||
| 942 |
_2lcc _n0 _cDISS |
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| 999 |
_c6954 _d6954 |
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