Dust accumulation effects on efficiency of solar PV modules for off grid purpose: A case study of Kathmandu

Paudyal, Basant Raj; Shakya, Shree Raj

doi:10.1016/j.solener.2016.05.046

Cited by 183 publications

(55 citation statements)

References 20 publications

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“…Research by Paudyal and Shakya (2016) shows a negative correlation between humidity and dust accumulation. Humidity and dust deposition density are known to involve more than one variable (Qasem et al 2011).…”

Section: Cumulative Effect Of Meteorological Parameters On Dust Deposmentioning

confidence: 96%

“…A linear relation has been proposed to correlate the degradation in efficiency with the amount of sand dust accumulated on the module surface. Paudyal and Shakya (2016) on the similar research have derived another regression equation relating the impact of various meteorological parameters as well as dust deposition density for Kathmandu. This relation could help PV system designers to reliably predict the effect of dust accumulation on PV module efficiency under real environmental conditions.…”

Section: Introductionmentioning

confidence: 99%

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Soiling-induced transmittance losses in solar PV modules installed in Kathmandu Valley

et al. 2017

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Renewable energy sources are fast emerging as more reliable supplement of conventional energy sources. Among the various renewable sources, solar energy is most sought after in today's world. Solar PV modules when installed in outdoor environments suffer from various factors which are generally unaccounted in laboratory testing. Energy generation from solar collectors is primarily dependent on the amount of incident radiation on their surfaces. Soiling on modules is known to reduce the transmittance of incident rays to solar cell and cause significant output power degradation. Soiling is closely associated with the various factors such as module tilt angle, site-specific climate, outdoor exposure period, humidity, wind speed, dust characteristics and material properties. This experimental work is aimed to study the transmittance losses encountered by solar PV modules and the corresponding power degradation. The experimental results show an alarming reduction in transmittance as high as 69.06% over the dry study period experiencing no rain. The power of dusty solar module decreases by 29.76% compared to the module cleaned on daily basis. Dust deposition density on the PV module accounted to 9.6711 g/m 2 over the study period.

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Section: Cumulative Effect Of Meteorological Parameters On Dust Deposmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Soiling-induced transmittance losses in solar PV modules installed in Kathmandu Valley

et al. 2017

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“…(2) With as the rate of degradation of the short-circuit current (Isc) of the modules, Icci which represents the initial short-circuit current and Icc,stc as the one under standard conditions. According to Paudyal and Shakya (2016) and Al-Hasan and Ghoneim (2005), the degradation evolution is a function of the amount of dust deposition over time. This amount of deposits depends on the exposure site of the panels.…”

Section: Presentation Of the Experimental Protocolmentioning

confidence: 99%

Study of the performance of a system for dry cleaning dust deposited on the surface of solar photovoltaic panels

Aidara¹,

Ndiaye²,

Mbaye³

et al. 2018

Int. J. Phys. Sci.

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This study was carried out at the International Center for Training and Research in Solar Energy(CIFRES) and its main purpose was to study the performance of a solar module cleaning system. To handle this work, a measuring platform consisting of two polycrystalline (pc-Si) PV modules was designed. The modules were connected to a waterless cleaning system on the surface of the solar panels. The platform also contained a temperature sensor on the surface of the module, a pyranometer, shunt resistors (for current measurement), and an acquisition unit. This platform was exposed under real conditions and measurements of the parameters were taken in increments of ten seconds. Only one of the two modules was cleaned daily, and an evaluation of the degradation rate of the short-circuit current (I sc ) of the dust module with respect to the cleaned module was carried out. After one month of exposure, the analysis of the results showed a degradation rate of 17.13% of the short circuit current (I sc ) of the dirty module compared to the clean module. Compared to the initial conditions under the standard test conditions, a degradation of 10.16 and 24.09%, respectively for the clean module and the dirty module was obtained. This work also showed that a polynomial relation exists between the degradation rate and the dust deposition density with a coefficient of determination of 0.9933.

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“…Li [4] studied the depositional law of the particulate matters by adopting the method of simulation and experiment. Paudyal [5] was investigated the effect of dust on PV modules with respect to dust deposition density and meteorological variables for Kathmandu with the objective to calculate a regression equation describing efficiency loss. Tanesab [6] investigated the contribution of dust to the long-term performance degradation of various photovoltaic (PV) modules.…”

Section: Introductionmentioning

confidence: 99%

The settling volume and distribution of dust on PV module surface

Zhao¹,

Kang²,

Zhang³

et al. 2017

Proceedings of the 2017 2nd International Conference on Automation, Mechanical Control and Computational Engineering (AMCCE 201

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Abstract. Dust deposited on photovoltaic (PV) module surface is one of the most important factors that influence the power of PV modules. In this paper, the settling volume and distribution regularities of dust in the gas-solid two phase flow under different conditions of PV component installation angle and wind speed were respectively investigated by simulation. And compare the setting volume of simulation with the experiment results. The results indicate that low wind speed may make dust to deposit intensively on upper right of PV component surface with the constant installation angle. The bulk density of dust increases with increasing wind speed and stratification is more obvious. The faster wind speed is, the fewer the settling volume of dust it is. However, the deposition of dust on the surface show layered characteristics with the angle increased when the wind speed is faster. And the dust density of PV modules surface is reducing from edge to center resulting in homogeneous deposition of dust on PV component surface. Furthermore, the bigger installation angle is, the settling volume of dust more it is. And an angle of 45°is the max width of maximum bulk density area when inlet wind speed is constant.

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Dust accumulation effects on efficiency of solar PV modules for off grid purpose: A case study of Kathmandu

Cited by 183 publications

References 20 publications

Soiling-induced transmittance losses in solar PV modules installed in Kathmandu Valley

Soiling-induced transmittance losses in solar PV modules installed in Kathmandu Valley

Study of the performance of a system for dry cleaning dust deposited on the surface of solar photovoltaic panels

The settling volume and distribution of dust on PV module surface

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