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Thermodynamic limits for solar energy conversion by a quantum-thermal hybrid systemThe limits are presented fo air mass 1.5 conditions. A maximum conversion efficiency of 74 percent is thermodynamically achievable for the quantum device operating at 3500 K and the heat engine in contact with a reservoir at 0 K. The efficiency drops to 56 percent for a cold reservoir at approximately room temperature conditions. Hybrid system efficiencies exceed 50 percent over receiver temperatures ranging from 1400 K to 4000 K, suggesting little benefit is gained in operating the system above 1400 K. The results are applied to a system consisting of a photovoltaic solar cell in series with a heat engine.
Document ID
19820010821
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Byvik, C. E. (NASA Langley Research Center Hampton, VA, United States)
Buoncristiani, A. M. (NASA Langley Research Center Hampton, VA, United States)
Smith, B. T. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 4, 2013
Publication Date
November 1, 1981
Subject Category
Energy Production And Conversion
Report/Patent Number
NASA-TM-83229
Accession Number
82N18695
Funding Number(s)
PROJECT: RTOP 506-55-13-03
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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