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This paper proposes heat transfer processes for greenhouse heating using the thermal potential of thermal power plant (TPP) sludge during the heating season in the Kyrgyz Republic. The influence of sludge temperature, soil temperature, and greenhouse indoor air temperature on the formation of a stable thermal regime of protected cultivation systems was investigated. The results demonstrate that a sludge temperature within the range of 60–70 °C provides sufficient heat output to meet the thermal demand of a medium-sized greenhouse facility. The study examined the distribution of heat flows through the soil, greenhouse walls, roof structures, and surrounding ground, taking into account convective and radiative heat transfer. The main components of the greenhouse heat balance were identified, including heat losses through enclosing structures, air infiltration, and the heating of supply air. The effects of solar radiation and the heat-accumulating capacity of the soil on maintaining the required indoor greenhouse temperature were also determined. A calculation model of the heating system in the form of “sludge thermal power – soil temperature – greenhouse air temperature” was developed, enabling an analytical description of the heat exchange process. Relationships for calculating the heat output of TPP sludge, seasonal heat consumption, and the required greenhouse heating area were analyzed.
References
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Copyright (c) 2026 Жапакова, , Темирбаева, Н.Ю., Осмонов, Ы.Ж. (Автор)