Experimental investigation on cooling the photovoltaic panel using hybrid nanofluids
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ORIGINAL ARTICLE
Experimental investigation on cooling the photovoltaic panel using hybrid nanofluids Ravishankar Sathyamurthy1,2 · A. E. Kabeel2,3 · Ali Chamkha4,5 · Alagar Karthick6 · A. Muthu Manokar7 · M. G. Sumithra8 Received: 3 July 2020 / Accepted: 21 October 2020 © King Abdulaziz City for Science and Technology 2020
Abstract This work presents an experimental investigation on the use of CNT/Al2O3 hybrid nanoparticles in a Photovoltaic/ Thermal (PV/T) system to enhance the photovoltaic electrical efficiency by reducing the temperature of PV cell. An experimental comparison on thermal and electrical efficiency of PV panel with and without cooling is experimentally analyzed. Furthermore, instead of using a serpentine tube collector, a spiral tube collector is used to enhance the rate of heat transfer from the photovoltaic panel. From the experimental results it is found that the enhancement is observed in the average electrical efficiency with water and nanofluid in the spiral tube collector and found as 7.15 and 8.2% respectively, whereas, the standalone photo voltaic panel it is found as 6.2%. The efficient removal of heat from the collector increased the power production by 11.7 and 21.4% using water and hybrid nanofluid in the PV/T system respectively, while compared to standalone PV system. Similarly, the overall PV/T efficiency using hybrid nanofluids in the spiral tube collector enhances by 27.3% than using water medium. Keywords PV/T · Electrical · Thermal · Enhancement Abbreviations PV/T Photovoltaic/thermal C p Specific heat capacity (kJ/kg K) Tout Exit temperature ( oC) Tin Inlet temperature ( oC) m f Mass flow rate (kg/s) V Voltage (Volt) I Current (Ampere) I(t) Solar intensity (W/m2)
Ac Collector area (m2) Qu Useful energy (Watts)
* Ali Chamkha [email protected]
4
Institute of Research and Development, Duy Tan University, Da Nang 550000, Vietnam
5
Institute of Theoretical and Applied Research (ITAR), Duy Tan University, Hanoi 100000, Vietnam
6
Department of Electrical and Electronics Engineering, KPR Institute of Engineering and Technology, Coimbatore 641407, Tamil Nadu, India
7
Department of Mechanical Engineering, B. S. Abdur Rahman Crescent Institute of Science and Technology, Chennai, Tamil Nadu, India
8
Department of Electrical and Communications Engineering, KPR Institute of Engineering and Technology, Arasur 641407, Tamil Nadu, India
Ravishankar Sathyamurthy [email protected]; [email protected]
A. E. Kabeel [email protected] A. Muthu Manokar [email protected] 1
Department of Mechanical Engineering, KPR Institute of Engineering and Technology, Arasur 641407, Tamil Nadu, India
2
Mechanical Power Engineering Department, Faculty of Engineering, Tanta University, Tanta, Egypt
3
Faculty of Engineering, Delta University for Science and Technology, Gamasa, Egypt
Introduction Nanoparticles in fluids are attracted by various thermal application due to its higher thermal conductivity and increased specific su
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