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CoolCab Truck Testing Project Update

Description: Presentation describes the CoolCab project, a DOE/NREL initiative to design efficient thermal management systems in heavy trucks to eliminate idling and reduce petroleum consumption.
Date: October 31, 2007
Creator: Proc, K.
Partner: UNT Libraries Government Documents Department

Solar Resource Characterization; Session: Modeling and Analysis

Description: This project supports the Solar America Initiative by: (1) meeting increasing demands for expertise in and products on solar radiation data and models--production and distribution of reliable, accurate domestic and international solar resource data, benchmarking and cross-comparison of solar irradiance models; and coordination with the international community (IEA/SHC Task 36, WMO); (2) reducing data uncertainties and increasing temporal and spatial data resolutions; (3) developing and testing … more
Date: April 1, 2008
Creator: Renne, D.
Partner: UNT Libraries Government Documents Department

Module Encapsulation Materials, Processing and Testing

Description: Study of PV module encapsulation materials, processing, and testing shows that overall module reliability is determined by all component materials and processing factors.
Date: December 1, 2008
Creator: Pern, J.
Partner: UNT Libraries Government Documents Department

Active Power Control Testing at the U.S. National Wind Technology Center (NWTC)

Description: In order to keep the electricity grid stable and the lights on, the power system relies on certain responses from its generating fleet. This presentation evaluates the potential for wind turbines and wind power plants to provide these services and assist the grid during critical times.
Date: January 1, 2011
Creator: Ela, E.
Partner: UNT Libraries Government Documents Department

Gearbox Reliability Collaborative - Phase 1 and 2 Overview

Description: The presentation given at the Wind Turbine Reliability Workshop at Sandia National Laboratories, August 2-3, 2011, serves as an overview for the findings from the Gearbox Reliability Collaborative Project Report: Findings from Phase 1 and Phase 2 Testing
Date: August 1, 2011
Creator: Link, H.
Partner: UNT Libraries Government Documents Department

MD PHEV/EV ARRA Project Data Collection and Reporting

Description: This presentation describes a National Renewable Energy Laboratory project to collect and analyze commercial fleet deployment data from medium-duty plug-in hybrid electric and all-electric vehicles that were deployed using funds from the American Recovery and Reinvestment Act. This work supports the Department of Energy's Vehicle Technologies Program and its Advanced Vehicle Testing Activity.
Date: January 1, 2012
Creator: Walkowicz, K.; Ramroth, L.; Duran, A. & Rosen, B.
Partner: UNT Libraries Government Documents Department

NREL/CCSE PEV Battery Second Use Project

Description: This presentation describes the Battery Second Use Project. Preliminary analysis results show (1) the impact of competing technologies, (2) potential revenue generation, and (3) supply and demand of the second use of plug-in electric vehicle batteries. The impact of competing technologies are: maximum salve value of a used battery will be limited by future battery prices, under favorable conditions, second use can only discount today's battery prices by 12% or less, however, second use will off… more
Date: September 1, 2011
Creator: Neubauer, J. & Pesaran, A.
Partner: UNT Libraries Government Documents Department

Accelerated Testing and On-Sun Failure of CPV Die-Attach

Description: Accelerated Testing and On-Sun Failure of CPV Die-attach. Presentation on CPV accelerated reliability testing.
Date: October 1, 2010
Creator: Bosco, N.; Kurtz, S. & Stokes, A.
Partner: UNT Libraries Government Documents Department

Gearbox Reliability Collaborative Update

Description: Understand and isolate sources of gearbox failures; Improve understanding of internal loads and response; Normal operation and transients; Improve analysis tools to accurately simulate response; Improve ability to reproduce field response in dyno testing; Evaluate how CM augments design and O and M.
Date: April 1, 2012
Creator: Keller, J.; McDade, M.; LaCava, W.; Guo, Y. & Sheng, S.
Partner: UNT Libraries Government Documents Department

Lifetime Prediction for Degradation of Solar Mirrors using Step-Stress Accelerated Testing

Description: This research is to illustrate the use of statistical inference techniques in order to quantify the uncertainty surrounding reliability estimates in a step-stress accelerated degradation testing (SSADT) scenario. SSADT can be used when a researcher is faced with a resource-constrained environment, e.g., limits on chamber time or on the number of units to test. We apply the SSADT methodology to a degradation experiment involving concentrated solar power (CSP) mirrors and compare the results to a… more
Date: September 1, 2011
Creator: Lee, J.; Elmore, R.; Kennedy, C.; Gray, M. & Jones, W.
Partner: UNT Libraries Government Documents Department

NREL & DOE Activities: Update

Description: Describes results to date of NREL's real-world fleet testing of medium- and heavy-duty hybrid vehicles.
Date: October 28, 2009
Creator: Walkowicz, K.
Partner: UNT Libraries Government Documents Department

Comparison of Accelerated Testing with Modeling to Predict Lifetime of CPV Solder Layers

Description: Concentrating photovoltaic (CPV) cell assemblies can fail due to thermomechanical fatigue in the die-attach layer. In this presentation, we show the latest results from our computational model of thermomechanical fatigue. The model is used to estimate the relative lifetime of cell assemblies exposed to various temperature histories consistent with service and with accelerated testing. We also present early results from thermal cycling experiments designed to help validate the computational mode… more
Date: March 1, 2012
Creator: Silverman, T. J.; Bosco, N. & Kurtz, S.
Partner: UNT Libraries Government Documents Department

Hybrid Vehicle Comparison Testing Using Ultracapacitor vs. Battery Energy Storage

Description: With support from General Motors, NREL researchers converted and tested a hybrid electric vehicle (HEV) with three energy storage configurations: a nickel metal-hydride battery and two ultracapacitor (Ucap) modules. They found that the HEV equipped with one Ucap module performed as well as or better than the HEV with a stock NiMH battery configuration. Thus, Ucaps could increase the market penetration and fuel savings of HEVs.
Date: February 1, 2010
Creator: Gonder, J.; Pesaran, A.; Lustbader, J. & Tataria, H.
Partner: UNT Libraries Government Documents Department

Accelerating Fatigue Testing for Cu Ribbon Interconnects

Description: This presentation describes fatigue experiments and discusses dynamic mechanical loading for Cu ribbon interconnects.
Date: May 1, 2013
Creator: Bosco, N.; Silverman, T.; Wohlgemuth , J.; Kurtz, S.; Inoue, M.; Sakurai, K. et al.
Partner: UNT Libraries Government Documents Department

Building Energy Simulation Test for Existing Homes (BESTEST-EX)

Description: This presentation discusses the goals of NREL Analysis Accuracy R&D; BESTEST-EX goals; what BESTEST-EX is; how it works; 'Building Physics' cases; 'Building Physics' reference results; 'utility bill calibration' cases; limitations and potential future work. Goals of NREL Analysis Accuracy R&D are: (1) Provide industry with the tools and technical information needed to improve the accuracy and consistency of analysis methods; (2) Reduce the risks associated with purchasing, financing, an… more
Date: December 1, 2011
Creator: Judkoff, R.; Neymark, J. & Polly, B.
Partner: UNT Libraries Government Documents Department

Testing Protocol for Module Encapsulant Creep

Description: Recently there has been an interest in the use of thermoplastic encapsulant materials in photovoltaic modules to replace chemically crosslinked materials, e.g., ethylene-vinyl acetate. The related motivations include the desire to: reduce lamination time or temperature; use less moisture-permeable materials; or use materials with better corrosion characteristics. However, the use of any thermoplastic material in a high-temperature environment raises safety and performance concerns, as the stand… more
Date: February 1, 2012
Creator: Kempe, M. D.; Miller, D. C.; Wohlgemuth, J. H.; Kurtz, S. R.; Moseley, J. M.; Shah, Q. et al.
Partner: UNT Libraries Government Documents Department
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