Thermal and Electrical Characterization of a Semi-Transparent Dye-Sensitized Photovoltaic Module under Real Operating Conditions

Cornaro, Cristina; Renzi, Ludovica; Pierro, Marco; Carlo, Aldo Di; Guglielmotti, Alessandro

doi:10.3390/en11010155

Cited by 22 publications

(11 citation statements)

References 34 publications

(34 reference statements)

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“…They found that while the thermal transmittance (U-value) was similar, cells with a lower g-value (SHGC), demonstrated strong correlation between the thickness of a-Si layers and energy conservation in lower latitudes. In another study, Martin-Chivelet et al [27] concluded that the degree of transparency of PV modules had 'no appreciable influence' on thermal transmittance (U-value), whereas differences associated with SHGC (g-value) were noted.…”

Section: Solar Heat Gain (G-value)mentioning

confidence: 99%

“…As noted previously, the semi-transparency of 'crystalline silicon PV arrays is created by the transparent glazing surrounding the opaque solar cells, whereas thin-film technologies achieve semi-transparency by using laser ablation to remove layers of the substrate. For this reason, assessing the thermal performance of semi-transparent BIPV is a relatively complex matter, with standard methods designed for conventional glazing potentially producing erroneous results [27,28]. Both the U-value, which measures heat transmission through the BIPV-module and can be calculated using the equations in [29], and the 'solar heat gain coefficient' (SHGC), also known as the g-value, which measures the amount of heat transmitted into the building due to solar radiation, need to be taken into account [26].…”

Section: Thermal Performancementioning

confidence: 99%

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State-of-the-Art Review on the Energy Performance of Semi-Transparent Building Integrated Photovoltaic across a Range of Different Climatic and Environmental Conditions

Khalifeeh

Alrashidi²,

Sellami

et al. 2021

Energies

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Semi-transparent Building Integrated Photovoltaics provide a fresh approach to the renewable energy sector, combining the potential of energy generation with aesthetically pleasing, multi-functional building components. Employing a range of technologies, they can be integrated into the envelope of the building in different ways, for instance, as a key element of the roofing or façade in urban areas. Energy performance, measured by their ability to produce electrical power, at the same time as delivering thermal and optical efficiencies, is not only impacted by the system properties, but also by a variety of climatic and environmental factors. The analytical framework laid out in this paper can be employed to critically analyse the most efficient solution for a specific location; however, it is not always possible to mitigate energy losses, using commercially available materials. For this reason, a brief overview of new concept devices is provided, outlining the way in which they mitigate energy losses and providing innovative solutions for a sustainable energy future.

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Section: Solar Heat Gain (G-value)mentioning

confidence: 99%

Section: Thermal Performancementioning

confidence: 99%

State-of-the-Art Review on the Energy Performance of Semi-Transparent Building Integrated Photovoltaic across a Range of Different Climatic and Environmental Conditions

Khalifeeh

Alrashidi²,

Sellami

et al. 2021

Energies

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“…Nuria [7] installed photovoltaic windows in a room, and obtained decreased energy consumption. Cristina Cornaro et al [8] invented dye-sensitized solar cells and tested it for its electrical and thermal properties. Dye-sensitized solar cells play an important role in renewable energy research due to its features and low-cost manufacturing processes.…”

Section: Introductionmentioning

confidence: 99%

Thermal Comfort Evaluation of Rooms Installed with STPV Windows

et al. 2019

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Thermal comfort is an important aspect to take into consideration for the indoor environment of a building integrated with a semi-transparent Photovoltaics (STPV) system. The thermal comfort of units with photovoltaic windows and that of conventional windows, which is an ordinary without PV, were evaluated via on-site tests and questionnaires. Using the thermal comfort investigation of the test rig, the maximum difference in air temperature was found to be around 5 °C between test unit and comparison unit. The predicted mean vote (PMV)–predicted percentage dissatisfied (PPD) value of the test unit was better than that of the comparison unit. It was observed that on sunny days, the PMV value ranged from 0.2 (nature) to 1.3 (slightly warm) in the test unit, and that of the comparison unit was 0.7 (slightly warm) to 2.0 (warm), thereby providing better thermal comfort, especially during mornings. The maximum difference in PPD values was found to reach 27% between the two units at noon. On cloudy days, the difference was negligible, and the thermal sensation between the foot and the head were almost the same. Fifty respondents were asked to complete a carefully designed questionnaire. The thermal sensation of the test unit was better than that of comparison unit, which corresponded with the test results. Thermal, lighting, acoustic, and other environment comfort scores were combined, and the acceptance of the test unit with the STPV windows was found to be 73.8%. The thermal sensation difference between men and women was around 5%. Thus, during summer, STPV windows can improve the thermal comfort and potentially reduce the air-conditioning load.

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“…Their market share is unknown, but the share of all thin-film solar modules is around 10-15% [1, [10][11][12]16,17]. A special type of the thin-film technology, called dye-sensitized solar cells, have an important role in renewable energy-related research activity due to their features and low-cost manufacturing processes [18]. Research projects in Hungary were conducted with silicon-based thin film and crystalline photovoltaic technologies which have been rapidly expanding, are relatively inexpensive, and have a growing market share.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Thermal Models for Ground-Mounted South-Facing Photovoltaic Technologies: A Practical Case Study

et al. 2018

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This paper examines the thermal properties of free-standing, ground-installed, south-facing crystalline and amorphous silicon photovoltaic modules, the remaining energy and the energy generation of the modules, in ideal and actual summer weather conditions. This work studies the algorithms in other studies used to describe the thermal processes occurring on the surface of photovoltaic modules. Using accurate devices and real, measured data, the deviations and the inaccuracies of theoretical approaches are investigated. The emphasis of the present study is to improve the simulation accuracy of the total emitted long-wave radiation at the module surface and to show the appropriate overall convection coefficient values for ground-mounted south-facing photovoltaic technologies. The innovative aspect of the present paper is an improved model resulting from an improved convective heat transfer and net long-wave radiation calculation. As a result of this research, algorithms describing the energy fluxes were developed. These algorithms have a 1-3% better accuracy of the net long-wave radiation calculations at the module surface. The rate of net energy exchange by convection at the module surface could be improved by 10-12% compared to the previous literature.

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Thermal and Electrical Characterization of a Semi-Transparent Dye-Sensitized Photovoltaic Module under Real Operating Conditions

Cited by 22 publications

References 34 publications

State-of-the-Art Review on the Energy Performance of Semi-Transparent Building Integrated Photovoltaic across a Range of Different Climatic and Environmental Conditions

State-of-the-Art Review on the Energy Performance of Semi-Transparent Building Integrated Photovoltaic across a Range of Different Climatic and Environmental Conditions

Thermal Comfort Evaluation of Rooms Installed with STPV Windows

Comparison of Thermal Models for Ground-Mounted South-Facing Photovoltaic Technologies: A Practical Case Study

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