Keywords
How to Cite
Abstract
Introduction. Reducing energy consumption in solar greenhouses and the efficient use of renewable energy sources are among the urgent problems of modern agriculture. Therefore, investigating the thermal regime of combined heating systems based on a heat pump and a solar water collector is considered one of the актуал issues.
Methods and materials. In the research, a solar greenhouse with a useful area of 50 m² was selected, and the heat load was calculated based on heat losses caused by construction, ventilation, infiltration, soil, and transpiration. To describe the heat exchange processes, energy balance equations were developed and a discrete mathematical model was created using the backward Euler method.
Results. According to the research results, on 11.11.2024 solar energy covered 49.2% of the total heat load, while on 11.02.2025 this indicator amounted to 15.2%. It was determined that the internal air temperature of the solar greenhouse varied from -6.0℃ to 30.7℃ depending on seasonal conditions. During the winter season, a significant increase in the demand for an additional heating system was observed.
Conclusion. The combined heating system makes it possible to increase the energy efficiency of the solar greenhouse and ensure a stable microclimate regime through the efficient use of solar energy and the low-potential heat of the soil.
References
[1]. Safarov A.B., Raxmatov O.I. Assessment of the technical and economic efficiency of autonomous solar greenhouses with even-span structures // Alternative Energy. – 2024. – Vol. 3, No. 14. – Pp. 9–16.
[2]. Davlonov Kh., Toshboev A., Sultanov S. The main heat-technical parameters of solar greenhouses in the southern climate of Uzbekistan // APEC-VI-2023. E3S Web of Conferences. – 2023. – Vol. 411. – Article 01038.
[3]. Вардияшвили А.А. Расчет энергосбережения при применении теплонасосной установки в гелиотеплицах // Альтернативная энергетика. – 2022. – № 4 (07). – С. 18–22.
[4]. Fatillayev S.Z., Ergashev Sh.H., Uzoqov Gʻ.N. Zamonaviy gelioissiqxonalarining statsionar rejimda issiqlik-energetik parametrlarini hisoblash natijalari // Innovatsion texnologiyalar. – 2023. – Vol. 52. – No. 4. – Pp. 22–27.
[5]. Abir Ahsan T.M., Shamim Ahamed M., Hassan A.A. Hybrid ground source heat pump for sustainable greenhouse climate control in hot and humid region // Sustainable Energy Technologies and Assessments. – 2025. – Vol. 83. – Article 104615. – DOI: 10.1016/j.seta.2025.104615.
[6]. Zhou B. et al. Smart energy supply for smart farms: A hybrid ground source heat pump in seasonal greenhouses for growing cherries // Smart Agricultural Technology. – 2026. – Vol. 13. – Article 101709. – DOI: 10.1016/j.atech.2025.101709.
This work is licensed under a Creative Commons Attribution 4.0 International License.
Copyright (c) 2026 Uzoqov, G'.N., Ibragimov, U.X., Xusenov, A.A. (Muallif)