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Expand the Modeling Capabilities of DOE's EnergyPlus Building Energy Simulation Program

Description: EnergyPlus{trademark} is a new generation computer software analysis tool that has been developed, tested, and commercialized to support DOE's Building Technologies (BT) Program in terms of whole-building, component, and systems R&D (http://www.energyplus.gov). It is also being used to support evaluation and decision making of zero energy building (ZEB) energy efficiency and supply technologies during new building design and existing building retrofits. Version 1.0 of EnergyPlus was release… more
Date: February 28, 2008
Creator: Shirey, Don
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

IMPROVING THE ENERGY PERFORMANCE OF RESIDENTIAL CLOTHESDRYERS

Description: Experiments were conducted to evaluate four techniques to improve the energy efficiency of electrically-heated domestic clothes dryers. Reduced air flow rate and heater input led to energy savings around 8%, while recirculation of a portion of the exhaust air back into the clothes dryer reduced energy consumption by approximately 18%. These two measures are attractive because of their low cost. Two modes of using an air-to-air heat exchanger for heat recovery were considered. The first is to pr… more
Date: February 1, 1984
Creator: Hekmat, D. & Fisk, W.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

HAWT Performance With Dynamic Stall

Description: In this report we calculated the effects of flow nonuniformities (wing shear, tower wake, yaw, and large-scale turbulence) on the performance of a horizontal axis wind turbine, accounting for dynamic stall. We modified the PROP program to incorporate and compare these effects with the uniform flow case. The MIT model, which predicts dynamic lift coefficients substantially higher than the static maximum values and includes a crude model of the vortex roll-off phenomenon, represented dynamic stal… more
Date: February 1, 1986
Creator: Hibbs, B. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Atmospheric studies in complex terrain: a planning guide for future studies

Description: The objective of this study is to assist the US Department of Energy in Conducting its atmospheric studies in complex terrain (ASCOT0 by defining various complex terrain research systems and relating these options to specific landforms sites. This includes: (1) reviewing past meteorological and diffusion research on complex terrain; (2) relating specific terrain-induced airflow phenomena to specific landforms and time and space scales; (3) evaluating the technical difficulty of modeling and mea… more
Date: February 1, 1981
Creator: Orgill, M.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Uninstrumented assembly airflow testing in the Annular Flow Distribution facility

Description: During the Emergency Cooling System phase of a postulated large-break loss of coolant accident (ECS-LOCA), air enters the primary loop and is pumped down the reactor assemblies. One of the experiments performed to support the analysis of this accident was the Annular Flow Distribution (AFD) experiment, conducted in a facility built for this purpose at Babcock and Wilcox Alliance Research Center in Alliance, Ohio. As part of this experiment, a large body of airflow data were acquired in a protot… more
Date: February 1, 1992
Creator: Kielpinski, A. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Evaluation of a Combined Ultraviolet Photocatalytic Oxidation(UVPCO)/Chemisorbent Air Cleaner for Indoor Air Applications

Description: We previously reported that gas-phase byproducts of incomplete oxidation were generated when a prototype ultraviolet photocatalytic oxidation (UVPCO) air cleaner was operated in the laboratory with indoor-relevant mixtures of VOCs at realistic concentrations. Under these conditions, there was net production of formaldehyde and acetaldehyde, two important indoor air toxicants. Here, we further explore the issue of byproduct generation. Using the same UVPCO air cleaner, we conducted experiments t… more
Date: February 1, 2007
Creator: Hodgson, Alfred T.; Destaillats, Hugo; Hotchi, Toshifumi & Fisk,William J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

PRELIMINARY FIELD EVALUATION OF MERCURY CONTROL USING COMBUSTION MODIFICATIONS

Description: In this project General Electric Energy and Environmental Research Corporation conducts a preliminary field evaluation of a novel technology, referred to as Hg/NO{sub x}, that can reduce emissions of both mercury (Hg) and oxides of nitrogen (NO{sub x}) from coal-fired power plants. The evaluation takes place in Green Station Unit 2 operated by Western Kentucky Energy. Reduction of Hg and NO{sub x} emissions in Unit 2 is achieved using coal reburning. Activities during first project year (Januar… more
Date: February 19, 2004
Creator: Lissianski, Vitali & Marquez, Antonio
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A model for simulating airflow and pollutant dispersion around buildings

Description: A three-dimensional, numerical mode1 for simulating airflow and pollutant dispersion around buildings is described. The model is based on an innovative finite element approach and fully implicit time integration techniques. Linear and nonlinear eddy viscosity/diffusivity submodels are provided for turbulence parameterization. Mode1 predictions for the flow-field and dispersion patterns around a surface-mounted cube are compared with measured data from laboratory experiments.
Date: February 24, 1999
Creator: Chan, S T & Lee, R L
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Development of dry barriers for containment and remediation at waste sites

Description: This paper describes a concept in which dry air is injected into an unsaturated formation to reduce the soil moisture content, referred to here as a dry (or sometimes tensiometric) barrier. The objective is to reduce the hydraulic conductivity of the unsaturated media to the point where liquid phase transport becomes negligible, thereby achieving containment. The concept could be applied in subsurface formations to provide containment from a leaking facility, or it could be incorporated into a … more
Date: February 1, 1994
Creator: Thomson, B. M.; Morris, C. E.; Stormont, J. & Ankeny, M. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Formation of thallium based high temperature superconductors using aerosol flow reacted precursor powders

Description: Highly anisotropic particles of various thallium containing superconductors were grown. The Tl free precursor powders with the nominal compositions Ba{sub 1}Ca{sub 2}Cu{sub 3}Ag{sub 0.37}O{sub 6} and Ba{sub 2}Ca{sub 2}Cu{sub 3}Ag{sub 0.37}O{sub 7} were prepared using an aerosol flow reactor. These precursor powders were post-annealed in 0.1 atm oxygen at 700{degree}C for 4h to reduce the carbon present, and subsequently mixed with Tl{sub 2}O{sub 3} (typical composition of Tl{sub x}; x = 0.6 {mi… more
Date: February 1, 1995
Creator: Brynestad, J.; Paranthaman, M.; Goyal, A.; Heatherly, D. E. & Kroeger, D. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A comparison of two- and three-dimensional S809 airfoil properties for rough and smooth HAWT (horizontal-axis wind turbine) rotor operation

Description: At the Solar Energy Research Institute (SERI), we carried out tests to measure the effects of leading-edge roughness on an S809 airfoil using a 10-m, three-bladed, horizontal-axis wind turbine (HAWT). The rotor employed a constant-chord (.457 m) blade geometry with zero twist. Blade structural loads were measured with strain gages mounted at 9 spanwise locations. Airfoil pressure measurements were taken at the 80% spanwise station using 32 pressure taps distributed around the airfoil surface. D… more
Date: February 1, 1990
Creator: Musial, W. D.; Butterfield, C. P. & Jenks, M. D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

NREL Provides Guidance to Improve Air Mixing and Thermal Comfort in Homes (Fact Sheet)

Description: NREL research determines optimal HVAC system design for proper air mixing and thermal comfort in homes. As U.S. homes become more energy efficient, heating, ventilation, and cooling (HVAC) systems will be downsized, and the air flow volumes required to meet heating and cooling loads may be too small to maintain uniform room air mixing-which can affect thermal comfort. Researchers at the National Renewable Energy Laboratory (NREL) evaluated the performance of high sidewall air supply inlets and … more
Date: February 1, 2012
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of a Quantitative TaqMan{trademark}-PCR Assay and Feasibility of Atmosphoric Collection for Coccidioides Immits for Ecological Studies

Description: Understanding and then modeling the complex relationships between environmental, climatological, and biological systems can present great opportunities for developing effective strategies to prevent outbreaks of environmentally linked infectious disease. For example, a report from the American Academy of Microbiology (Rose et al., 2001) points out that including climatic signals and ecological triggers into the decision making process for disease management, is going to be essential for develop… more
Date: February 1, 2002
Creator: Daniels, J. I.; Wilson, W. J.; DeSantis, T. Z.; Gouveia, F. J.; Anderson, G. L.; Shinn, J. H. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Air Quality and Road Emission Results for Fort Stewart, Georgia

Description: The Directorate of Public Works Environmental & Natural Resources Division (Fort Stewart /Hunter Army Airfield) contracted with the Pacific Northwest National Laboratory (PNNL) to monitor particulate matter (PM) concentrations on Fort Stewart, Georgia. The purpose of this investigation was to establish a PM sampling network using monitoring equipment typically used in U.S. Environmental Protection Agency (EPA) ''saturation sampling'', to determine air quality on the installation. In this initia… more
Date: February 2, 2004
Creator: Kirkham, Randy R.; Driver, Crystal J.; Chamness, Mickie A. & Barfuss, Brad C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Evaluation of Ultra-Violet Photocatalytic Oxidation for Indoor AirApplications

Description: Acceptable indoor air quality in office buildings may be achieved with less energy by combining effective air cleaning systems for volatile organic compounds (VOCs) with particle filtration then by relying solely on ventilation. For such applications, ultraviolet photocatalytic oxidation (UVPCO) systems are being developed for VOC destruction. An experimental evaluation of a UVPCO system is reported. The evaluation was unique in that it employed complex mixtures of VOCs commonly found in office… more
Date: February 1, 2006
Creator: Hodgson, A. T.; Sullivan, D. P. & Fisk, W. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Alexandria fluidized-bed process development unit: cold-mode testing

Description: The objectives of the current test program include: validation of predictions from the Massachusetts Institute of Technology (MIT) Coal Atmospheric Fluidized Bed Combustor System Model; experimental studies supporting AFBC process developments; and the collection of transient data for process control design. This topical report summarizes results from cold mode testing, i.e., experiments performed without combustion for MIT Model verification. During these tests, sulfated limestone (generated f… more
Date: February 1, 1981
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

National Ignition Facility computational fluid dynamics modeling and light fixture case studies

Description: This report serves as a guide to the use of computational fluid dynamics (CFD) as a design tool for the National Ignition Facility (NIF) program Title I and Title II design phases at Lawrence Livermore National Laboratory. In particular, this report provides general guidelines on the technical approach to performing and interpreting any and all CFD calculations. In addition, a complete CFD analysis is presented to illustrate these guidelines on a NIF-related thermal problem.
Date: February 1, 1998
Creator: Martin, R.; Bernardin, J.; Parietti, L. & Dennison, B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Engineering task plan for BX/BY compressor upgrade

Description: This Engineering Task Plan outlines the remaining work to be completed for the BX/BY Instrument Air upgrade. Initial work efforts were guided by Engineering Work Plan, ``BX-BY Compressor Upgrade`` dated 1-25-93 (see Attachment A) which is provided for information. The overall engineering task is to provide a permanent replacement for the instrument air supply system for the 241-BX/BY Tank Farms. The existing system consists of a 25 horsepower Worthington non-lube compressor and an Oriad air dry… more
Date: February 7, 1995
Creator: Strand, R.G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Airflow and dispersion around multiple buildings

Description: A three dimensional, finite element-based, flow and dispersion model is used to simulate the transport and fate of hazardous releases in the atmosphere. Numerical results are presented for two experimental studies: (1) Airflow and dispersion over multiple blocks in a wind tunnel; and (2) Tracer study of a point release in the neighborhood of a building complex.
Date: February 1, 1999
Creator: Chan, S. T.; Lee, R. L.; Leone, J. M. Jr. & Stevens, D. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Effect of repository underground ventilation on emplacement drift temperature control

Description: The repository advanced conceptual design (ACD) is being conducted by the Civilian Radioactive Waste Management System, Management & Operating Contractor. Underground ventilation analyses during ACD have resulted in preliminary ventilation concepts and design methodologies. This paper discusses one of the recent evaluations -- effects of ventilation on emplacement drift temperature management.
Date: February 1, 1996
Creator: Yang, Hang; Sun, Yiming; McKenzie, Daniel G. & Bhattacharyya, Kalyan K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Investigation of the effect of coal particle sizes on the interfacial and rheological properties of coal-water slurry fuels. Quarterly report No. 1 (FY 96), July 1, 1995--September 30, 1995

Description: Preliminary experiment has been made for cross injecting water sprays into a convective air stream to test the air-blast atomization system which has been constructed for CWS atomization in the future. A laser diffraction particle analyzing technique (the Malvern system) nonintrusively measured the drop size SMDs for various injection parameters including the convective air flow rate, flow rate of the injected liquid (distilled water), orifice diameter, and measurement locations along the two-d… more
Date: February 1, 1996
Creator: Kihm, K.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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