Investigation of solar hybrid system with concentrating Fresnel lens, photovoltaic and thermoelectric generators

2016 ◽  
Vol 41 (3) ◽  
pp. 377-388 ◽  
Author(s):  
F. J. Willars-Rodríguez ◽  
E. A. Chávez-Urbiola ◽  
P. Vorobiev ◽  
Yu. V. Vorobiev
Keyword(s):  
Hybrid System ◽  
Fresnel Lens ◽  
Thermoelectric Generators

scholarly journals Performance Comparison Between Hot Mirror and Cold Mirror as a Beam Splitter on Photovoltaic - Thermoelectric Generator Hybrid Using LabVIEW Simulator

2021 ◽  
Vol 39 (5) ◽  
pp. 1609-1617
Author(s):  
Zuryati Djafar ◽  
Andi Zahirah Salsabila ◽  
Wahyu H. Piarah
Keyword(s):  
Solar Radiation ◽  
Thermoelectric Generator ◽  
Beam Splitter ◽  
Radiation Spectrum ◽  
Electrical Energy ◽  
Fresnel Lens ◽  
Performance Comparison ◽  
Spectral Irradiance ◽  
Thermoelectric Generators ◽  
Labview Program

Solar energy can be converted into electrical energy using photovoltaic (PV) and thermoelectric generators (TEG). In order to increase the effectiveness of energy absorption, a hot mirror or cold mirror spectrum separator is used. In this study, a simulation was carried out to see the effect of the cold mirror and hot mirror spectrum separator on the performance of the PV-TEG hybrid. Simulations are carried out using the LabVIEW program. The standard for the solar radiation spectrum used is AM1.5D. The incoming radiation is transmitted using a Fresnel lens to make it more focused and then transmitted to a cold mirror or hot mirror, where the spectral irradiance will be halved. Spectral irradiance with a wavelength of 400-690 nm will be directed to PV and a wavelength of 710-1150 nm will be directed to TEG. From the PV-TEG hybrid modeling and simulation using the LabVIEW program, the resulting power and efficiency are 240.635 W/m2 and 27% respectively for cold mirror and 228.835 W/m2 and 25.76% for hot mirror.

Performance Analysis of Multi-Layer Thermoelectric Generators to be Used in a Thermoelectric Generator-Stirling Engine Hybrid System

2015 ◽  
Author(s):  
Mohammed Waliur Rahman ◽  
Khamid Mahkamov
Keyword(s):  
Performance Analysis ◽  
Low Temperature ◽  
Hybrid System ◽  
Temperature Difference ◽  
Thermoelectric Generator ◽  
Thermal Flux ◽  
Stirling Engine ◽  
Total Power ◽  
Thermoelectric Generators ◽  
Study Results

This paper demonstrates the performance analysis of various arrangements of thermoelectric generators to be used for the combination of a Low Temperature Difference Stirling Engine-Thermoelectric Generator hybrid system. To estimate whether the deployed Stirling Engines will perform on satisfactory level it is necessary to determine if a sufficient thermal flux can be provided to the heating part of the Low Temperature Difference Stirling Engine (LTD SE) from the “cold” side of the thermoelectric generator or their combination. This paper reports study results on the performance of a single layer and a cascaded two-layer thermoelectric generator made up of bulk material. These two generators were connected in series and in parallel to produce the combined thermoelectric module operating as a three-layer generator. Also computational data on the temperature distribution across the layers has been obtained using Finite Element Analysis as a part of ANSYS software. Results obtained demonstrate that both the single and two-layer generators provide sufficient heat flux to drive LTD SEs but the total power output from the two-layer generator-Stirling Engine system is considerable higher when the engine is coupled to a single and three-layered thermoelectric generator.

scholarly journals Solar Hybrid System Component Study in Low Concentrated Sunlight

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Petru A. Cotfas ◽  
Daniel T. Cotfas
Keyword(s):  
Renewable Energy ◽  
Hybrid System ◽  
Concentration Ratio ◽  
Research Direction ◽  
Fresnel Lens ◽  
Active Area ◽  
System Component ◽  
Exposed Surface ◽  
Graphite Sheet ◽  
Ceramic Support

The solar energy is increasingly used as a renewable energy source. Raising the efficiency of energy conversion from solar to useful energy (electric and thermal) represents an important research direction in the renewable energy domain. Using hybrid systems for electric and thermal energy cogeneration can be a solution. In this study, a hybrid system (HS) is designed, manufactured, implemented, and experimentally tested under concentrated sunlight with a concentration ratio of 25 suns, obtained using a Fresnel lens as a sunlight concentrator. The HS comprises of four concentrated photovoltaic cells (CPVs), four thermoelectric generators (TEGs), and a solar thermal collector (STC). The HS is studied in three configurations of the exposed surface: only the CPV active area, the CPV active area with ceramic support, and the CPV active area with ceramic support covered with graphite sheet. Results reveal that the efficiency of each system component is affected by the exposed surface. If the efficiencies of the CPVs decrease from 32.3% to 30.8% from the first configuration to the last one, the efficiencies of TEGs and STC increase from 0.12% to 0.44 and from 26.3% to 52.0%, respectively. Increasing the concentration ratio from 25 to 33 suns, the power of the CPVs increases with almost 31%, but the efficiency decreases slightly, instead the efficiencies of the TEGs and STC increase.

Kryothermie-Hybrid-System mit intern gasgekühltem Applikator zur Radiofrequenzablation

2007 ◽  
Vol 179 (S 1) ◽  
Author(s):  
H Rempp ◽  
S Clasen ◽  
M Voigtländer ◽  
S Kempf ◽  
A Weihusen ◽  
...  
Keyword(s):  
Hybrid System

Control of odor using an electrostatic precipitator andadsorption hybrid system in unregulated facilities

2014 ◽  
Vol 13 (2) ◽  
pp. 113-123 ◽  
Author(s):  
Hak-Song Jeon ◽  
◽  
Jong-Min Kim ◽  
Kwang-Han Bae ◽  
Tae-Oh Kim
Keyword(s):  
Hybrid System ◽  
Electrostatic Precipitator

“Collective Redress” in European Competition Law

2016 ◽  
Vol 14 (4) ◽  
pp. 388-414
Author(s):  
Alexandra P. Mikroulea
Keyword(s):  
Hybrid System ◽  
Competition Law ◽  
Mixed System ◽  
Basic Question ◽  
Effective Implementation ◽  
The United Kingdom ◽  
Collective Redress ◽  
Opt Out ◽  
Private Autonomy ◽  
European Competition Law

AbstractOpt-in or opt-out? That is the basic question to be answered. The decision to promote actions of “opt-in” type as opposed to those of the “opt-out” type, for the sake of private autonomy, does not ensure the effective application of european competition law. On the contrary, it may decrease the application’s intensity and effectiveness. Recent reforms among European state members such as in the United Kingdom, Belgium, the Netherlands, Denmark and Norway are powerful indications that the opt-out principle may result in the effective implementation of competition law. There is no doubt that a mixed system (hybrid system), providing the court with the power to decide in favour of either the opt-in or the opt-out system, will result in better implementation of competition law. At the present time there are two pending cases in England (Dorothy Gibson and Mastercard) for which the decision on opt-out or opt-in are highly anticipated. Should the court decide, in one or both of the cases, on an opt-out approach, this will bring a momentous reevaluation of the entire collective redress concept.

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