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in creator/contributor: "Lawrence Berkeley National Laboratory. Environmental Energy Technologies Division."  
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Ferromagnetism in GaN: Gd: A density functional theory study

Description: First principle calculations of the electronic structure and magnetic interaction of GaN:Gd have been performed within the Generalized Gradient Approximation (GGA) of the density functional theory (DFT) with the on-site Coulomb energy U taken into account (also referred to as GGA+U). The ferromagnetic p-d coupling is found to be over two orders of magnitude larger than the s-d exchange coupling. The experimental colossal magnetic moments and room temperature ferromagnetism in GaN:Gd reported re… more
Date: February 4, 2008
Creator: Stevenson, Cynthia & Stevenson, Cynthia
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Improving Ventilation and Saving Energy: Final Report on Indoor Environmental Quality and Energy Monitoring in Sixteen Relocatable Classrooms

Description: An improved HVAC system for portable classrooms was specified to address key problems in existing units. These included low energy efficiency, poor control of and provision for adequate ventilation, and excessive acoustic noise. Working with industry, a prototype improved heat pump air conditioner was developed to meet the specification. A one-year measurement-intensive field-test of ten of these IHPAC systems was conducted in occupied classrooms in two distinct California climates. These measu… more
Date: April 4, 2008
Creator: Apte, Michael G.; Norman, Bourassa; Faulkner, David; Hodgson, Alfred T.; Hotchi, Toshfumi; Spears, Michael et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

ALDEHYDE AND OTHER VOLATILE ORGANIC CHEMICAL EMISSIONS IN FOUR FEMA TEMPORARY HOUSING UNITS ? FINAL REPORT

Description: Four unoccupied FEMA temporary housing units (THUs) were studied to assess their indoor emissions of volatile organic compounds including formaldehyde. Measurement of whole-THU VOC and aldehyde emission factors (mu g h-1 per m2 of floor area) for each of the four THUs were made at FEMA's Purvis MS staging yard using a mass balance approach. Measurements were made in the morning, and again in the afternoon in each THU. Steady-state indoor formaldehyde concentrations ranged from 378 mu g m-3 (0.3… more
Date: May 4, 2008
Creator: Salazar, Olivia; Maddalena, Randy L.; Russell, Marion; Sullivan, Douglas P. & Apte, Michael G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

National Energy Efficiency Evaluation, Measurement and Verification (EM&V) Standard: Scoping Study of Issues and Implementation Requirements

Description: This report is a scoping study that identifies issues associated with developing a national evaluation, measurement and verification (EM&V) standard for end-use, non-transportation, energy efficiency activities. The objectives of this study are to identify the scope of such a standard and define EM&V requirements and issues that will need to be addressed in a standard. To explore these issues, we provide and discuss: (1) a set of definitions applicable to an EM&V standard; (2) a literature revi… more
Date: February 4, 2011
Creator: Schiller Consulting, Inc.; Schiller, Steven R.; Goldman, Charles A. & Galawish, Elsia
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Accelerating the Payment of PACE Assessments By Mark Zimring and Merrian Fulle

Description: The 'acceleration' of land-secured assessments allows municipalities to declare the entire value (not just the late payments) of a property owner's outstanding balance payable if a default occurs. State laws vary on whether acceleration is required, permitted, or prohibited. Acceleration can be attractive to bond investors because it strips out non-performing assessments, and may avoid delays in debt service payments to investors. The risk that non-acceleration will negatively impact bond inves… more
Date: May 4, 2010
Creator: Zimring, Mark & Fuller, Merrian
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Financial Analysis of Incentive Mechanisms to Promote Energy Efficiency: Case Study of a Prototypical Southwest Utility

Description: Many state regulatory commissions and policymakers want utilities to aggressively pursue energy efficiency as a strategy to mitigate demand and energy growth, diversify the resource mix, and provide an alternative to building new, costly generation. However, as the National Action Plan for Energy Efficiency (NAPEE 2007) points out, many utilities continue to shy away from aggressively expanding their energy efficiency efforts when their shareholder's fundamental financial interests are placed a… more
Date: March 4, 2009
Creator: Cappers, Peter; Goldman, Charles; Chait, Michele; Edgar, George; Schlegel, Jeff & Shirley, Wayne
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Simulating a Nationally Representative Housing Sample Using EnergyPlus

Description: This report presents a new simulation tool under development at Lawrence Berkeley National Laboratory (LBNL). This tool uses EnergyPlus to simulate each single-family home in the Residential Energy Consumption Survey (RECS), and generates a calibrated, nationally representative set of simulated homes whose energy use is statistically indistinguishable from the energy use of the single-family homes in the RECS sample. This research builds upon earlier work by Ritchard et al. for the Gas Research… more
Date: March 4, 2011
Creator: Hopkins, Asa S.; Lekov, Alex; Lutz, James; Rosenquist, Gregory & Gu, Lixing
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Opportunities to change development pathways toward lower greenhouse gas emissions through energy efficiency

Description: There is a multiplicity of development pathways in which low energy sector emissions are not necessarily associated with low economic growth. However, changes in development pathways can rarely be imposed from the top. On this basis, examples of energy efficiency opportunities to change development pathways toward lower emissions are presented in this paper. We review opportunities at the sectoral and macro level. The potential for action on nonclimate policies that influence energy use and emi… more
Date: July 4, 2008
Creator: Alterra, Swart; Masanet, Eric; Lecocq, Franck; Najam, Adil; Schaeffer, Robert; Winkler, Harald et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Overcharge Protection for 4 V Lithium Batteries at High Rates and Low Temperature

Description: Overcharge protection for 4 V Li{sub 1.05}Mn{sub 1.95}O{sub 4}/lithium cells at charging rates in excess of 1 mA/cm{sup 2} (3C) and at temperatures as low as -20 C was achieved using a bilayer separator coated with two electroactive polymers. High rate and low temperature overcharge protection and discharge performance were improved by employing a design in which the polymer-coated portion of the separator is in parallel with the cell rather than between the electrodes. The effects of different… more
Date: January 4, 2010
Creator: Chen, Guoying & Richardson, Thomas J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Thermostat Interface and Usability: A Survey

Description: This report investigates the history of thermostats to better understand the context and legacy regarding the development of this important tool, as well as thermostats' relationships to heating, cooling, and other environmental controls. We analyze the architecture, interfaces, and modes of interaction used by different types of thermostats. For over sixty years, home thermostats have translated occupants' temperature preferences into heating and cooling system operations. In this position of … more
Date: September 4, 2010
Creator: Meier, Alan; Peffer, Therese; Pritoni, Marco & Aragon, Cecilia
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Drifting localization of ionization runaway: Unraveling the nature of anomalous transport in high power impulse magnetron sputtering

Description: The plasma over the magnetron’s erosion “racetrack” is not azimuthally uniform but concentrated in distinct dense plasma zones which move in the {vector E}×{vector B} direction with about 10% of the electrons’ {vector E}×{vector B}/B{sup 2} drift velocity. The plasma zones are investigated with a gated camera working in concert with a streak camera for Al, Nb, Cu, and W targets in Ar or Kr background gas. It is found that each plasma zone has a high density edge which is the origin of a plasma-… more
Date: December 4, 2011
Creator: Ni, Pavel & Rauch, Albert
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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