MATHEMATICAL MODELING OF HEAT AND HUMIDITY PROCESSES IN A GREENHOUSE HEATED BY A VACUUM TUBE SOLAR COLLECTOR

Abstract

In southern regions, the demand for additional thermal energy in greenhouses increases during the winter season. The use of solar-based heliosystems is considered a promising method for energy-efficient greenhouse heating. This scientific article presents mathematical modeling of heat and moisture processes occurring inside a greenhouse, enhancement of energy efficiency, and the effectiveness of using a vacuum tube solar collector. The calculation results showed that the internal temperature of the greenhouse can be maintained within 21–27 °C and the relative humidity within 60–75%. Experimental investigations confirmed that the system can achieve an efficiency of up to 72%.