Guorong Zhang, Ruiming Yu, Jian Xu, Longyan Dai
College of Electrical Engineering & New Energy China Three Gorges University , Yichang,China
In view of insufficient insulation of the typical plastic greenhouses in alpine regions, the study, with Numercial software, designed a plastic film with bubble structure and carried out five sets of comparative simulation experiments by changing the diameter of bubbles. The results of experiments show that in the visible light range (wavelength range from 300nm to 1100 nm), the transmittance increases with increasing wavelength, and it can be maximized when the diameter of the bubble is gradually changed. When the wavelength is less than 600 nm, the transmittance of the film is less than 60%. However, in the case of a film with a bubble structure, the transmittance of the film is significantly enhanced in the range of 300 to 600 nm, and it is also obviously improved at 600 to 1100 nm, especially at 700 to 1100 nm, it can still increase by about 10% and thereby exceeds 80%. The reflectivity is overall lower than that of the bubble-free structure, which further demonstrates that the structure proposed in this paper can further increase the utilization of solar energy from the aspects of increasing transmittance and reducing reflectivity.
film, Transmittance, Reflectivity
Guorong Zhang, Ruiming Yu, Jian Xu, Longyan Dai. Study on Transmittance of Plastic Shed Films with Bubble Structure. International Journal of New Developments in Engineering and Society (2019) Vol.3, Issue 2: 309-314. https://doi.org/10.25236/IJNDES.19240.
 Zhou Duan, Research on improving the cultivation technology of vegetable greenhouses and ensuring the quality and safety of agricultural products, Agricultural practical technology, 2019, 03
 Yufeng Wang, High quality and efficient production of anti-season plastic greenhouse vegetable, Friends of farmers getting rich, 2016, 06
 Yin Du, Yuxiang Hu, Yangjun Wang, Design of a new type of capsule structure agricultural greenhouse, Agricultural Science, 2017
 Jiayi Li, Jiuming Ma, Tianbiao Ni, Research progress on solar greenhouse insulation, 2013 Guangdong Material Development Forum-- Summary of papers on seminars on strategic emerging industry development and new materials technology innovation, 2013
 Jinwei Li, Baoming Li, Chunyan Wang, Effect of length of sunshine on the insulation of double-layer plastic film greenhouse, Journal of Yunnan Agricultural University,2005.02