scholarly journals Simulation study of the photovoltaic panel under different operation conditions

ACTA IMEKO ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 62
Author(s):  
Mohammed Alktranee ◽  
Péter Bencs
Keyword(s):  
Solar Radiation ◽  
Temperature Increase ◽  
3D Model ◽  
Ansys Software ◽  
Photovoltaic Panel ◽  
Average Temperature ◽  
Operation Conditions ◽  
Pv Panel ◽  
Simulation Results ◽  
Effects Of Temperature

<p>An increase in the temperature of the photovoltaic (PV) cells is a significant issue in most PV panels application. About 15–20% of solar radiation is converted to electricity by PV panels, and the rest converts to heat that affects their efficiency. This paper studies the effects of temperature distribution on the PV panel at different solar radiation values, temperatures under different operation conditions in January and July. A 3D model of the PV panel was simulated with ANSYS software, depending on the various values of temperatures and solar radiation values obtained using mathematic equations. The simulation results indicate that PV panel temperature lowered with solar radiation values lower in January, and the temperature was homogeneous on the PV panel surface. An increase in the solar radiation value and temperature in July led causes heating of the PV panel with observed a convergence of the maximum and average temperature of the panel. Thus, the PV panel temperature increase is directly proportional to the solar radiation increase that causes lower performance. Cooling the PV panel by passive or active cooling represents the optimum option to enhance their performance and avoid increasing the PV cells' temperature at temperature increase.</p>

Modeling of Photovoltaic Panel and Examining Effects of Temperature in Matlab/Simulink

1970 ◽  
Vol 109 (3) ◽  
pp. 35-40 ◽  
Author(s):  
S. Rustemli ◽  
F. Dincer
Keyword(s):  
Solar Radiation ◽  
Modeling And Simulation ◽  
Output Power ◽  
Special Function ◽  
Matlab Simulink ◽  
Photovoltaic Panel ◽  
Cell Technology ◽  
Simulation Results ◽  
Effects Of Temperature ◽  
Specific Modeling

This study proposes general and specific modeling and simulation for Lorentz LA30-12S photovoltaic panel. This panel has monocrystalline cell technology. The panel power parameters are examined under observing different panel temperatures. It is created a special function for this system by Matlab/Simulink programmer. Also, the different solar radiation values are taken into account. The model for the proposed range of irradiance and temperature as model inputs, with the corresponding values of voltages, currents, and power as outputs is presented. Simulation results are compared by doing power calculations. The simulation results show that a photovoltaic panel output power reduces as module temperature increases. This situation is showed with Matlab/Simulink graphics. Ill. 13, bibl. 24, tabl. 1 (in English; abstracts in English and Lithuanian).http://dx.doi.org/10.5755/j01.eee.109.3.166

scholarly journals Analysis Air Cooling Mechanism for Photovoltaic Panel by Solar Simulator

2015 ◽  
Vol 5 (4) ◽  
pp. 636
Author(s):  
Mohd. Irwan Yusoff ◽  
Leow Wai Zhe ◽  
Muhammad Irwanto Misrun ◽  
Mohd Fareq Abd. Malek ◽  
Amelia Abdul Razak ◽  
...  
Keyword(s):  
Solar Radiation ◽  
Operating Temperature ◽  
Steel Structure ◽  
Test Area ◽  
Air Cooling ◽  
Solar Simulator ◽  
Photovoltaic Panel ◽  
Pv Panel ◽  
Exceptional Circumstance ◽  
Cooling Mechanism

Measurement the outdoor efficiency of photovoltaic (PV) panels is essential, but it is not likely an exceptional circumstance at any given moment is always repeating itself. A solar simulator was designed and fabricated for the purpose of analyzing the performance of PV panel with and without an air cooling mechanism in indoor test. Twenty units of 500 W halogen lamps with build-in reflector support by the steel structure holder act as a natural sunlight. The uniformity of the solar radiation was measured in the test area. Two units of PV panel with same characteristics were experimental in three sets of uniformity of solar radiation, which are 620, 821 and 1016 W/m². The operating temperature of PV panel with an air cooling mechanism can be decreased 2-3 ˚C compared to PV panel reference. The PV panel with an air cooling mechanism can be increased in 3-7 % of maximum power output based on solar radiation. An overall method and procedure of the measurement by the solar simulator are discussed and proposed.

scholarly journals Experiment study of water based photovoltaic-thermal (PV/T) collector

2019 ◽  
Vol 9 (1) ◽  
pp. 118
Author(s):  
Nur Farhana Mohd Razali ◽  
Ahmad Fudholi ◽  
Mohd Hafidz Ruslan ◽  
Kamaruzzaman Sopian
Keyword(s):  
Solar Radiation ◽  
Water Flow ◽  
Electrical Energy ◽  
Energy Output ◽  
Photovoltaic Panel ◽  
Pv Panel ◽  
Increase With Increase ◽  
Output Increase ◽  
Energy And Exergy ◽  
Water Based

<span lang="EN-US">Solar radiation can be converted to the electrical energy and thermal energy by photovoltaic panel and solar collector. In this experiment, PV/T collector was designed, fabricated and tested its performance. The experiment conducted on PV/T collector with water flow at mass flow rate 0.012 kg/s to 0.0255 kg/s. The water flow with the stainless stell absorber help the PV/T collector in increasing the convection of thermal heat transfer. The power output increase with increase of radiation. The efficiency of PVT varies with different intensity of radiation which stated in this experiment for 750 W/m<sup>2</sup> and 900 W/m<sup>2</sup>. The analysis of energy and exergy are excuted and results show energy output for water based PV/T collector are 346 W for solar radiation 700 W/m<sup>2</sup> and 457 W for solar radiation 900 W/m<sup>2</sup>.  Meanwhile the total exergy output compared to the PV panel without stainless stell absorber, which the exergy increased by 22.48% for 700 W/m<sup>2</sup> and 20.87% for 900 W/m<sup>2</sup>.</span>

Theoretical Investigation of Radiative Transport and Heat Transfer of Nanofluids in a Direct Solar Absorption Collector

2010 ◽  
Author(s):  
Qunzhi Zhu ◽  
Yongguang Li ◽  
Lijuan Mu ◽  
Yun Cui
Keyword(s):  
Heat Transfer ◽  
Solar Radiation ◽  
Theoretical Investigation ◽  
Temperature Increase ◽  
Solar Collector ◽  
Solar Spectrum ◽  
Radiative Properties ◽  
Solar Absorption ◽  
Average Temperature ◽  
Calculated Average

Conversion of solar energy into heat is a common way to explore the clean and renewable energy source. Generally, a spectrally selective coating should be deposited to the solar-absorbing surface of the solar collector in order to reduce thermal loss emitted away from the surface in the form of thermal radiation. Nanofluids can be filled into a flat plate solar collector to absorb the solar radiation directly. The absorbance of the nanofluid in the solar spectrum may be tuned by various nanoparticles of different materials, sizes and mass fractions. In this paper, a theoretical investigation is carried out to model absorption, scattering and extinction of solar radiation within the nanofluid and to model the heat transfer within the liquid film in the direct solar absorption collector. The predicted extinction coefficient is much lower than the measured value in visible spectrum for the SiO2-water nanofluid. The calculated average temperature increase in the outlet of the collector using the measured radiative properties agrees with the measured value while that applying the predicted radiative properties is significantly lower. Nevertheless, the agreement in the predicted and the measured extinction coefficients of the TiO2-water nanofluid is reasonably good within the solar spectrum. The calculated average temperature increase is close to the measurement value. This work is helpful to understand radiative transport and heat transfer of direct solar absorption collectors using nanofluids.

scholarly journals Effect of Temperature on Solar Photovoltaic Panel Efficiency

2019 ◽  
Vol 8 (6) ◽  
pp. 2593-2595
Keyword(s):  
Solar Radiation ◽  
Solar Energy ◽  
Heat Energy ◽  
Effect Of Temperature ◽  
Solar Photovoltaic ◽  
Environmental Condition ◽  
Solar Pv ◽  
Photovoltaic Panel ◽  
Pv Panel ◽  
Photovoltaic Solar Cells

Solar energy is the important energy source for future. Lot of devices are used for capture the energy from solar radiation and convert into useful form of energy. Solar PV (Photovoltaic) Panels are the promising devices convert the solar radiation into electrical form of energy. The partial portion of solar energy may be converted into electricity remaining in the form heat energy. Solar PV panel performance varies with temperature increase. The PV panel temperature has effect on power and voltage. Due to increase of temperature, the photovoltaic solar cells efficiency may be decreased. The life of the panel also will be decreased. In this paper how the heat energy received from solar radiation in the form of temperature affect the solar panel efficiency was analysed by experiment conducted with solar PV panel of 50W in the real outdoor environmental condition.

Numerical Performances Study of Curved Photovoltaic Panel Integrated with Phase Change Material

2020 ◽  
Vol 22 (4) ◽  
pp. 1439-1452
Author(s):  
Mohamed L. Benlekkam ◽  
Driss Nehari ◽  
Habib Y. Madani
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Numerical Study ◽  
Numerical Data ◽  
Navier Stokes ◽  
Photovoltaic Panel ◽  
Pv Panel ◽  
Energy Equations ◽  
Solid Liquid ◽  
Change Material

AbstractThe temperature rise of photovoltaic’s cells deteriorates its conversion efficiency. The use of a phase change material (PCM) layer linked to a curved photovoltaic PV panel so-called PV-mirror to control its temperature elevation has been numerically studied. This numerical study was carried out to explore the effect of inner fins length on the thermal and electrical improvement of curved PV panel. So a numerical model of heat transfer with solid-liquid phase change has been developed to solve the Navier–Stokes and energy equations. The predicted results are validated with an available experimental and numerical data. Results shows that the use of fins improve the thermal load distribution presented on the upper front of PV/PCM system and maintained it under 42°C compared with another without fins and enhance the PV cells efficiency by more than 2%.

scholarly journals Simulation and Nonlinearity Optimization of a High-Pressure Sensor

Sensors ◽  
2020 ◽  
Vol 20 (16) ◽  
pp. 4419
Author(s):  
Ting Li ◽  
Haiping Shang ◽  
Weibing Wang
Keyword(s):  
High Pressure ◽  
Pressure Sensor ◽  
Pressure Sensors ◽  
Original Model ◽  
Ansys Software ◽  
Nonlinear Error ◽  
Sensor Model ◽  
Optimized Model ◽  
Simulation Results ◽  
Better Than

A pressure sensor in the range of 0–120 MPa with a square diaphragm was designed and fabricated, which was isolated by the oil-filled package. The nonlinearity of the device without circuit compensation is better than 0.4%, and the accuracy is 0.43%. This sensor model was simulated by ANSYS software. Based on this model, we simulated the output voltage and nonlinearity when piezoresistors locations change. The simulation results showed that as the stress of the longitudinal resistor (RL) was increased compared to the transverse resistor (RT), the nonlinear error of the pressure sensor would first decrease to about 0 and then increase. The theoretical calculation and mathematical fitting were given to this phenomenon. Based on this discovery, a method for optimizing the nonlinearity of high-pressure sensors while ensuring the maximum sensitivity was proposed. In the simulation, the output of the optimized model had a significant improvement over the original model, and the nonlinear error significantly decreased from 0.106% to 0.0000713%.

scholarly journals Seasonal Influence of Insolation on Fine-Resolved Air Temperature Variation and Snowmelt

2014 ◽  
Vol 53 (2) ◽  
pp. 323-332 ◽  
Author(s):  
Nikki Vercauteren ◽  
Steve W. Lyon ◽  
Georgia Destouni
Keyword(s):  
Solar Radiation ◽  
Snow Cover ◽  
Eastern Coast ◽  
Seasonal Influence ◽  
Near Surface ◽  
Average Temperature ◽  
Monthly Average ◽  
Air Temperatures ◽  
Low Performance ◽  
Snow Cover Duration

AbstractThis study uses GIS-based modeling of incoming solar radiation to quantify fine-resolved spatiotemporal responses of year-round monthly average temperature within a field study area located on the eastern coast of Sweden. A network of temperature sensors measures surface and near-surface air temperatures during a year from June 2011 to June 2012. Strong relationships between solar radiation and temperature exhibited during the growing season (supporting previous work) break down in snow cover and snowmelt periods. Surface temperature measurements are here used to estimate snow cover duration, relating the timing of snowmelt to low performance of an existing linear model developed for the investigated site. This study demonstrates that linearity between insolation and temperature 1) may only be valid for solar radiation levels above a certain threshold and 2) is affected by the consumption of incoming radiation during snowmelt.

Numerical Simulation on the Temperature Characteristics of Indirect Air Cooling System

2015 ◽  
Vol 741 ◽  
pp. 536-540
Author(s):  
Xiao Zhi Qiu ◽  
Yan Ming Zhao ◽  
Bao Hua Huang ◽  
Wei Xu
Keyword(s):  
Numerical Simulation ◽  
Wind Speed ◽  
Cooling System ◽  
System Change ◽  
Temperature Characteristic ◽  
Air Cooling ◽  
Ansys Software ◽  
System A ◽  
Air Cooling System ◽  
Simulation Results

Based on the analysis of indirect air cooling system, a numerical simulation model of indirect air cooling system was constructed by ANSYS software. According to the different wind speed condition, the temperature characteristic of indirect air cooling system was analyzed. The simulation results show that with the increase of wind speed, the ventilation and heat release of the indirect air cooling system change greatly. It provides a theoretical basis for the design of the wind-proof device of indirect air cooling system.

Design Optimization of Autoswitch Hydrogen Absorption and Desorption Device Using Metal Hydrides

2017 ◽  
Vol 15 (6) ◽  
Author(s):  
Ceng He ◽  
Yuqi Wang ◽  
Jing Song ◽  
Shanshan Li ◽  
Fusheng Yang ◽  
...  
Keyword(s):  
Metal Hydride ◽  
Cycle Time ◽  
Single Cycle ◽  
Desorption Process ◽  
Operation Conditions ◽  
Time Simulation ◽  
Structure Improvement ◽  
New Type ◽  
Simulation Results ◽  
Desorption Cycle

Abstract Metal hydride is an influential and promising material for hydrogen utilization. Researchers have carried out a large number of studies on hydrogen storage apparatus, and developed a few new devices for its promotion. Unfortunately, for most metal hydride reactors, the hydrogenation and dehydrogenation are two independent processes owing to the different required conditions, which could cause many inconveniences and safety problems to the H2 absorption & desorption cycle with high frequency and intensity. Hence we proposed a new type of autoswitch H2 absorption & desorption device based on the structure improvement, which consists of rotation disc, fixed disc and the reactor. The numerical simulation for H2 absorption/desorption using LaNi5 was accomplished, and the optimizations on both structure and operation conditions were achieved within a certain period of cycle time. Simulation results show when the single cycle time is set to 1600 s, the absorption temperature has to be lower than 45 °C (3 MPa) and pressure higher than 1.28 MPa (20 °C), and the desorption temperature should be higher than 41 °C (0.1 MPa) and pressure lower than 0.48 MPa (80 °C) under the same cycle time. Meanwhile, the effects of reaction finish time, operating temperature and H2 pressure during absorption/desorption process was investigated and simulation data were also fitted to develop the structural optimization. Under the hydrogenation/dehydrogenation conditions of 3 MPa (20 °C)/0.1 MPa (80 °C), the simulation results indicate the optimal initial reacted fraction and total cycle time are 0.07 and 1287 s, respectively. Moreover, both structures of autoswitch device with 4 and 6 openings have been optimized to satisfy the requirement of each stage. The autoswitch H2 absorption & desorption device can realize the automatic switch between hydrogenation and dehydrogenation orderly and controllably, which would provide convenience for the occasions with this demand and show its remarkable value during popularization and application.

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