Low-Cost Hydrogen Distributed Production System Development (open access)

Low-Cost Hydrogen Distributed Production System Development

H{sub 2}Gen, with the support of the Department of Energy, successfully designed, built and field-tested two steam methane reformers with 578 kg/day capacity, which has now become a standard commercial product serving customers in the specialty metals and PV manufacturing businesses. We demonstrated that this reformer/PSA system, when combined with compression, storage and dispensing (CSD) equipment could produce hydrogen that is already cost-competitive with gasoline per mile driven in a conventional (non-hybrid) vehicle. We further showed that mass producing this 578 kg/day system in quantities of just 100 units would reduce hydrogen cost per mile approximately 13% below the cost of untaxed gasoline per mile used in a hybrid electric vehicle. If mass produced in quantities of 500 units, hydrogen cost per mile in a FCEV would be 20% below the cost of untaxed gasoline in an HEV in the 2015-2020 time period using EIA fuel cost projections for natural gas and untaxed gasoline, and 45% below the cost of untaxed gasoline in a conventional car. This 20% to 45% reduction in fuel cost per mile would accrue even though hydrogen from this 578 kg/day system would cost approximately $4.14/kg, well above the DOE hydrogen cost targets of $2.50/kg by …
Date: March 10, 2011
Creator: C.E. (Sandy) Thomas, Ph.D., President Franklin D. Lomax, Ph.D, CTO & Principal Investigator, and Maxim Lyubovski, Ph.D.
Object Type: Report
System: The UNT Digital Library
Final Technical Report for DUSEL Research and Development on Sub-Kelvin Germanium Detectors for Ton Scale Dark Matter Search (open access)

Final Technical Report for DUSEL Research and Development on Sub-Kelvin Germanium Detectors for Ton Scale Dark Matter Search

We have supported one graduate student and a small percentage of fabrication staff on $135k per year for three years plus one no cost extension year on this DUSEL R&D grant.  There were three themes within our research program: (1) how to improve the radial sensitivity for single sided phonon readout with four equal area sensors of which three form a central circle and fourth a surrounding ring; (2) how to instrument double sided phonon readouts which will give us better surface event rejection and increased fiducial volume for future CDMS style detectors; and (3) can we manufacture much larger Ge detectors using six inch diameter material which is not suitable for standard gamma ray spectroscopy.
Date: September 10, 2012
Creator: Cabrera, Prof. Blas
Object Type: Report
System: The UNT Digital Library
Theory of Microwave Instability and Coherent Synchrotron Radiation in Electron Storage Rings (open access)

Theory of Microwave Instability and Coherent Synchrotron Radiation in Electron Storage Rings

None
Date: December 10, 2012
Creator: Cai, Y
Object Type: Article
System: The UNT Digital Library
Improving Irrigation Water Use Estimates with Remote Sensing Technologies: A Feasibility Study for Texas (open access)

Improving Irrigation Water Use Estimates with Remote Sensing Technologies: A Feasibility Study for Texas

Identifies the remote sensing and modelling technologies capable of estimating ET and PPT with the end goal of improving NIWR across Texas.
Date: May 10, 2017
Creator: Caldwell, Todd; Huntington, Justin; Scanlon, Bridget; Joros, Andrew & Howard, Teresa
Object Type: Report
System: The Portal to Texas History
Cybersecurity Issues for the Bulk Power System (open access)

Cybersecurity Issues for the Bulk Power System

This report provides information about the Cybersecurity Issues for the Bulk Power System . The cybersecurity of the electricity grid has been a focus of recent efforts to protect the integrity of the electric power system.
Date: June 10, 2015
Creator: Campbell, Richard J.
Object Type: Report
System: The UNT Digital Library
The Smart Grid: Status and Outlook (open access)

The Smart Grid: Status and Outlook

This report discusses the effort to build a "smart" electricity grid across the the U.S. which can be run with digital technologies that control most of the major functions of a power plant. The current state of the movement and concerns regarding cyber-security are also discussed.
Date: April 10, 2018
Creator: Campbell, Richard J.
Object Type: Report
System: The UNT Digital Library
Volkswagen, Defeat Devices, and the Clean Air Act: Frequently Asked Questions (open access)

Volkswagen, Defeat Devices, and the Clean Air Act: Frequently Asked Questions

This report provides answers to a series of frequently asked questions focusing on a description of modern diesel technologies, their market and emissions profiles, and some potential reasons that could underlie the use of defeat devices. It summarizes the specific allegations filed against VW under the Clean Air Act, the current status of federal and state investigations, and the potential civil and criminal penalties. Further, the report introduces several outstanding issues currently under debate regarding the Environmental Protection Agency's (EPA's) resources and activities, and issues surrounding VW's defeat device.
Date: February 10, 2016
Creator: Canis, Bill; Lattanzio, Richard K.; Vann, Adam & Yacobucci, Brent D.
Object Type: Report
System: The UNT Digital Library
General Motors' Initial Public Offering: Review of Issues and Implications for TARP (open access)

General Motors' Initial Public Offering: Review of Issues and Implications for TARP

This report analyzes the progress General Motors Company has made since it was created from the sale of the bankrupt Old GM in July 2009 and the major issues related to its anticipated 2010 initial public offering (IPO).
Date: November 10, 2010
Creator: Canis, Bill; Webel, Baird & Shorter, Gary
Object Type: Report
System: The UNT Digital Library
Comparison of Gas Puff Imaging Data in NSTX with the DEGAS 2 Simulation (open access)

Comparison of Gas Puff Imaging Data in NSTX with the DEGAS 2 Simulation

Gas-Pu -Imaging (GPI) is a two dimensional diagnostic which measures the edge Dα light emission from a neutral Dα gas puff near the outer mid- plane of the National Spherical Torus Experiment (NSTX). DEGAS 2 is a 3-D Monte Carlo code used to model neutral transport and plasma-neutral interactions in fusion plasmas. In this paper, we compare the measured and modeled Dα light emission for speci c NSTX experiments. Both the simulated spatial distribution and radiance of the Dα light emission agree well with the experimental data obtained between Edge Localized Modes (ELMs) in ELMy H-modes.
Date: April 10, 2013
Creator: Cao, B.; Stotler, D. P.; Zweben, S. J.; Bell, M.; Diallo, A. & LeBlanc, B.
Object Type: Report
System: The UNT Digital Library
Mass Market Demand Response and Variable Generation Integration Issues: A Scoping Study (open access)

Mass Market Demand Response and Variable Generation Integration Issues: A Scoping Study

This scoping study focuses on the policy issues inherent in the claims made by some Smart Grid proponents that the demand response potential of mass market customers which is enabled by widespread implementation of Advanced Metering Infrastructure (AMI) through the Smart Grid could be the “silver bullet” for mitigating variable generation integration issues. In terms of approach, we will: identify key issues associated with integrating large amounts of variable generation into the bulk power system; identify demand response opportunities made more readily available to mass market customers through widespread deployment of AMI systems and how they can affect the bulk power system; assess the extent to which these mass market Demand Response (DR) opportunities can mitigate Variable Generation (VG) integration issues in the near-term and what electricity market structures and regulatory practices could be changed to further expand the ability for DR to mitigate VG integration issues over the long term; and provide a qualitative comparison of DR and other approaches to mitigate VG integration issues.
Date: September 10, 2011
Creator: Cappers, Peter; Mills, Andrew; Goldman, Charles; Wiser, Ryan & Eto, Joseph H.
Object Type: Report
System: The UNT Digital Library
OMB and Treasury Disagree over Process for Issuing New Tax Rules (open access)

OMB and Treasury Disagree over Process for Issuing New Tax Rules

This report discusses the disagreement between the U.S. Office of Management and Budget (OMB) and the Treasury Department on how to issue new tax regulations. It discusses the historical roots and nature of the disagreement and potential implications.
Date: April 10, 2018
Creator: Carey, Maeve P.
Object Type: Report
System: The UNT Digital Library
Compliance Monitoring of Underwater Blasting for Rock Removal at Warrior Point, Columbia River Channel Improvement Project, 2009/2010 (open access)

Compliance Monitoring of Underwater Blasting for Rock Removal at Warrior Point, Columbia River Channel Improvement Project, 2009/2010

The U.S. Army Corps of Engineers, Portland District (USACE) conducted the 20-year Columbia River Channel Improvement Project (CRCIP) to deepen the navigation channel between Portland, Oregon, and the Pacific Ocean to allow transit of fully loaded Panamax ships (100 ft wide, 600 to 700 ft long, and draft 45 to 50 ft). In the vicinity of Warrior Point, between river miles (RM) 87 and 88 near St. Helens, Oregon, the USACE conducted underwater blasting and dredging to remove 300,000 yd3 of a basalt rock formation to reach a depth of 44 ft in the Columbia River navigation channel. The purpose of this report is to document methods and results of the compliance monitoring study for the blasting project at Warrior Point in the Columbia River.
Date: May 10, 2011
Creator: Carlson, Thomas J.; Johnson, Gary E.; Woodley, Christa M.; Skalski, J. R. & Seaburg, Adam
Object Type: Report
System: The UNT Digital Library
DnUp Routing Algorithm Description (open access)

DnUp Routing Algorithm Description

A brief description of the DnUp Infiniband Routing Algorithm.
Date: February 10, 2011
Creator: Carr, Jared F. & Schmidt, Kenneth P.
Object Type: Report
System: The UNT Digital Library
Precise Higgs-background Predictions: Merging NLO QCD and Squared Quark-loop Corrections to Four-lepton + 0,1 Jet Production (open access)

Precise Higgs-background Predictions: Merging NLO QCD and Squared Quark-loop Corrections to Four-lepton + 0,1 Jet Production

None
Date: September 10, 2013
Creator: Cascioli, Fabio; Hoeche, Stefan; Krauss, Frank; Maierhofer, Philipp; Pozzorini, Stefano & Siegert, Frank
Object Type: Article
System: The UNT Digital Library
Waste feed delivery planning at Hanford (open access)

Waste feed delivery planning at Hanford

The Integrated Waste Feed Delivery Plan (IWFDP) describes how waste feed will be delivered to the Waste Treatment and Immobilization Plant (WTP) to safely and efficiently accomplish the River Protection Project (RPP) mission. The IWFDP, which is integrated with the Baseline Case operating scenario, is comprised of three volumes. Volume 1 - Process Strategy provides an overview of waste feed delivery (WFD) and describes how the WFD system will be used to prepare and deliver feed to the WTP based on the equipment configuration and functional capabilities of the WFD system. Volume 2 - Campaign Plan describes the plans for the first eight campaigns for delivery to the WTP, evaluates projected feed for systematic issues, projects 242-A Evaporator campaigns, and evaluates double-shell tank (DST) space and availability of contingency feed. Volume 3 - Project Plan identifies the scope and timing of the DST and infrastructure upgrade projects necessary to feed the WTP, and coordinates over 30 projectized projects and operational activities that comprise the needed WFD upgrades.
Date: January 10, 2013
Creator: Certa, Paul J.; West, Elizha B.; Rodriguez, Juissepp S.; Hohl, Ted M.; Larsen, Douglas C.; Ritari, Jaakob S. et al.
Object Type: Article
System: The UNT Digital Library
SPS Wideband Transverse Feedback Kicker: Design Report (open access)

SPS Wideband Transverse Feedback Kicker: Design Report

None
Date: September 10, 2013
Creator: Cesaratto, J.M.; Fox, J.D.; Rivetta, C.H.; /SLAC; Alesini, D.; Drago, A. et al.
Object Type: Article
System: The UNT Digital Library
Multiband Charge-Coupled Device (open access)

Multiband Charge-Coupled Device

None
Date: February 10, 2014
Creator: Chang, Chu-En; Segal, Julie D.; Roodman, Aaron J.; Howe, Roger T. & Kenney, Christopher J.
Object Type: Article
System: The UNT Digital Library
North Korea: U.S. Relations, Nuclear Diplomacy, and Internal Situation (open access)

North Korea: U.S. Relations, Nuclear Diplomacy, and Internal Situation

Although the primary focus of U.S. policy toward North Korea is the nuclear weapons program, there are a host of other issues, which this report explores through an overview of the U.S.-North Korea relationship, including an emphasis on the diplomacy of the Six-Party Talks. Please refer to the list at the end of this report for the full list of CRS reports focusing on other North Korean issues.
Date: November 10, 2010
Creator: Chanlett-Avery, Emma & Taylor, Mi Ae
Object Type: Report
System: The UNT Digital Library
Consistency Test of Dark Energy Models (open access)

Consistency Test of Dark Energy Models

None
Date: July 10, 2013
Creator: Chen, Chien-Wen.; /Taiwan, Natl. Taiwan U.; Gu, Je-An.; /Taiwan, Natl. Taiwan U.; Chen, Pisin. & /KIPAC, Menlo Park /Taiwan, Natl. Taiwan U. /Taipei, Inst. Astron. Astrophys.
Object Type: Article
System: The UNT Digital Library
Constraints on the Phase Plane of the Dark Energy Equation of State (open access)

Constraints on the Phase Plane of the Dark Energy Equation of State

None
Date: July 10, 2013
Creator: Chen, Chien-Wen; /Taiwan, Natl. Normal U.; Chen, Pisin; /Taiwan, Natl. Normal U. /KIPAC, Menlo Park; Gu, Je-An & /Taiwan, Natl. Normal U.
Object Type: Article
System: The UNT Digital Library
BWR Anticipated Transients Without Scram Leading to Emergency Depressurization (open access)

BWR Anticipated Transients Without Scram Leading to Emergency Depressurization

Determines the effectiveness of automatic and operator actions of Anticipated transients without scram (ATWS).
Date: November 10, 2013
Creator: Cheng, Lap-Yan; Baek, Joo-Seok; Cuadra, Arantxa; Aronson, Arnold; Diamond, David & Yarsky, Peter
Object Type: Article
System: The UNT Digital Library
BWR Anticipated Transients Without Scram Leading to Instability (open access)

BWR Anticipated Transients Without Scram Leading to Instability

Anticipated transients without scram (ATWS) in aboiling water reactor (BWR) were simulated in order to understand reactor response and determine the effectiveness of automatic and operator actions to mitigate this beyond-design-basis accident. The events of interest herein are initiated by a turbine trip when the reactor is operating in the expanded operating domainMELLLA+ [maximum extended load line limit plus]. In these events the reactor may initially be at up to 120% of the original licensed thermal power (OLTP) and at flow rates as low as 80% of rated.For these (and similar) ATWS events the concern isthat when the reactor power decreases in response to a dual recirculation pump trip, the core will become unstable and large amplitude oscillations will begin. The occurrence of these power oscillations, if left unmitigated, may result in fuel damage, and the amplitude of the poweroscillations may hamper the effectiveness of the injection of dissolved neutron absorber through the standby liquid control system (SLCS).
Date: November 10, 2013
Creator: Cheng, Lap-Yan; Baek, Joo-Seok; Cuadra, Arantxa; Aronson, Arnold; Diamond, David & Yarsky, Peter
Object Type: Article
System: The UNT Digital Library
TRACE Model for Simulation of Anticipated Transients Without Scram in a BWR (open access)

TRACE Model for Simulation of Anticipated Transients Without Scram in a BWR

A TRACE model has been developed for using theTRACE/PARCS computational package [1, 2] to simulate anticipated transients without scram (ATWS) events in a boiling water reactor (BWR). The model represents a BWR/5 housed in a Mark II containment. The reactor and the balance of plant systems are modeled in sufficient detail to enable the evaluation of plant responses and theeffectiveness of automatic and operator actions tomitigate this beyond design basis accident.The TRACE model implements features thatfacilitate the simulation of ATWS events initiated by turbine trip and closure of the main steam isolation valves (MSIV). It also incorporates control logic to initiate actions to mitigate the ATWS events, such as water levelcontrol, emergency depressurization, and injection of boron via the standby liquid control system (SLCS). Two different approaches have been used to model boron mixing in the lower plenum of the reactor vessel: modulate coolant flow in the lower plenum by a flow valve, and use control logic to modular.
Date: November 10, 2013
Creator: Cheng, Lap-Yan; Baek,Joo-Seok; Cuadra,Arantxa; Aronson, Arnold; Diamond, David & Yarsky, Peter
Object Type: Article
System: The UNT Digital Library
Afghanistan Casualties: Military Forces and Civilians (open access)

Afghanistan Casualties: Military Forces and Civilians

This report collects statistics from a variety of sources on casualties sustained during Operation Enduring Freedom (OEF), which began on October 7, 2001, and is ongoing. OEF actions take place primarily in Afghanistan, but OEF casualties also include American casualties in other countries, listed within this report.
Date: March 10, 2011
Creator: Chesser, Susan G.
Object Type: Report
System: The UNT Digital Library