Analysis

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CRF Researchers Are Source for 2015 QTR Sidebar Content

On September 10th, Energy Secretary Ernest Moniz released the second Quadrennial Technology Review (QTR 2015), which examines the most promising research, development, demonstration, and deployment (RDD&D) opportunities across energy technologies to effectively address the nation’s energy needs. Specifically, this analysis identifies the important technology RDD&D opportunities across energy supply and end-use in working toward a [...]

Sandia Research Aims to Enhance Understanding of Radiometric Instruments

Sandia and Photovoltaic Performance Labs, Inc. have partnered on the PVSENSOR project to measure, characterize, and understand modern radiometric instrument intricacies. Such instruments are used to measure the amount of sunlight impinging on a plane and are primarily used as reference devices for PV systems. Two identical sets of 21 radiometers are mounted on the [...]

Stion Commissions PV System at Sandia Regional Test Center

Stion PV system installed and the Sandia RTC site. Thin-film solar module manufacturer Stion has commissioned a 12 kW fixed latitude ground-mounted photovoltaic (PV) system at the DOE’s New Mexico Regional Test Center (RTC), located at Sandia. The system will be monitored and tested to collect a range of data related to the [...]

Sandia Wake-Imaging System Successfully Deployed at Scaled Wind Farm Technology Facility

The Sandia Wake-Imaging System (SWIS) was deployed for a full-scale field demonstration at the Sandia Scaled Wind Farm Technology (SWiFT) facility in Lubbock, Texas, in July. This successful field demonstration was a culmination of over 3 years of technical development; more than a year of safety, environmental, and regulatory approvals; and the efforts of 20 [...]

Sandia Rooftop PV Structural Report Webinar

A roof structure is made stronger by the system elements working together—much stronger than its main load-bearing element, the rafter, is alone. Current engineering analysis methods do not take this composite action into account when evaluating rooftop strength. Results from the Sandia research reports, “Structural Code Considerations of Solar Rooftop Installations” and “Empirically [...]

Sandia Develops Phased-Array Sources Based on Nonlinear Metamaterial Nanocavities

The SH-generating quantum well layer (pink) and the beam-shaping split-ring metamaterial resonators (the “C”-shaped structures). The phase-coherent emission from individual resonators opens the door for many beam-shaping applications, some of which are presented in the insets. Each device type can be achieved via proper design of individual metamaterial resonators and their arrangement on the [...]

Phononic Crystals: Engineering the Flow of Heat

A Sandia-led research team† has, for the first time, observed the coherent propagation of thermal phonons‡ in silicon at room temperature—in two-dimensional phononic crystals formed by introducing air holes in a silicon matrix with minimum feature sizes ~250 nm. To separate incoherent from coherent boundary scattering, the team fabricated phononic crystals with a fixed minimum feature [...]

Government-Industry Radar/Airspace Listening Session at WindPower2015

Representatives from the federal agencies participating in the Wind Turbine Radar Interference Mitigation (WTRIM) Working Group held a special Government-Industry Radar/Airspace Listening Session at the American Wind Energy Association AWEA WindPower 2015 event in Orlando, Florida. The event was well attended by more than 50 persons (other than the panel members). The panel consisted of [...]

Sandian Contributes to Western Electricity Coordinating Council Photovoltaic Power Plant Model Validation Guideline

Utility-scale PV systems connected to the transmission network must comply with NERC modeling, data, and analysis standards. WECC’s new “Central Station Photovoltaic Power Plant Model Validation Guideline” helps them with this requirement. (Photo credit: Ceinturion, Creative Commons 3.0) As part of the Western Electricity Coordinating Council’s (WECC’s) Modeling and Validation Work Group, Sandia [...]

Upcoming Release of the University of Minnesota’s Virtual Wind Simulator

Large-eddy simulation (LES) of wind farms with wind-turbine parameterization is emerging as a powerful tool for improving existing wind farm performance and lowering maintenance costs—and assessing the potential sites for installing wind farms. Sandia is working with the University of Minnesota (UMN) St. Anthony Falls Laboratory to document and prepare UMN’s offshore version of the [...]