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Numerical modeling of water injection into vapor-dominatedgeothermal reservoirs

Description: Water injection has been recognized as a powerful techniquefor enhancing energy recovery from vapor-dominated geothermal systemssuch as The Geysers. In addition to increasing reservoir pressures,production well flow rates, and long-term sustainability of steamproduction, injection has also been shown to reduce concentrations ofnon-condensible gases (NCGs) in produced steam. The latter effectimproves energy conversion efficiency and reduces corrosion problems inwellbores and surface lines.This r… more
Date: November 6, 2006
Creator: Pruess, Karsten
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Technical and QA plan: Boiling behavior during flow instability

Description: The coolant flow in a nuclear reactor core under normal operating conditions is kept as a subcooled liquid. This coolant is evenly distributed throughout the multiple flow channels with a uniform pressure profile across each coolant flow channel. If the coolant flow is reduced, the flow through individual channels will also decrease. A decrease in coolant flow will result in higher coolant temperatures if the heat flux is not reduced. When flow is significantly decreased, localized boiling may … more
Date: September 6, 1991
Creator: Coutts, D. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Results of sludge slurry pipeline pluggage tests. [Simulation of Radioactive Slurry Flow]

Description: Test results of sludge slurry transport through the Interarea Transfer Line (IAL) Mock-up Facility showed little risk of plugging the interarea pipelines with sludge slurry. Plug-free operation of the pipeline was successfully demonstrated by worst case IAL operating scenarios. Pipeline pressure gradients were measured vs. flow rate for comparison with a computer model over a range of sludge slurry rheological properties. A mathematical computer model developed by L. M. Lee is included in this … more
Date: February 6, 1987
Creator: Fazio, J.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Carbon Nanotube-Based Permeable Membranes

Description: A membrane of multiwalled carbon nanotubes embedded in a silicon nitride matrix was fabricated for use in studying fluid mechanics on the nanometer scale. Characterization by fluorescent tracer diffusion and scanning electron microscopy suggests that the membrane is void-free near the silicon substrate on which it rests, implying that the hollow core of the nanotube is the only conduction path for molecular transport. Assuming Knudsen diffusion through this nanotube membrane, a maximum helium t… more
Date: April 6, 2004
Creator: Holt, J K; Park, H G; Bakajin, O; Noy, A; Huser, T & Eaglesham, D
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Novel disk modules for membrane separation processes

Description: The reverse osmosis (RO) system at the Effluent Treatment Facility (ETF) at the Savannah River Site, Aiken, South Carolina has experienced fouling from trace quantities of inorganics (Al, Fe, and Si) and l.E5-l.E7/ml bacteria. The bacteria are primarily produced in an upstream Hg-removal resin bed/activated carbon bed process. The bacteria adhere to the colloidal inorganics that are in the membrane feed at their solubility limits (having been precipitated and removed upstream by a ceramic micro… more
Date: December 6, 1993
Creator: Siler, J. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Technical and QA plan: Boiling behavior during flow instability

Description: The coolant flow in a nuclear reactor core under normal operating conditions is kept as a subcooled liquid. This coolant is evenly distributed throughout the multiple flow channels with a uniform pressure profile across each coolant flow channel. If the coolant flow is reduced, the flow through individual channels will also decrease. A decrease in coolant flow will result in higher coolant temperatures if the heat flux is not reduced. When flow is significantly decreased, localized boiling may … more
Date: September 6, 1991
Creator: Coutts, D. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Supplementary report of preliminary testing production test IP-234-AE: Supplement 2, Project CG-775, prototype testing of the 190-K process pumping units

Description: It was necessary to provide a basis for the design of modifications to the 190-K pumping units to achieve increased process water flow rates. The prototype pumping unit was inspected for cavitation damage after 3 months operation. The low lift pump impeller showed no cavitation damage, while the high lift pump impeller showed excessive damage. The lower max flow capacity and slightly increased power requirements of the third prototype impeller should not preclude its use if its cavitation perfo… more
Date: April 6, 1961
Creator: Schack, M. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Production test IP-338-A: DR-reactor heat decay test at high outlet water temperatures

Description: This test is designed to obtain up-to-date information on heat decay values following a reactor scram. More specifically its purpose is to determine the effect of increased outlet water temperatures upon this heat output value. A recent review of the ``last ditch`` cooling system at the Hanford reactors indicated that at some reactors this backup coolant supply did not meet our coolant adequacy criteria at certain critical times after the loss of electric and steam pumping power. On the basis o… more
Date: March 6, 1961
Creator: Jones, S. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Capillary Electrophoresis - Optical Detection Systems

Description: Molecular recognition systems are developed via molecular modeling and synthesis to enhance separation performance in capillary electrophoresis and optical detection methods for capillary electrophoresis. The underpinning theme of our work is the rational design and development of molecular recognition systems in chemical separations and analysis. There have been, however, some subtle and exciting shifts in our research paradigm during this period. Specifically, we have moved from mostly separa… more
Date: August 6, 2001
Creator: Sepaniak, M. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Recharge and Lateral Groundwater Flow Boundary Conditions for the Saturated Zone Site-Scale Flow and Transport Model

Description: This analysis is designed to use existing modeling and analysis results as the basis for estimated groundwater flow rates into the saturated zone (SZ) site-scale model domains, both as recharge (infiltration) at the upper boundary (water table), and as underflow at the lateral boundaries. Specifically, this work compiles information on the recharge boundary conditions supplied to the base-case and alternate SZ site-scale flow models taken from (1) distributed recharge from the 1997 (D'Agnese et… more
Date: October 6, 2004
Creator: James, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

In situ sampling cart development engineering task plan

Description: This Engineering Task Plan (ETP) supports the development for facility use of the next generation in situ sampling system for characterization of tank vapors. In situ sampling refers to placing sample collection devices (primarily sorbent tubes) directly into the tank headspace, then drawing tank gases through the collection devices to obtain samples. The current in situ sampling system is functional but was not designed to provide the accurate flow measurement required by today`s data quality … more
Date: February 6, 1995
Creator: DeFord, D. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Construction of Industrial Electron Beam Plant for Wastewater Treatment

Description: A pilot plant for treating 1,000 m3/day of dyeing wastewater with e-beam has been constructed and operated since 1998 in Daegu, Korea together with the biological treatment facility. The wastewater from various stages of the existing purification process has been treated with electron beam in this plant, and it gave rise to elaborate the optimal technology of the electron beam treatment of wastewater with increased reliability at instant changes in the composition of wastewater. Installation of… more
Date: October 6, 2004
Creator: Han, B.; Kim, J.; Kim, Y.; Kim, S.; Lee, M.; Choi, J. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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