Comparison of solar spectral irradiance measurements using the average photon energy parameter

Norton, Matthew; Amillo, A.M. Gracia; Galleano, Roberto

doi:10.1016/j.solener.2015.06.023

Cited by 58 publications

(34 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In (55), is the minimum photon wavenlength for solar irradiance, being 400 nm [26]. Note that , needed later on, is the maximum one, being 1050 nm [26]. The particularity of .…”

Section: Basic Considerationsmentioning

confidence: 99%

Enhancement of a photovoltaic cell performance by a coupled cooled nanocomposite thermoelectric hybrid system, using extended thermodynamics

Machrafi

2017

Current Applied Physics

View full text Add to dashboard Cite

A new analytical mathematical model is developed, describing a cooled photovoltaicthermoelectric hybrid system. The thermoelectric material is a nanocomposite where the model takes into account size-dependent non-local thermoelectric properties from an extended thermodynamic point of view. The photovoltaic device powers also the cooling system. The model determines first the optimum thickness of the photovoltaic device, then studies the influence of several size-related parameters on the thermoelectric efficiency (also related to the figure of merit) and finally, coupled to a cooling device, the overall efficiency. For the photovoltaic part, the model is applied to two materials, mono-crystalline and poly-crystalline silicon. The thermoelectric part of the model is applied to an n-leg nanocomposite made out of Sb2Te3 nanoparticles in a Bi2Te3 matrix and of a p-leg nanocomposite made out of Bi2Se3 nanoparticles in a Bi2Te3 matrix. An optimal total photovoltaic device size has been found to be around 127 µm and 1.25 µm for the mono-and poly-crystalline silicon, respectively, leading to efficiencies up to 20 %, depending on photovoltaic recombination characteristics. With the cooling device, the overall efficiency was increased by up to an additional 10 % (an increase of almost 50 %), leading to overall efficiencies around 25 %. IntroductionDevelopments in renewable energy seek to alleviate the global energy crisis and reduce its impact on the environment. One way is to use solar energy. By means of photovoltaic (PV) solar cells, photonic energy is mainly converted into electricity and waste heat. PV cells have relatively low conversion efficiency, because they can only utilize part of the incident solar energy due to its given bandgap, and require often hybrid configurations [1]. One way to increase the efficiency of PV cells is using thermal management by means of heat sinks [2]. Otherwise, the waste heat can be used in order to be converted to more electricity via thermoelectric devices (TE) [3][4][5][6]. As a common PV cell converts a large amount of solar irradiant energy into heat, a hybrid PV cell and TE device (PVTE) may be a prospective way to improve the overall efficiency of solar energy [7]. One form of PVTE systems uses the socalled spectrum splitting concentrating system, where the photons with an energy out of the PV working waveband are incident to the TE devices, generating thereby electricity via the thermoelectric effect [8][9][10]. This system is complex and the heat produced from the PV is still not used. Connecting the TE device directly at the dark side of the PV cell is simpler and theoretically all thermal energy can be used by the TE device [11], of which the efficiency can be even increased by cooling the TE device [7,12]. It is the latter hybrid system that we consider in this work. As the efficiency in TE devices are proportional (though not necessarily linearly) on mainly the temperature difference across the device and the figure of merit, both are to be increased. The temper...

show abstract

“…In (55), is the minimum photon wavenlength for solar irradiance, being 400 nm [26]. Note that , needed later on, is the maximum one, being 1050 nm [26]. The particularity of .…”

Section: Basic Considerationsmentioning

confidence: 99%

Enhancement of a photovoltaic cell performance by a coupled cooled nanocomposite thermoelectric hybrid system, using extended thermodynamics

Machrafi

2017

Current Applied Physics

View full text Add to dashboard Cite

show abstract

“…A detailed description of the two measured databases, including the procedure followed to register and record the spectral irradiance measurements, the instruments used, the wavelength range covered and the temporal resolution of the recordings, can be found in [35] for the global irradiance database and in [36] for the direct irradiance database.…”

Section: Validationmentioning

confidence: 99%

“…The average photon energy can be used to describe the spectral irradiance distribution at a certain location to within a level of certainty, as shown by Minemoto et al [12,35]. Despite the applications of the APE values and due to the lack of spectrally-resolved irradiance data, in this section, we have calculated the APE values considering the output of the SPECMAGIC algorithm.…”

Section: Average Photon Energy Calculationmentioning

confidence: 99%

See 1 more Smart Citation

Application of Satellite-Based Spectrally-Resolved Solar Radiation Data to PV Performance Studies

et al. 2015

View full text Add to dashboard Cite

In recent years, satellite-based solar radiation data resolved in spectral bands have become available. This has for the first time made it possible to produce maps of the geographical variation in the solar spectrum. It also makes it possible to estimate the influence of these variations on the performance of photovoltaic (PV) modules. Here, we present a study showing the magnitude of the spectral influence on PV performance over Europe and Africa. The method has been validated using measurements of a CdTe module in Ispra, Italy, showing that the method predicts the spectral influence to within ±2% on a monthly basis and 0.1% over a 19-month period. Application of the method to measured spectral responses of crystalline silicon, CdTe and single-junction amorphous silicon (a-Si) modules shows that the spectral effect is smallest over desert areas for all module types, higher in temperate Europe and highest in tropical Africa, where CdTe modules would be expected to yield +6% and single-junction a-Si modules up to +10% more energy due to spectral effects. In contrast, the effect for crystalline silicon modules is less than ±1% in nearly all of Africa and Southern Europe, rising to +1% or +2% in Northern Europe.

show abstract

“…A single spectral index is not enough to guarantee the spectral uniqueness, as is proved above in the paragraph 4.2.1, but it can be valid under certain dispersion thresholds (Minemoto et al 2009;M. Norton, Amillo, and Galleano 2015).…”

Section: Spectral Indexes For Spectral Uniquenessmentioning

confidence: 99%

Contributions to characterization, modeling and design of concentrator photovoltaic systems

Júdez¹

View full text Add to dashboard Cite

AGRADECIMIENTOSEl presente documento de tesis resume un trabajo de investigación de los últimos cinco años y medio en el IES, lugar incomparable donde los haya para realizar dicha tarea. Es por ello que quiero hacer una lista de agradecimientos a las personas que con su contribución y apoyo me han llevado a poder completar este trabajo.Primeramente he de agradecer a Gabriel por liderar el grupo de investigación ISI, haciendo que trabajar en él sea un reto constante del que además de disfrutar se pueda aprender en todo momento. Y por contar conmigo al terminar el máster para realizar la tesis. Mención aparte es destacar su entendimiento de que aun siendo becarios se nos tenga que tratar tanto en responsabilidad como reconocimiento como investigadores y personas.Mi mayor gratitud científica es para Nacho, mi director. De quien más he aprendido y no solo de ingeniería y ciencia. Por supuesto, quiero destacar la paciencia recibida y el gran ojo para saber ver por dónde dirigir la investigación (y cómo presentarla). Jamás he visto a alguien que merezca más la expresión de ganarse los méritos por su esfuerzo. Espero que más profesores como él vayan obteniendo su lugar en la universidad pública española; algo de lo que todos nos beneficiaremos.A la gente del grupo ISI. En mayor medida a mis "hermanas y hermanos mayores científicos": César, Marta, Rebeca y Steve. Es un gran placer estar en un grupo humano de tanta valía, tanto personal, como científica e ingenieril (con especial mención a Marta y César, que siempre han tenido un comentario de calidad científica para algunas partes de esta tesis). A otros que pasaron por el grupo como Marisa y Valentín o acaban de llegar, Guido. A Guille, Loli y Almu, Fran, que hacen posible el trabajo de cada día. A todo el grupo, con quien compartir este viaje ha sido un gran placer.Sobre el IES solo puedo repetir lo que tantos otros que están o han estado han resaltado: el increíble ambiente humano que se refleja en el trabajo y en el día a día. Rosa, Miguel, Estrella, Zamorano, María Helena, Montse, Óscar, Olga. Ana, Luis, Mario, Jesús, Alba, Pablo, Pilar, Lorenzo, Quique, Alejandro, Esther, Dani, Jonathan, Laura, Javi, Iván, Vincenzo... Y los profesores del máster del IES, de los que tanto he aprendido sobre energía solar, física e ingeniería.Quiero incluir en estos agradecimientos también a los diferentes instituciones y empresas con los que he compartido proyectos e investigación, incluyendo a: ISFOC, SAV, Fraunhofer, Daido, BSQ, GFM, Soitec, ENEA, Universidad de Jaén, Abengoa, CEA, Martifer.Incluyo también en esta lista la red AERONET de la NASA, cuyos datos atmosféricos he utilizado y en especial los de la estación de Madrid mantenida por el AEMET.I would like to highlight an acknowledgment to the Quantum Photovoltaics Group at Imperial College London, in concrete to Ned and the team (Markus, Tom, Alex, Avi), where I had a very pleasant stay and I learnt other points of view always so necessary.A la comunidad de software libre, y en concreto a la de Python y sus librerías cientí...

show abstract

Comparison of solar spectral irradiance measurements using the average photon energy parameter

Cited by 58 publications

References 14 publications

Enhancement of a photovoltaic cell performance by a coupled cooled nanocomposite thermoelectric hybrid system, using extended thermodynamics

Enhancement of a photovoltaic cell performance by a coupled cooled nanocomposite thermoelectric hybrid system, using extended thermodynamics

Application of Satellite-Based Spectrally-Resolved Solar Radiation Data to PV Performance Studies

Contributions to characterization, modeling and design of concentrator photovoltaic systems

Contact Info

Product

Resources

About