Search results for "photovoltaicS"

ARCHITETTURA E FOTOVOLTAICO: STRATEGIE E CRITERI D’INTEGRAZIONE. ARCHITECTURE AND PHOTOVOLTAICS: STRATEGIES AND INTEGRATION CRITERIA

2016

Nonostante i numerosi esempi positivi offerti dal panorama architettonico degli ultimi due decenni, alcuni studi hanno dimostrato come esistano ancora delle barriere che limitano l’impiego del fotovoltaico (FV) negli edifici e come spesso queste riguardino aspetti legati all’accettazione delle soluzioni utilizzate, specialmente sul piano della qualità architettonica. Il presente lavoro descrive e analizza alcuni dei numerosi esempi di nuova costruzione o retrofit, nei quali il FV diventa parte integrante del processo progettuale, non solo per gli aspetti concernenti la produzione di energia ma anche per quelli propriamente legati alla funzionalità dell’involucro edilizio, all’efficienza ene…

Integration of Dye-Sensitized Solar Cells with Glassblock

2012

The paper will show the first results of a research (included in a larger work about the Improvement of glassblocks performance in order to use them for the construction of sustainable translucent building envelops even in Mediterranean and Tropical Areas) aimed to the integration of glassblock with the DSC technology. Glassblock is a high-performance type of glass in the field of sustainable architectural claddings: the process of deposition of the cells on the single glassblock, their best position and the performance of this new kind of glassblock, DSC integrated, will be discussed in the paper in terms of transmittance, light transmission and aesthetical effects, together with the probl…

“Hypotheses of Integration of DSC into the Glassblock for teh Construction of Translucent Building Envelope”

2012

New configurations of the glassblock have been designed at the Department of Architecture of the University of Palermo in order to reduce its U value responding to the latest national and international regulation limits for the thermal insulation of the buildings with glass façades. One of these new configurations consists in the insertion of a special plastic "belt" between the two glass shells composing the glassblock, which have to be glued to it (cold assembly); the plastic belt effectively interrupts the thermal bridge between the two glass shells. Thanks to the particular design of its shape, the "thermal belt" can be also used for the insertion of one or more additional sheets of dif…

The recent change in the Italian policies for photovoltaics: Effects on the payback period and levelized cost of electricity of grid-connected photov…

2015

Abstract This paper provides an economic analysis of the investment in grid-connected PV (photovoltaic) systems installed on the rooftops of buildings located in densely urbanised contexts. The analysis was applied to some case studies that were selected as representative of the latitudes of the southern, central and northern Italy. The returns of the investment in PV systems were investigated with the aim of comparing the impact of the current PV policy, based on the tax credit scheme, with the FIT (feed-in tariff) scheme, in force until July 2013. The cash flows related to the disbursements and benefits during the lifetime of the investment were computed for each combination of orientatio…

CIGS Thin Film by One-Step Electrodeposition Deposition for Solar Cells

2013

Assessing the Economic Benefit due to BESS Management in a Renewable Energy Community of a Small Island

2022

The paper presents a study carried out on the island of Pantelleria regarding the interaction among distributed energy resource and energy storage systems in renewable energy communities. EU, in the Clean Energy Package, defines the 'Jointly acting renewables self-consumers' (JARSCs) and the 'Renewable Energy Communities' (RECs) as innovative models to share energy from renewables facilities. Nevertheless, the behaviour of JARSCs and RECs is designed to maximize the final users' self-consumption without considering the impacts on the power grid operation. A comparison of various operational strategies of BESS and an investigation of their effect on the distribution network are key elements …

Quantifying the trade-off between useful and parasitic absorption of light for plasmonic light trapping in thin silicon films

2016

We apply a combination of photocurrent and photothermal spectroscopic techniques to experimentally quantify the trade-off between useful and parasitic absorption of light in thin hydrogenated microcrystalline silicon (?c-Si:H) films incorporating self-assembled silver nanoparticle arrays, located at the rear side, for improved light trapping via resonant plasmonic scattering. The photothermal technique is used to measure the total absorptance while the photocurrent spectroscopy accounts only for the photons absorbed in the ?c-Si:H layer (useful absorptance); therefore, the method allows for independent quantification of the useful and parasitic absorptance of the plasmonic (or any other) li…

Non-uniform doping concentration CIGS absorber profile for highefficiency solar cells

2016

The quaternary chalcopyrite semiconductor alloy Cu(In,Ga)Se2 (CIGS) is nowadays commonly considered one of the most suitable materials to fabricate cost-effective and high-efficiency photovoltaic cells. Thanks to the optical and structural properties of the absorber layer and to the tunable bandgap, thin-film CIGS cells have reached efficiencies around 20%, not far from the maximum values of traditional crystalline silicon cells. This high efficiency, together with the conceivable low fabrication costs, makes CIGS cells a promising alternative to silicon technology for large-scale production. In order to further improve the cells performance, in a previous work we have already proposed a si…

Performance assessment of a grid-connected mc-Si PV system made up of silicon material from different manufacturing routes

2013

Summarises the performance of an Elkem Solar photovoltaic (PV) system installed in the Sunbelt Region (between 35 North and 35 South) in Hyderabad, India, which has been fully operational since August 2012. The PV system consists of 28 multicrystalline silicon PV modules made from the standard Siemens process and from material produced by a metallurgical route - the Elkem Solar Silicon (ESS™) process. A comparative performance study of the ESS™ modules with respect to standard polysilicon has been carried out under the various climatic and solar radiation conditions at the location. The present study suggests that the ESS™ PV modules have a slightly better performance than standard polysili…

Review of photovoltaic status in a European (EU) perspective

2011

In the EU continent, a generation cost around 0.15€/kWh has been achieved [1]. Around the world, there is a mission to stimulate this green source of energy and it is believed that by 2030, PV will be able to deliver around 9 % of the world's electricity demands. According to an International Energy Agency (IEA) report [2], it is expected that PV will accomplish grid parity in at least 10% of the world by 2020. There was a significant 60 % annual growth in the grid connected PV systems in the span of 2004–2009 [3]. The present article will bring out the status & review of PV technology and the details of PV system standards as suggested by IEA. In the present paper, the main attention has b…