Photogrammetry: A Powerful Tool for Geometric Analysis of Solar Concentrators and Their Components

Solar Energy ◽  
2004 ◽  
Author(s):  
Klaus Pottler ◽  
Eckhard Lu¨pfert ◽  
Glen H. G. Johnston ◽  
Mark R. Shortis
Keyword(s):  
Geometric Analysis ◽  
Solar Concentrator ◽  
Measurement Instruments ◽  
Solar Concentrators ◽  
Gravitational Forces ◽  
Surface Data ◽  
Efficient Measurement ◽  
Close Range ◽  
Coordinate Measurements ◽  
Selection Of

Digital close range photogrammetry has proven to be a precise and efficient measurement technique for the assessment of shape accuracies of solar concentrators and their components. The combination of high quality mega-pixel digital still cameras, appropriate software and calibrated reference scales in general is sufficient to provide coordinate measurements with precisions of 1:50,000 or better. The extreme flexibility of photogrammetry to provide high accuracy 3-D coordinate measurements over almost any scale makes it particularly appropriate for the measurement of solar concentrator systems. It can also provide information for the analysis of curved shapes and surfaces, which can be very difficult to achieve with conventional measurement instruments. The paper gives an overview of quality indicators for photogrammetric networks, which have to be considered during the data evaluation to augment the measurement precision. A selection of measurements done on whole solar concentrators and their components are presented. The potential of photogrammetry is demonstrated by presenting measured effects arising from thermal expansion and gravitational forces on selected components. The measured surface data can be used to calculate slope errors and undertake raytrace studies to compute intercept factors and assess concentrator qualities.

Photogrammetry: A Powerful Tool for Geometric Analysis of Solar Concentrators and Their Components

2005 ◽  
Vol 127 (1) ◽  
pp. 94-101 ◽  
Author(s):  
Klaus Pottler ◽  
Eckhard Lu¨pfert ◽  
Glen H. G. Johnston ◽  
Mark R. Shortis
Keyword(s):  
Geometric Analysis ◽  
Solar Concentrator ◽  
Measurement Instruments ◽  
Solar Concentrators ◽  
Gravitational Forces ◽  
Surface Data ◽  
Efficient Measurement ◽  
Close Range ◽  
Coordinate Measurements ◽  
Selection Of

Digital close range photogrammetry has proven to be a precise and efficient measurement technique for the assessment of shape accuracies of solar concentrators and their components. The combination of high quality mega-pixel digital still cameras, appropriate software, and calibrated reference scales in general is sufficient to provide coordinate measurements with precisions of 1:50,000 or better. The extreme flexibility of photogrammetry to provide high accuracy 3D coordinate measurements over almost any scale makes it particularly appropriate for the measurement of solar concentrator systems. It can also provide information for the analysis of curved shapes and surfaces, which can be very difficult to achieve with conventional measurement instruments. The paper gives an overview of quality indicators for photogrammetric networks, which have to be considered during the data evaluation to augment the measurement precision. A selection of measurements done on whole solar concentrators and their components are presented. The potential of photogrammetry is demonstrated by presenting measured effects arising from thermal expansion and gravitational forces on selected components. The measured surface data can be used to calculate slope errors and undertake ray-trace studies to compute intercept factors and assess concentrator qualities.

Dual-sensitized upconversion-assisted, triple-band absorbing luminescent solar concentrators

Nanoscale ◽  
2020 ◽  
Vol 12 (33) ◽  
pp. 17265-17271
Author(s):  
Seong Kyung Nam ◽  
Kiwon Kim ◽  
Ji-Hwan Kang ◽  
Jun Hyuk Moon
Keyword(s):  
Solar Light ◽  
Photovoltaic Systems ◽  
Solar Concentrator ◽  
Solar Concentrators ◽  
Luminescent Solar Concentrators ◽  
Luminescent Solar Concentrator ◽  
Triple Band

Luminescent solar concentrator-photovoltaic systems (LSC-PV) harvest solar light by using transparent photoluminescent plates, which is expected to be particularly useful for building-integrated PV applications.

scholarly journals Cost-effective solar concentrators based on red fluorescent Zn(ii)–salicylaldiminato complex

RSC Advances ◽  
2016 ◽  
Vol 6 (21) ◽  
pp. 17474-17482 ◽  
Author(s):  
Pierpaolo Minei ◽  
Elisabetta Fanizza ◽  
Antonio M. Rodríguez ◽  
Ana B. Muñoz-García ◽  
Paola Cimino ◽  
...  
Keyword(s):  
Zinc Complex ◽  
Red Light ◽  
Cost Effective ◽  
Solar Concentrator ◽  
Solar Concentrators ◽  
Luminescent Solar Concentrator

A red light and concentrated zinc complex embedded in PMMA yields a cost-effective and efficient luminescent solar concentrator.

scholarly journals The Spectacular Undular Bore in Iowa on 2 October 2007

2009 ◽  
Vol 137 (1) ◽  
pp. 495-503 ◽  
Author(s):  
Timothy A. Coleman ◽  
Kevin R. Knupp ◽  
Daryl Herzmann
Keyword(s):  
Doppler Radar ◽  
High Density ◽  
Undular Bore ◽  
Des Moines ◽  
Surface Data ◽  
Close Range ◽  
Surface Observations

Abstract A visually impressive undular bore moved across much of Iowa on 2 October 2007, and video animations were captured by numerous Webcams. The bore was sampled very well by Doppler radar at close range, and also by the high-density mesoscale network of surface stations in place over Iowa and 1-min Automated Surface Observing System (ASOS) surface data at Des Moines, Iowa. Radar and surface observations are presented, along with a brief analysis of the structure of the bore.

scholarly journals PROPRIEDADES PSICOMÉTRICAS DE INSTRUMENTOS DE MEDIDAS: BASES CONCEITUAIS E MÉTODOS DE AVALIAÇÃO - PARTE I

2018 ◽  
Vol 26 (4) ◽  
Author(s):  
Maria Elena Echevarría-Guanilo ◽  
Natália Gonçalves ◽  
Priscila Juceli Romanoski
Keyword(s):  
Patient Reported Outcomes ◽  
Measurement Instruments ◽  
Health Measurement ◽  
Patient Reported ◽  
Selection Of

RESUMO Objetivo: apresentar e discutir bases conceituais e métodos de avaliações que fundamentam importantes propriedades de instrumentos de medidas. Método: estudo teórico embasado na literatura internacional e nacional e nos instrumentos Consensus-based Standards for the selection of health Measurement Instruments e Evaluating the Measurement of Patient-Reported Outcomes que contemplam conceitos de avaliação de instrumentos para apreciação de resultados relatados pelo paciente. Inicialmente são apresentados e discutidos os conceitos de confiabilidade, responsividade e interpretabilidade, citados exemplos das principais formas de avaliação dessas propriedades. Resultados: pode-se perceber que ainda há divergências em algumas descrições conceituais. Entretanto, os autores ressaltam a importância da confiabilidade para avaliar o instrumento de medida. Destaca-se a importância do conhecimento do Modelo Conceitual, das propriedades de medidas e dos diferentes métodos de avaliação para garantir, principalmente em estudo de validação de instrumentos, resultados confiáveis e válidos. Conclusões: a discussão apresentada sobre a confiabilidade, responsividade e interpretabilidade contribui para os profissionais de saúde no conhecimento teórico e senso crítico na escolha de instrumentos e na condução de análises sobre essas propriedades de medida.

Optical Analysis of Solar Concentrators Using Photogrammetry Process

2017 ◽  
pp. 175-201
Author(s):  
Safa Skouri ◽  
Salwa Bouadila
Keyword(s):  
Measurement Technique ◽  
Measurement Techniques ◽  
High Impact ◽  
Geometric Errors ◽  
Solar Concentrator ◽  
Optical Analysis ◽  
Optical Efficiency ◽  
Solar Concentrators ◽  
Displacement Error ◽  
Slope Error

As the optical efficiency of solar concentrators has a high impact on its thermal performance. However a qualification method determining the geometrical accuracy of a solar concentrator system is necessary. The purpose of this chapter is to gives an optical analysis of solar concentrator with an imaging process in order to improve the thermal efficiency of the solar concentrator. In this order measurement techniques used to determine geometric errors of the solar concentrating system have been described. Intercept factor, slope error and displacement error have been identified and analyzed. Examples of the intercept factor for concentrator reflector along with optical efficiency has been developed and determined related to the experimental results given by photogrammetry measurement technique.

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