Thermal Characteristics of a Solar Greenhouse with Heat Accumulators Based on Phase Change Materials

This paper presents the results of development of dynamic mathematical models of greenhouses with and without phase change materials. Greenhouses with a reduced size have been experimentally studied in natural conditions and computational and experimental studies have been validated. The root mean-square temperature error is 2.1°C and correlation coefficient R2 = 0.978. Based on the mathematical model, computational studies have been carried out to assess the annual characteristics of real-size greenhouses. The use of the phase-change accumulator in greenhouses makes it possible to save 60.77 kWh of energy per 1 m2 of usable area, which is 17.23% more economical than the variant using a conventional solar greenhouse without phase change materials.

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