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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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At least 1,099 records · Page 61
All sourcesNASA NTRSDOE OSTI
DOE OSTI2013

Short-Term Monitoring Results for Advanced New Construction Test House -- Roseville, California

A builder (K. Hovnanian Homes), design consultant, and trades collaborated to identify a systems integrated measures package for a 2,253-ft2 slab-on-grade ranch house to achieve a modeled energy savings of 60% with respect to the Building America House Simulation Protocols (Hendron, R. and Engebrecht, C. 'Building America House Simulation Protocols.' Golden, CO: National Renewable EnergyLaboratory, 2010) while minimizing construction costs and without requiring changes to the drawing that would impact local code or zoning approval. The key building improvements were applying R-10 insulation to the slab edge, increasing exterior wall cavity insulation from R-13 to R-15, and increasing attic insulation from R-30 to R-38. Also, the air handling unit was relocated from the attic toconditioned space, and ductwork was relocated along the attic floor with an insulated bulkhead built above it. Short-term testing results showed that duct air leakage was low due to short duct runs and the placement of ductwork in conditioned space. However, during commissioning, the lack of access for servicing the ductwork and dampers in the bulkhead area prevented retroactive balancing ofindividual branches, resulting in significant differences between specified and measured airflow values for some duct runs. Thermal imaging results performed on the house when operating in both heating and cooling modes validated historic stratification issues of ceiling supply registers with high supply air temperatures. Long-term monitoring results will be detailed in a future report.

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATI↗
DOE OSTI2013

Hybrid Wall Construction and Quality Control Issues in Wyandotte, Michigan

This report is the second report on the Wyandotte NSP2 project in Wyandotte, MI and documents refinements to the design, construction, and quality control for the High R-value enclosure. The report will be of interest to designers and builders of production housing in Cold Climates. The focus of the second round of research was on using the hybrid insulation approach to develop a reliable methodof achieving consistently low airtightness numbers. There are two primary outcomes from this research. First, the airtightness measurements demonstrate that with a shallow learning curve, even new builders entering the program having little experience with the technology package are able to achieve consistent results that are less than 1.5 ACH50. Second, the process changes implemented to helpsecure these results were straightforward and ended up encouraging better communication between designer, builder, and the City officials supervising the project.

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATI↗
DOE OSTI2016

Final report: Constructing comprehensive models of grain boundaries using high-throughput experiments

This is the final report on project DE-SC0008926. The goal of this project was to create capabilities for constructing, analyzing, and modeling experimental databases of the crystallographic characters and physical properties of thousands of individual grain boundaries (GBs) in polycrystalline metals. This project focused on gallium permeation through aluminum (Al) GBs and hydrogen uptake into nickel (Ni) GBs as model problems. This report summarizes the work done within the duration of this project (including the original three-year award and the subsequent one-year renewal), i.e. from August 1, 2012 until April 30, 2016.

36 MATERIALS SCIENCE↗
DOE OSTI2016

System Construction of the Stilbene Compact Neutron Scatter Camera

This report documents the construction of a stilbene-crystal-based compact neutron scatter camera. This system is essentially identical to the MINER (Mobile Imager of Neutrons for Emergency Responders) system previously built and deployed under DNN R&D funding,1 but with the liquid scintillator in the detection cells replaced by stilbene crystals. The availability of these two systems for side-by-side performance comparisons will enable us to unambiguously identify the performance enhancements provided by the stilbene crystals, which have only recently become commercially available in the large size required (3” diameter, 3” deep).

36 MATERIALS SCIENCE↗
DOE OSTI2017

Measure Guideline: Ventilation Guidance for Residential High-Performance New Construction - Multifamily

The measure guideline provides ventilation guidance for residential high performance multifamily construction that incorporates the requirements of the ASHRAE 62.2 ventilation and indoor air quality standard. The measure guideline focus is on the decision criteria for weighing cost and performance of various ventilation systems. The measure guideline is intended for contractors, builders, developers, designers and building code officials. The guide may also be helpful to building owners wishing to learn more about ventilation strategies available for their buildings. The measure guideline includes specific design and installation instructions for the most cost effective and performance effective solutions for ventilation in multifamily units that satisfies the requirements of ASHRAE 62.2-2016.

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATI↗
DOE OSTI2017

Measure Guideline: Ventilation Guidance for Residential High-Performance New Construction - Multifamily

The measure guideline provides ventilation guidance for residential high performance multifamily construction that incorporates the requirements of the ASHRAE 62.2 ventilation and indoor air quality standard. The measure guideline focus is on the decision criteria for weighing cost and performance of various ventilation systems. The measure guideline is intended for contractors, builders, developers, designers and building code officials. The guide may also be helpful to building owners wishing to learn more about ventilation strategies available for their buildings. The measure guideline includes specific design and installation instructions for the most cost effective and performance effective solutions for ventilation in multifamily units that satisfies the requirements of ASHRAE 62.2-2016.

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATI↗
DOE OSTI2016

Construction and Skilled Trades (CAST) Test Preparation, Final Report for period 10/1/2016 - 03/31/2017

Within the energy and utilities sectors, the most significant barrier for consideration and submittal of diverse applicants for skilled labor opportunities is their inability to successfully pass the industry’s Construction And Skilled Trades (CAST) examination. The exam is collectively accepted as the benchmark for prospective candidates and assess if they have the baseline skills and knowledge to apply for skilled positions within those industries. It is an exam that was created by the Edison Electric Institute. Students were taught for a full 40-hr week M-F. We conducted one class in each of the following locations: Philadelphia, Chicago and Washington, DC. The students learned and practiced curriculum prepared by the utility industry for increased success for the examination. They were also taught how to successfully navigate the final barrier of employment opportunity: behavior-based interviewing. They were then directed to the website in order to apply for the positions they desired, and then scheduled to take the exam. We were targeting at least 70% of those who sit for the exam to pass the first time. If they were unsuccessful, candidates could re-test within 3 months. We then sent their resumes directly to the hiring recruiters and managers so that they received prime consideration. Our target number of applicants who were successful in being invited for interviews was 15 candidates.

99 GENERAL AND MISCELLANEOUS↗
DOE OSTI2013

Natural Gas Well Construction and Installation

This unit process quantifies the materials, fuels, and emissions that are needed for/would result from construction and installation of a generic natural gas (NG) well. To access the model referenced in the report, please visit https://www.netl.doe.gov/energy-analysis/details?id=C91D0A44-4579-4B1E-A50F-2032CD00E15B

03 NATURAL GAS↗
DOE OSTI2013

LNG Liquefaction, Construction

This process encompasses the construction of a LNG liquefaction facility. To access the model referenced in the report, please visit https://www.netl.doe.gov/energy-analysis/details?id=BD237608-FEE7-46D6-9B93-D6986034C3B4

42 ENGINEERING↗
DOE OSTI2013

LNG Regasification, Construction

This process encompasses the construction of a LNG regasification facility. To access the model referenced in the report, please visit https://www.netl.doe.gov/energy-analysis/details?id=0AF95F2A-35C4-4BD6-9DD0-DF710D4741C4

42 ENGINEERING↗
DOE OSTI2015

Coal Crusher Facility, Construction

Total amount of materials used in the construction of a crushing facility and the coal crusher. To access the model referenced in the report, please visit https://www.netl.doe.gov/energy-analysis/details?id=538E3EB2-3AEB-42B7-A9CD-BD3BBBC6CC39

01 COAL, LIGNITE, AND PEAT↗
DOE OSTI2015

Shuttle Car Construction

The amount of steel used in the construction of one shuttle car to be used to haul coal from the working mine face to the conveyor belt in underground mining. To access the model referenced in the report, please visit https://www.netl.doe.gov/energy-analysis/details?id=551741C7-6DA8-4A7A-822B-0991D7FEDC79

01 COAL, LIGNITE, AND PEAT↗
DOE OSTI2019

Completion of Level 2 Milestone – M2AT 19IN030401044, Complete construction of the gas and moisture supply systems and receive the custom-designed tube furnace from the vendor

The Advanced Gas Reactor (AGR) program has designed and is now constructing the Air/Moisture Ingress Experiment (AMIX) facility to test irradiated tristructural isotropic (TRISO) fuels under air or moisture-ingress accidents postulated for high-temperature gas-cooled reactors. AMIX will ultimately be installed in the Fuel Conditioning Facility at the Materials and Fuels Complex (MFC) at Idaho National Laboratory. AMIX consists of a gas supply (capable of supplying mixtures of air/helium and steam/helium), a tube furnace capable of accepting samples up to 6 cm in diameter and heating them to 1650°C, gamma detectors for measuring the release of condensable, gamma-emitting fission products, and cold traps with gamma detectors for measuring the release of fission gases. Data obtained from AMIX experiments will be used to qualify this new generation of TRISO fuels with the U.S. Nuclear Regulatory Commission, and inform models and simulations of TRISO fuel accident performance and source term.

42 ENGINEERING↗
DOE OSTI2019

Development of Upscaling Techniques and Construction of Calibrated Models for Fractured Rocks Using Discrete Fracture Network Approaches

The Pahute Mesa Corrective Action Unit on the Nevada National Security Site (NNSS) contains several fractured aquifers that can potentially provide high-permeability pathways for radionuclides to migrate away from underground nuclear testing locations. Although the geometric properties of fractures, such as length and orientation, can be found using geophysical methods and borehole image analyses, the hydraulic property of fractures (which are primarily influenced by apertures) are often unknown or have a high degree of uncertainty attached to their values. The aperture values have a profound impact on groundwater velocity and are critical to understanding transport scales at Pahute Mesa. Fracture aperture values and their distributions also have dominant control over radionuclide transport with potential for long-range correlations or scale-invariant dynamics. Understanding of the small-scale transport variability in fractures could lead to identification of distinct characteristics on larger scales. Furthermore, upscaling techniques need to be developed to adequately predict transport behavior at field scales by capturing the transport trends of smaller scale networks. This report explores these vital modeling needs to understand the role of fractures in Pahute Mesa. Discrete fracture network (DFN) models are the basis for constructing a well-calibrated model to ascertain aperture values of fractures in lava-flow aquifers. These models are also used to develop and compare the usefulness of several random-walk-based models to perform transport upscaling.

54 ENVIRONMENTAL SCIENCES↗
DOE OSTI2020

Impact of Permanganate Oxidation of Glycolate on Corrosion of the Defense Waste Processing Facility (DWPF) Recycle Collection Tank (RCT), Transfer-line and Waste Tank Materials of Construction (MoC)

Savannah River Remediation (SRR) is evaluating the use of glycolic acid to replace formic acid as an alternate reductant for the Defense Waste Processing Facility (DWPF) at Savannah River Site (SRS). The replacement is aimed at reducing facility hazards, improving pH stability and rheological control, and lowering off gas production. Glycolate, which is the product that may remain, can also be carried downstream to High-Level Waste and Low-Level Waste facilities. Complete oxidation of glycolate and other organic species from the Sludge Receipt and Adjustment Tank (SRAT) may be necessary to minimize thermolytic hydrogen generation that can cause flammability issues. The glycolate oxidation may be performed in the Recycle Collection Tank (RCT). The RCT heel would be adjusted with sodium hydroxide to maintain the solution caustic and sodium nitrite as corrosion inhibitor prior to the addition of condensate that can be from the contents of the Slurry Mix Evaporator Condensate Tank (SMECT) or Offgas Condensate Tank (OGCT). The RCT tank collects the waste to be transferred via the Low Point Pump Pit – Recycle Pump Tank (LPPP-RPT) through a jacketed transfer-line to the Tank Farm facility. Scoping studies were performed to evaluate an oxidizing agent and sodium permanganate was selected as the best option for glycolate destruction. Testing was recommended to determine the impact on the Materials of Construction (MoC) due to the addition of sodium permanganate. The targeted concentration of sodium permanganate used equated to a 7:1 molar permanganate to glycolate ratio (nominally 0.002 M permanganate). However, to conservatively maximize the permanganate corrosivity, in some cases no glycolate was added.

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE W↗
DOE OSTI2020

Diffusion Models to Construct a First Principles Multipole-Based Cable Braid Model for Conducting Wires in the Time Domain

We describe here diffusion models apt to construct a multipole-based, cable braid time domain model for conducting wires. Implementation details of both a ladder network valid for time-domain signals with all frequency content and an approximate single-stage circuit valid for low-frequency dominated time signals (such as electromagnetic pulses) are reported. This time domain model can be leveraged to treat system-generated electromagnetic pulse events, as well as used to further confirm the correctness of the multipole-based, cable braid frequency domain model.

42 ENGINEERING↗
DOE OSTI2020

Using density functional theory to construct multiphase equations of state: tin as an example

We present a general methodology for using density functional theory (DFT) calculations as a basis for constructing multiphase equations of state (EOS). Focusing on tin as an example, we discuss the full process of generating a tabular EOS, starting from first-principles calculations and arriving at a full EOS in agreement with existing experimental data. We begin by describing DFT calculations for the five solid phases and liquid phase of tin, including cold curve, phonon, and DFT-based molecular dynamics calculations. We then discuss methods for incorporating DFT results into materials models used in OpenSesame, the program used to create a full tabular multiphase EOS. Next, we outline a general strategy for adjusting model parameters in OpenSesame to fit to a variety of experimental data, including isobaric data, isothermal data, shock data, solid-solid phase boundary measurements, and measurements of the melt curve. We end with a discussion of the advantages of using DFT data as a foundation for EOS generation and discuss potential strategies for automated EOS generation based on the fitting process highlighted in this work.

74 ATOMIC AND MOLECULAR PHYSICS↗
DOE OSTI2021

Construction, characterization and crystal structure of a fluorescent single-chain Fv chimera [Slides]

Conclusions of the presentation were: The scTGPs are recombinant intrinsically fluorescent antibodies, ready for use in traditional fluorescent antibody based assays; The scFPs can be constructed as vL-FP-vH format, TGP an extremely stable monomeric fluorescent protein is suitable FP; The scFPs can be effectively displayed on yeast, where they function similarly to their corresponding scFv counterparts, recognize specific antigen similar affinity; Functional expression levels of scFPs in the bacterial cytoplasm are relatively high and can rescue some scFvs otherwise expressed at low levels in the periplasm; Straightforward assessment of expression levels and monitoring of protein purification steps; Antigen recognition in one step binding assays, novel assays such as epitope binning TGP is a monomeric fluorescent protein amenable to crystallization. These features provide unique and valuable characteristics to scTGP molecules for their use in protein chemistry; and, We present unique antibody format with wide variety of use in research and clinical setting

59 BASIC BIOLOGICAL SCIENCES↗