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

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  • Han, Yu
  • Sun, Yingying
  • Wu, Junjie

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.

Suggested Citation

  • Han, Yu & Sun, Yingying & Wu, Junjie, 2021. "A low-cost and efficient solar/coal hybrid power generation mode: Integration of non-concentrating solar energy and air preheating process," Energy, Elsevier, vol. 235(C).
    • Handle: RePEc:eee:energy:v:235:y:2021:i:c:s0360544221016157
    DOI: 10.1016/j.energy.2021.121367
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    2. Wang, Di & Han, Xinrui & Li, Haoyu & Li, Xiaoli, 2023. "Dynamic simulation and parameter analysis of solar-coal hybrid power plant based on the supercritical CO2 Brayton cycle," Energy, Elsevier, vol. 272(C).
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