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Title: Internally-heated thermal and externally-cool photovoltaic cascade solar energy system for full solar spectrum utilization

A single-stack, solar power receiver comprising both a thermal absorber layer and a photovoltaic cell layer. The stack includes an aerogel layer, that is optically transparent and thermally insulating ("OTTI"); a spectrally selective high thermal conductivity ("SSTC") thermal absorber layer; a bottom OTTI layer; and a PV cell layer. The SSTC layer includes a set of fins that substantially blocks solar radiation absorption in the band where PV cells are most sensitive. Photons with energies above or below this band block range are absorbed by the fins and the absorbed heat is conducted to pipes in the fin structure carrying a heated thermal working fluid to heat storage. Photons with energy in the band block range are reflected by the SSTC fins to the PV cell layer. The bottom OTTI aerogel layer keeps the PV cell operating near ambient temperature. The PV cell converts incident solar radiation to electrical energy.
Inventors:
; ; ; ; ; ; ; ; ; ;
Issue Date:
OSTI Identifier:
1469121
Assignee:
Massachusetts Institute of Technology (Cambridge, MA) EFRC
Patent Number(s):
10,043,932
Application Number:
14/464,103
Contract Number:
SC0001299; FG02-09ER46577; EE0005320
Resource Relation:
Patent File Date: 2014 Aug 20
Research Org:
Massachusetts Institute of Technology, Cambridge, MA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 42 ENGINEERING

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