Evaluation of the effectiveness of a helio-greenhouse with soil heating

• Published in: IOP conference series. Earth and environmental science Vol. 604; no. 1; pp. 12021 - 12026
• Main Authors: Belov, V V, Belov, E L, Sharonova, T V
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.11.2020
• Subjects: Accumulation; Agricultural production; Air temperature; Ambient temperature; Crop production; Farms; Greenhouses; Heating; Microclimate; Polycarbonate; Production methods; Relative humidity; Small farms; Soils; Solar energy; Warm air; Weather
• ISSN: 1755-1307; 1755-1315
• DOI: 10.1088/1755-1315/604/1/012021

In most cases, various industrial greenhouses are used to grow vegetables in large volumes. Smallholder farms and horticultural individual plots have recently begun to use small polycarbonate greenhouses. However, it is not always possible to fully use the capabilities of such greenhouses due to the influence of weather, especially in early spring and late autumn. According to the authors, one of the methods to increase crop production in greenhouses is the collection and accumulation of solar energy, its further use for heating the lower layers of air in the greenhouse, and heating the soil. To solve this problem, an experimental helio-greenhouse with a height of 4.2 m has been made. The design of the helio-greenhouse provides for a system of underground pipes 110 mm in diameter buried to a depth of about 1 m into which air heated by the sun is fed from the upper part by an axial fan. The article presents the results of experimental studies of the microclimate (temperature and relative humidity) in an experimental Helio-greenhouse in comparison with a standard greenhouse and the environment. The results prove the effectiveness of the experimental Helio-greenhouse, namely, the temperature in it is 3 - 35 °C higher than the ambient temperature; there is a possibility of accumulation of warm air and its further use for heating the soil; it is possible to sow (plant) plants earlier than in a standard greenhouse.