As the demand for renewable energy sources grows, integrating solar-powered systems offers a promising solution. However, conventional photovoltaic (PV) panels typically convert only 15-20% of incident radiation into usable energy. Consequently, scientists worldwide are actively researching ways to improve panel performance and achieve higher energy efficiency by optimizing solar radiation flux density. This experimental study presents the design of a mobile photovoltaic-thermal device with an autonomous energy supply system. It details the results of experiments aimed at increasing electrical energy efficiency by testing a water-based cooling system for the module surface. The article also provides and analyzes time-dependent graphs of parameters such as short-circuit current, open-circuit voltage, solar radiation flux density, and ambient temperature, along with formulas for calculating the electrical and hot water energy obtained from the experiments. Additionally, this experimental research presents the results of trial tests conducted on a photovoltaic-thermal device with a power of 600 W and a useful surface area of 3.25 m2. This device is designed for small-scale electricity and hot water supply to both populations located far from centralized energy grids and social facilities engaged in mobile activities. The findings indicate that using additional reflectors to increase the incident
solar radiation flux density on the experimental setup boosted the amount of solar radiation reaching the surface by 1.8-2.0 times. Additionally, by employing water as the working fluid in the mobile photovoltaic-thermal device’s collector, the panel surface temperature was reduced by 1.2-1.5 times. Based on experimental findings, a mobile photo-thermal device with an autonomous energy supply typically achieves an electrical energy output efficiency of 14.3% and a thermal energy efficiency of 73%.
As the demand for renewable energy sources grows, integrating solar-powered systems offers a promising solution. However, conventional photovoltaic (PV) panels typically convert only 15-20% of incident radiation into usable energy. Consequently, scientists worldwide are actively researching ways to improve panel performance and achieve higher energy efficiency by optimizing solar radiation flux density. This experimental study presents the design of a mobile photovoltaic-thermal device with an autonomous energy supply system. It details the results of experiments aimed at increasing electrical energy efficiency by testing a water-based cooling system for the module surface. The article also provides and analyzes time-dependent graphs of parameters such as short-circuit current, open-circuit voltage, solar radiation flux density, and ambient temperature, along with formulas for calculating the electrical and hot water energy obtained from the experiments. Additionally, this experimental research presents the results of trial tests conducted on a photovoltaic-thermal device with a power of 600 W and a useful surface area of 3.25 m2. This device is designed for small-scale electricity and hot water supply to both populations located far from centralized energy grids and social facilities engaged in mobile activities. The findings indicate that using additional reflectors to increase the incident
solar radiation flux density on the experimental setup boosted the amount of solar radiation reaching the surface by 1.8-2.0 times. Additionally, by employing water as the working fluid in the mobile photovoltaic-thermal device’s collector, the panel surface temperature was reduced by 1.2-1.5 times. Based on experimental findings, a mobile photo-thermal device with an autonomous energy supply typically achieves an electrical energy output efficiency of 14.3% and a thermal energy efficiency of 73%.
Qayta tiklanuvchi energiya manbalariga bo‘lgan talab ortib borayotganligi sababli quyosh energiyasi asosida ishlovchi energetik qurilmalardan integratsiyalashgan holda foydalanish istiqbolli yechim hisoblanadi. Ammo bu odatiy fotoelektr batareyalar ularga tushayotgan nurlanishning atigi 15–20 % qismini foydali energiyaga aylantirib berganligi sababli hozirda dunyo olimlari tomonidan ushbu panellarning ish faoliyatini yaxshilash va quyosh nurlanish oqim zichligidan foydalanib, yuqori energiya
samaradorlikka erishish bo‘yicha ilmiy-tadqiqot ishlari amalga oshirilmoqda. Ushbu tajribaviy tadqiqot ishida avtonom energiya ta’minot tizimiga ega mobil fotoissiqlik qurilmaning dizayni, suv asosida modul sirtining sovitish tizimini sinovdan o‘tkazish orqali elektr energiya samaradorligini oshirish bo‘yicha
olib borilgan tajriba natijalari bayon qilingan. Shuningdek, maqolada tajriba natijasida olinadigan elektr va issiq suv energiyasini hisoblash formulalari, qisqa tutashuv toki va salt yurish kuchlanishi, quyosh nurlanish oqim zichligi va atrof-muhit harorati kabi parametrlarning vaqtga bog‘liq ravishda o‘zgarish
grafiklari keltirilib, tahlil qilingan. Bundan tashqari, ushbu tajribaviy-tadqiqot ishida markazlashgan energiya ta’minotidan uzoqda joylashgan aholi va ko‘chma faoliyat olib boradigan ijtimoiy soha obyektlarini kichik quvvatli elektr energiya va issiq suv ta’minotiga mo‘ljallangan 600 W quvvatga ega hamda foydali yuzasi 3,25 m2 bo‘lgan fotoissiqlik qurilmasida o‘tkazilgan tajriba-sinov ishlarining natijalari keltirilgan. Unga ko‘ra, tajriba qurilmasida quyosh nurlanish oqim zichligi miqdorini oshirish uchun qo‘shimcha reflektorlardan foydalanish orqali sirtga tushayotgan quyosh nurlanish oqimi miqdori 1,8–2,0 barobarga oshgan hamda mobil fotoissiqlik qurilmasining kollektorida ishchi jism sifatida suvdan foydalanish orqali panel yuzasi harorati 1,2–1,5 marotabagacha pasaytirilgan. Tajriba natijalariga ko‘ra, avtonom energiya ta’minotiga ega mobil fotoissiqlik qurilmasining elektr energiyasi berish samaradorligi o‘rtacha 14,3 %, issiqlik energiyasi samaradorligi esa o‘rtacha 73 %ni tashkil etadi.
В условиях растущего спроса на возобновляемые источники энергии интеграция систем, работающих на солнечной энергии, представляет собой перспективное решение. Однако традиционные фотоэлектрические панели, как правило, преобразуют лишь 15–20 % падающего излучения в полезную энергию. В связи с этим во всём мире ведутся активные научные исследования, направленные на повышение эффективности панелей путём оптимизации плотности потока солнечного излучения. Настоящее экспериментальное исследование посвящено разработке мобильного фотовольтаическо-теплового устройства с автономной системой энергоснабжения. В работе представлены результаты экспериментов по повышению электрической эффективности за счёт применения системы водяного охлаждения
поверхности модуля. Приведены и проанализированы графики изменения во времени параметров, таких как ток короткого замыкания, напряжение холостого хода, плотность потока солнечного излучения и температура окружающей среды. Также представлены формулы для расчёта произведённой электрической и тепловой энергии. Кроме того, в рамках исследования представлены результаты испытаний устройства мощностью 600 Вт с полезной поверхностью 3,25 м². Данное устройство предназначено для снабжения электроэнергией и горячей водой малых объектов, удалённых от централизованных электросетей, а также мобильных социальных объектов. Результаты показали, что применение дополнительных отражателей увеличивает
поступающий на поверхность панели поток солнечного излучения в 1,8–2,0 раза. Применение воды в качестве теплоносителя в коллекторе устройства позволило снизить температуру поверхности панели в 1,2–1,5 раза. По результатам экспериментов установлено, что мобильное фотовольтаическо-тепловое устройство с автономным энергоснабжением обеспечиваетэлектрическую эффективность 14,3 % и тепловую эффективность 73 %.
| № | Muallifning F.I.Sh. | Lavozimi | Tashkilot nomi |
|---|---|---|---|
| 1 | Rakhmatov A.R. | Doctoral Student at the Department of “Renewable Energy Sources” | Tashkent State Technical University named after I. Karimov |
| 2 | Shoguchkarov S.Q. | PhD in Technical Science, Associate Professor | Tashkent State Technical University named after I. Karimov |
| 3 | Halimov A.S. | PhD in Technical Science, Associate Professor, Senior Researcher at the Laboratory of Solar Thermal and Energetic Applications | Institute of Physics and technology of the Academy of Sciences of the Republic of Uzbekistan |
| № | Havola nomi |
|---|---|
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