The main objective of the European Project SUN-to-LIQUID is the scale-up and experimental demonstration of the complete process chain to solar liquid fuels from H2O and CO2. This implies moving from a 4 kW laboratory setup to a pre-commercial plant including a heliostat field. The small power and high irradiance onto the focal spot is forcing the optical design to behave half way between a large solar furnace and an extremely small central receiver system. The customized heliostat field makes use of the most recent developments on small size heliostats and a tower with reduced optical height (15 m) to minimize visual impact. A heliostat field of 250kWth (500 m2 reflective surface) has been built adjacent to IMDEA Energy premises at the Technology Park of Móstoles, Spain, and consists of 169 small size heliostats (1.9 m × 1.6 m). In spite of the small size and compactness of the field, when all heliostats are aligned, it is possible to fulfil the specified flux above 2500 kW/m2 for at least 50 kW and an aperture of 16 cm, with a peak flux of 3000 kW/m2.
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Research Article| June 27 2017
Ultra-modular 500m2 heliostat field for high flux/high temperature solar-driven processes
AIP Conf. Proc. 1850, 030044 (2017)
Manuel Romero, José González-Aguilar, Salvador Luque; Ultra-modular 500m2 heliostat field for high flux/high temperature solar-driven processes. AIP Conf. Proc. 27 June 2017; 1850 (1): 030044. https://doi.org/10.1063/1.4984387
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