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NUMERICAL MODELING OF HEAT TRANSFER PROCESSES IN A SOLAR PHOTOVOLTAIC MODULE WITH WATER COOLING OF THE EXTERNAL SURFACE

Field of Science:Energy (miscellaneous)Renewable 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 electrical efficiency of solar photovoltaic (PV) modules is strongly dependent on the surface temperature of the module, with increasing temperature leading to a reduction in power output. Therefore, enhancing heat transfer through water cooling of PV modules represents a relevant and timely research problem. Methods and Materials. A mathematical model describing heat transfer processes in a solar PV module with water cooling of the external surface was developed, and a numerical investigation was carried out based on energy balance equations. Results. The results show that increasing the cooling water flow rate from 0.01 to 0.05 kg/s reduces the cooling water temperature by 5-8℃, while the module temperature reaches a steady state within 40-60 s. Furthermore, when the water flow rate is increased from 0.005 to 0.02 kg/s, the electrical efficiency of the PV module increases by 2.0-2.5%. Conclusion. Water cooling effectively reduces the PV module temperature and enhances the efficiency of electrical power generation.

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Science ID: DQD-0626-0005

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# samaradorlik# energiya# suv# issiqlik# bilan# fotoelektrik# moduli# sovitish# almashinuvi# balansi# elektr

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References

Annotatsiya. Kirish. Quyosh fotoelektrik modullarining elektr samaradorligi modul yuzasi haroratiga bog‘liq bo‘lib, harorat ortishi quvvat ishlab chiqarishni kamaytiradi. Shu sababli FEMlarni suv bilan sovitish orqali issiqlik almashinuvini kuchaytirish dolzarb masala hisoblanadi. Usul va materiallar. Tashqi yuzasi suv bilan sovitiluvchi quyosh FEM uchun issiqlik almashinuv jarayonlarini tavsiflovchi matematik model ishlab chiqildi va energiya balansi tenglamalari asosida sonli tadqiqot o‘tkazildi. Natijalar. Suv sarfi 0,01-0,05 kg/s gacha oshirilganda sovituvchi suv harorati 5-8℃ ga kamaydi va modul harorati 40-60 soniyada barqarorlashdi. Suv sarfi 0,005 kg/s dan 0,02 kg/s gacha oshirilganda FEM elektr samaradorligi 2,0-2,5% ga ortdi. Xulosa. Suv bilan sovitish FEM haroratini pasaytirib, elektr energiya ishlab chiqarish samaradorligini oshirish imkonini beradi.

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