The article presents the results of studies of the optical characteristics of a
composite polyethylene film (CPP) (South Korea), manufactured using the Heungil technology for
solar greenhouses with a single- and two-layer translucent coating. It has been established that in
the visible region of the spectrum the transmittance (T) of a two-layer translucent coating is lower
than that of a single-layer coating. In the infrared spectrum, the graphs of the transmittance of
one- and two-layer coatings intersect. The composition of the CPP was determined by X-ray
diffraction analysis using a Rigaku Mini Flex 600 diffractometer.
Based on the results obtained, the design of an energy-saving trench-type double-slope solar
greenhouse was modernized. Experiments were carried out to determine the thermal parameters
of a trench-type solar greenhouse without the use of traditional fuels. The temperature regimes,
relative humidity of solar greenhouses with one- and two-layer CPPs were studied under warm
(December 7-8, 2022) and cold (January 12-13, 2023) weather conditions. The experiments showed
that on frosty days (January 12-13, 2023) the night temperature of the air in a trench-type solar
greenhouse with single-layer and two-layer film coatings, respectively, was -2 0С and 2.10С.
The article presents the results of studies of the optical characteristics of a
composite polyethylene film (CPP) (South Korea), manufactured using the Heungil technology for
solar greenhouses with a single- and two-layer translucent coating. It has been established that in
the visible region of the spectrum the transmittance (T) of a two-layer translucent coating is lower
than that of a single-layer coating. In the infrared spectrum, the graphs of the transmittance of
one- and two-layer coatings intersect. The composition of the CPP was determined by X-ray
diffraction analysis using a Rigaku Mini Flex 600 diffractometer.
Based on the results obtained, the design of an energy-saving trench-type double-slope solar
greenhouse was modernized. Experiments were carried out to determine the thermal parameters
of a trench-type solar greenhouse without the use of traditional fuels. The temperature regimes,
relative humidity of solar greenhouses with one- and two-layer CPPs were studied under warm
(December 7-8, 2022) and cold (January 12-13, 2023) weather conditions. The experiments showed
that on frosty days (January 12-13, 2023) the night temperature of the air in a trench-type solar
greenhouse with single-layer and two-layer film coatings, respectively, was -2 0С and 2.10С.
№ | Muallifning F.I.Sh. | Lavozimi | Tashkilot nomi |
---|---|---|---|
1 | Botirov B.M. | researcher | TSTU |
2 | Yuldoshev I.A. | teacher | TSTU |
3 | Kurbanov Y.M. | teacher | TSTU |
4 | Hamdamov U.B. | teacher | TSTU |
№ | Havola nomi |
---|---|
1 | G.N. Uzokov., Kh.A. Davlonov. Energy-efficient heating systems of helio greenhouses. Monograph. “Voris Press”, 2019. 170. |
2 | L.R. Mazaev. Method for calculating and designing a solar greenhouse for the Siberian region. Abstract of the dissertation for the degree of candidate of technical sciences. “Buryat State Agricultural Academy. V.R. Filippov”. Barnaul, 2021. |
3 | M.V. Pavlov., D.F. Karpov. Study of the influence of various factors on the thermal power of the radiant-convective heating system of a winter greenhouse. “Bulletin of the Tomsk State University of architecture and civil engineering”, 2019. 149. |
4 | A.M. Penjiyev. Opportunities for saving thermal energy in greenhouses of agricultural enterprises. “Scientific result. Economic research”, 2018. 66. |
5 | Kh.A. Davlonov. Development of an energy-efficient heating system for solar greenhouses based on pyrolysis plants. “Abstract of the thesis of a Doctor of Philosophy (PhD) in technical sciences”, Tashkent, 2019. |
6 | Decree of the President of Uzbekistan No. PP-57 dated on February 16, 2023 “On measures to accelerate the introduction of renewable energy sources and energy-saving technologies in 2023”, 2023. |
7 | T.T. Riskiev., M.N. Tursunov., Kh. Sabirov., I.A. Yuldoshev., B.M. Turdiev. Autonomous photovoltaic power supply system for greenhouses of rural residents. “The problem of energy and resource saving”, 2013. 128. |
8 | B.M. Botirov., A.S. Khalimov., I.A. Yuldoshev., D.M. Pulatova., Y.M. Kurbanov. Experimental verification of a mathematical model for the temperature mode of a Solar-fuel trench-Type greenhouse. “Applied solar energy”, 2021. 670. |
9 | V.I. Pyndak., A.E. Novikov., O.V. Amcheslavsky. Greenhouses for small farms. “News Energy”, 2016. 234. |
10 | B.M. Botirov., A.S. Khalimov. “Program for calculating the temperature regime of a trenchtype greenhouse”, DGU 10743, 2021. |
11 | A. Abdullaev., Sh.K. Niyazov. Forecasting the optimal timing of the use of a traditional heating system in greenhouses with a combined solar-fuel heating system. “Heliotechnique”, 2003. 66. |
12 | G. Vox., E. Schettini., A.L. Cervone., A. Anifantis. Solar thermal collectors for greenhouse heating. “Acta hort”, 2008. 787. |
13 | A.M. Penjiev. Mathematical modeling of the microclimate in a solar greenhouse of a trench type. International scientific journal. “Alternative energy and ecology”, 2010. 59. |
14 | L.E. Rybakova., A.M. Penjiev. “Recommendations for growing coffee trees in a solar greenhouse”, Ashgabat, 1990. |
15 | I.A. Yuldoshev., B.M. Botirov., S.Q. Shoguchkarov., M. Botirov., J. Abduganiyev. Method of long long- term hing quality storage of lemon crop which are grown in the autonoumous greenhouse. “Technical science аnd innovation”, 2022. 60. |