Zobrazeno 1 - 10
of 82
pro vyhledávání: '"Daniela Fontani"'
Publikováno v:
SolarPACES Conference Proceedings, Vol 1 (2023)
The Scheffler reflector is a parabolic metal concentrator, typically applied in solar thermal systems with receiver fixed to the ground. The Scheffler mirror is deformed during the year to optimize its solar light collection. For practical reasons it
Externí odkaz:
https://doaj.org/article/57001e3672234e7c85d98c2b6fe0a10c
Autor:
Gianluca Marotta, Daniela Fontani, Franco Francini, David Jafrancesco, Maurizio De Lucia, Paola Sansoni
Publikováno v:
Energies, Vol 15, Iss 14, p 5293 (2022)
Profilometry is useful in detecting surface faults on solar concentrators, which can be imperfectly manufactured, thus affecting system performance. Profilometric analyses are performed on a micro-parabolic trough collector (m-PTC), with reduced size
Externí odkaz:
https://doaj.org/article/4fc57ab2f8f040d8942064060ebd1976
Publikováno v:
Energies, Vol 15, Iss 1, p 260 (2021)
The Scheffler type concentrator is a curved metal reflector particularly suitable for solar thermal systems with a receiver fixed to the ground. Its operating principle is to deform the reflector throughout the year to optimize its performance in col
Externí odkaz:
https://doaj.org/article/72380a803c864270a4f0db5054fbf342
Autor:
Gianluca Marotta, Paola Sansoni, Franco Francini, David Jafrancesco, Maurizio De Lucia, Daniela Fontani
Publikováno v:
Energies, Vol 13, Iss 21, p 5671 (2020)
In concentrating solar systems, it is essential to study the optical losses of the collectors. A fundamental parameter is the intercept factor, namely, the fraction of sunrays reflected by the concentrator that reaches the receiver. Optical profilome
Externí odkaz:
https://doaj.org/article/0656ca7fd72f4e27b117ee3efe35bc85
Autor:
Daniela Fontani, Paola Sansoni, Franco Francini, Matteo Messeri, Giacomo Pierucci, Maurizio DeLucia, David Jafrancesco
Publikováno v:
Energies, Vol 11, Iss 10, p 2659 (2018)
The electroluminescence test is an experiment typically used to verify the behavior of the photovoltaic cell and to qualitatively check its integrity. It works by operating the photovoltaic cell as a diode polarized directly: the cells that light up
Externí odkaz:
https://doaj.org/article/2a59a9438cdc407684d1d74310754d73
Publikováno v:
Energies, Vol 11, Iss 7, p 1621 (2018)
The aim of this study is to evaluate the changes of the spot shape on the target in dependence of the variations of size and faceting of a flat heliostat or an array of heliostats. The flat heliostat, or a flat heliostat array, is a layout common for
Externí odkaz:
https://doaj.org/article/9d9cfd41c5564728a5da638030f37cd4
Autor:
Paola Sansoni, Daniela Fontani, Franco Francini, David Jafrancesco, Giacomo Pierucci, Maurizio De Lucia
Publikováno v:
International Journal of Photoenergy, Vol 2015 (2015)
Outdoor experimentation of solar cells is essential to maximize their performance and to assess utilization requirements and limits. More generally tests with direct exposure to the sun are useful to understand the behavior of components and new mate
Externí odkaz:
https://doaj.org/article/3235d97db2954f7e8df944b9302cb05d
Publikováno v:
Materials, Vol 10, Iss 9, p 985 (2017)
The design and testing of LED lamps are vital steps toward broader use of LED lighting for outdoor illumination and traffic signalling. The characteristics of LED sources, in combination with the need to limit light pollution and power consumption, r
Externí odkaz:
https://doaj.org/article/54250c9f230b47b4a028405fe6ca3882
Autor:
Luca Mercatelli, David Jafrancesco, Franco Francini, Daniela Fontani, Elisa Sani, Stefano Coraggia, Marco Meucci, Paola Sansoni
Publikováno v:
International Journal of Photoenergy, Vol 2014 (2014)
A novel sustainable source was developed for an existing Italian lighthouse, exploiting the light emitting diode (LED) technology and the norms evolution. The research work started with the optical design of the device, while this work concerns the r
Externí odkaz:
https://doaj.org/article/14de5315f5be46bd92a395fc00cc6da8
Autor:
Paola Sansoni, Franco Francini, Daniela Fontani, Elisa Sani, Luca Mercatelli, David Jafrancesco
Publikováno v:
International Journal of Photoenergy, Vol 2013 (2013)
A heliostats field is an array of mirrors concentrating the solar power on a receiver, typically placed on a tower. Our research experience in the optical design of heliostats fields for Concentrating Solar Power plants suggested using apposite simul
Externí odkaz:
https://doaj.org/article/4ec48f18013a4856923e19b8d80e099d