Optical Design of an Infrared Non-Imaging Device for a Full-Spectrum Solar Energy System

2004 ◽  
Vol 126 (1) ◽  
pp. 676-679 ◽  
Author(s):  
Dan Dye ◽  
Byard Wood ◽  
Lewis Fraas ◽  
Jeff Muhs
Keyword(s):  
Solar Energy ◽  
Research Team ◽  
National Laboratory ◽  
Optical Design ◽  
Energy System ◽  
Full Spectrum ◽  
Imaging Device ◽  
Oak Ridge ◽  
Secondary Mirror ◽  
The University

A full-spectrum solar energy system is being designed by a research team lead by Oak Ridge National Laboratory and the University of Nevada, Reno. [1,2] The benchmark collector/receiver and prototype thermophotovoltaic (TPV) array have been built [3], so the work performed here is to match the two systems together for optimal performance. It is shown that a hollow, rectangular-shaped non-imaging (NI) device only 23 cm long can effectively distribute the IR flux incident on the TPV array mounted behind the secondary mirror. Results of the ray-tracing analysis of the different systems tested are presented.

Optical Design of an Infrared Non-Imaging Device for a Full-Spectrum Solar Energy System

Solar Energy ◽  
2003 ◽  
Author(s):  
Dan Dye ◽  
Byard Wood ◽  
Lewis Fraas ◽  
Jeff Muhs
Keyword(s):  
Solar Energy ◽  
National Laboratory ◽  
Optical Design ◽  
Electrical Power ◽  
Solar Spectrum ◽  
Energy System ◽  
Full Spectrum ◽  
Imaging Device ◽  
Oak Ridge ◽  
Receiver System

A solar collector/receiver system for a full-spectrum solar energy system is being designed by a research team lead by Oak Ridge National Laboratory and the University of Nevada, Reno. [1,2] This solar energy system is unique in that it utilizes the majority of the solar spectrum by splitting the infrared (IR) and visible energy for two different end uses. The visible light will be used for day lighting and the IR energy for electrical power generation. This paper is concerned with the optics that will provide uniform irradiance of the IR energy on the thermal photovoltaic (TPV) array. The benchmark full-spectrum collector/receiver and prototype TPV array have been built [3], so the work performed here is to match the two systems together for optimal performance. The design consists of a non-imaging (NI) system for the IR flux incident on the TPV array mounted behind the secondary mirror. Results of the ray-tracing analysis of the different systems tested are presented.

Demonstration of Infrared-Photovoltaics for a Full-Spectrum Solar Energy System

2005 ◽  
Vol 128 (1) ◽  
pp. 30-33 ◽  
Author(s):  
Dan Dye ◽  
Byard Wood ◽  
Lewis Fraas ◽  
Jeanette Kretschmer
Keyword(s):  
Solar Energy ◽  
Gallium Antimonide ◽  
Solar Spectrum ◽  
Energy System ◽  
Maximum Efficiency ◽  
Infrared Transmission ◽  
Full Spectrum ◽  
Imaging Device ◽  
Pv Array ◽  
Experimental Apparatus

A nonimaging (NI) device and infrared-photovoltaic (IR-PV) array for use in a full-spectrum solar energy system has been designed, built, and tested (Dye et al., 2003, “Optical Design of an Infrared Non-Imaging Device for a Full-Spectrum Solar Energy System,” Proceedings of the ASME International Solar Energy Society Conference; Dye and Wood, 2003, Infrared Transmission Efficiency of Refractive and Reflective Non-Imaging Devices for a Full-Spectrum Solar Energy System,” Nonimaging Optics: Maximum Efficiency Light Transfer VII, Proc. SPIE, 5185; Fraas et al., 2001, Infrared Photovoltaics for Combined Solar Lighting and Electricity for Buildings,” Proceedings of 17th European Photovoltaic Solar Energy Conference}. This system was designed to utilize the otherwise wasted infrared (IR) energy that is separated from the visible portion of the solar spectrum before the visible light is harvested. The IR energy will be converted to electricity via a gallium antimonide (GaSb) IR-PV array. The experimental apparatus for the testing of the IR optics and IR-PV performance is described. Array performance data will be presented, along with a comparison between outdoor experimental tests and laboratory flash tests. An analysis of the flow of the infrared energy through the collection system will be presented, and recommendations will be made for improvements. The IR-PV array generated a maximum of 26.7W, demonstrating a conversion efficiency of the IR energy of 12%.

Feasibility Study of Solar Energy System at the University of North Dakota

2019 ◽  
Author(s):  
Bo K. Yesel ◽  
Jonathan J. Eslinger ◽  
Michael Nord ◽  
Daisy Flora Selvaraj ◽  
Prakash Ranganathan
Keyword(s):  
Solar Energy ◽  
North Dakota ◽  
Feasibility Study ◽  
Energy System ◽  
University Of North Dakota ◽  
The University

scholarly journals Dynamic Analysis of Electrical Power Grid Delivery: Using Prime Mover Engines to Balance Dynamic Wind Turbine Output

2011 ◽  
Author(s):  
Diana K. Grauer ◽  
Michael E. Reed
Keyword(s):  
Renewable Energy ◽  
Wind Turbine ◽  
Research Team ◽  
Combustion Engine ◽  
National Laboratory ◽  
Electrical Power ◽  
Energy System ◽  
Electrical Transmission ◽  
Reciprocating Engine ◽  
Electrical Generation

This paper presents an investigation into integrated wind + combustion engine high penetration electrical generation systems. Renewable generation systems are now a reality of electrical transmission. Unfortunately, many of these renewable energy supplies are stochastic and highly dynamic. Conversely, the existing national grid has been designed for steady state operation. The research team has developed an algorithm to investigate the feasibility and relative capability of a reciprocating internal combustion engine to directly integrate with wind generation in a tightly coupled Hybrid Energy System. Utilizing the Idaho National Laboratory developed Phoenix Model Integration Platform, the research team has coupled demand data with wind turbine generation data and the Aspen Custom Modeler reciprocating engine electrical generator model to investigate the capability of reciprocating engine electrical generation to balance stochastic renewable energy.

scholarly journals Electrical Power Grid Delivery Dynamic Analysis: Using Prime Mover Engines to Balance Dynamic Wind Turbine Output

2011 ◽  
Author(s):  
Diana K. Grauer ◽  
Michael E. Reed
Keyword(s):  
Renewable Energy ◽  
Wind Turbine ◽  
Research Team ◽  
Combustion Engine ◽  
National Laboratory ◽  
Electrical Power ◽  
Energy System ◽  
Electrical Transmission ◽  
Reciprocating Engine ◽  
Electrical Generation

This paper presents an investigation into integrated wind + combustion engine high penetration electrical generation systems. Renewable generation systems are now a reality of electrical transmission. Unfortunately, many of these renewable energy supplies are stochastic and highly dynamic. Conversely, the existing national grid has been designed for steady state operation. The research team has developed an algorithm to investigate the feasibility and relative capability of a reciprocating internal combustion engine to directly integrate with wind generation in a tightly coupled Hybrid Energy System. Utilizing the Idaho National Laboratory developed Phoenix Model Integration Platform, the research team has coupled demand data with wind turbine generation data and the Aspen Custom Modeler reciprocating engine electrical generator model to investigate the capability of reciprocating engine electrical generation to balance stochastic renewable energy.

scholarly journals Preface

2021 ◽  
Vol 2122 (1) ◽  
pp. 011001
Keyword(s):  
Condensed Matter ◽  
National Laboratory ◽  
Status Report ◽  
Condensed Matter Physics ◽  
High Quality Research ◽  
Oak Ridge ◽  
University Of Georgia ◽  
Interactive Workshop ◽  
Computer Simulation Studies ◽  
The University

Abstract Thirty three years ago, because of the dramatic increase in the power and utility of computer simulations, The University of Georgia formed the first institutional unit devoted to the application of simulations in research and teaching: The Center for Simulational Physics. Then, as the international simulations community expanded further, we sensed the need for a meeting place for both experienced simulators and newcomers to discuss inventive algorithms and recent results in an environment that promoted lively discussion. As a consequence, the Center for Simulational Physics established an annual workshop series on Recent Developments in Computer Simulation Studies in Condensed Matter Physics. This year’s highly interactive workshop was the 32nd in the series marking our efforts to promote high quality research in simulational physics. The continued interest shown by the scientific community amply demonstrates the useful purpose that these meetings have served. The latest workshop was held at The University of Georgia from February 18-22, 2019. These Proceedings provide a “status report” on a number of important topics. This on-line “volume” is published with the goal of timely dissemination of the material to a wider audience. These Proceedings contain both invited papers and contributed presentations on problems in both classical and quantum condensed matter physics. The Workshop was prefaced by a special tutorial presented by colleagues from Oak Ridgr National Laboratory on a powerful software suite: OWL (Oak Ridge Wang-Landau). The first manuscript in this Proceedings is devoted to this tutorial material. The Workshop topics, as usual, ranged from hard and soft condensed matter to biologically inspired problems and purely methodological advances. We hope that readers will benefit from specialized results as well as profit from exposure to new algorithms, methods of analysis, and conceptual developments. D. P. Landau M. Bachmann S. P. Lewis H.-B. Schüttler

scholarly journals SiC-Based Power Converters

2008 ◽  
Vol 1069 ◽  
Author(s):  
Leon Tolbert ◽  
Hui Zhang ◽  
Burak Ozpineci ◽  
Madhu S. Chinthavali
Keyword(s):  
Research Effort ◽  
National Laboratory ◽  
Switching Frequency ◽  
Passive Components ◽  
University Of Tennessee ◽  
Medium Voltage ◽  
Oak Ridge ◽  
High Switching Frequency ◽  
Higher Power ◽  
The University

ABSTRACTThe advantages that silicon carbide (SiC) based power electronic devices offer are being realized by using prototype or experimental devices in many different power applications ranging from medium voltage to high voltage or for high temperature or high switching frequency applications. The main advantages of using SiC-based devices are reduced thermal management requirements and smaller passive components which result in higher power density. An overview of the SiC research effort at Oak Ridge National Laboratory (ORNL) and The University of Tennessee (UT) is presented in this paper.

Where Do the Leads for Licences Come From?

2000 ◽  
Vol 14 (3) ◽  
pp. 150-156 ◽  
Author(s):  
Christina Jansen ◽  
Harrison F. Dillon
Keyword(s):  
National Laboratory ◽  
Massachusetts Institute ◽  
Massachusetts Institute Of Technology ◽  
University Of Florida ◽  
Oak Ridge ◽  
University Of Utah ◽  
Technology Transfer Offices ◽  
Oregon Health ◽  
Institute Of Technology ◽  
The University

Knowing where licence and option leads come from can optimize the productivity in university technology transfer offices. This article presents the sources of over 1,100 leads for licences and options from six different institutions: the University of Florida; the Massachusetts Institute of Technology; Oak Ridge National Laboratory; the Oregon Health Sciences University; Tulane University; and the University of Utah. Data from each of the six offices confirm the authors' suspicions that the majority of the leads come from inventors. The methodology used to gather the data is also described.

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