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Title: Combined heat and power generation with a HCPV system at 2000 suns

This work shows the development of an innovative solar CHP system for the combined production of heat and power based upon HCPV modules working at the high concentration level of 2000 suns. The solar radiation is concentrated on commercial InGaP/InGaAs/Ge triple-junction solar cells designed for intensive work. The primary optics is a rectangular off-axis parabolic mirror while a secondary optic at the focus of the parabolic mirror is glued in optical contact with the cell. Each module consist of 2 axis tracker (Alt-Alt type) with 20 multijunction cells each one integrated with an active heat sink. The cell is connected to an active heat transfer system that allows to keep the cell at a high level of electrical efficiency (ηel > 30 %), bringing the heat transfer fluid (water and glycol) up to an output temperature of 90°C. Accordingly with the experimental data collected from the first 1 kWe prototype, the total amount of extracted thermal energy is above the 50% of the harvested solar radiation. That, in addition the electrical efficiency of the system contributes to reach an overall CHP efficiency of more than the 80%.
Authors:
; ;  [1] ; ; ; ; ;  [2] ; ;  [2] ;  [3] ; ;  [4]
  1. IDEA s.r.l., C.da Molara Z.I. III Fase, 90018 Termini Imerese (Italy)
  2. Dipartimento di Fisica e Chimica, Università di Palermo, Via Archirafi 36, 90123 Palermo (Italy)
  3. (Italy)
  4. INAF, Osservatorio Astronomico di Palermo, Piazza del Parlamento 1, 90134 Palermo (Italy)
Publication Date:
OSTI Identifier:
22489018
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; CONCENTRATION RATIO; DESIGN; ELECTRIC CONTACTS; GALLIUM ARSENIDES; GLYCOLS; HEAT; HEAT SINKS; HEAT TRANSFER; HEAT TRANSFER FLUIDS; INDIUM ARSENIDES; OPTICS; PHOTOVOLTAIC CONVERSION; PHOTOVOLTAIC POWER PLANTS; POWER GENERATION; SOLAR CELLS; SOLAR RADIATION; SUN