The design of beam shaping focused lens applied in solar energy concentration

2011 ◽  
Author(s):  
Shih-Hsin Ma ◽  
Chi-Hung Lee ◽  
Yun-Parn Lee ◽  
Jih-Huah Wu ◽  
Chun-Ming Tseng
Keyword(s):  
Solar Energy ◽  
Beam Shaping ◽  
Energy Concentration

Exergy, Exergoeconomic, Exergoenvironmental, Emergy-based Assessment and Advanced Exergy-based Analysis of an Integrated Solar Combined Cycle Power Plant

2021 ◽  
pp. 0958305X2110635
Author(s):  
M. Nourpour ◽  
M. H. Khoshgoftar Manesh ◽  
A. Pirozfar ◽  
M. Delpisheh
Keyword(s):  
Solar Energy ◽  
Exergy Analysis ◽  
Thermodynamic Simulation ◽  
Combined Cycle ◽  
Energy Concentration ◽  
Analysis Tool ◽  
Matlab Code ◽  
Cycle System ◽  
Depth Analysis ◽  
Advanced Analysis

The high amount of solar energy as clean and sustainable energy has increased awareness in solar energy concentration, especially in integrated concepts. One of the best and promising hybrid configurations for converting solar energy into power is an integrated solar combined cycle system (ISCCS). In this study, conventional and advanced analysis tools for the ISCCS located in Yazd (Iran) have been investigated. In this paper, thermodynamic simulation, exergy, exergoeconomic, and exergoenvironmental analysis based on Life Cycle Assessment (LCA) have been performed. In addition, an emergy-based concept, including emergoeconomic and emergoenvironmental assessment, has been performed. In-depth analysis of exergy, exergoeconomic, and exergoenvironmental modelling, advanced exergy analysis based on endogenous/exogenous and avoidable/unavoidable parts have been done. In this regard, MATLAB code has been developed for thermodynamic simulation, exergy, exergoeconomic, exergoenvironment, emergoeconomic and emergoenvironment analysis. Furthermore, THERMOFLEX (commercial software) applied for thermodynamic simulation and verification. The Sankey diagram based on each analysis tool has been constructed. Furthermore, the priority of improvement based on each analysis has been identified. The thermal efficiency and net power generation of ISCCS are 48.25% and 419600 kW, respectively. It was obsereved that in most equipment, less than 10% of exergy destruction and cost and environmental impact rates were avoidable/endogenous.

High solar energy concentration with a Fresnel lens

2005 ◽  
Vol 40 (6) ◽  
pp. 1339-1343 ◽  
Author(s):  
Cristina Sierra ◽  
Alfonso J. Vázquez
Keyword(s):  
Solar Energy ◽  
Fresnel Lens ◽  
Energy Concentration

scholarly journals A Novel Hexagonal Beam Steering Electrowetting Device for Solar Energy Concentration

Micromachines ◽  
2020 ◽  
Vol 11 (11) ◽  
pp. 1016
Author(s):  
Iftekhar Khan ◽  
Stefania Castelletto ◽  
Gary Rosengarten
Keyword(s):  
Solar Energy ◽  
Beam Steering ◽  
Dielectric Materials ◽  
Hexagonal Structure ◽  
Energy Concentration ◽  
Proof Of Concept ◽  
Hexagonal Cell ◽  
Energy Applications ◽  
Flat Interface ◽  
3D Simulation Model

Traditional tracking devices for solar energy applications have several disadvantages, such as bulky mechanical structure, large wind loads, and ease of misalignment. This study aims to design a flat, thin, and adaptive beam steering device to eliminate these drawbacks. A proof of concept device was fabricated to demonstrate this design. The novelty of the proof of concept device is the hexagonal structure of the electrowetting cell design. The hexagonal cell was dosed with two immiscible liquids with different refractive indices. The hypothesis of this design is that by deforming the liquid shape with the application of voltage, light can be steered and concentrated for solar energy applications. A maximum contact angle change of 44° was observed with the application of 26 V to one of the electrodes of the hexagonal cell. The device demonstrated a 4.5° change of laser beam path with only a 0.2 refractive index difference of the liquids. The 3D simulation model developed in this study shows that a tilted and flat interface can be achieved using higher dielectric constant dielectric materials. The device can facilitate the planer steering and concentration of sunlight for rooftop applications without moving mechanical parts.

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