scholarly journals An analysis of temperature distribution in solar photovoltaic module under various environmental conditions

2018 ◽  
Vol 240 ◽  
pp. 04004 ◽  
Author(s):  
Marek Jaszczur ◽  
Qusay Hassan ◽  
Janusz Teneta ◽  
Ewelina Majewska ◽  
Marcin Zych
Keyword(s):  
Heat Transfer ◽  
Temperature Distribution ◽  
Wind Speed ◽  
Solar Radiation ◽  
Environmental Conditions ◽  
Operating Temperature ◽  
Photovoltaic Module ◽  
Solar Photovoltaic ◽  
System Efficiency ◽  
Pv System

The operating temperature of the photovoltaic module is an important issue because it is directly linked with system efficiency. The objective of this work is to evaluate temperature distribution in the photovoltaic module under different environmental conditions. The results shown that photovoltaic module operating temperature depends not only on the ambient temperature or solar radiation dependent but also depends on wind speed and wind direction. It is presented that the mounting conditions which are not taken into consideration by most of the literature models also play a significant role in heat transfer. Depends on mounting type an increase in module operating temperature in the range 10-15oC was observed which cause further PV system efficiency decrease of about 3.8-6.5 %.

scholarly journals Modeling of Monocrystalline PV Cell Considering Ambient Conditions in Baghdad City

2017 ◽  
Vol 13 (3) ◽  
pp. 74-82
Author(s):  
Mohammed E. Abd Al-Wahed ◽  
Osamah F. Abdullateef
Keyword(s):  
Wind Speed ◽  
Solar Radiation ◽  
Ambient Temperature ◽  
Output Power ◽  
Environmental Conditions ◽  
Photovoltaic Module ◽  
Power Performance ◽  
Ambient Conditions ◽  
Cell Temperature ◽  
Ambient Temperatures

Abstract   The environmental conditions are important factors, because they affect both the efficiency of a photovoltaic module and the energy load. This research was carried out experimentally and modeling was done in MATLAB –Simulink by monitoring the variation in power output of the system with environmental conditions such as solar radiation, ambient temperature, wind speed, and humidity of Baghdad city. From the results, the ambient temperatures are inversely proportional to humidity and the output power performance of the system, while the wind speed is directly proportional with the output power performance of the system.     Keywords: Ambient temperature, cell temperature, humidity, Photovoltaic, solar radiation, wind speed.

scholarly journals Heat transfer study of poly-c PV system integrated with phase change material under semi-arid area (Errachidia-Drâa Tafilalet)

2021 ◽  
Vol 297 ◽  
pp. 01008
Author(s):  
Ibtissam Lamaamar ◽  
Amine Tilioua ◽  
Zaineb Benzaid ◽  
Abdelouahed Ait Msaad ◽  
Moulay Ahmed Hamdi Alaoui
Keyword(s):  
Heat Transfer ◽  
Phase Change ◽  
Phase Change Material ◽  
Operating Temperature ◽  
Pv System ◽  
Pv Module ◽  
Solidification Processes ◽  
Change Material ◽  
Transfer Study ◽  
Melting And Solidification

The high operating temperature of the photovoltaic (PV) modules decreases significantly its efficiency. The integration of phase change material (PCM) is one of the feasible techniques for reducing the operating temperature of the PV module. A numerical simulation of the PV module with PCM and without PCM has been realized. The thermal behavior of the PV module was evaluated at the melting and solidification processes of PCM. The results show that the integration of RT35HC PCM with a thickness of 4 cm reduces the temperature of the PV module by 8 °C compared to the reference module. Compared the RT35 and RT35HC, we found that the latent heat has a significant effect on the PCM thermal comportment. Furthermore, it has been found that the thermal resistance of the layers plays an important role to dissipate the heat from the PV cells to the PCM layer, consequently improving the heat transfer inside the PV/PCM system.

scholarly journals Economic and Environmental Multiobjective Optimization of a Wind–Solar–Fuel Cell Hybrid Energy System in the Colombian Caribbean Region

Energies ◽  
2019 ◽  
Vol 12 (11) ◽  
pp. 2119 ◽  
Author(s):  
Guillermo Valencia ◽  
Aldair Benavides ◽  
Yulineth Cárdenas
Keyword(s):  
Fuel Cell ◽  
Wind Speed ◽  
Solar Radiation ◽  
Electric Energy ◽  
Energy System ◽  
Proton Exchange ◽  
Caribbean Region ◽  
Pv System ◽  
Hydrogen Flow ◽  
Simon Bolivar

A hybrid system was analyzed and optimized to produce electric energy in non-interconnected zones in the Colombian Caribbean region, contributing to the reduction of greenhouse gas emissions and the improvement in efficient energy management. A comparative analysis of the performance of hybrid was conducted using a proposed model, built with historical data for meteorological conditions, wind speed, and solar radiation. The model is integrated by a Southwest Wind Power Inc. wind turbine AIR 403, a proton-exchange membrane fuel cell (PEM), an electrolyzer, a solar panel, and a regulator based on proportional, integral, and derivative (PID) controllers to manipulate oxygen and hydrogen flow entering in the fuel cell. The transient responses of the cell voltage, current, and power were obtained for the demand of 200 W under changes in solar radiation and wind speed for each day of the year 2013 in different meteorological stations, such as Ernesto Cortissoz airport, Puerto Bolívar, Alfonso Lopez airport, and Simon Bolívar airport. Through the adjustment of the hydrogen and oxygen flow into the fuel cell, the maximum contribution of power generation from the fuel cell was presented for the Simon Bolívar airport in November with a value of 158.35 W (9.45%). Multiobjective design optimization under a Pareto diagram front is presented for each place studied to minimize the levelized cost of energy and CO2 emission, where the objective control variables are the number of panel and stack in the photovoltaic (PV) system and PEM.

Numerical Assessment on Time-Varying Temperature Field of Bridge Tower under Solar Radiation

2012 ◽  
Vol 204-208 ◽  
pp. 2236-2239 ◽  
Author(s):  
Bo Chen ◽  
Wei Hua Guo ◽  
Chun Fang Song ◽  
Kai Kai Lu
Keyword(s):  
Heat Transfer ◽  
Finite Element ◽  
Temperature Field ◽  
Temperature Distribution ◽  
Solar Radiation ◽  
Ambient Air ◽  
Heat Transfer Analysis ◽  
Time Varying ◽  
Long Span ◽  
Bridge Tower

Bridge tower, time-varying temperature field, heat transfer analysis, finite element model. Abstract. Long span suspension bridges are subjected to daily, seasonal and yearly environmental thermal effects induced by solar radiation and ambient air temperature. This paper aims to investigate the temperature distribution of a tower of a long span suspension bridge. Two-dimensional heat transfer models are utilized to determine the time-dependent temperature distribution of the bridge tower of the bridge. The solar radiation model is utilized to examine the time-varying temperature distribution. Finite element models are constructed for the bridge tower to compute the temperature distribution. The numerical models can successfully predict the structural temperature field at different time. The methodology employed in the paper can be applied to other long-span bridges as well.

Prediction of Building Integrated Photovoltaic Cell Temperatures*

2001 ◽  
Vol 123 (3) ◽  
pp. 200-210 ◽  
Author(s):  
Mark W. Davis ◽  
A. Hunter Fanney ◽  
Brian P. Dougherty
Keyword(s):  
Heat Transfer ◽  
Environmental Conditions ◽  
Solar Irradiance ◽  
Operating Temperature ◽  
Predictive Performance ◽  
Transfer Model ◽  
Cell Temperature ◽  
Widespread Application ◽  
Building Integrated Photovoltaics ◽  
Building Integrated Photovoltaic

A barrier to the widespread application of building integrated photovoltaics (BIPV) is the lack of validated predictive performance tools. Architects and building owners need these tools in order to determine if the potential energy savings realized from building integrated photovoltaics justifies the additional capital expenditure. The National Institute of Standards and Technology (NIST) seeks to provide high quality experimental data that can be used to develop and validate these predictive performance tools. The temperature of a photovoltaic module affects its electrical output characteristics and efficiency. Traditionally, the temperature of solar cells has been characterized using the nominal operating cell temperature (NOCT), which can be used in conjunction with a calculation procedure to predict the module’s temperature for various environmental conditions. The NOCT procedure provides a representative prediction of the cell temperature, specifically for the ubiquitous rack-mounted installation. The procedure estimates the cell temperature based on the ambient temperature and the solar irradiance. It makes the approximation that the overall heat loss coefficient is constant. In other words, the temperature difference between the panel and the environment is linearly related to the heat flux on the panels (solar irradiance). The heat transfer characteristics of a rack-mounted PV module and a BIPV module can be quite different. The manner in which the module is installed within the building envelope influences the cell’s operating temperature. Unlike rack-mounted modules, the two sides of the modules may be subjected to significantly different environmental conditions. This paper presents a new technique to compute the operating temperature of cells within building integrated photovoltaic modules using a one-dimensional transient heat transfer model. The resulting predictions are compared to measured BIPV cell temperatures for two single crystalline BIPV panels (one insulated panel and one uninsulated panel). Finally, the results are compared to predictions using the NOCT technique.

scholarly journals Evaluation of Building Energy Performance with Optimal Control of Movable Shading Device Integrated with PV System

Energies ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1799
Author(s):  
Dong Eun Jung ◽  
Chanuk Lee ◽  
Kwang Ho Lee ◽  
Minjae Shin ◽  
Sung Lok Do
Keyword(s):  
Heat Transfer ◽  
Optimal Control ◽  
Solar Radiation ◽  
Radiation Effects ◽  
Radiation Energy ◽  
Energy Performance ◽  
Control Logic ◽  
Pv System ◽  
Cooling Period ◽  
Shading Device

Among the envelope components (e.g., walls, roofs, floors, and windows, etc.) affecting the cooling and heating load of buildings, windows are the most thermally vulnerable. Shading devices can minimize the thermal load on windows due to solar radiation and decrease radiation effects. However, the load changes due to convection and conduction should be considered. Therefore, when a shading device is applied to a window, control logic for thermal blocking and heat retention is necessary to prevent the load changes. In addition, by combining the opposite features of photovoltaic (PV) that require solar radiation and the shading device to block solar radiation, energy-saving and production can be achieved simultaneously. Therefore, this study minimized the thermal effects of windows using a movable shading device integrated with PV and evaluated the PV power generation. This study evaluated the effects on window heat transfer by applying artificial intelligence techniques, which have recently attracted attention, to system operation. To achieve this, artificial neural network (ANN)-based control logic was developed, and the control performance of the system was assessed using simulations. In ANN control, the window heat transfer was 86.3% lower in a cooling period and 9.7% lower in a heating period compared with that of a shading device fixed at 45°. Furthermore, the PV system produced 3.0 to 3.1% more electric power under optimal control during the cooling period.

scholarly journals EFEITOS DA TEMPERATURA AMBIENTE E DA VELOCIDADE DO VENTO NO DESEMPENHO DE MÓDULOS SOLARES FOTOVOLTAICOS

2019 ◽  
Vol 4 (15) ◽  
pp. 362
Author(s):  
Amaury De Souza ◽  
Ana Paula Garcia Oliveira ◽  
Flavio Aristone ◽  
Vanise Dos Santos Rodrigues ◽  
Gabriel Ozório Linhares Mello
Keyword(s):  
Statistical Analysis ◽  
Wind Speed ◽  
Ambient Temperature ◽  
Environmental Temperature ◽  
Research Work ◽  
Photovoltaic Module ◽  
Solar Photovoltaic ◽  
Positive Linear Relationship ◽  
Module Prediction ◽  
Positive Linear Relation

EFFECTS OF ENVIRONMENTAL TEMPERATURE AND WIND SPEED IN THE PERFORMANCE OF PHOTOVOLTAIC SOLAR MODULESEFECTOS DE LA TEMPERATURA AMBIENTAL Y LA VELOCIDAD DEL VIENTO EN EL DESEMPEÑO DE LOS MÓDULOS SOLARES FOTOVOLTAICOSRESUMOOs efeitos da temperatura ambiente e da velocidade dos ventos na análise de desempenho de um módulo fotovoltaico solar de silício monocristalino foram analisados em Campo Grande, MS, para o período janeiro a dezembro de 2017. O trabalho de pesquisa foi realizado monitorando a variação da eficiência do módulo em função desses parâmetros. Uma análise estatística é apresentada e o resultado indica que os valores do coeficiente de correlação são 96% e 68% para a temperatura ambiente e para velocidade dos ventos, respectivamente, considerando o nível de confiança de 95%. Os resultados mostram que existe uma forte relação linear positiva entre a eficiência do módulo e a temperatura ambiente, e uma relação linear positiva moderada com a velocidade dos ventos.Palavras-chave: Módulo Fotovoltaico; Predição de Eficiência; Condições Climáticas.ABSTRACTThe effects of ambient temperature and wind velocity on the performance analysis of a monocrystalline silicon solar photovoltaic module were analyzed in Campo Grande, MS, from January to December 2017. The research work was carried out by monitoring the efficiency variation of the module according to these parameters. A statistical analysis is presented and the result indicates that the values of the correlation coefficient are 96% and 68% for the ambient temperature and for wind speed, respectively, considering the 95% confidence level. The results show that there is a strong positive linear relationship between the modulus efficiency and the ambient temperature, and a moderate positive linear relation with the velocity of the winds.Keywords: Photovoltaic Module; Prediction of Efficiency; Climate Conditions.RESUMENLos efectos de la temperatura ambiente y de la velocidad de los vientos en el análisis de desempeño de un módulo fotovoltaico solar de silicio monocristalino fueron analizados en Campo Grande, MS, para el período enero a diciembre de 2017. El trabajo de investigación fue realizado monitoreando la variación de la eficiencia del módulo en función de estos parámetros. Se presenta un análisis estadístico y el resultado indica que los valores del coeficiente de correlación son 96% y 68% para la temperatura ambiente y para la velocidad de los vientos, respectivamente, considerando el nivel de confianza del 95%. Los resultados muestran que existe una fuerte relación lineal positiva entre la eficiencia del módulo y la temperatura ambiente, y una relación lineal positiva moderada con la velocidad de los vientos.Palabras clave: Módulo Fotovoltaico; Predicción de Eficiencia; Condiciones Climáticas.

scholarly journals The Use of Floating Solar Panels in Hot Regions Such as Iraq to Benefit in Cooling the Panels and Increasing Their Efficiency

2020 ◽  
Vol 8 (10) ◽  
pp. 01-05
Author(s):  
Ahmed Z. Abass, D.A Pavlyuchenko
Keyword(s):  
Heat Transfer ◽  
Solar Radiation ◽  
Operating Temperature ◽  
Solar Irradiation ◽  
Solar Pv ◽  
Solar Panels ◽  
Negative Effects ◽  
High Radiation ◽  
Photovoltaic Panels

The operating of photovoltaic panels (PV) comes with a serious contradiction. This system of solar PV panels prefers high radiation to generate electricity, but when rising their operating temperature by negative effects on their efficiency. Thus, one of the major working barriers for PV panels is overheating because of surplus solar irradiation. To get rid of the problem of overheating of the panels, we propose a new design that floats on the surface of the water floating photovoltaic panels (FPV) to take advantage of the nature of water in heat transfer, thus cooling the panels and raising the efficiency of the panels. For the purpose of this study, we proposed one of the regions of central Iraq, namely the Marsh Al-Dalmach, which is located in Wasit province, and it is one of the areas rich in solar radiation (2150 kWh/m2/year) and the length of daylight hours more 4000 operating hours during the year. After conducting a survey around the area and collecting the necessary data for use in programs such as Homer and Matlab, great results were obtained, as this design of the stations contributes to reducing temperatures and raising the efficiency of the panels from 15% to 24%.

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