Some aspects of a PV/T collector/forced circulation flat plate solar water heater with solar cells

Garg, H.P.; Agarwal, Ramesh K.

doi:10.1016/0196-8904(94)00046-3

Cited by 190 publications

(54 citation statements)

References 2 publications

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“…The study presented herein is based on the work previously reported by Yang et al [1], and references [2][3][4][5][6][7][8][9][10][11][12][13][14] where a flat plate solar collector is attached to a PV panel. The hybrid system in question is composed of the PV solar panel and thermal solar tube collector as well as a heat pump as shown in Figure 1.…”

Section: Mathematical Modelmentioning

confidence: 99%

Modeling and Simulation of a Novel Combined Solar Photovoltaic-Thermal Panel and Heat Pump Hybrid System

Sami

2018

Clean Technol.

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A numerical simulation model for a novel concept of a hybrid composed of photovoltaicthermal solar panels and a heat pump is presented. This concept was developed to assess the performance and energy conversion efficiency of the hybrid system used to produce domestic hot water and electricity. A two-dimensional heat transfer and fluid flow dynamic model was developed to describe the behavior of the hybrid system under different solar irradiance, heat pump boundary conditions and different refrigerants. The model is based on dynamic mass and energy equations coupled with the heat transfer coefficients, and the thermodynamic properties of refrigerants as well as material properties. The model compared fairly to experimental data.

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Section: Mathematical Modelmentioning

confidence: 99%

Modeling and Simulation of a Novel Combined Solar Photovoltaic-Thermal Panel and Heat Pump Hybrid System

Sami

2018

Clean Technol.

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“…The conversion efficiency of PV/T system depends on many factors which affect the overall system efficiency. The overall efficiency of the system is denoted by η pvt is equal to the sum of the electrical and thermal output divided by the total solar radiation incident on the PV panel per unit area [11,12]. The overall efficiency (η pvt ) of PVT system can be expressed as The PV/T system, the C f value between 0.35 and 0.40 is reported [14].…”

Section: Efficiency Calculation Of Pv/t Systemmentioning

confidence: 99%

Experimental investigations of hybrid PV/Spiral flow thermal collector system performance using Al₂O₃/water nanofluid

Gangadevi

Vinayagam

Senthilraja

2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. In this paper, the PV/T (Photovoltaic thermal unit) system is investigated experimentally to examine the thermal, electrical and overall efficiency by circulating Al 2 O 3 /water nanofluid of 1wt% and 2wt% with an optimum flow rate of 40L/H. The overall efficiency of PVT system is largely influenced by various factors such as heat due to photovoltaic action; energy radiated at the infrared wavelength of the solar spectrum, solar irradiance, mounting structure, tilt angle, wind speed direction, Ambient temperature and panel material composition. However, the major factor is considered in this study to extract the heat generated in the PV panel by using nanofluid as a coolant to increase the overall system efficiency. Therefore, the result shows that by using 2 wt% Al 2 O 3 /water nanofluid the electrical efficiency, thermal efficiency and overall efficiency of the PVT system enhanced by 13%, 45%, and 58% respectively compared with water. Keywords: PVT system, electrical efficiency, thermal efficiency, Al 2 O 3 /water nanofluid, IntroductionHybrid PVT System absorbs the direct solar radiation and converts into electrical and thermal energy. In this system solar cell, converts sunlight into electrical energy i.e electricity, and the thermal collector captures the remaining energy and removes heat generated by the PV panel. Matin Ghadidri et al., [1] investigated the performance of PVT system using ferrofluid as a heat transfer medium. They reported that the overall system efficiency is about 76% by using ferrofluid of 3wt% as a cooling medium. Michael et al., [2] analyzed that the copper sheet laminated PV/T system using 0.05 % copper oxide -water nanofluid .the result revealed that the thermal efficiency of 45.76%. Mohammad Sardarabadi et al., [3] investigated experimentally the effect of Silica/water on PV/T system. The result revealed that the thermal efficiency of 7.6% and 12.8% in case of 1wt% and 3wt% and the total exergy efficiency is about 24.31% at 3 wt% of Silica-water nanofluid respectively. YingYing Wu et al.,[4] studied the performance of photo electric hybrid system. The result showed that the unglazed PVT gives higher system performance by using nanofluid compared with water. Wei He et al., [5] studied the performance of a thermoelectric cooling and heating system in summer and winter operation modes. The result revealed that the COP of the system reaches 1.7 and the electrical and thermal efficiency increases into 16.7% and 23.5% respectively. Khelifa et al., [6] analyzed the hybrid PV/T system using Computational Fluid Dynamics (CFD). Adnan Ibrahim et al.,

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“…Authors' approaches to PV/T systems vary, but these systems are usually investigated in 2 main categories, as water-hybrid and air-hybrid collectors. Some of these studies have been performed using water [1][2][3][4][5][6][7][8][9][10][11][12][13] and dual (water and air) heat exchangers [14,15].…”

Section: Literature Review and Project Approachmentioning

confidence: 99%

Modeling and performance optimization of photovoltaic and thermal collector hybrid system

Engin¹,

Çolak²

2016

Turk J Elec Eng & Comp Sci

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Abstract:In this paper, the hybrid photovoltaic/thermal collector (PV/T) system's electrical and thermal efficiency was examined by stating a mathematical model and developing a prototype of the system. To enhance the electrical efficiency, the cell temperature of the PV module was decreased with cooling and the heated fluid could be used for low heating applications. For this purpose, a PV/T system was modeled and constructed using a thermal collector placed beneath the photovoltaic panel where the excess heat and solar radiation through the transparent PV module was the input of the thermal collector. A transparent solar module was used in order to improve the total efficiency of the hybrid PV/T system by means of increasing the radiant solar energy reaching the absorber plate of the collector. The absorber plate was coated with titanium dioxide as the absorption level of the coating was higher than 95%, which increases the thermal output by 10%. We note that using TINOX coating for the absorber plate and transparent solar module had the advantage of increasing the thermal yield of the hybrid system. The influences of the dynamic parameters on the system performance, wind speed and water flow rate, were examined on a daily basis and it was observed that the wind speed had a minor effect on the performance and that forced circulation improved the thermal efficiency. The PV/T hybrid system was compared with the separate PV module and thermal collector efficiencies and the results are presented. With these improvements, the efficiency of the single cover, water type PV/T hybrid system is increased to the maximum reported value in literature.

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Some aspects of a PV/T collector/forced circulation flat plate solar water heater with solar cells

Cited by 190 publications

References 2 publications

Modeling and Simulation of a Novel Combined Solar Photovoltaic-Thermal Panel and Heat Pump Hybrid System

Modeling and Simulation of a Novel Combined Solar Photovoltaic-Thermal Panel and Heat Pump Hybrid System

Experimental investigations of hybrid PV/Spiral flow thermal collector system performance using Al₂O₃/water nanofluid

Modeling and performance optimization of photovoltaic and thermal collector hybrid system

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Some aspects of a PV/T collector/forced circulation flat plate solar water heater with solar cells

Cited by 190 publications

References 2 publications

Modeling and Simulation of a Novel Combined Solar Photovoltaic-Thermal Panel and Heat Pump Hybrid System

Modeling and Simulation of a Novel Combined Solar Photovoltaic-Thermal Panel and Heat Pump Hybrid System

Experimental investigations of hybrid PV/Spiral flow thermal collector system performance using Al2O3/water nanofluid

Modeling and performance optimization of photovoltaic and thermal collector hybrid system

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Product

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Experimental investigations of hybrid PV/Spiral flow thermal collector system performance using Al₂O₃/water nanofluid