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Buildings & Construction

Energy efficiency

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Displaying 201 - 225 of 297

Evolution of electrochemical interfaces in solid oxide fuel cells (SOFC): a Ni and Zr resonant anomalous ultra-small-angle X-ray scattering studywith elemental and spatial resolution across the cell assembly

June 1, 2014
Author(s)
Andrew J. Allen, Jan Ilavsky, Pete R. Jemian, Artur Braun
Electrochemical interfaces are key to the direct conversion of fuels to electrical energy and lend energy converters like solid oxide fuel cells (SOFC) their functionality. Over extended operation at high temperatures, the microstructure of the underlying

Large-area irradiance-mode spectral response measurements of solar cells by a light-emitting-diode- based integrating sphere source

May 30, 2014
Author(s)
Behrang H. Hamadani, John F. Roller, Andrew M. Shore, Brian P. Dougherty, Howard W. Yoon
An irradiance-mode absolute differential spectral response measurement system based on a light emitting diode (LED) array is described. The LEDs are coupled to an integrating sphere whose output irradiance is uniform to better than 2 % over an area of 160

Residential Home Performance Contracting Round Robin Guidelines

April 17, 2014
Author(s)
Michael Lubliner, Rick Kunkle, David Hales, Melinda Spencer
These guidelines describe the important considerations for planning, conducting, analyzing, and disseminating the results of a Home Performance Contactor (HPC) round robin study of a specific aspect of the HPC industry services. The round robin study

Power Supply Issues for Wireless Sensor Networks: A Review

March 1, 2014
Author(s)
Wenqi Guo, William M. Healy, Mengchu Zhou
Wireless sensor networks (WSNs) have enabled numerous embedded wireless applications in different areas such as military/battlefield, environmental monitoring, and intelligent building systems. They consist of a large number of nodes that need to operate

Evaluating Feedback Systems for Residential Building Energy Monitoring

August 10, 2013
Author(s)
Wenqi Guo, Tania Ullah, MengChu Zhou
Rising global energy demand, increasing electricity prices, and the limitation of natural resources have led to increased interest in energy monitoring of residential buildings. Much research has been done to examine the effect of energy use feedback to

Energy Price Indices and Discount Factors for Life-Cycle Cost Analysis - 2013

July 15, 2013
Author(s)
Amy S. Rushing, Joshua D. Kneifel, Barbara C. Lippiatt
This is the 2013 edition of energy price indices and discount factors for performing life-cycle cost analyses of energy and water conservation and renewable energy projects in federal facilities. It will be effective from April 1, 2013 to March 31, 2014

On the Field Evaporation Behavior of c-axis GaN Nanowires in Laser-Pulsed Atom Probe Tomography

June 26, 2013
Author(s)
Matthew D. Brubaker, Kristine A. Bertness, Norman A. Sanford, Brian Gorman, David R. Diercks, R Kirchofer
GaN has seen use in many applications such as photovoltaics, blue and ultraviolet lasers, and light-emitting diodes with additional research into expanded and new applications. GaN in the form of nanowires present additional possibilities due to their high
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