RESEARCH ON OPTIMIZATION OF BIOGAS COGENERATION SYSTEM FOR FARMS BASED ON CHARACTERISTICS OF SUPPLY AND DEMAND COORDINATION

Fei Fan; Gao Liai; Zhang Ruiqiang; Zhou Jiadong; Wen Peng; Huo Limin

doi:10.19912/j.0254-0096.tynxb.2021-1493

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (4) : 231-237. DOI: 10.19912/j.0254-0096.tynxb.2021-1493

RESEARCH ON OPTIMIZATION OF BIOGAS COGENERATION SYSTEM FOR FARMS BASED ON CHARACTERISTICS OF SUPPLY AND DEMAND COORDINATION

Fei Fan^1,2, Gao Liai^1,2, Zhang Ruiqiang³, Zhou Jiadong³, Wen Peng^1,2, Huo Limin^1,2

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Abstract

Aiming at the problems of waste resource treatment and coordination and optimization between energy supply and demand in livestock farms under the two-carbon target, an optimal operation model was proposed which considered the coordination between energy supply characteristics and dynamic thermal demand of waste treatment facilities. Firstly, the relationship between the biogas production and the feeding volume is obtained according to the data fitting, and the mathematical model of the biogas cogeneration system is established with the internal combustion engine as the power system. Secondly, the dynamic heat load and balance model of the anaerobic tank is established, considering the influence of feeding volume, fermentation temperature and external environment temperature on the heat load demand. On this basis, considering the uncertainty of factors such as the feeding volume and the external environment temperature,an optimal operation model of the combined heat and power system is constructed, taking the maximum return of system investment as the objective function. Through reasonable adjustment of the feeding volume, the model realizes the optimal operating parameters of the equipment on the energy supply side and the energy requirements on the energy demand side. The results of the calculation examples show that the proposed optimized operation model realizes the economical improvement of the biogas cogeneration system, and promotes the effective use of waste heat in the meantime.

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bioenergy / biogas / anaerobic fermentation / cogeneration system / supply-demand relationship / optimization

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Fei Fan, Gao Liai, Zhang Ruiqiang, Zhou Jiadong, Wen Peng, Huo Limin. RESEARCH ON OPTIMIZATION OF BIOGAS COGENERATION SYSTEM FOR FARMS BASED ON CHARACTERISTICS OF SUPPLY AND DEMAND COORDINATION[J]. Acta Energiae Solaris Sinica. 2023, 44(4): 231-237 https://doi.org/10.19912/j.0254-0096.tynxb.2021-1493

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