Roadmap for the next-generation of hybrid photovoltaic-thermal solarenergy collectors
2018
Mellor, A. | Alonso Alvarez, D. | Guarracino, I. | Ramos, Alba | Riverola Lacasta, Alberto | Ferre Llin, L. | Murrell, A. J. | Paul, D. J. | Chemisana Villegas, Daniel | Markides, C. N. | Ekins-Daukes, N.
For hybrid photovoltaic-thermal collectors to become competitive with other types of solar energy converters, they must offer high performance at fluid outlet temperatures above 60°C, as is required for space heating and domestichot waterprovision, whichtogether accountfornearly50%ofheatdemand.Aroadmap ispresentedof the technological advances required to achieve this goal. Strategies for reducing convective, radiative and electrical losses at elevated temperature are discussed, and an experimental characterisation of a novel transparent low-emissivity coating for photovoltaic solar cells is presented. An experimentally-validated simulation formalism is used to project the performance of different combinations of loss-reduction strategies implemented together. Finally, a techno-economic analysis is performed to predict the price points at which the hybrid technologies along the roadmap become competitive with non-hybrid photovoltaic and solar thermal technologies. Themostadvanced hybridtechnology alongthe roadmapemploysanevacuated cavity,a transparent lowemissivity coating, and silicon heterojunction photovoltaic cells.
Show more [+] Less [-]This work was funded by the Engineering And Physical Science Research Council (EPSRC) grants High Temperature, High Efficiency PV-Thermal Solar System (EP/M025012/1) and Joint UK-India Clean Energy Centre (JUICE) (EP/P003605/1). A. Mellor was supported by the European Commission through Marie Sklodowska Curie International Fellowship, Grant No. DLV-657359.
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