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Title: Optical and heat transfer performance of a novel non-imaging concentrator

In this study, the Crossed Compound Parabolic Concentrator CCPC is modified to demonstrate for the first time a new generation of solar concentrators working simultaneously as an electricity generator and thermal collector. It is designed to have two complementary surfaces, one reflective and one absorptive, and is called an absorptive/reflective CCPC (AR-CCPC). Usually, the height of the CCPC is truncated with a minor sacrifice of the geometric concentration. These truncated surfaces rather than being eliminated are instead replaced with absorbent surfaces to collect heat from solar radiation. The optical, thermal and total efficiency of the AR-CCPC was simulated and compared for different geometric concentration ratios varying from 3.6x to 4x. It was found that the combined electrical and thermal efficiency of the AR-CCPC 3.6x/4x remains constant and high all day long and the overall efficiency reach up to 94%. In addition, the temperature distributions of AR-CCPC surfaces and the assembled solar cell were simulated based on those heat flux boundary conditions. It shows that the adding of thermal absorbent surface can apparently increase the wall temperature.
Authors:
;  [1] ;  [1] ;  [2] ;  [3] ;  [4]
  1. Environment and Sustainability Institute, University of Exeter, Penryn, TR10 9FE (United Kingdom)
  2. (China)
  3. School of Energy Science & Engineering, Harbin Institute of Technology, Harbin 15001 (China)
  4. School of Engineering, University of Glasgow, James Watt South Building, Glasgow G12 8QQ, Scotland (United Kingdom)
Publication Date:
OSTI Identifier:
22489022
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1679; Journal Issue: 1; Conference: CPV-11: 11. international conference on conventrator photovoltaictaic systems, Aix-les-Bains (France), 13-15 Apr 2015; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; ABSORBENTS; COMPARATIVE EVALUATIONS; CONCENTRATION RATIO; DESIGN; ELECTRICITY; HEAT; HEAT FLUX; HEAT TRANSFER; SOLAR CELLS; SOLAR CONCENTRATORS; SOLAR RADIATION; SURFACES; TEMPERATURE DISTRIBUTION; THERMAL EFFICIENCY