Carbon emission reduction analysis of CHP system driven by biogas based on emission factors
The cogeneration system of heat, power, and biogas (CHPB) driven by renewable energy provides an effective solution for carbon emission reduction in rural China. Starting from fully meeting the energy demand of 17 new rural residential households in Lanzhou, considering the annual dynamic local clim...
| Main Authors: | , , , , , , |
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| Format: | Article |
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KeAi Communications Co., Ltd.
2023-10-01
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| Series: | Energy and Built Environment |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666123322000356 |
| _version_ | 1797817048116494336 |
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| author | Dong Zhang Rui Zhang Yu Zheng Bin Zhang Yuzhan Jiang Zhoujian An Jianhua Bai |
| author_facet | Dong Zhang Rui Zhang Yu Zheng Bin Zhang Yuzhan Jiang Zhoujian An Jianhua Bai |
| author_sort | Dong Zhang |
| collection | DOAJ |
| description | The cogeneration system of heat, power, and biogas (CHPB) driven by renewable energy provides an effective solution for carbon emission reduction in rural China. Starting from fully meeting the energy demand of 17 new rural residential households in Lanzhou, considering the annual dynamic local climate change, energy consumption characteristics, and environment parameters, a model of environmental benefit index for the CHPB system is constructed. The concept of emission factor is used to quantitatively analyze the environmental benefits of the system. The equivalent CO2 emission factor is defined to connect emissions with energy output, evaluating the environment-friendly potential of energy supply system. Compared with the conventional systems of independent power and thermal generation, the year-round characteristics of CO2 emission and emission structure chart of the proposed system are analyzed. The results show that the total CO2 emission and the average equivalent CO2 emission factors of the conventional and CHPB system are 85.45t, 1.53 kg/kWh, and 308.46t, 0.22 kg/kWh, respectively. The maximum CO2 emission reduction ratio of the CHPB system is 113.47%. Anaerobic digestion technology is employed to consume biomass feedstock, which reduced CH4 emission (equivalent to 86.36t of CO2 emission reduction). Five typical cities were selected to study the regional adaptability of the system and analyze environmental benefits. The results indicate that the CHPB system has the best environmental performance in Guangzhou, where the average CO2 emission reduction rate is 103.52%. |
| first_indexed | 2024-03-13T08:46:39Z |
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| id | doaj.art-feacffd55a654fe4aff4c8991813d230 |
| institution | Directory Open Access Journal |
| issn | 2666-1233 |
| language | English |
| last_indexed | 2024-03-13T08:46:39Z |
| publishDate | 2023-10-01 |
| publisher | KeAi Communications Co., Ltd. |
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| series | Energy and Built Environment |
| spelling | doaj.art-feacffd55a654fe4aff4c8991813d2302023-05-30T04:05:37ZengKeAi Communications Co., Ltd.Energy and Built Environment2666-12332023-10-0145576588Carbon emission reduction analysis of CHP system driven by biogas based on emission factorsDong Zhang0Rui Zhang1Yu Zheng2Bin Zhang3Yuzhan Jiang4Zhoujian An5Jianhua Bai6School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, China; Key Laboratory of Complementary Energy System of Biomass and Solar Energy, Lanzhou, Gansu 730050, China; China Northwestern Collaborative Innovation Center of Low-carbon Urbanization Technologies, Lanzhou 730050, China; Corresponding author at: School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, China.School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, China; Key Laboratory of Complementary Energy System of Biomass and Solar Energy, Lanzhou, Gansu 730050, China; China Northwestern Collaborative Innovation Center of Low-carbon Urbanization Technologies, Lanzhou 730050, ChinaSchool of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, China; Key Laboratory of Complementary Energy System of Biomass and Solar Energy, Lanzhou, Gansu 730050, China; China Northwestern Collaborative Innovation Center of Low-carbon Urbanization Technologies, Lanzhou 730050, ChinaSchool of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, China; Key Laboratory of Complementary Energy System of Biomass and Solar Energy, Lanzhou, Gansu 730050, China; China Northwestern Collaborative Innovation Center of Low-carbon Urbanization Technologies, Lanzhou 730050, ChinaSchool of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, China; Key Laboratory of Complementary Energy System of Biomass and Solar Energy, Lanzhou, Gansu 730050, China; China Northwestern Collaborative Innovation Center of Low-carbon Urbanization Technologies, Lanzhou 730050, ChinaSchool of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, ChinaState Grid Gansu Electric Power Company Electric Power Research Institute, Lanzhou 730050, ChinaThe cogeneration system of heat, power, and biogas (CHPB) driven by renewable energy provides an effective solution for carbon emission reduction in rural China. Starting from fully meeting the energy demand of 17 new rural residential households in Lanzhou, considering the annual dynamic local climate change, energy consumption characteristics, and environment parameters, a model of environmental benefit index for the CHPB system is constructed. The concept of emission factor is used to quantitatively analyze the environmental benefits of the system. The equivalent CO2 emission factor is defined to connect emissions with energy output, evaluating the environment-friendly potential of energy supply system. Compared with the conventional systems of independent power and thermal generation, the year-round characteristics of CO2 emission and emission structure chart of the proposed system are analyzed. The results show that the total CO2 emission and the average equivalent CO2 emission factors of the conventional and CHPB system are 85.45t, 1.53 kg/kWh, and 308.46t, 0.22 kg/kWh, respectively. The maximum CO2 emission reduction ratio of the CHPB system is 113.47%. Anaerobic digestion technology is employed to consume biomass feedstock, which reduced CH4 emission (equivalent to 86.36t of CO2 emission reduction). Five typical cities were selected to study the regional adaptability of the system and analyze environmental benefits. The results indicate that the CHPB system has the best environmental performance in Guangzhou, where the average CO2 emission reduction rate is 103.52%.http://www.sciencedirect.com/science/article/pii/S2666123322000356BiomassCogeneration systemEnvironmental benefitEquivalent CO2 emission factorCO2 emission reduction ratio |
| spellingShingle | Dong Zhang Rui Zhang Yu Zheng Bin Zhang Yuzhan Jiang Zhoujian An Jianhua Bai Carbon emission reduction analysis of CHP system driven by biogas based on emission factors Energy and Built Environment Biomass Cogeneration system Environmental benefit Equivalent CO2 emission factor CO2 emission reduction ratio |
| title | Carbon emission reduction analysis of CHP system driven by biogas based on emission factors |
| title_full | Carbon emission reduction analysis of CHP system driven by biogas based on emission factors |
| title_fullStr | Carbon emission reduction analysis of CHP system driven by biogas based on emission factors |
| title_full_unstemmed | Carbon emission reduction analysis of CHP system driven by biogas based on emission factors |
| title_short | Carbon emission reduction analysis of CHP system driven by biogas based on emission factors |
| title_sort | carbon emission reduction analysis of chp system driven by biogas based on emission factors |
| topic | Biomass Cogeneration system Environmental benefit Equivalent CO2 emission factor CO2 emission reduction ratio |
| url | http://www.sciencedirect.com/science/article/pii/S2666123322000356 |
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