Journal
ENERGY CONVERSION AND MANAGEMENT
Volume 173, Issue -, Pages 602-612Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.enconman.2018.06.012
Keywords
Solar photovoltaic/thermal; Spectral splitting; Methane reforming; Combined heating and power generation; Energy storage
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Funding
- National Key Research and Development Program of China [2016YFB0901401]
- National Natural Science Foundation of China [51676189]
- Chinese Academy of Sciences Frontier Science Key Research Project [QYZDY-SSW-JSC036]
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A spectral splitting photovoltaic-methane-steam-reforming hybrid system for heat and power cogeneration has been proposed. In the system, sunlight with wavelengths shorter than 870 nm is assigned to photovoltaic cells for direct power and heat cogeneration, while the rest of the solar spectrum is utilized by a methane-steam-reforming reactor via the route of solar thermal energy - chemical energy - heat and power. Analysis reveals that the hybrid system is characterized by high net solar-to-exergy efficiency (40%), high energy storage capability and low-emission energy supply (63% fossil energy saving and 77% carbon-dioxide emission reduction). Primary reasons underlying the excellent performance are full-spectrum optimized utilization of solar energy and comprehensive utilization among solar energy, thermal energy and chemical energy.
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