Available Solar Radiation

Duffie, John A.; Beckman, W.A.

doi:10.1002/9781118671603.ch2

Cited by 7 publications

(1 citation statement)

References 59 publications

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“…The meteorological station provides and makes available the whole set of raw data every 10 s. Further details related to the meteorological station can be found in [27]. For the calculation of the performance indexes introduced in Section II-C, GTI is the source of raw data to calculate the radiation on the front side over the target time horizon, while the radiation on the back side has been calculated from the GHI, together with the experimental values of albedo and the tilt angle [28].…”

Section: Table I Typical Performances At Stc and General Characterist...mentioning

confidence: 99%

Bifacial and Monofacial PV Systems Performance Assessment Based on IEC 61724-1 Standard

Ogliari,

Dolara,

Mazzeo

et al. 2023

IEEE J. Photovoltaics

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The performance of bifacial photovoltaic (bPV) modules under various operating conditions needs to be analyzed with research and development activities. This research work performed an experimental comparison of the energy performance of a bPV module and a monofacial photovoltaic (mPV) module, based on experimental data measured at SolarTech LAB , Department of Energy, Politecnico di Milano. For this purpose, the performance ratio (PR) and the temperature-corrected PR proposed by the IEC 61724-1 standard for bPV and mPV modules were evaluated. To calculate the energy improvement of the technology in terms of bifacial gain, measurements were recorded during the period from 8 June to 31 November, 2022, of PV modules facing south, ground-mounted and with a low albedo. It was found that the PR relative gain of the bPV compared with the mPV module is 10.8% higher in the whole period. Moreover, the presence of a commercial white plastic sheet with high reflectivity located beneath the bPV modules from 28 May to 5 June, 2022, showed an additional increase in the bPV PR of 0.0165, corresponding to a relative difference increased by 20%.

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Section: Table I Typical Performances At Stc and General Characterist...mentioning

confidence: 99%

Bifacial and Monofacial PV Systems Performance Assessment Based on IEC 61724-1 Standard

Ogliari,

Dolara,

Mazzeo

et al. 2023

IEEE J. Photovoltaics

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Harnessing of geothermal energy for a greenhouse in Ecuador employing a heat pump: design, construction, and feasibility assessment

Chiriboga

Capelo

Bunces

et al. 2021

Heliyon

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Globally, the greenhouses' farming area comprises 500 000 ha, and they efficiently produce more than half of the vegetables consumed around the world. Nevertheless, high-yield crops tend to be incredibly energy-intensive. This study proposes designing and building a coupled geothermal heat pump for a 470 m 2 greenhouse in the Andean zone conditions addressing a requirement of 15 °C at night and 30 °C during the day. Firstly, the study determined the energy potential of the solar and geothermal sources employing actual measurements and contrasting the results with theoretical models. Then, it developed an energy balance in the greenhouse to size the geothermal heat pump using the vapor compression cycle. Finally, the comprehensive system was built and evaluated through the Leveled Cost of Heat (LCOH). The operation requires a potential of 29.56 and 65.76 kW for heating and cooling; this is technically feasible when running the system with a heating flow driven by an optimized temperature ramp of 1.64 °C h −1 . Also, the capacity factor (CF) shows that a lifespan between 12 to 14 years is required to reach acceptable LCOH when CF is as low as 0.45. Financially, it is necessary to foster customs exemptions to make it competitive versus more traditional sources such as electricity and LPG since the main components of the heat pump and the geothermal exchanger are not produced locally and represent nearly 70 % of the upfront costs.

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Coupled theoretical modelling for the photoelectric performance by the concave-bent flexible PV module

Tian,

Wang,

et al. 2025

Renewable Energy

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Available Solar Radiation

Cited by 7 publications

References 59 publications

Bifacial and Monofacial PV Systems Performance Assessment Based on IEC 61724-1 Standard

Bifacial and Monofacial PV Systems Performance Assessment Based on IEC 61724-1 Standard

Harnessing of geothermal energy for a greenhouse in Ecuador employing a heat pump: design, construction, and feasibility assessment

Coupled theoretical modelling for the photoelectric performance by the concave-bent flexible PV module

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