Open-Field Agrivoltaic System Impacts on Photothermal Environment and Light Environment Simulation Analysis in Eastern China
In order to clarify the temporal and spatial changes in the internal photothermal environment in an open-field agrivoltaic system (OAVS), this paper took the OAVS in eastern China as the research object and divided the internal area into the southern area, middle area and northern area, according to...
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| Format: | Article |
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MDPI AG
2023-07-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/13/7/1820 |
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| author | Long Zhang Zhipeng Yang Xue Wu Wenju Wang Chen Yang Guijun Xu Cuinan Wu Encai Bao |
| author_facet | Long Zhang Zhipeng Yang Xue Wu Wenju Wang Chen Yang Guijun Xu Cuinan Wu Encai Bao |
| author_sort | Long Zhang |
| collection | DOAJ |
| description | In order to clarify the temporal and spatial changes in the internal photothermal environment in an open-field agrivoltaic system (OAVS), this paper took the OAVS in eastern China as the research object and divided the internal area into the southern area, middle area and northern area, according to the spatial structure. Further, a photothermal environment test was conducted in the above three areas in the summer and winter. The results showed that the summer average daylight rate (R<sub>m-avg</sub>) in the middle area was 66.6%, while the R<sub>m-avg</sub> in the other two areas was about 20%, with no significant difference. In the winter, the light environment in the southern area was slightly better, and the R<sub>m-avg</sub> in the above three areas was 26.4%, 24.7% and 19.7%, respectively. On the whole, the relationship between the thermal environmental factors and the solar radiation intensity was consistent. Further, a 3D model of an OAVS was established using Autodesk Ecotect Analysis 2011, and the internal light environment was simulated. Compared with the measured values, the relative error was less than 10%, which verified the reliability of the OAVS model. Then, the model was used to reveal the temporal and spatial changes in the light environment of the OAVS. The simulation results showed that the daylighting rate in the summer from the ground to the height of the fig canopy inside the system was 20.7% to 61.5%. In the winter, the daylighting rate from the ground to the height of the fig canopy inside the system was 17.7% to 36.4%. The effectiveness of the OAVS in reducing the level of solar radiation intensity depended on the time of day and the angle of the sun. At the spatial scale, due to the strong consumption of light by photovoltaic panels, there was a strong horizontal and vertical light environment gradient inside the system. In conclusion, the photothermal environment research of an OAVS based on Autodesk Ecotect Analysis 2011 can not only provide a basis for agricultural production and structural design such as span, height and the laying density of PV panels, but also expand its application to regions with different latitudes and longitudes and specific climates. |
| first_indexed | 2024-03-11T01:23:57Z |
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| id | doaj.art-d9e2079fec444add854a71bde45bdc09 |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-11T01:23:57Z |
| publishDate | 2023-07-01 |
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| spelling | doaj.art-d9e2079fec444add854a71bde45bdc092023-11-18T17:56:40ZengMDPI AGAgronomy2073-43952023-07-01137182010.3390/agronomy13071820Open-Field Agrivoltaic System Impacts on Photothermal Environment and Light Environment Simulation Analysis in Eastern ChinaLong Zhang0Zhipeng Yang1Xue Wu2Wenju Wang3Chen Yang4Guijun Xu5Cuinan Wu6Encai Bao7School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, ChinaSchool of Engineering, Anhui Agricultural University, Hefei 230036, ChinaInstitute of Agricultural Facilities and Equipment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, ChinaSchool of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, ChinaShenzhen Energy Nanjing Holding Co., Ltd., Nanjing 210019, ChinaShenzhen Energy Nanjing Holding Co., Ltd., Nanjing 210019, ChinaInstitute of Agricultural Facilities and Equipment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, ChinaSchool of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, ChinaIn order to clarify the temporal and spatial changes in the internal photothermal environment in an open-field agrivoltaic system (OAVS), this paper took the OAVS in eastern China as the research object and divided the internal area into the southern area, middle area and northern area, according to the spatial structure. Further, a photothermal environment test was conducted in the above three areas in the summer and winter. The results showed that the summer average daylight rate (R<sub>m-avg</sub>) in the middle area was 66.6%, while the R<sub>m-avg</sub> in the other two areas was about 20%, with no significant difference. In the winter, the light environment in the southern area was slightly better, and the R<sub>m-avg</sub> in the above three areas was 26.4%, 24.7% and 19.7%, respectively. On the whole, the relationship between the thermal environmental factors and the solar radiation intensity was consistent. Further, a 3D model of an OAVS was established using Autodesk Ecotect Analysis 2011, and the internal light environment was simulated. Compared with the measured values, the relative error was less than 10%, which verified the reliability of the OAVS model. Then, the model was used to reveal the temporal and spatial changes in the light environment of the OAVS. The simulation results showed that the daylighting rate in the summer from the ground to the height of the fig canopy inside the system was 20.7% to 61.5%. In the winter, the daylighting rate from the ground to the height of the fig canopy inside the system was 17.7% to 36.4%. The effectiveness of the OAVS in reducing the level of solar radiation intensity depended on the time of day and the angle of the sun. At the spatial scale, due to the strong consumption of light by photovoltaic panels, there was a strong horizontal and vertical light environment gradient inside the system. In conclusion, the photothermal environment research of an OAVS based on Autodesk Ecotect Analysis 2011 can not only provide a basis for agricultural production and structural design such as span, height and the laying density of PV panels, but also expand its application to regions with different latitudes and longitudes and specific climates.https://www.mdpi.com/2073-4395/13/7/1820agrivoltaicsagricultural buildingphotothermal environmentECOTECTsimulation |
| spellingShingle | Long Zhang Zhipeng Yang Xue Wu Wenju Wang Chen Yang Guijun Xu Cuinan Wu Encai Bao Open-Field Agrivoltaic System Impacts on Photothermal Environment and Light Environment Simulation Analysis in Eastern China Agronomy agrivoltaics agricultural building photothermal environment ECOTECT simulation |
| title | Open-Field Agrivoltaic System Impacts on Photothermal Environment and Light Environment Simulation Analysis in Eastern China |
| title_full | Open-Field Agrivoltaic System Impacts on Photothermal Environment and Light Environment Simulation Analysis in Eastern China |
| title_fullStr | Open-Field Agrivoltaic System Impacts on Photothermal Environment and Light Environment Simulation Analysis in Eastern China |
| title_full_unstemmed | Open-Field Agrivoltaic System Impacts on Photothermal Environment and Light Environment Simulation Analysis in Eastern China |
| title_short | Open-Field Agrivoltaic System Impacts on Photothermal Environment and Light Environment Simulation Analysis in Eastern China |
| title_sort | open field agrivoltaic system impacts on photothermal environment and light environment simulation analysis in eastern china |
| topic | agrivoltaics agricultural building photothermal environment ECOTECT simulation |
| url | https://www.mdpi.com/2073-4395/13/7/1820 |
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