Roadmap for the next-generation of hybrid photovoltaic-thermal solar energy collectors

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Title: Roadmap for the next-generation of hybrid photovoltaic-thermal solar energy collectors
Authors: Mellor, A
Alonso Alvarez, D
Guarracino, I
Ramos, A
Riverola Lacasta, A
Ferre Llin, L
Murrell, A
Paul, D
Chemisana, D
Markides, C
Ekins-Daukes, NJ
Item Type: Journal Article
Abstract: 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 domestic hot water provision, which together account for nearly 50% of heat demand. A roadmap is presented of 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. The most advanced hybrid technology along the roadmap employs an evacuated cavity, a transparent low-emissivity coating, and silicon heterojunction photovoltaic cells.
Issue Date: 1-Nov-2018
Date of Acceptance: 3-Sep-2018
ISSN: 0038-092X
Publisher: Elsevier
Start Page: 386
End Page: 398
Journal / Book Title: Solar Energy
Volume: 174
Copyright Statement: © 2018 The Authors. Published by Elsevier Ltd. This is a open access article under a CC-BY Attribution Licence 4.0 (
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
Engineering & Physical Science Research Council (E
Funder's Grant Number: EP/M025012/1
J15119 - PO:500174140
Keywords: 09 Engineering
12 Built Environment And Design
Publication Status: Published
Online Publication Date: 2018-09-20
Appears in Collections:Physics
Experimental Solid State
Chemical Engineering
Faculty of Natural Sciences

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