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ASSESSMENT OF THE POTENTIAL ICING RISK ON THE FRONT SURFACE OF PHOTOVOLTAIC MODULES IN UZBEKISTAN BASED ON THE DURATION OF DAYTIME SUBZERO TEMPERATURES

Field of Science:Energy (miscellaneous)Energy Engineering and Power TechnologyRenewable Energy, Sustainability and the Environment
National field of science (HAC):02.00.08 — Chemistry and technology of oil and gas04.00.12 — Construction and operation of oil and gas pipelines, bases and storage facilities04.00.13 — Development and operation of oil and gas fields05.05.04 — Industrial heat power engineering05.05.01 — Power systems and complexes05.05.02 — Electrical engineering. Electric power stations and systems. Electrotechnical complexes and devices05.05.03 — Lighting engineering. Special lighting technologies05.05.09 — Nuclear power installations and technologies05.05.10 — Nuclear reactor engineering, machines, units and materials technology of the nuclear industry05.05.05 — Theoretical foundations of thermal engineering05.05.06 — Power installations based on renewable energy sources05.05.07 — Electrical technologies and electrical equipment in agriculture
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Abstract. Introduction. The paper proposes an approach to assessing the potential icing risk on the front surface of photovoltaic modules across Uzbekistan. The assessment is based on the duration of daytime subzero temperatures, the number of such days, and a normalized risk index. The results show that the highest potential risk is characteristic of mountainous, foothill, and some northern regions of the country. Methods and materials. The study uses cartographic materials for Uzbekistan showing the total duration of daytime hours with air temperatures of 0 °C and below, as well as the number of days with such conditions. The indicators H0,day, N0,day, and the index Iice were introduced. Additional factors affecting the actual surface condition of the module, including surface temperature, humidity, solid precipitation, wind speed, irradiance in the module plane, and tilt angle, were also considered. Results. The analysis revealed a pronounced spatial heterogeneity of the potential icing risk across Uzbekistan. The highest values are typical of mountainous and foothill areas, as well as parts of the northern regions, whereas the risk is lower in central and southern plains and is more often associated with short-term morning frost. Based on the Iice index, a preliminary territorial classification of icing risk levels was proposed. Conclusion. The duration of daytime subzero temperatures can be used as a screening climatic and thermal indicator of the potential icing risk on the front surface of photovoltaic modules. The proposed approach is useful for site selection, justification of module tilt angle, winter monitoring, and the development of local operating regulations. However, quantitative assessment of actual icing and energy losses requires further validation us

AUTHORS

Science ID: DTN-0525-0156

Science ID: MFR-0525-0121

Tags

# температура# эксплуатация# покров# модуль# поверхность# индекс# риска# фотоэлектрический# фронтальная# обледенение# иней# снежный# дневная# отрицательная# узбекистан# зимняя

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