Study of a new concept of photovoltaic–thermal hybrid collector

Assoa, Y.B.; Ménézo, Christophe; Fraisse, Gilles; Yezou, R.; Brau, J.

doi:10.1016/j.solener.2007.04.001

Cited by 136 publications

(40 citation statements)

References 10 publications

(4 reference statements)

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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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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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“…Hybrid collectors which produce thermal energy and electricity at the same time, have been researched and documented by several authors like Chow [4], Ibrahim et al [5] and Assoa et al [6]. Photovoltaic modules produce around 6 -15% of electricity (depending on the technology used), 5% is reflected, and the rest is lost as thermal energy.…”

Section: Introductionmentioning

confidence: 99%

Solar Trigeneration: a Transitory Simulation of HVAC Systems Using Different Typologies of Hybrid Panels

Sancho¹

2014

J. sustain. dev. energy water environ. syst.

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The high energy demand on buildings requires efficient installations and the integration of renewable energy to achieve the goal of reducing energy consumption using traditional energy sources. Usually, solar energy generation and heating loads have different profiles along a day and their maximums take place at different moments. In addition, in months in which solar production is higher, the heating demands are the minimum (hot water is consumed only domestically in summer). Cooling machines (absorption and adsorption) allow using thermal energy to chill a fluid. This heat flow rate could be recovered from solar collectors or any other heat source. The aim of this study is to integrate different typologies of solar hybrid (photovoltaic and thermal) collectors with cooling machines getting solar trigeneration and concluding the optimal combination for building applications. The heat recovered from the photovoltaic module is used to provide energy to these cooling machines getting a double effect: to get a better efficiency on PV modules and to cool the building. In this document the authors analyse these installations, their operating conditions, dimensions and parameters, in order to get the optimal installation in three different European cities. This work suggests that in a family house in Madrid, the optimal combination is to use CPVT with azimuthally tracking and absorption machine. In this case, the solar trigeneration system using 55 m 2 of collector area saves the cooling loads and 79% of the heating load in the house round the year.

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“…They differ from each other according to whether an additional glass cover: [16,17] and the nature of the heat transfer fluid. Several studies have been performed on water [8,18,19], air [20][21][22] and a few on bi-fluid [23]. In this work, our field of interest is the water type collector.…”

Section: Introductionmentioning

confidence: 99%

Experimental Performance Investigation of Photovoltaic/Thermal (PV–T) System

Özgören

Aksoy

Bakir³

et al. 2013

EPJ Web of Conferences

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Abstract. Photovoltaic solar cells convert light energy from the sun into electricity. Photovoltaic cells are produced by semi-conducting materials to convert the energy into electricity and during this process heat is absorbed by the solar radiation. This heat causes a loss of electricity generation efficiencies. In this study, an experimental setup was designed and established to test two separate photovoltaic panel systems with alone PV and with water cooling system PV/T to examine the heat effect on PV systems. The absorbed heat energy behind the photovoltaic cell's surface in insulated ambient was removed by means of a water cooling system and the tests for both systems were simultaneously performed along the July 2011. It is found that without active water cooling, the temperature of the PV module was higher during day time and solar cells could only achieve around 8% conversion efficiency. On the other hand, when the PV module was operated with active water cooling condition, the temperature dropped significantly, leading to an increase in the efficiency of solar cells as much as 13.6%. Gained from absorbed solar heat and maximum thermal conversion efficiencies of the system are determined as 49% and 51% for two different mass flow rates. It is observed that water flow rate is effective on the increasing the conversion efficiency as well as absorption and transition rates of cover glass in PV/T (PV-Thermal) collector, the insulation material and cell efficiency. As a conclusion, the conversion efficiency of the PV system with water cooling might be improved on average about 10%. Therefore, it is recommended that PV system should be designed with most efficient type cooling system to enhance the efficiency and to decrease the payback period.

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Study of a new concept of photovoltaic–thermal hybrid collector

Cited by 136 publications

References 10 publications

Modeling and performance optimization of photovoltaic and thermal collector hybrid system

Modeling and performance optimization of photovoltaic and thermal collector hybrid system

Solar Trigeneration: a Transitory Simulation of HVAC Systems Using Different Typologies of Hybrid Panels

Experimental Performance Investigation of Photovoltaic/Thermal (PV–T) System

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