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Ponencia
Cloud transient characterization in different time steps
(American Institute of Physics Inc., 2017-06)
In this paper we evaluate the cloud transients by analyzing the dynamics of the direct fraction index kb for one year of solar radiation data in different time steps. We use instant 5-sec data integrated data and compare ...
Ponencia
Economical and environmental analysis of thermal and photovoltaic solar energy as source of heat for industrial processes
(American Institute of Physics Inc., 2017-06)
Thermal energy for industrial processes can be generated using thermal (ST) or photovoltaic (PV) solar energy. ST energy has traditionally been the most favorable option due to its cost and efficiency. Current costs ...
Ponencia
Conditions in which a photovoltaic system is more viable than a low-temperature solar thermal system.
(EUPVCEC, 2016)
Photovoltaic (PV) and low-temperature solar thermal (LT-STH) are the most widely used technologies in the building sector. This study determines, depending on the most influential parameters, the conditions in which a PV ...
Ponencia
Use of Phase Change Materials in Photovoltaic Modules with Solar Concentration Up to 2X
(EUPVCEC, 2011)
Module efficiency depends of the irradiance level and its temperature. Module temperature depends of ambient temperature, irradiance, thermal characteristic of the module, surrounding of the module, and the direction ...
Ponencia
Reliability of photovoltaic solar systems through real O&M follow-up data
(EUPVCEC, 2016)
This paper provides a detailed analysis of failures and incidents that occurred in 218 PV systems, in 24 PV plants and 17 PV parks, for 15 months of performance, located in Spain and Italy. The results show that ...
Ponencia
Comparative analysis of domestic water heating thermosiphon systems tested according to the Standard ISO 9459-2
(International Solar Energy Society, 2014)
The Standard ISO 9459-2 is a standard for the characterization of thermal performance of domestic water heating systems without auxiliary heating. In this study, 18 domestic water heating thermosiphon systems have been ...
Ponencia
Experimental evaluation of the solar radiation gains over photovoltaic cells due to the use of tio2 treated surfaces. Applications to photovoltaic systems with micro-inverters
(EUPVCEC, 2016)
In building integrated photovoltaic (PV) systems, the reflection of the solar radiation by the walls of the buildings may cause a non-uniform distribution of the incident radiation on the different PV modules. However, by ...
Ponencia
Impact of the intra-day variability of the DNI on the energy yield of CSP plants
(American Institute of Physics Inc., 2019-07)
The operation and the electricity yield of CSP plants in two days with the same daily-accumulated DNI, even with the same Aperture Normal Irradiance (ANI) can be very different depending on other parameters such as the ...
Artículo
Assessment of a Global-to-Direct empirical model for the long-term characterization of Direct Normal Insolation
(Elsevier, 2014)
The statistical characterization of the solar resource (direct normal solar radiation) is a key point in the initial phases of a solar thermal electricity (STE) plant project. Ideally, this characterization should be based ...
Artículo
The variable geometry central receiver system concept. First results and comparison with conventional central receiver systems
(Elsevier, 2014)
In line with the global trend for improving efficiency of existing solar power plants, the CTAER has developed and built a variable geometry central receiver facility, in which the solar field rotates around the tower ...