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Modeling and simulation of a novel combined heat and power system with absorption heat pump based on solar thermal power tower plant

Author

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  • Li, Xing
  • Wang, Zhifeng
  • Yang, Ming
  • Yuan, Guofeng

Abstract

In this paper a novel solar combined heat and power (CHP) system incorporating absorption heat pump (AHP) driven by mid-temperature solar heat and exhaust heat is proposed to improve solar energy utilization and electricity power generation. To validate thermodynamic performance of the proposed system, a case study is carried out based on 1 MW solar tower power plant located in Beijing. Depending on the well-developed mathematical model in accordance with actual equipment, the relevant module is coded in TRNSYS application environment. Besides, control and operation strategy is deeply analyzed to efficiently utilize solar energy with principal of cascade utilization. The dynamic simulation effectively predicts thermodynamic performance under the different operation modes in a typical winter day. Results indicate that flexible heating supply of the proposed system can meet well with user-generated heating loads. The AHP system recovers the condensate heat of 914 MJ with the average COP of 1.52. The proposed system generates the additional power of 217 kWh due to the regenerative cycle. Accompanying with power generation of 6214 kWh and useable thermal energy of 14502 MJ of the proposed system, the overall utilization efficiency of solar energy is up to 15.96% with the increase of 4.55 percentages.

Suggested Citation

  • Li, Xing & Wang, Zhifeng & Yang, Ming & Yuan, Guofeng, 2019. "Modeling and simulation of a novel combined heat and power system with absorption heat pump based on solar thermal power tower plant," Energy, Elsevier, vol. 186(C).
    • Handle: RePEc:eee:energy:v:186:y:2019:i:c:s0360544219315142
    DOI: 10.1016/j.energy.2019.07.172
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    Cited by:

    1. Kotarela, Faidra & Kyritsis, Anastasios & Agathokleous, Rafaela & Papanikolaou, Nick, 2023. "On the exploitation of dynamic simulations for the design of buildings energy systems," Energy, Elsevier, vol. 271(C).
    2. Zhang, Hongsheng & Liu, Xingang & Hao, Ruijun & Liu, Chengjun & Liu, Yifeng & Duan, Chenghong & Qin, Jiyun, 2022. "Thermodynamic performance study on gas-steam cogeneration systems with different configurations based on condensed waste heat utilization," Energy, Elsevier, vol. 250(C).
    3. Zhang, Hongsheng & Liu, Xingang & Liu, Yifeng & Duan, Chenghong & Dou, Zhan & Qin, Jiyun, 2021. "Energy and exergy analyses of a novel cogeneration system coupled with absorption heat pump and organic Rankine cycle based on a direct air cooling coal-fired power plant," Energy, Elsevier, vol. 229(C).
    4. Ma, Zhangke & Li, Yingjie & Zhang, Wan & Wang, Yuzhuo & Zhao, Jianli & Wang, Zeyan, 2020. "Energy storage and attrition performance of limestone under fluidization during CaO/CaCO3 cycles," Energy, Elsevier, vol. 207(C).
    5. Zhang, Dong & Zhang, Rui & Zhang, Bin & Zheng, Yu & An, Zhoujian, 2023. "Environment dominated evaluation modeling and collocation optimization of a distributed energy system based on solar and biomass energy," Renewable Energy, Elsevier, vol. 202(C), pages 1226-1240.
    6. Xie, Shutao & Qin, Peijia & Zhang, Mingliang & Xu, Jisong & Ouyang, Tiancheng, 2022. "A high-efficiency and eco-friendly design for coal-fired power plants: Combined waste heat recovery and electron beam irradiation," Energy, Elsevier, vol. 258(C).

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