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Measured Infiltration and Ventilation in Manufactured Homes : Residential Construction Demonstration Project, Cycle II.
Air infiltration is an important factor in heat loss and indoor air quality; in modern well-insulated homes, it may account for as much as half of the total heat loss. Due to the recent emphasis by home buyers and manufacturers on energy efficiency, tighter homes are being constructed. In the past, it was assumed that natural infiltration would provide adequate ventilation to maintain acceptable indoor air quality, but this is no longer the case in modern energy-efficient homes. This report summarizes the results of infiltration measurements made on two groups of manufactured homes in the Bonneville Power Administration (BPA) service area: 131 energy-efficient homes constructed under RCDP, and a control group of 29 homes not participating in energy-efficiency programs.
Date:
April 28, 1992
Creator:
Palmiter, Larry S.
Object Type:
Report
System:
The UNT Digital Library
Feasibility study: Application of RCM techniques for substation maintenance at the Bonneville Power Administration. [Reliability Centered Maintenance (RCM)]
This feasibility study examines reliability centered maintenance (RCM) as it applies to Bonneville Power Administrations (BPA) substation maintenance program. Reliability techniques are examined in evaluated. Existing BPA equipment maintenance procedures are documented. Equipment failure history is considered. Economic impacts are estimated. Various equipment instrumentation methods are reviewed. Based on this analysis a prototype system is proposed. The prototype will be implemented in two phases. Phase 1 is to be completed in 1992, it includes instrumenting one power transformer and one oil circuit breaker. Software development will focus on displaying data. Phase 2 is to be completed the following year. The remaining transformers and breakers will be instrumented during the second phase. Software development will focus on predictive maintenance techniques and maintenance decision support.
Date:
May 28, 1992
Creator:
Purucker, S. L.; Tonn, B. E.; Goeltz, R. T.; James, R. D.; Kercel, S.; Rizy, D. T. et al.
Object Type:
Report
System:
The UNT Digital Library
Heat exchanger restart evaluation
On December 24, 1991, the K-Reactor was in the shutdown mode with full AC process water flow and full cooling water flow. Safety rod testing was being performed as part of the power ascension testing program. The results of cooling water samples indicated tritium concentrations higher than allowable. Further sampling and testing confirmed a Process Water System to Cooling Water System leak in heat exchanger 4A (HX 4A). The heat exchanger was isolated and the plant shutdown. Heat exchanger 4kA was removed from the plant and moved to C-Area prior to performing examinations and diagnostic testing. This included locating and identifying the leaking tube or tubes, eddy current examination of the leaking tube and a number of adjacent tubes, visually inspecting the leaking tube from both the inside as well as the area surrounding the failure mechanism. In addition ten other tubes that either exhibited eddy current indications or would represent a baseline condition were removed from heat exchanger 4A for metallurgical examination. Additional analysis and review of heat exchanger leakage history was performed to determine if there are any patterns which can be used for predictive purposes. Compensatory actions have been taken to improve the sensitivity and response time …
Date:
February 28, 1992
Creator:
Morrison, J. M.; Hirst, C. W. & Lentz, T. F.
Object Type:
Report
System:
The UNT Digital Library
Photogenerated carrier-induced reactions on uhv semiconductor surfaces
The objective for this experimental work was to examine the reaction mechanisms, half-collision dynamics, and other optically induced chemical effects, that are operable on a well characterized single-crystal semiconductor surface. Of particular interest were reactions induced by charge transfer from the semiconductor surface including hot carrier and thermalized carrier processes. The primary technique to measure the desorbed fragment translational energies was time-of-flight mass-spectroscopy, used in conjunction with a pulsed tunable laser source. The work was carried out in ultrahigh vacuum, thus other surface spectroscopies such as temperature-programmed desorption, (TPD), (LEED), etc. were used as needed. In the project, the photoreactions of several halogen-containing molecules on GaAs(110) surfaces have been investigated. The studies have made the first observations of several new photochemical processes on uhv prepared surfaces including intermolecular charge transfer; desorption by thermal-carrier-induced reactions (including the measurement of coverage-dependent changes in the translational energies of the desorbed products); interferometric oscillation of photoinduced reactions; and self-quenching of thermal carrier reactions on surfaces.
Date:
May 28, 1992
Creator:
Osgood, R.M. Jr.
Object Type:
Report
System:
The UNT Digital Library
[Photograph 2012.201.B0091.0576]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "A pheasant and some ducks grace Eileen Myers' shop wall."
Date:
January 28, 1992
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0138.0354]
Photograph used for a story in the Daily Oklahoman newspaper.
Date:
May 28, 1992
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0161.0182]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "John Dewhirst / Holding a handful of weeds / former baseball coach Southeast High School."
Date:
May 28, 1992
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0161.0181]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Former Southeast coach John Dewhirst laments the condition of the field where many baseball greats played in high school."
Date:
May 28, 1992
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0148.0002]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
July 28, 1992
Creator:
Southerland, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0147.0285]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Rudy Cox, left, Mile Hickey, event chairman, background, and golf pro Don Maddox get ready."
Date:
May 28, 1992
Creator:
Hennigan, Vince
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0316B.0028]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Johnson Marketing president Patty Casteel, sitting behind a one-way mirror, takes notes from a focus group discussion."
Date:
September 28, 1992
Creator:
Sisney, Steve
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0348.0465]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Terri and Nika Davis, from left, model matching rompers from the Ann Labay Originals spring group."
Date:
February 28, 1992
Creator:
Sisney, Steve
Object Type:
Photograph
System:
The Gateway to Oklahoma History
DC CICC retrofit magnet preliminary design, software development and analysis report
The January 1992 quarterly progress report discusses a two-dimensional finite element analysis (FEA) of the proposed retrofit MHD coil. The superconducting Cable-in-Conduit Conductor (CICC) winding pack has a smooth, semi-elliptical cross section and is supported by a similarly shaped strap which resists the electromagnetic forces tending to separate the coils on each side of the channel. The coils are designed to produce a peak on-axis field of 4.5 tesla with a nominal current density of 13.05{times}10{sup 6} A/m{sup 2}. A sketch of the magnet system and structure is shown in Fig. 1.0-1. The objective of this analysis is to quantify the highly 3-D characteristics of the proposed superconductivity magnet system, and develop an appropriate support concept. A fully paramatized 3-D finite element model of the coil and structure is developed as a means of obtaining the field and stress solutions. The flexibility of FEA and a model built using design parameters allows variations in the coil end turn bend radius, strap thickness, support details and positions to be studied. The preliminary results show the calculated stresses as a result of this iterative design process.
Date:
May 28, 1992
Creator:
Myatt, R. L. & Marston, P. G.
Object Type:
Report
System:
The UNT Digital Library
Encapsulation of hazardous wastes into agglomerates
The objective of this study was to investigate the feasibility of using the cementitious properties and agglomeration characteristics of coal conversion byproducts to encapsulate and immobilize hazardous waste materials. The intention was to establish an economical way of co-utilization and co-disposal of wastes. In addition, it may aid in the eradication of air pollution problems associated with the fine-powdery nature of fly ash. Encapsulation into agglomerates is a novel approach of treating toxic waste. Although encapsulation itself is not a new concept, existing methods employ high-cost resins that render them economically unfeasible. In this investigation, the toxic waste was contained in a concrete-like matrix whereby fly ash and other cementitious waste materials were utilized. The method incorporates the principles of solidification, stabilization and agglomeration. Another aspect of the study is the evaluation of the agglomeration as possible lightweight aggregates. Since fly ash is commercially used as an aggregate, it would be interesting to study the effect of incorporating toxic wastes in the strength development of the granules. In the investigation, the fly ash self-cementation process was applied to electroplating sludges as the toxic waste. The process hoped to provide a basis for delisting of the waste as hazardous and, thereby …
Date:
January 28, 1992
Creator:
Guloy, A.
Object Type:
Report
System:
The UNT Digital Library
[Photograph 2012.201.B0348.0463]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Couple's teamwork keeps clothing designs in women's and children's closets."
Date:
February 28, 1992
Creator:
Sisney, Steve
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0262.0022]
Photograph used for a story in the Daily Oklahoman newspaper.
Date:
May 28, 1992
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0261.0823]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Andy Hillenburg (2) leads Gary Wright (5) and Sammy Swindell through the turn during Saturday's World of Outlaws race at State Fair Speedway."
Date:
March 28, 1992
Creator:
Hellstern, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0261.0865]
Photograph used for a story in the Daily Oklahoman newspaper.
Date:
May 28, 1992
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0231.0418]
Photograph used for a story in the Daily Oklahoman newspaper.
Date:
August 28, 1992
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0223.0600]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Tom & Sandy Goldsworthy and Sue & Jim Kelley , from left, look over an auction program...."
Date:
March 28, 1992
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0231.0647]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Mike Gugello, baseball"
Date:
May 28, 1992
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0224.0529]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Oklahoma City police chief Sam Gonzales moderates a panel discussion of local, state and national programs aimed at reducing violent crime at the statewide conference on Addressing Violent Crime Through Community Involvement."
Date:
January 28, 1992
Creator:
Hellstern, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0354.0716]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Oklahoma City's Kurk Lee tries to a handle the ball while Omah's Ronnie Grandison applies defense pressure."
Date:
March 28, 1992
Creator:
Hellstern, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0256.0211]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Caroline and John Linehan, Robert Henry and Brenda and Tom McDaniel, from left, are ready for fun."
Date:
March 28, 1992
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History