PVT System Research Articles

Improving the overall performance of a hybrid photovoltaic system by reflectors and cooling with water jet

In the present research, the overall performance of the hybrid photovoltaic thermal PVT system used in the production of electric power and water heating has been evaluated. The PVT was coupled with reflectors to increase the energy production and cool it by water jet. The experimental tests were conducted in Iraq – Samarra located at the longitude (43 40 East) and the latitude (34 35 North). Several experiments were carried out through April 2021 in the outdoors. The highest overall instantaneous efficiency was 64%, and the highest percentage improvement in the PVT electrical performance with reflectors was 42.6% at a (0.0084 kg/s) load flow rate. The water temperature in the thermal storage tank increased by about (6°C/6 h) when the electric heater was turned on, while it decreased (6°C/6 h) without turning it on, and it consumed 18.7% of the total batteries energy, which makes it an ideal solution to compensate for the period of sun absence.

Optimization with genetic algorythms of PVT system global efficiency

Photovoltaic (PV) solar panels generally produce electricity in the 6% to 12% efficiency range, the rest being dissipated in thermal losses. To recover this amount, hybrid photovoltaic thermal systems (PV/T) have been devised. These are devices that simultaneously convert solar energy into electricity and heat. A significant amount of research on PV/T collectors has been carried out over the last decade and water PV/T glazed flat plate collector systems turned out to be the most promising to develop (Zondag[1]). It is thus interesting to study the PV/T system as part of a closed loop single phase water CDU (coolant distribution unit) in laminar forced convection. In particular, the analysis was conducted on the optimal cooling performance of the thermal part, testing polynomial channel profiles of varying order (from zero to fourth) for channels of a real industrial module heat sink, under the following conditions: ideal flux of 1000 W/m² on one side, insulation on the opposite side, periodic conditions on the remaining sides, fully developed thermal and velocity profile in laminar flow of water. Through the use of a genetic algorithm, we have optimized the shape of the channel’s sidewalls in terms of heat transfer maximization. In terms of Nusselt number, results show that fourth order profiles are the most efficient. When limits to allowable pressure loss and module weight are introduced, these bring generally to a lower efficiency of the system than the unconstrained case.

Numerical performance investigation of High Vacuum Flat Plate Hybrid Photovoltaic-Thermal devices.

We propose an innovative flat plate hybrid Photovoltaic-Thermal system under high vacuum (HV PV-T) optimized for solar-to-thermal energy conversion. It consists of a glass cover, metallic vessel, and the actual PV-T device, which englobes a low-emissive Transparent Conductive Oxide (TCO), a perovskite-based PV cell, a Solar Absorber, and a copper substrate. We investigate, through a 1-D model developed in MATLAB, the performances of the proposed PV-T system, still mined by radiative losses, varying the operating temperature (Top) and the emittance of the TCO (εTCO ) in the ranges of (25÷175) °C and (0.05÷0.45) respectively. The annual thermal and electrical productions are evaluated considering the Typical Meteorological Year of Naples, Italy. Specific annual costs and emission savings are evaluated and compared with the ones assured by commercial High Vacuum Flat Plate Solar-Thermal (HVFP ST) and PV collectors. Results indicate that the proposed HV PV-T increases the annual cost savings by 34% and 11% when compared to HVFP ST and PV collectors, respectively. Moreover, the presented HV PV-T increases the annual CO2 emissions savings by 7% and 48% when compared to HVFP ST and PV collectors, respectively.

New design for PVT system with elliptic cooling duct involving nanofluid in existence of MHD and utilizing TEG

This research investigates the integration of a thermoelectric-enhanced cooling elliptic duct into a photovoltaic solar system. Employing the finite volume method, the simulation aims to analyze the system's performance. Furthermore, the introduction of a magnetic field is explored as a strategy to boost electricity generation and overall system efficiency. The study is driven by the pursuit of enhanced energy conversion and a thorough comprehension of the complex dynamics within solar energy configurations. The nanofluid laminar flow within elliptic duct has been affected by magnetic force and better cooling has been achieved. Impacts of Wdust (amount of dust), Vi (inlet velocity into elliptic tube), Ha (Hartmann) and φ (fraction of additives) on thermal (ηth) and electrical (ηe) performance have been discussed in output section. With deposit of dust, ηth and ηe decrease about 9.07 % and 23.5 %. With rise of Ha, the uniformity of temperature over silicon layer improves and amounts of ηe and ηth increase about 1.18 % and 6.85 %.With mixing water with nanoparticles, the performance of panel enhances and positive effect enhances about 65.73 % and 7.35 % with elevate of Vi, in view of ηe and ηth, respectively. The enhancement of ηe and ηth with rise of Ha improves about 80.81 % and 15.1 % for greater Vi. As Vi intensifies, the better cooling occurs and amounts of ηe and ηth enhances about 4.03 % and 30.26 %. Achieving a uniform temperature distribution across the panel is crucial for assessing its performance. Increasing Vi and Ha leads to a substantial improvement in uniformity, with enhancements of approximately 47.35 % and 4.66 %, respectively. This indicates a more balanced heat distribution, which is a positive indicator of the system's efficiency.

Techno-Econo-Enviro Assessment of Photovoltaic-Thermal (PV-T) System for Residential Use in Iran Based on Köppen Climate Classification

The reason for utilizing PV-T systems is their capability to generate both electricity and heat at the same time, which enhances energy efficiency and decreases the need for multiple energy sources. Considering the potential of solar energy and different climates in Iran, in this research, the feasibility, modeling, and comparison of the PV-T system to supply electricity and heat to residential units were investigated in 28 cities with 9 climates of Iran. A thorough evaluation of performance was conducted using the software Polysun 9.0 and PVsyst 6.6.8 for a duration of one year. The scientific novelty of this study relies on the simultaneous utilization of two analytical software, the thoroughness of the research, and taking into account the impact of climate on the findings. Investigations showed that the best performance of the designed system is related to Bandar Abbas and Zahedan, and the worst performance is related to Rasht and Sari. In general, according to the amount of electricity and heating produced by the PV-T system, it showed that Shiraz and Rasht stations have the highest and lowest production of energy. In terms of environmental effects, Birjand station will have the most and Rasht the least reduction in CO2 emissions. In terms of heating energy demand for the investigated building, Ardabil has the highest amount and Bandar Abbas has the lowest amount.

A comprehensive numerical investigation of a branch-inspired channel in roll-bond type PVT system using design of experiments approach

In this research, a branch-inspired design of RB in a PVT system is vastly numerically investigated. The cooling channels of RB are based on hexagonal grids inspired by the branch structures. The design variables that have been taken into consideration are the three principal channel geometric parameters of the RB structure. Using the design of experiments, 15 different RB configurations are modeled, and consequently, the thermal and electrical performance analyses are implemented using ANSYS Fluent software; Notably, the numerical simulation is validated by performing an experimental investigation. Furthermore, the influence of these geometric parameters on the average PV surface temperature, the temperature difference between hot and cold regions of the PV surface as well as PVT efficiency are obtained. Interestingly, an ingenious method to determine the average PV surface temperature was introduced to obtain the PV electrical efficiency. In addition, the optimization of the PVT system was conducted with 40 scenarios, exploring the thermal and electrical efficiency, as well as the PV temperature uniformity index. According to the obtained results, the best scenario system can increase PV electrical efficiency by 20.4 %. The optimal system's electrical, thermal, and overall PVT efficiency are 17.75 %, 61.86 %, and 79.56 % respectively at 1000 W/m2 irradiation.

Solar driven desalination system for power and desalination water production by concentrated PVT and MED system

Abstract In this paper, a thermodynamic study of the combination of Concentrated Photovoltaic Thermal (CPVT) and Multi Effect Desalination (MED) system was conducted. CPVT produces electricity, and the heat produced in CPVT is used for the MED system. Engineering Equation Software (EES) was utilized to simulate this system. The effect of CPVT parameters (area, concentration ratio, and average solar radiation) and MED parameters (effect number and temperature of heating steam) were investigated on the produced heat, produced power, exergy destruction, total mass flow rate (FR) of desalinated water, total FR of feed water, heating steam FR and total brine FR. The range of changes for CPVT surface, concentration ratio, and average solar radiation was considered from 2000 m2 to 20000 m2, from 5 to 15 and from 400 W/m2 to 1100 W/m2, respectively. Based on obtained results, as the surface area of the solar panel, the ratio of concentration, and average solar radiation increase, the heat produced increases. Transferring this heat to the MED unit increases the total FR of desalinated water. But it has no significant effect on the Gain ratio (GOR). As the surface area of the solar panel increases from 10000 m2 to 12000 m2, the average radiation intensity increases from 800 W/m2 to 1000 W/m2, and the concentration ratio increases from 10 to 12 in effect the number of 4 and steam temperature of 70 °C, the total mass FR of desalinated water increases by 29 %, 23 %, and 20 %, respectively.

The numerical analysis of Al2O3[sbnd]Cu/water hybrid nanofluid flow inside the serpentine absorber channel of a PVT; the overall efficiency intelligent forecasting

The improvement of overall efficiency of a PVT solar collector leads to reducing the system's size and cost. The application of single and double serpentine absorber channels in a PVT system was investigated considering the Al2O3Cu/water hybrid nanofluid (NF) within the ranges of 0–1% and 500–2000 for the nanoparticle volume fractions (φs) and Res, respectively. The results demonstrated that the double serpentine channel increases the convective heat transfer coefficient, h, and pumping power by 4.36% (or 18.12%) and 10.42% (or 29.78%), respectively, at Re number of 500 (or 2000) within the studied range of φ. The increase in φ from 0% to 1% at a constant Re leads to improving h by 17–25% for both serpentine channels. In addition, the electrical efficiency at different Re numbers improved by 2% and reaches to 15.52% for two configurations as φ escalates from 0% to 0.25% and the further increase in φ is insignificant. However, the thermal efficiencies of the single and double serpentine channels were obtained as 32–38% and 38–43% within the Re range of 500–2000. Moreover, the highest overall efficiency of the single and double serpentine channels were obtained as 84.30% and 90.47% at Re=1000 and φ=1%. Besides, the greatest PEC factor of 1.23 was obtained for the double serpentine channel at Re=1500 and φ=1% followed by PEC of 1.09 for this configuration at Re=1000 and φ=1%. Furthermore, a neural network predictive model was adopted to predict the overall efficiency of the PVT based on the Re and φ and the results showed that the model can predict the overall efficiency with high accuracy.

Performance enhancement of photovoltaic solar collector using fins and bi-fluid: Thermal efficiency study

This work exhibits a three-dimensional numerical investigation of a solar collector Photovoltaic Thermal (PV/T) bi-fluid based on the use of dual exchangers cooling with both water and air simultaneously. The effect of the absorber plate design and water mass flow rate (mf) of water and natural airflow has been studied according to the fins added to the system, which mainly includes a flat plate of aluminum attached to the tubes of aluminum. The objective is to analyze the effects of water mf fluctuating between 0.01 and 0.02 kg/s, fins location and number (from 20 to 40 fins), and changing solar irradiation values (100 to 1050 W/m2) on the flow structure and thermal efficiency of photovoltaic solar cells. The hybrid collectors studied are made of monocrystalline photovoltaic cells and an absorber plate of aluminum in the lower of the PV module. An evaluation was made between three configurations of bi-fluid (air and water) PV/T manifolds according to the number of fins. The first configuration is a hybrid PV/T system containing tubes without fins. The second configuration is a hybrid PV/T system containing tubes attached with 20 fins. The third configuration is a hybrid PV/T system containing tubes attached with 40 fins. The results confirm that the thermal efficiency of the PV/T system using (water and air) as a working fluid increase with increasing the number of fins (from 20 to 40 fins) and with increasing solar radiation (100 to 1050 W/m2), but it decreases a little with increasing mf of water (0.01 to 0.02 kg/s) by about 1.1%. For the mf of water equal to 0.01 kg/s, the thermal efficiency of the PVT system configurations 1, 2, and 3 are equal to 50.54%, 52.33%, and 54.25%, respectively. The optimal design for good cooling of the photovoltaic cells and higher yields of the hybrid collector is the third configuration with a water mf of 0.01 kg/s.

From Theory to Practice: A Sustainable Solution to Water Scarcity by Using a Hybrid Solar Distiller with a Heat Exchanger and Aluminum Oxide Nanoparticles.

The study presently conducted focused on analyzing a solar-powered desalination setup that had a double slope. It can recycle blackish water into drinking water with solar energy. Not only does this result in a significant decrease in carbon emissions but it also represents an environmentally beneficial alternative that is particularly suited for arid locations that are lacking of electrical infrastructure. This system was equipped with a PVT system which makes the system self-sustainable and a CPC collector and implemented the use of aluminum oxide (Al2O3) nanoparticles to enhance its energy efficiency. Energy matrices, economic analysis, and life cycle conversion efficiency were evaluated. The study was conducted annually in New Delhi, with input data provided by IMD in Pune, India. MATLAB was used for the analytical calculations. Energy and exergy were utilized to determine the average annual energy output, which was found to be 8.5%. Additionally, the average energy payback time was calculated to be 16.16%, the average energy payback factor was 13.91%, and the average life cycle cost conversion efficiency was 7.15% higher. The proposed system demonstrated superior performance compared to the previous system in terms of annual yield, energy payback time (EPBT), efficiency of life cycle cost (LCCE), and factor of energy payback (EPBF). The hybrid system has the potential to meet the future demand for potable water and become self-sustainable.

Experimental and Theoretical Evaluation of a Commercial Luminescent Dye for PVT Systems

Combining photovoltaic (PV) and photo-thermal (PT) energy collection strategies in a single system can enhance solar energy conversion efficiencies, leading to increased economic returns and wider adoption of renewable energy sources. This study focuses on incorporating a commercial luminescent organic dye (BASF Lumogen F Red 305) into ethylene glycol to explore its potential for PVT applications. The optical and electrical characteristics of the working fluid were evaluated at different temperatures under direct solar irradiance. Pristine ethylene glycol reduced the maximum PV cell temperature by 10 °C. The inclusion of luminescent dye at various concentrations further reduced the maximum temperature, with the lowest concentration achieving a 7 °C decrease compared to pristine ethylene glycol. The highest dye concentration (0.50 wt%) resulted in a significant temperature reduction of 12 °C. While electrical conversion efficiencies decreased with increasing dye concentration, all concentrations exhibited higher fill factors compared to the bare PV cell during the 100-min illumination period. A ray-tracing model was employed to analyze the behavior of the luminescent dye and quantify transmitted energy for electricity and thermal energy production. Different concentrations showed varying energy outputs, with lower concentrations favoring electrical energy and higher concentrations favoring thermal energy. Economic assessment revealed the viability of certain concentrations for specific countries, highlighting the trade-off between thermal and electrical energy generation. These findings provide valuable insights for PVT system applications in different geographical and economic contexts.

Investigation of solar Photovoltaic cell utilizing hybrid nanofluid confined jet and helical fins for improving electrical efficiency in existence of thermoelectric module

One of the choices for improving the productivity of a PVT solar unit is selecting a more effective cooling unit. To reach the better configuration of cooling technique, the circular tube has been equipped with helical fins in current study. Also, the confined jet has been considered in the bottom of the PVT system. The existence of a thermoelectric layer under the Tedlar layer makes the electrical performance increase. The testing fluid consists of the mixture of water and ND-Co3O4. The regime of flow in both duct and heat sink is laminar and the properties of testing fluid were predicted according to homogeneous mixture. The validation step showed that present code has good accuracy with published experimental data. Among various scrutinized configurations of fins, the best performance obtained for the case with four fins and nine revolutions. Although such configuration makes the overall efficiency to increase about 9.12%, it should be evaluated in view of pressure drop with calculating performance evaluation coefficient (PEC). The value of PEC of best case is about 5.4 which means that it is logical to use such configuration. Combining the jet with the best configuration of cooling duct makes the temperature uniformity and overall performance to increase about 62.38% and 10.58%.

Optimizing MWCNT-Based Nanofluids for Photovoltaic/Thermal Cooling through Preparation Parameters.

Multiwalled carbon nanotubes (MWCNTs) were employed as added particles for nanofluids in this practical investigation. To identify the most appropriate nanofluid for cooling PVT systems that are functional in the extreme summer environment of Baghdad, the parameters of base fluid, surfactant, and sonication time used for mixing were examined. Water was chosen as the base fluid instead of other potential candidates such as ethylene glycol (EG), propylene glycol (PG), and heat transfer oil (HTO). Thermal conductivity and stability were important thermophysical qualities that were impacted by the chosen parameters. The nanofluid tested in Baghdad city (consisting of 0.5% MWCNTs, water, and CTAB with a sonication period of three and a quarter hours) resulted in a 119.5, 308, and 210% enhancement of thermal conductivity (TC) for water compared with EG, PG, and oil, respectively. In addition, the nanofluid-cooled PVT system had an electrical efficiency that was 88.85% higher than standalone PV technology and 44% higher than water-cooled PVT systems. Moreover, the thermal efficiency of the nanofluid-cooled PVT system was 20% higher than the water-cooled PVT system. Finally, the nanofluid-cooled PVT system displayed the least decrease in electrical efficiency and a greater thermal efficiency even when the PV panel was at its hottest at noon.

Performance Analysis and Comparison of an Experimental Hybrid PV, PVT and Solar Thermal System Installed in a Preschool in Bucharest, Romania

The demand for on-site production of energy is showing a rapid increase as the trend of decentralisation and energy self-reliance gains momentum. This paper studies and compares three of the main solar energy technologies: photovoltaic, solar thermal panels and hybrid photovoltaic thermal panels. A prototype experimental installation consisting of the aforementioned technologies was set up on the campus of University Politehnica Bucharest. Data were collected over several months, then the instantaneous power production and overall system performance was computed. The system was analysed in four types of weather patterns, and its suitability was assessed in each case. The results show that the performance of PVT panels is closely connected to the dissipation of the thermal energy collected in the thermal storage tank. In addition, PVT collectors can outperform the PV panels in accordance to the thermal energy demand of the end user when used in an installation with suitable dimensions.

Effect of mass flow rate on the thermo-electrical performance of hybrid PVT system with curved-groove absorber

Effect of mass flow rate on the thermo-electrical performance of hybrid PVT system with curved-groove absorber

Performance enhancement of Photovoltaic-thermal system using hybrid tubes: An assessment of thermodynamic and thermohydraulic efficiencies

In this study, a novel hybrid tube configuration is proposed to develop an efficient photovoltaic thermal system. Subsequently, the impact of different working fluids is investigated, including ternary nanofluids and phase-change material slurries. The performance of the system is optimized by varying the geometrical parameters and working fluids. The combined impact of the hybrid tube and the working fluid is numerically investigated. Thermal, exergy, electrical, and hydraulic efficiencies of the PVT system are analyzed to ascertain the feasibility of the proposed configuration and working fluid. Compared to straight and wavy tubes, the proposed hybrid tube configuration achieves a more uniform and reduced temperature distribution. The optimised hybrid tube configuration performs significantly better than the straight tube configuration, with an improvement of 8.01%, 5.5%, and 32% in primary, exergy, and thermohydraulic efficiencies, respectively. However, compared to wavy tubes, marginally better performance is achieved coupled with a 30% reduction in pressure drop. Moreover, compared to water, the primary, exergy, and thermohydraulic efficiencies are improved by 6.3%, 1.1%, and 20%, respectively, when the optimized hybrid tube is used in conjunction with the proposed slurry. Thus, the hybrid tube design and novel slurry demonstrate high potential for photovoltaic thermal system applications.

Experimental comparative study on using different cooling techniques with photovoltaic modules

Overcoming the issue of photovoltaic (PV) module productivity at high temperatures is one of the most critical obstacles facing its use. PV cells are made of silicon, which loses its properties at high temperatures, degrading the PV module work. The present research compares cotton wicks integrated with rectangular aluminium fins (CWIRAFs) submerged in water as passive cooling with an absorbing plate and copper pipes attached at the PV module backside as active cooling. Compared with the PV module without cooling, CWIRAFs have better performance with the PV module than active cooling owing to evaporative cooling and increased heat dissipation area represented by wet cotton bristles integrated. The PV module is exposed to significant performance degradation without cooling in hot climate conditions. As a result, using CWIRAFs with the PV module had reduced the temperature by 31.4%, increased the power by up to 66.6%, and increased the electrical efficiency from 3.12 to 8.6%. Active cooling methods have reduced the PV temperature by 20.8%, increased the power by 56.7%, and enhanced electrical efficiency by 7.9%. Removing excess heat from the backside of the PV module via circulating water has improved the thermal efficiency and overall efficiency of the PVT system by about 26.3 and 34.2%, respectively.

EXPERIMENTAL DETERMINATION OF THE EFFECT OF FINS OF DIFFERENT CYLINDRICAL GEOMETRIES ON ELECTRICAL AND THERMAL EFFICIENCY IN AN AIR-COOLED PVT SYSTEM

When the temperature of the photovoltaic cell operating under high radiation intensities increases, there is a decrease in its efficiency, in other words, when it is cooled with a liquid or gas, there is an increase in its electrical efficiency. The thermal energy added to this fluid can be used for different needs. In order to prevent this temperature rise, an experimental setup has been designed and manufactured. For the recycling of solar radiation as thermal energy, cylindrical aluminum fins with different surface areas and different geometries subjected to forced convection have been arranged in the channel. The effects of these fins on the total efficiency were evaluated by making different array configurations within the designed control volume. As a result of the evaluations, it has been observed that a better performance has been achieved in the staggered arrangement, although the surface area is less. In the experimental system, fins with different geometries (3-mm, 6-mm axial channel and helically shaped fins) and array positions (inline array and staggered array) have been used. With these fins, electrical efficiency depends on the Reynolds numbers (5400, 6400, and 7400) entering the control volume and the radiation intensity (700 W/m2, 950 W/m2, and 1200 W/m2) is about 13.8-9.7%. This value decreases to 7.9-6.9% in the ordinary PV systems. Thus, it has been concluded that these fins with different surface areas absorb the heat from the photovoltaic cells and play a major role in increasing the efficiency with the decrease in the temperature of the photovoltaic panel. As a result of the measurements, the electrical efficiency of the photovoltaic cells was prevented from falling to 7% under steady-state conditions. In addition to prevention of this energy loss, the thermal energy gained from the control volume is between 630-304 W, depending on the air speed.

Machine learning-based thermo-electrical performance improvement of nanofluid-cooled photovoltaic–thermal system

Hybrid photovoltaic–thermal (hPVT) collectors are devices that allow the conversion of sun energy into useful thermal and electrical energy simultaneously. The power obtained from the photovoltaic (PV) module introduces random fluctuations into the system. While obtaining the data for PV power output in advance and for reducing the impact of random fluctuations, exact day-ahead PV power prediction is crucial. Machine learning algorithms have been proven an effective tool in PV technology for day-ahead prediction of PV-power output. This research employs the Gaussian process regression method using the Matlab environment for forecasting the hPVT collector's performance operating with pure water and Fe/water nanofluid. A one-year historical data pertaining to solar irradiance as well as ambient temperature for Roorkee (29.8543 °N, 77.8880 °E), India location has been used to validate the proposed model. This data is utilized for day-ahead forecasting of solar irradiance and ambient temperature. The outcome elucidates that as the mass-flow rate increases, the thermo-electric performance of the hPVT collector enhances. Raising the mass-flow rate of Fe/water nanofluid from 0.01 to 0.1 kg/s, the cell temperature decreases by 9.35 °C and 9.47 °C, respectively, for the actual and predicted data. The thermal, electrical, as well as overall efficiency of the hPVT collector, improves by 2.73%, 7.11%, and 9.84%, respectively, using Fe/water nanofluid ( ϕ = 2%) in contrast to the water-cooled PVT system. Finally, results demonstrate that the outcomes obtained using the forecasted data closely follow the results obtained using the actual data. In conclusion, this analysis provides a comprehensive solution for utilizing nanofluids as a coolant in the most cost-effective ways.

Insight into the investigation of Fe3O4/SiO2 nanoparticles suspended aqueous nanofluids in hybrid photovoltaic/thermal system

This experimental study aims to evaluate the energetic performance of a photovoltaic-thermal system with a serpentine tube collector. A photovoltaic-thermal unit with a serpentine tube collector is used to compare the unit's performance metrics to those of a PV panel without cooling. The considered heat transfer fluid is the hybrid nanofluid prepared using water and Fe3O4/SiO2 nanoparticles. Using irradiance data from an average day in Aligarh, India, the experiment is conducted in indoor environment in a solar simulator under regulated operating circumstances. Effects of mono and hybrid nanofluids are examined at 3% wt. concentration for varying flow rates (20, 30, 40 LPM). The experimentation analysis showed that the maximum drop in PV temperature at 20 LPM is 25 °C, 24 °C, and then 16 °C for Fe3O4/water, SiO2/water, and Fe3O4/SiO2 nanofluids-based PVT systems, respectively with a highest possible increase in electrical efficiency of 12.6 percent, 18.46 percent, and 24.34 percent, respectively, when compared to traditional PV systems. At a flow rate of 40 LPM, the best performance is obtained using a hybrid PVT method coupled with an aqueous Fe3O4/SiO2 nanofluid. Additionally, it is discovered that hybrid nano-fluid-based PVT systems exhibit 10.5% and 5% greater thermal efficiency than Fe3O4-Water and SiO2-Water PVT systems, respectively. The overall highest efficiency of 67% is achieved for hybrid nanofluid at a flow rate of 40LPM. The hybrid Fe3O4/SiO2 nanofluid is capable of serving as an acceptable cooling fluid for the PV/T collector, as evidenced by the PV/T system's notable improvement in thermal and electrical efficiency and prominent cooling impact. Keywords : Solar energy, Hybrid nano-fluid, Heat transfer, Electrical Power, Thermal Efficiency, PVT system. • The role of hybrid nanofluids for the performance of PVT systems was studied. • Hybrid nature of nanofluid make it more stable than mono-nanofluid. • Electrical and thermal efficiency were analysed at fixed concentration and varying flowrate. • Comparison of Fe 3 O 4 /SiO 2 nanofluid is carried out with individual mono-nanofluid.