PHOTON: Photo voltaic PV and Photo voltaic Thermal Come Collectively in a Pioneering Venture

Typically, whereas crossing a plain by automobile, we are able to see what seems like a totem surrounded by a legion of adorers. It is likely one of the least frequent, however with nice potential, renewable energies: photo voltaic thermal vegetation.

Surrounded by 1000’s of mirrors, technically referred to as heliostats, they focus warmth in a single level, attaining temperatures north of 1000 C levels. This warmth is used to heat a salt-based fluid that, as soon as liquified, is pumped right into a warmth exchanger. As soon as inside that deposit, it transfers warmth to water to provide steam and transfer a turbine. Though most of those vegetation are primarily based on easy applied sciences comparable to steam generators, discovering the optimum settings and supplies is an actual engineering problem. Thus, effectivity remains to be a pending difficulty.  

Throughout the present alternate options accessible, which embrace parabolic trough concentrators and Stirling discs, central-tower photo voltaic vegetation are nonetheless essentially the most promising know-how. PHOTON, an revolutionary technological challenge codeveloped by ACCIONA Industrial, might imply one other step within the optimization of the present programs.

The goal of PHOTON is to enhance the effectivity of those photo voltaic vegetation by 10-15% with services that present {an electrical} output between 50 MW and 150 MW. The latter would show to be really revolutionary as the principle difficulty with this know-how is its lack of scalability. That is as a result of excessive vitality loss incurred by the heliostats positioned additional away from the principle tower. Subsequently, one of many most important areas of improvement within the challenge is the development of heliostats by utilizing a hybrid wi-fi solar-PV system. On this method, every heliostat could have the flexibility to self-calibrate by utilizing its personal vitality. The brand new reflective programs are anticipated to be lighter and simpler to put in, because the won’t require any cables or foundations. Presently, half of the event value of a photo voltaic thermal plant goes to the heliostats. Any enchancment in these parts is thus sure to enhance the profitability of those initiatives.  

One other aim for PHOTON is to develop an optimized central tower mannequin by fulfilling these necessities: acquiring the identical vitality output with a smaller receptor (by lowering the uncovered floor and the receptor’s prices) or rising the vitality output whereas sustaining the dimensions of present receptors.

Apart from ACCIONA Industrial, the “PHOTON: Excessive-performance photo voltaic thermal energy vegetation primarily based on hybrid Photo voltaic-PV heliostats and tailormade collectors” challenge has a number of main companions, together with Tewer (Spain), Aalborg CSP (Denmark), Utilized Analysis Institute F (Lithuania) and Fashionable E-Applied sciences (Lithuania). The EUREKA community and the European Fee, in addition to the Spanish CDTI (Centre for the Improvement of Industrial Expertise) are funding PHOTON with a two million-euro finances. The new prototypes will enter the testing stage by late 2019.



ACCIONA photo voltaic thermal all over the world

Presently, ACCIONA Industrial is constructing its first photo voltaic thermal plant in Latin America, the 100 MW Cerro Dominador challenge, in collaboration with Abengoa. ACCIONA Industrial can be engaged on a parabolic trough plant in Kathu (South Africa) for Engie, partnering with Sener. This is able to be certainly one of its newest thermal solar energy vegetation along with the already accomplished energy stations in Bokpoort (South Africa) and Noor I (Morocco).

Supply:  ACCIONA

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