A low-cost and efficient solar/coal hybrid power generation mode: Integration of non-concentrating solar energy and air preheating process

Yu Han, Yingying Sun and Junjie Wu

Energy, 2021, vol. 235, issue C

Abstract: Solar-aided power generation (SAPG) is an effective method for achieving clean and efficient production of electricity. The unique characteristics of the non-concentrating solar energy and air preheating process open up a novel method for low-cost and efficient solar/coal hybrid power generation. In the proposed novel SAPG, non-concentrating solar energy achieves high solar-to-electricity efficiency by efficiently integrating it with the air preheating process. Additionally, the new system generates electricity at a low cost by applying non-concentrating solar collectors. The results reveal that based on a typical 1000 MW coal-fired power plant, the proposed SAPG generates 12.6 MWe of additional output power with a 0.57% increase in coal-based thermal efficiency, and reduces the exergy loss during the air preheating process by 36.6%. Owing to the low cost and efficient utilization of non-concentrating solar energy, the cost of solar-generated electricity of the proposed SAPG is only 47.4% of that of the conventional SAPG. The high thermal and economic performance of the proposed SAPG opens up a low-cost and efficient solar/coal hybrid power generation mode through the integration of non-concentrating solar energy and air preheating process.

Keywords: Solar-aided power generation; Non-concentrating solar energy; Air preheating process; Thermodynamic analysis; Economic analysis (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (7)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:235:y:2021:i:c:s0360544221016157

DOI: 10.1016/j.energy.2021.121367

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