TECNOLOGIA CPV: ENERGIA SOLARE CONCENTRATA

 

La tecnologia delle celle fotovoltaiche a concentrazione permette di generare a costi contenuti energia rinnovabile, pulita su scala sufficientemente grande per l’utilizzo pratico da parte delle aziende elettriche.
 
Incorporando economici sistemi ottici nei suoi impianti, Amonix è in grado di ridurre notevolmente la quantità di costosi materiali semiconduttori necessari per produrre ciascun watt di energia elettrica.
 
Negli impianti Amonix, efficaci ma economiche lenti di Fresnel in materiale acrilico concentrano la luce solare ricevuta, a un’intensità fino a 500 volte maggiore di quella usuale, su celle fotovoltaiche all’avanguardia, compatte e ad alta efficienza.
 
Le lenti sono fissate alla parte superiore di un telaio di acciaio rettangolare di 3 x 15 metri, con 30 celle fotovoltaiche montate su ciascuna delle placche riceventi situate sotto le lenti.
Ciascun MegaModule® Amonix contiene 36 set di lenti e corrispondenti placche riceventi, e produce circa 10 kW a corrente continua.

Mille volte in più di energia

A titolo di confronto, la tecnologia più vecchia della maggior parte dei pannelli solari piatti monolitici richiede che l’intera superficie sia coperta da costoso materiale semiconduttore per raccogliere una quantità sufficiente di luce solare.
 
Infatti, poiché la loro efficienza è notevolmente inferiore a quella delle celle multigiunzione Amonix, anche i pannelli al silicio più efficienti richiederebbero una quantità di materiale semiconduttore pari al doppio dell’aria di un intero impianto Amonix 7700 per generare una quantità equivalente di energia (in condizioni di prova standard).
 
Invece, nell’impianto Amonix il materiale semiconduttore III-V rappresenta solo un 1/500 dell’area totale dell’impianto.
 
In definitiva, ciò significa che l’energia generata dalla superficie coperta da materiale semiconduttore è circa mille volte maggiore di quella dei pannelli solari piatti monolitici dotati delle celle al silicio di generazione più vecchia (in condizioni di prova standard). Per le celle fotovoltaiche a film sottile, la differenza è ancora maggiore. 
 

 

  • 04/25/2013
    Amonix Achieves World Record for PV Module Efficiency in Test at NREL
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  • 02/25/2013
    Silicon Valley-based Solar Junction signs agreement with Amonix
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  • 12/20/2012
    The Alamosa Solar Generating Project Powered by Amonix Concentrator Photovoltaic Systems Named a Top Renewable Energy Project of the Year
    More Industry Recognition for CPV Technology at Utility Scale
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  • 04/30/2013
    CPV Intelligence Brief 17-30 April 2013
    PV-Insider.com
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    By ksdickson Apr 30, 2013
    Amonix converts 36% of direct sunlight into electricity

    Companies and organisations mentioned: Amonix, National Renewable Energy Laboratory, SolarJunction, Boeing Spectrolab 

    CPV Intelligence Brief 17 – 30 April 2013

    Amonix converts 36% of direct sunlight into electricity

    California-based Amonix, a designer and manufacturer of concentrator photovoltaic (CPV) solar power systems, has converted more than 36% of direct sunlight into electricity.

    A module showcasing Amonix’s latest-generation CPV technology has been in outdoor testing from late February to April of this year. During this period, the Amonix module demonstrated a peak operating efficiency of 36.2% measured on March 14, 2013 with a DNI of 876 W/m2, an ambient temperature of 16°C and instantaneous wind speed of 1 m/s, breaking the previous 34.2% peak efficiency set by Amonix in May 2012.

    Over the entire testing period, the Amonix module earned a National Renewable Energy Laboratory (NREL) outdoor efficiency rating of 34.9%, a new world record, under international standard operating conditions for concentrator photovoltaics of 900 W/m2, 20°C ambient temperature and 2m/s wind speed, breaking the previous 33.5% rated efficiency record also set by Amonix in May 2012.

    The module uses Boeing Spectrolab 40% high efficiency solar cells and Amonix’s proprietary CPV technology to achieve world record performance.

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  • 04/26/2013
    Amonix Achieves World Record for PV Module Efficiency in Test at NREL
    The Wall Street Journal
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    SEAL BEACH, Calif.--April 26, 2013--

    Amonix Inc., the leading designer and manufacturer of concentrator photovoltaic (CPV) solar power systems, announced today that it has successfully converted more than 36% of direct sunlight into electricity. A module showcasing Amonix's latest-generation CPV technology has been in outdoor testing from late February to April of this year. During this period, the Amonix module demonstrated a peak operating efficiency of 36.2% measured on March 14, 2013 with a DNI of 876 W/m(2) , an ambient temperature of 16degC and instantaneous wind speed of 1 m/s, breaking the previous 34.2% peak efficiency set by Amonix in May 2012.

    Over the entire testing period, the Amonix module earned a National Renewable Energy Laboratory (NREL) outdoor efficiency rating of 34.9%, a new world record, under international standard operating conditions for concentrator photovoltaics of 900 W/m(2) , 20degC ambient temperature and 2m/s wind speed, breaking the previous 33.5% rated efficiency record also set by Amonix in May 2012. The module uses Boeing Spectrolab 40% high efficiency solar cells and Amonix's proprietary CPV technology to achieve world record performance.

    This result continues Amonix's long history of leading the world in solar module efficiency, having been the first to convert over 1/3(rd) of the sun's energy in May 2012, and the first to break 30% module efficiency in 2011.

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  • 02/28/2013
    Amonix, Solar Junction Plot CPV Efficiency Gains, Lower Costs
    RenewableEnergyWorld.com
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    New Hampshire, USA -- The two current record-holders in concentrated solar PV (CPV) cell and module technology hope that combining efforts will boost performance, and lower costs, to finally fulfill CPV's promise of lower levelized cost of electricity (LCOE) compared with other solar technologies.

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  • 11/28/2012
    Western dreams: The Alamosa Solar project, the world's largest CPV plant
    Solar Server
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    The Western United States is a big place. The sheer scale of the landscape overwhelms; in many states you can drive hundreds of kilometers in any direction, through prairies, forests, mountains and deserts, without encountering a city.

    This land has always attracted ambitious individuals; after the Native Americans came trappers, prospectors for gold and silver, farmers, ranchers, those fleeing religious persecution, and more recently, hippies and entrepreneurs.

    In the Western state of Colorado, on the high prairie of the San Luis Valley, facing the wall of the San Juan Mountains, is one of the most ambitious solar projects yet undertaken. Above the rabbitbrush and greasewood are a series of 15 by 21 meter arrays of lenses, rising on hundreds of metal poles like an alien orchard.

    This is Cogentrix' Alamosa Solar project, the world's largest concentrating photovoltaic (CPV) project, which we bring you as Solar Server's November 2012 Solar Energy System of the Month.

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  • 11/14/2012
    Report: CPV could be 30% cheaper than PV by 2016
    PV Tech
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    Improved technology and decreasing costs could boost concentrated PV (CPV) installations to 3GW worldwide within four years, according to research.

    A report by IMS Research said that advances in CPV technology would drive down costs by 16% annually, prompting an increase in installations from today’s cumulative total of around 160MW to 3GW by 2016.

    “With companies such as Solar Junction breaking cell efficiency records and Amonix capable of producing 34.2% efficient commercial modules, and focused on driving down system prices, acceptance of CPV as a utility-scale generation method is predicted to accelerate,” said report co-author and IMS Research Analyst Jemma Davies.

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