RESULTS OF THE PERFORMANCE NUMERICAL SIMULATION OF A SOLAR CONCENTRATOR MODULE WITH A THERMAL-PHOTOVOLTAIC RECEIVER

2020 ◽  
Vol 4 (41) ◽  
pp. 51-56
Author(s):  
DMITRIY STREBKOV ◽  
◽  
NATAL’YA FILIPPCHENKOVA ◽  
Keyword(s):  
Renewable Energy Sources ◽  
Photovoltaic Cells ◽  
Calculated Data ◽  
Electrical Performance ◽  
Research Purpose ◽  
Photovoltaic Module ◽  
Solar Concentrator ◽  
Ansys Fluent ◽  
Photovoltaic Modules ◽  
Agroindustrial Complex

In the field of energy supply to agro-industrial facilities, there is an increasing interest in the development of structures and engineering systems using renewable energy sources, including solar concentrator thermal and photovoltaic modules that combine photovoltaic modules and solar collectors in one structure. The use of the technology of concentrator heat and photovoltaic modules makes it possible to increase the electrical performance of solar cells by cooling them during operation, and significantly reduces the need for centralized electricity and heat supply to enterprises of the agroindustrial complex. (Research purpose) The research purpose is in numerical modeling of thermal processes occurring in a solar concentrator heat-photovoltaic module. (Materials and methods) Authors used analytical methods for mathematical modeling of a solar concentrator heat and photovoltaic module. Authors implemented a mathematical model of a solar concentrator heat and photovoltaic module in the ANSYS Fluent computer program. The distribution contours of temperature and pressure of the coolant in the module channel were obtained for different values of the coolant flow rate at the inlet. The verification of the developed model of the module on the basis of data obtained in an analytical way has been performed. (Results and discussion) The results of comparing the calculated data with the results of computer modeling show a high convergence of the information obtained with the use of a computer model, the relative error is within acceptable limits. (Conclusions) The developed design of the solar concentrator heat and photovoltaic module provides effective cooling of photovoltaic cells (the temperature of photovoltaic cells is in the operating range) with a module service life of at least twenty-five years. The use of a louvered heliostat in the developed design of a solar concentrator heat and photovoltaic module can double the performance of the concentrator.

Comparison of Predicted to Measured Photovoltaic Module Performance

2009 ◽  
Vol 131 (2) ◽  
Author(s):  
A. Hunter Fanney ◽  
Brian P. Dougherty ◽  
Mark W. Davis
Keyword(s):  
Simulation Model ◽  
Polyvinylidene Fluoride ◽  
Energy Production ◽  
Vertical Wall ◽  
Simulation Models ◽  
Electrical Performance ◽  
Photovoltaic Module ◽  
Photovoltaic Systems ◽  
Photovoltaic Modules ◽  
Module Performance

To accurately predict the electrical performance of photovoltaic modules computer simulation models are essential. Without such models, potential purchasers of photovoltaic systems have insufficient information to judge the relative merits and cost effectiveness of photovoltaic systems. The purpose of this paper is to compare the predictions of a simulation model, developed by Sandia National Laboratories, to measurements from photovoltaic modules installed in a vertical wall façade in Gaithersburg, MD. The photovoltaic modules were fabricated using monocrystalline, polycrystalline, tandem-junction amorphous, and copper-indium diselenide cells. Polycrystalline modules were constructed using three different glazing materials: 6 mm low-iron glass, 0.05 mm ethylene-tetrafluoroethylene copolymer, and 0.05 mm polyvinylidene fluoride. In order to only assess the simulation model’s ability to predict photovoltaic module performance, measured solar radiation data in the plane of the modules is initially used. Additional comparisons are made using horizontal radiation measurements. The ability of the model to accurately predict the temperature of the photovoltaic cells is investigated by comparing predicted energy production using measured versus predicted photovoltaic cell temperatures. The model was able to predict the measured annual energy production of the photovoltaic modules, with the exception of the tandem-junction amorphous modules, to within 6% using vertical irradiance measurements. The model overpredicted the annual energy production by approximately 14% for the tandem-junction amorphous panels. Using measured horizontal irradiance as input to the simulation model, the agreement between measured and predicted annual energy predictions varied between 1% and 8%, again with the exception of the tandem-junction amorphous silicon modules. The large difference between measured and predicted results for the tandem-junction modules is attributed to performance degradation. Power measurements of the tandem-junction amorphous modules at standard reporting conditions prior to and after exposure revealed a 12% decline. Supplying post exposure module parameters to the model resulted in energy predictions within 5% of measured values.

Experimental Study of Temperature Influence on the Electrical Performance of Polycrystalline Photovoltaic Cell

2020 ◽  
Vol 22 (4) ◽  
pp. 1111-1120
Author(s):  
Ahmed Reteri ◽  
Hind Saib ◽  
Zahra Chib
Keyword(s):  
Experimental Study ◽  
Photovoltaic Cells ◽  
Photovoltaic Cell ◽  
Electrical Performance ◽  
Experimental Characterization ◽  
Cell Temperature ◽  
Photovoltaic Modules ◽  
Thermal Transfer ◽  
Actual Operation ◽  
Increasing Temperature

AbstractA thermal photovoltaic hybrid collector enables simultaneous electrical conversion of the solar radiation and recovery of heat absorbed by the cell. This energy cogeneration obviously yields the use of such systems which are very interesting in various fields. During the actual operation of the photovoltaic modules, the experimental characterization shows that the electrical efficiency decreases significantly with increasing temperature of the photovoltaic cells exposed to the sun. Our work focuses on an experimental study carried out in thermal transfer laboratory at the Faculty of Technology of the Tlemcen University, in order to analyze the effect of cell temperature, glazing on electrical performance, also the effect of the cooling of this cell.

scholarly journals Analysis of relaxation of varistor-posistor voltage limiting device in photovoltaic modules during renewal of lighting

2019 ◽  
Vol 27 (2) ◽  
pp. 99-104
Author(s):  
A. S. Tonkoshkur ◽  
A. V. Ivanchenko
Keyword(s):  
Relaxation Time ◽  
Thermal Resistance ◽  
Thermal Contact ◽  
Photovoltaic Cells ◽  
Photovoltaic Module ◽  
Initial State ◽  
Partial Shading ◽  
Photovoltaic Modules ◽  
Cold State ◽  
Solar Arrays

The features of the operation of the circuit method based on a structure of a varistor-PPTC fuse type being in thermal contact to protect the photovoltaic cells from overvoltages arising from the partial shading of the photovoltaic modules of solar arrays are considered. The conditions for the relaxation of the functional characteristics of such voltage limiting devices to the initial state which does not affect the operation of the photovoltaic module during renewal of lighting of the photovoltaic cells are analyzed. It is established that the temperature and resistance dependences of the PPTC element, which determine its state, have a relaxation character at small values of such parameters of the voltage limiting device as the passport values of the resistance of the PPTC element in the conducting (“cold”) state and thermal resistance of the voltage limiting device. The relaxation time is of the order of a few seconds. For large values of the indicated parameters, a situation may occur when such relaxation is absent and the voltage limiting device maintains an active low-conductive (“hot”) state.

A Comparison of Predicted to Measured Photovoltaic Module Performance

2007 ◽  
Author(s):  
A. Hunter Fanney ◽  
Brian P. Dougherty ◽  
Mark W. Davis
Keyword(s):  
Simulation Model ◽  
Polyvinylidene Fluoride ◽  
Energy Production ◽  
Vertical Wall ◽  
Simulation Models ◽  
Electrical Performance ◽  
Photovoltaic Module ◽  
Photovoltaic Systems ◽  
Photovoltaic Modules ◽  
Module Performance

Computer simulation models to accurately predict the electrical performance of photovoltaic modules are essential. Without such models, potential purchasers of photovoltaic systems have insufficient information to judge the relative merits and cost effectiveness of photovoltaic systems. The purpose of this paper is to compare the predictions of a simulation model, developed by Sandia National Laboratories, to measurements from photovoltaic modules installed in a vertical wall fac¸ade in Gaithersburg, MD. The photovoltaic modules were fabricated using monocrystalline, polycrystalline, tandem-junction amorphous, and copper-indium diselenide cells. Polycrystalline modules were constructed using three different glazing materials — 6 mm low-iron glass, 2 mm ethylene-tetrafluoroethylene copolymer (ETFE), and 2 mm polyvinylidene fluoride (PVDF). In order to only assess the simulation model’s ability to predict photovoltaic module performance, measured solar radiation data in the plane of the modules is initially used. Additional comparisons are made using horizontal radiation measurements. The ability of the model to accurately predict the temperature of the photovoltaic cells is investigated by comparing predicted energy production using measured versus predicted photovoltaic cell temperatures. The model was able to predict the measured annual energy production of the photovoltaic modules, with the exception of the tandem-junction amorphous modules, to within 6% using vertical irradiance measurements. The model overpredicted the annual energy production by approximately 14% for the tandem-junction amorphous panels. Using measured horizontal irradiance as input to the simulation model, the agreement between measured and predicted annual energy predictions varied between 1% and 8%, again with the exception of the tandem-junction amorphous silicon modules. The large difference between measured and predicted results for the tandem-junction modules is attributed to performance degradation. Power measurements of the tandem-junction amorphous modules at standard reporting conditions prior to and after exposure revealed a 12% decline. Supplying post-exposure module parameters to the model resulting in energy predictions within 5% of measured values.

Thermal and Electrical Performance of a PV Module Integrated With Microencapsulated Phase Change Material

2013 ◽  
Author(s):  
C. J. Ho ◽  
A. O. Tanuwijaya ◽  
Chi-Ming Lai
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Temporal Variations ◽  
Solar Irradiation ◽  
Electrical Performance ◽  
Photovoltaic Module ◽  
Photovoltaic Modules ◽  
Material Layer ◽  
Microencapsulated Phase Change Material ◽  
Change Material

The efficiency in photovoltaic modules decreases as the cell temperature increases. It is necessary to have adequate thermal management mechanism for a photovoltaic module, especially when combined with building facade. This study aims to investigate the thermal and electrical performance of a photovoltaic module integrated with a microencapsulated phase change material layer under temporal variations of daily solar irradiation and exterior ambient temperature, via computational fluid dynamics simulations. The results show that the melting temperature and aspect ratio of the microencapsulated phase change material layer have significant effects on the thermal and electrical performances of photovoltaic modules.

Justification for Unscheduled Maintenance of Solar Panels Used as a Power Supply for Sprinkler Machines

2020 ◽  
Vol 67 (1) ◽  
pp. 16-21
Author(s):  
Sergey M. Bakirov ◽  
Sergey S. Eliseev
Keyword(s):  
Power Supply ◽  
Power Loss ◽  
Renewable Energy Sources ◽  
Operating Mode ◽  
Dust Storms ◽  
Research Purpose ◽  
Solar Panels ◽  
Solar Module ◽  
Empirical Observation ◽  
Modern Level

The modern level of agriculture is described by the introduction of renewable energy sources. New generation sprinkler machines are being put into production, in the power system of which solar panels are used. One of the factors that negatively affect the performance of solar cells in an open field is their dusting, which is formed as a result of dust storms and wind. Cleaning of the battery panels is carried out in various ways: manual, semi-automatic and automatic. Dust cleaning is included in maintenance. (Research purpose) The research purpose is to determine the conditions for performing the maintenance, which consists in cleaning solar panels in the field. (Materials and methods) Theoretical (analysis, hypothesis design), empirical (observation, testing), experimental (ascertaining experiment) methods has been used during research. (Results and discussion) The article describes an introduced parameter for estimating the level of dusting. The power loss indicator shows the ratio of the power of the dusted module to the power of the clean module. Unscheduled maintenance is affected by the distance of the solar module from the repair point, the power of the solar module, the loss from dusting, the frequency of maintenance and cost indicators. (Conclusions) It has been found the dependence of maintenance period of the solar module of the sprinkler machine on the distance to the sprinkler machine, to the point of maintenance and repair, the power loss coefficient in case of dusting of the solar module, the cost of performing maintenance, as well as the frequency of maintenance. Article describes the boundaries of the choice of operating mode of the sprinkler between unscheduled maintenance for cleaning the solar module and the acceptance of additional power of the sprinkler power supply system according to the criterion of minimum operating costs.

scholarly journals Analytical Predictions of Liquid and Air Photovoltaic/Thermal, Flat-Plate Collector Performance

1981 ◽  
Vol 103 (4) ◽  
pp. 291-298 ◽  
Author(s):  
P. Raghuraman
Keyword(s):  
Total Energy ◽  
Flat Plate ◽  
Temperature Difference ◽  
Photovoltaic Cells ◽  
Electrical Performance ◽  
One Dimensional ◽  
Design Recommendations ◽  
Flat Plate Collector

Two separate one-dimensional analyses have been developed for the prediction of the thermal and electrical performance of both liquid and air flat-plate, photovoltaic/thermal (PV/T) collectors. The analyses account for the temperature difference between the primary insolation absorber (the photovoltaic cells) and secondary absorber (a thermal absorber flat plate). The results of the analyses are compared with test measurements, and therefrom design recommendations are made to maximize the total energy extracted from the collectors.

scholarly journals Experimental Investigation of a Novel Absorptive/Reflective Solar Concentrator: A Thermal Analysis

Energies ◽  
2020 ◽  
Vol 13 (5) ◽  
pp. 1281 ◽  
Author(s):  
Alok Dayanand ◽  
Muhsin Aykapadathu ◽  
Nazmi Sellami ◽  
Mehdi Nazarinia
Keyword(s):  
Experimental Investigation ◽  
Cooling System ◽  
Electrical Performance ◽  
Solar Concentrator ◽  
Cell Temperature ◽  
Compound Parabolic Concentrator ◽  
Pv Cell ◽  
Overall Efficiency ◽  
First Time ◽  
Absorber Surface

This paper presents the experimental investigation of a novel cross-compound parabolic concentrator (CCPC). For the first time, a CCPC module was designed to simultaneously work as an electricity generator and collect the thermal energy present in the module which is generated due to the incident irradiation. This CCPC module consists of two regions: an absorber surface atop the rig and a reflective region below that to reflect the irradiation onto the photovoltaic (PV) cell, coupled together to form an absorptive/reflective CCPC (AR-CCPC) module. A major issue in the use of PV cells is the decrease in electrical conversion efficiency with the increase in cell temperature. This module employs an active cooling system to decrease the PV cell temperature, optimizing the electrical performance and absorbing the heat generated within the module. This system was found to have an overall efficiency of 63%, which comprises the summation of the electrical and thermal efficiency posed by the AR-CCPC module.

Sign in / Sign up

Export Citation Format

Share Document