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IoT Based Framework: Mathematical Modelling and Analysis of Dust Impact on Solar Panels
摘要： The solar photovoltaic performance is governed by manifold parameters viz. temperature, irradiance, dust on solar module, photoactive material, panel orientation. Among these dust is a critical impediment, as its accumulation on panel surface degrades its productivity; while frequent cleaning sessions affect module's life and result into PV destruction. Accordingly, the need to know dust thickness responsible for deteriorating panel's capability and adequate cleaning time of solar panels to produce optimum yields is requisite. This paper aims to discern a right cleaning time, owing to a particular dust thickness so as to conserve the panel efficiency using internet of things (IoT). The mathematical correlations of PV efficiency and current with thickness of accumulated dust are derived using linear regression. Further, these equations are associated with an IoT-based platform which remotely monitors and records PV output current; thereafter dust thickness corresponding to a significant current reduction is estimated. For this, experimental data of 46 inverters with total 114,819.30 kWh productions in a month with an average of 4416.13 kWh/day is accessed and the results pertaining to mathematical analysis exhibit a decline in current by 1 A with 5.51 × 10^{-3} mm thickness of dust.
关键词： Transmittance,Photovoltaic module,Output efficiency,Dust deposition
更新于2025-09-23 15:23:52
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The influence of dust deposition on the temperature of soiling photovoltaic glass under lighting and windy conditions
摘要： Module temperature has significant influence on the energy harvest and energy conversion efficiency of solar cells, which varies greatly with dust deposition and the wind-blowing. In this paper, several sets of experiments were carried out to test the temperature of soiling photovoltaic glass plate under lighting and windy conditions. The results indicate that the temperature of the upper and lower surface is much higher than that of the clean glass plate, and the dust deposition can exert great impact on the temperature of lower surface compared with that on the upper surface. At the same time, under the lighting and windy conditions, the maximum temperature of the photovoltaic glass plate decreases exponentially with increasing wind speed. The final temperature of clean glass plate tends to be consistent with the ambient one, while the temperature of dusty glass plate is much higher than air temperature. Through simulating the external electromagnetic field of spherical particle irradiated by the plane wave, we firstly found that the deposition particles can result in light convergence in its wavefront direction, and the light intensity can also be enhanced, significantly heating the glass plate. All our preliminary results throw light on the effect of dust deposition on the photovoltaic panel temperature in the desert, which can be helpful to establish a more reliable physical model of photovoltaic power generation efficiency involving environmental factors.
关键词： Wind speed,Dust deposition,Photovoltaic glass,Temperature
更新于2025-09-23 15:19:57
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Effect of dust concentration, wind speed, and relative humidity on the performance of photovoltaic panels in Tehran
摘要： Impact of dust concentration and weather conditions – wind speed and relative humidity – on power generation of photovoltaic (PV) panels investigated experimentally in Tehran, Iran, for the period of April 10–September 22, 2018. Two Photovoltaic panels together with data-logging equipment were applied in this experiment. One panel was cleaned every day, while the other was remained unclean after 45 days. A performance ratio called “cleanness index” (CI) which is a temperature-corrected performance ratio of a soiled PV panel to that of a clean one was also used to indicate the dust deposition effect on PV panel performance. The uncertainty range of experimental results was between 5.27% and 5.55%. The results show that cleanness index had positive correlation with wind speed and negative correlations with relative humidity and dust concentration. Thus, in comparison to the clean PV panel, the output-power of the soiled panel reduced, approximately 8–12% per month. Furthermore, in order to numerically predict daily change of cleanness index (ΔCIPre), a linear regression model was developed and the outcome revealed that dust concentration had the most impact, with 21.56%.
关键词： cleanness index,dust deposition,weather condition,Photovoltaic panel,performance loss
更新于2025-09-19 17:13:59
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Effect of Industrial Dust Deposition on Photovoltaic Module Performance: Experimental Measurements in the Tropical Region
摘要： Dust particle accumulation affects outdoor photovoltaic module transmittance of solar cell glazing and thus leads to significant degradation of conversion efficiency owing to lower irradiance reaching the surface. In this study, the sensitivity of the polycrystalline silicon photovoltaic module towards industrial dust deposition was experimentally investigated under the tropical climatic condition of Arusha, Tanzania. Dust involved in the study came from fertilizer, gypsum, aggregate crusher, and coal mine industries. The experimental measurements were outdoor conducted under 720 W/m2, 800 W/m2, and 900 W/m2 solar irradiances. Results indicated that dust accumulation on the polycrystalline silicon photovoltaic module negatively affected output power as well as short-circuit current, however having no significant impact on open-circuit voltage. Maximum module efficiency loss was observed to be 64%, 42%, 30%, and 29% for coal, aggregate, gypsum, and organic fertilizer dust, respectively; hence, coal dust was the most effecting dust among the four. It was also demonstrated that PV module performance deteriorated with temperature rise owing to heat dissipation caused by dust accumulation.
关键词： dust deposition,photovoltaic module,industrial dust,tropical region,performance degradation
更新于2025-09-16 10:30:52
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Effect of dust deposition on performance characteristics of a refrigerant based photovoltaic/thermal system
摘要： A photovoltaic/thermal (PV/T) system is an integration of a solar thermal system and photovoltaic module, which produces both heat and electricity simultaneously with better performance characteristics. Depending on the heat transfer fluid employed, they are mainly classified as air, water or refrigerant based systems. Advances in the field of PV/T systems ascertained that refrigerant based PV/T systems have better reliability and superior performance compared to air or water based PV/T systems. To date, the effect of dust deposition on the performance of a refrigerant-based photovoltaic/thermal system is hardly reported. The objective of the present study is to analyze the effect of dust deposition on the performance characteristics of a refrigerant photovoltaic/thermal system. Firstly the dust deposition under the climatic conditions of Surat City (21.17° N, 72.83° E), India was characterized through an experimental procedure following which a validated numerical model was used to study its effect on performance. It was observed that the progressive dust accumulation for a period of eight weeks reduced the spectral transmissivity of the glass from 91% to 46.09% due to which the electrical efficiency and coefficient of performance (COP) of the system reduced relatively by 44.14% and 8.53% respectively.
关键词： Dust deposition,Photovoltaic/thermal system,Heat pump
更新于2025-09-16 10:30:52
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Effects of Coal and Fly Ash Dust Deposition of Photovoltaic Panel Performance: A Photovoltaic System at Coal-Fired Power Plant Case Study
摘要： Malaysia is aiming to increase its renewable energy generation capacity from 2% to 20% by 2030. Solar photovoltaic (PV) system will play a huge role in getting this target achieve as it is considered a maturing technology in Malaysia and the nation is blessed with ample amount of solar irradiation throughout the year. However, in Malaysia, this technology faces various implementation challenges such as the PV performance degradation due to dust deposition on the PV panels. Generally, coal-fired power plants have an abundant area of coal ash pond that is suitable for installing floating PV systems. However, this area is prone to dust deposition resulting from pulverized coal particles and fly ashes. This paper aims to evaluate the effects of dust deposition on PV panels’ performance, specifically for PV systems that will be installed near coal-fired power plants in Malaysia. In this study, PV panels were exposed to four different types of dust deposit conditions, which are coal particles, fly ashes, normal environmental dust as well as control PV panel that was clean on daily basis. The tests were carried out outdoor under natural sunlight. Performance of the PV panels were measured based on the power generated by the panels. The average power drop based on the types of dust deposition on PV panels are; natural dust (2.72%), fly ash (13.16 %) and coal ash (15.82 %).
关键词： dust deposition,Photovoltaic panel,coal ash,solar energy,PV performance
更新于2025-09-16 10:30:52
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Effects of Particle concentration, deposition and accumulation on Photovoltaic device surface
摘要： The efficiency of solar photovoltaic system is affected by many factors, among which the influence of dust deposition on photovoltaic panels is a prominent problem. In the desert which has sufficient radiation, the problem of dust deposition is quite serious. In some developed cities, photovoltaic devices are affected by dust or aerosol deposition. This short paper, thus, briefly summarizes studies of dust deposition on PV panels of urban and desert areas in recent years, and analyses the influence of dust deposition on the panel, particle characteristics and dust deposition process based on these studies. In general, there are three fields that suggests more research: (1) study on characteristics of sand or dust combined with local environmental characteristics; (2) modeling and simulation of particle dynamics around photovoltaic array; (3) comprehensive laboratory designed experiments to understand the specific influencing factors.
关键词： Airborne concentration,Efficiecy reduction,Photovoltaics (PV),Dust deposition,Accumulation
更新于2025-09-12 10:27:22