TY - JOUR
T1 - Thermal management and uniform temperature regulation of photovoltaic modules using hybrid phase change materials-nanofluids system
AU - Hassan, Ali
AU - Wahab, Abdul
AU - Qasim, Muhammad Arslan
AU - Janjua, Muhammad Mansoor
AU - Ali, Muhammad Aon
AU - Ali, Hafiz Muhammad
AU - Jadoon, Tufail Rehman
AU - Ali, Ejaz
AU - Raza, Ahsan
AU - Javaid, Noshairwan
N1 - Publisher Copyright:
© 2019 Elsevier Ltd
PY - 2020/1
Y1 - 2020/1
N2 - Continuous elevation in temperature of photovoltaic (PV) panels results in the decline of PV electric power production. This paper presents the experimental methodology tested outdoors in Taxila, Pakistan to lower PV temperature with the simultaneous use of nanofluid (graphene/water) and phase change material (RT-35HC). Performance of this hybrid PVT system in terms of PV temperature, electrical efficiency, thermal efficiency and overall efficiency, is compared with PVT/PCM system integrated with water flowing through tubes inside PCM, PV/PCM system and conventional PV. Effects of varying volume concentrations (0.05%, 0.1%, 0.15%) of graphene nanoparticles as well as flowrates (20, 30, 40 LPM) are also examined and it is found that the best performance is achieved with 0.1 vol% nanoparticle concentration and 40LPM flowrate. From the experimentation results, maximum reduction in PV temperature is observed to be 23.9 °C, 16.1 °C and 11.9 °C with nanofluid-based PVT/PCM system, water-based PVT/PCM system and PV/PCM system respectively, with maximum enhancement in electrical efficiency of 23.9%, 22.7% and 9.1% respectively as compared to conventional PV. It is also found that nanofluid-based hybrid PVT/PCM system shows 17.5% higher thermal efficiency as compared to water-based hybrid PVT/PCM system, and overall efficiency enhanced by 12%. Thus, results ensure the best performance with hybrid PVT system integrated with nanofluid and PCM simultaneously.
AB - Continuous elevation in temperature of photovoltaic (PV) panels results in the decline of PV electric power production. This paper presents the experimental methodology tested outdoors in Taxila, Pakistan to lower PV temperature with the simultaneous use of nanofluid (graphene/water) and phase change material (RT-35HC). Performance of this hybrid PVT system in terms of PV temperature, electrical efficiency, thermal efficiency and overall efficiency, is compared with PVT/PCM system integrated with water flowing through tubes inside PCM, PV/PCM system and conventional PV. Effects of varying volume concentrations (0.05%, 0.1%, 0.15%) of graphene nanoparticles as well as flowrates (20, 30, 40 LPM) are also examined and it is found that the best performance is achieved with 0.1 vol% nanoparticle concentration and 40LPM flowrate. From the experimentation results, maximum reduction in PV temperature is observed to be 23.9 °C, 16.1 °C and 11.9 °C with nanofluid-based PVT/PCM system, water-based PVT/PCM system and PV/PCM system respectively, with maximum enhancement in electrical efficiency of 23.9%, 22.7% and 9.1% respectively as compared to conventional PV. It is also found that nanofluid-based hybrid PVT/PCM system shows 17.5% higher thermal efficiency as compared to water-based hybrid PVT/PCM system, and overall efficiency enhanced by 12%. Thus, results ensure the best performance with hybrid PVT system integrated with nanofluid and PCM simultaneously.
KW - Electrical efficiency
KW - Heat transfer
KW - Nanofluids
KW - Phase-change materials
KW - Solar energy
KW - Thermal efficiency
UR - https://www.scopus.com/pages/publications/85067821301
U2 - 10.1016/j.renene.2019.05.130
DO - 10.1016/j.renene.2019.05.130
M3 - Article
AN - SCOPUS:85067821301
SN - 0960-1481
VL - 145
SP - 282
EP - 293
JO - Renewable Energy
JF - Renewable Energy
ER -
