This paper investigates the potential of utilizing air-conditioning(AC)system exhaust to cool Photo Voltaic(PV)panels,leading to improved efficiency.Additionally,the study explores harnessing the heat emitted from the...This paper investigates the potential of utilizing air-conditioning(AC)system exhaust to cool Photo Voltaic(PV)panels,leading to improved efficiency.Additionally,the study explores harnessing the heat emitted from the PV modules for thermal applications.Numerical simulations demonstrate that this cooling method can enhance PV module efficiency by 5%to 50%compared to non-cooled scenarios.Moreover,the recovered hot air leaving the PV panels is directed to a dishwasher for drying purpose,thereby optimizing the overall energy utilization of the proposed system.An energetic and exergetic analysis of the recuperated thermal energy showcases its exceptional thermal efficiency,ranging from 98%to 45%,which aligns with values reported in existing literature.The exergetic efficiency of the suggested system falls between 5.2%and 1%,consistent with the range of values documented in previous studies.By exploiting AC system exhaust and waste heat,this new approach can significantly enhance the performance of PV panels and promote energy efficiency.Implementing this technology could prove instrumental in sustainable energy applications.展开更多
Cooling system design applicable to more than one photovoltaic(PV)unit may be challenging due to the arrangement and geometry of the modules.Different cooling techniques are provided in this study to regulate the temp...Cooling system design applicable to more than one photovoltaic(PV)unit may be challenging due to the arrangement and geometry of the modules.Different cooling techniques are provided in this study to regulate the temperature of conductive panels that are arranged perpendicular to each other.The model uses two vented cavity systems and one L-shaped channel with ternary nanofluid enhanced non-uniform magnetic field.Their cooling performances and comparative results between different systems are provided.The finite element method is used to conduct a numerical analysis for a range of values of the following:the strength of themagnetic field(Hartmann number(Ha)between 0 and 50),the inclination of the magnetic field(γbetween 0 and 90),and the loading of nanoparticles in the base fluid(ϕbetween 0 and 0.03),taking into account both uniformand non-uniformmagnetic fields.For the L-shaped channel and vented cavities,vortex size is controlled by imposing magnetic field and adjusting its strength.Whether uniform or non-uniform magnetic field is applied affects the cooling performances for different cooling configurations.Temperature drops of the horizontal panel with different magnetic field strengths by using channel cooling,vented cavity-1 and vented cavity-2 systems for uniformmagnetic are 11℃,21.5℃,and 3℃when the reference case of Ha=0 is considered for the same cooling systems.However,they become 9.5℃,13.5℃,and 12.5℃when nonuniform magnetic field is used.In the presence of uniform magnetic field effects and changing its magnitude,the use of cooling channel in vented cavity-1 and vented cavity-2 systems results in temperature drops of 4℃,10.8℃,and 3.8℃for vertical panels.On the other hand,when non-uniform magnetic field effects are present,they become 0.5℃,2.1℃,and 9℃.For L-channel cooling,the average Nu for the horizontal panel is more affected byγ,andNu rises asγrises.With increasing nanoparticle loading of ternary nanofluid,the average panel surface temperature shows a linear drop.For the horizontal panel,the temperature declines for nanofluid at the highest loading are 4℃,10℃,and 12℃as compared to using only base fluid.The values of 5℃,7℃,and 11℃are obtained for the vertical panel.Different cooling systems’performance is estimated using artificial neural networks.The method captures the combined impact of applying non-uniformmagnetic field and nanofluid together on the cooling performancewhile accounting for varied cooling strategies for both panels.展开更多
文摘This paper investigates the potential of utilizing air-conditioning(AC)system exhaust to cool Photo Voltaic(PV)panels,leading to improved efficiency.Additionally,the study explores harnessing the heat emitted from the PV modules for thermal applications.Numerical simulations demonstrate that this cooling method can enhance PV module efficiency by 5%to 50%compared to non-cooled scenarios.Moreover,the recovered hot air leaving the PV panels is directed to a dishwasher for drying purpose,thereby optimizing the overall energy utilization of the proposed system.An energetic and exergetic analysis of the recuperated thermal energy showcases its exceptional thermal efficiency,ranging from 98%to 45%,which aligns with values reported in existing literature.The exergetic efficiency of the suggested system falls between 5.2%and 1%,consistent with the range of values documented in previous studies.By exploiting AC system exhaust and waste heat,this new approach can significantly enhance the performance of PV panels and promote energy efficiency.Implementing this technology could prove instrumental in sustainable energy applications.
基金funded by the Deanship of Scientific Research and Libraries,Princess Nourah bint Abdulrahman University,through the Program of Research Project Funding after Publication,grant No.(RPFAP-88-1445).
文摘Cooling system design applicable to more than one photovoltaic(PV)unit may be challenging due to the arrangement and geometry of the modules.Different cooling techniques are provided in this study to regulate the temperature of conductive panels that are arranged perpendicular to each other.The model uses two vented cavity systems and one L-shaped channel with ternary nanofluid enhanced non-uniform magnetic field.Their cooling performances and comparative results between different systems are provided.The finite element method is used to conduct a numerical analysis for a range of values of the following:the strength of themagnetic field(Hartmann number(Ha)between 0 and 50),the inclination of the magnetic field(γbetween 0 and 90),and the loading of nanoparticles in the base fluid(ϕbetween 0 and 0.03),taking into account both uniformand non-uniformmagnetic fields.For the L-shaped channel and vented cavities,vortex size is controlled by imposing magnetic field and adjusting its strength.Whether uniform or non-uniform magnetic field is applied affects the cooling performances for different cooling configurations.Temperature drops of the horizontal panel with different magnetic field strengths by using channel cooling,vented cavity-1 and vented cavity-2 systems for uniformmagnetic are 11℃,21.5℃,and 3℃when the reference case of Ha=0 is considered for the same cooling systems.However,they become 9.5℃,13.5℃,and 12.5℃when nonuniform magnetic field is used.In the presence of uniform magnetic field effects and changing its magnitude,the use of cooling channel in vented cavity-1 and vented cavity-2 systems results in temperature drops of 4℃,10.8℃,and 3.8℃for vertical panels.On the other hand,when non-uniform magnetic field effects are present,they become 0.5℃,2.1℃,and 9℃.For L-channel cooling,the average Nu for the horizontal panel is more affected byγ,andNu rises asγrises.With increasing nanoparticle loading of ternary nanofluid,the average panel surface temperature shows a linear drop.For the horizontal panel,the temperature declines for nanofluid at the highest loading are 4℃,10℃,and 12℃as compared to using only base fluid.The values of 5℃,7℃,and 11℃are obtained for the vertical panel.Different cooling systems’performance is estimated using artificial neural networks.The method captures the combined impact of applying non-uniformmagnetic field and nanofluid together on the cooling performancewhile accounting for varied cooling strategies for both panels.
