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Improving the Performance of Concentrating PV by Exploiting the Excess Heat through a Low Temperature Supercritical Organic Rankine Cycle

Objective

In concentrating photovoltaic systems (CPV) the incident solar radiation is multiplied by a factor equal to the concentration ratio. The electricity production per cell area is increasing almost linear with the concentration ratio. Concentration on PV cells surface, directly results in a proportional temperature increase, deteriorating the performance of the cells. To cope with this effect, in some configurations the cells are cooled and the removing heat is then used for other purposes, like for domestic hot water production, resulting in a CPV/Thermal (CPV/T) configuration. On the other hand, Organic Rankine Cycle (ORC) is one the most efficient technologies to convert heat to power. The proposed innovative concept deals with the conversion of that CPV/T heat to additional electricity through the Supercritical ORC (SCORC) process. SCORC is selected because enjoys better efficiencies at low temperatures in comparison to Subcritical ORC. This integrated CPV/T-SCORC system minimizes the temperature effect on the PV cells performance and improves the annual energy productivity (in kWh/kWp). In comparison to a flat PV system a performance improvement between 15-40% is anticipated, depending on the season, along with a more efficient heat transfer from the CPV/T system to the Rankine process (i.e. lower pinch point), due to the supercritical cycle. The aim of the proposed project is to extensively study this integrated process and to develop, construct and test a hybrid CPV/T- SCORC system of 14 kWp, where CPV/T heat is effectively recovered by the SCORC process for electricity generation. A significant reduction of specific electricity cost is anticipated, reaching 0.12 €/kWh by the end of the project and around 0.10 €/kWh by 2016, making the current technology competitive in the PV market and increasing significantly the competitiveness and business cycle of the involved SMEs.

Field of science

  • /social sciences/economics and business/business and management/commerce
  • /engineering and technology/electrical engineering, electronic engineering, information engineering/electrical engineering/power engineering/electric power generation
  • /social sciences/economics and business
  • /natural sciences/earth and related environmental sciences/atmospheric sciences/meteorology/solar radiation
  • /social sciences/economics and business/economics/production economics/productivity

Call for proposal

FP7-SME-2012
See other projects for this call

Funding Scheme

BSG-SME - Research for SMEs

Coordinator

GEOPONIKO PANEPISTIMION ATHINON
Address
Iera Odos 75
118 55 Athina
Greece
Activity type
Higher or Secondary Education Establishments
EU contribution
€ 61 760
Administrative Contact
Dimitris Manolakos (Dr.)

Participants (6)

STIFTELSEN FOR FORSKNING OM KONCENTRERAD SOLENERGI
Sweden
EU contribution
€ 10 720
Address
Matrosgatan 5
87133 Harnosand
Activity type
Other
Administrative Contact
Olof Bjorkqvist (Mr.)
CENTRO DE INVESTIGACIONES ENERGETICAS, MEDIOAMBIENTALES Y TECNOLOGICAS-CIEMAT
Spain
EU contribution
€ 8 987
Address
Avenida Complutense 40
28040 Madrid
Activity type
Research Organisations
Administrative Contact
Ana Collados Martín-Posadillo (Ms.)
UNIVERSITEIT GENT
Belgium
EU contribution
€ 9 600
Address
Sint Pietersnieuwstraat 25
9000 Gent
Activity type
Higher or Secondary Education Establishments
Administrative Contact
Margo Baele (Dr.)
C.BOUZIANAS - D.MOSCHOVITIS & CO EE
Greece
EU contribution
€ 293 340
Address
Saint George Square Kipseli 10
11257 Athina
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
Administrative Contact
Constantinos Bouzianas (Mr.)
SISTEMAS DE CALOR SL
Spain
EU contribution
€ 406 343,50
Address
Calle Marmolistas - Poligono Algaid 13
04740 Roquetas De Mar
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
Administrative Contact
Miguel Angel Moya (Mr.)
DECONINCK NV
Belgium
EU contribution
€ 160 800
Address
Legen Heirweg 43
9890 Gavere
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
Administrative Contact
Geert Deconinck (Mr.)