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Advanced, Low/Zero Emission Boiler Design and Operation
In partnership with the U.S. Department of Energy's National Energy Technology Laboratory, B&W and Air Liquide are developing and optimizing the oxy-combustion process for retrofitting existing boilers as well as new plants. The main objectives of the project is to: (1) demonstrate the feasibility of the oxy-combustion technology with flue gas recycle in a 5-million Btu/hr coal-fired pilot boiler, (2) measure its performances in terms of emissions and boiler efficiency while selecting the right oxygen injection and flue gas recycle strategies, and (3) perform technical and economic feasibility studies for application of the technology in demonstration and commercial scale boilers. This document summarizes the work performed during the period of performance of the project (Oct 2002 to June 2007). Detailed technical results are reported in corresponding topical reports that are attached as an appendix to this report. Task 1 (Site Preparation) has been completed in 2003. The experimental pilot-scale O{sub 2}/CO{sub 2} combustion tests of Task 2 (experimental test performance) has been completed in Q2 2004. Process simulation and cost assessment of Task 3 (Techno-Economic Study) has been completed in Q1 2005. The topical report on Task 3 has been finalized and submitted to DOE in Q3 2005. The calculations …
Date:
June 30, 2007
Creator:
/Wilcox, Babcock; Geological, Illinois State; Parsons, Worley & Group, Parsons Infrastructure /Technology
Object Type:
Report
System:
The UNT Digital Library
Prediction of atmospheric δ13CO2 using fossil plant tissues. Reviews of Geophysics, 46/2006RG0002.(view/download pdf)
To summarize the content: we presented the results of laboratory experiments designed to quantify the relationship between plant tissue δ13C and δ13CO2 values under varying environmental conditions, including differential pCO2 ranging from 1 to 3 times today’s levels. As predicted, plants grown under elevated pCO2 showed increased average biomass compared to controls grown at the same temperature. Across a very large range in δ13Ca (≈ 24 ‰) and pCO2 (≈ 740 ppmv) we observed a consistent correlation between δ13Ca and δ13Cp (p<0.001). We show an average isotopic depletion of −25.4 ‰ for above-ground tissue and −23.2 ‰ for below-ground tissue of Raphanus sativus L. relative to the composition of the atmosphere under which it formed. For both above- and below-ground tissue, grown at both ~23 ˚C and ~29 ˚C, correlation was strong and significant (r2 ≥ 0.98, p<0.001); variation in pCO2 level had little or no effect on this relationship.
Date:
June 30, 2008
Creator:
A.H. Jahren, N.C. Arens and S.A. Harbeson
Object Type:
Report
System:
The UNT Digital Library
[AIDS ARMS Network, Inc. Monthly Service Report]
A report for the month of June 1991 detailing clients' personal information, such as their income levels and race/ethnicity.
Date:
June 30, 1991
Creator:
AIDS ARMS Network, Inc.
Object Type:
Dataset
System:
The UNT Digital Library
[Blank monthly service report]
An AIDS ARMS Network monthly service report form for the AIDS Resource Center dated June 1989.
Date:
June 30, 1989
Creator:
AIDS ARMS Network, Inc.
Object Type:
Text
System:
The UNT Digital Library
[Draft of proposed mission statement and operating goals]
A draft of a mission statement and operating goals for the AIDS ARMS Network; the draft is dated June 30, 1989.
Date:
June 30, 1989
Creator:
AIDS ARMS Network, Inc.
Object Type:
Text
System:
The UNT Digital Library
Injection into the SNS accumulator ring: Minimizing uncontrolled losses and dumping stripped electrons
None
Date:
June 30, 2000
Creator:
Abell, D. T.; Lee, Y. Y. & Meng, W.
Object Type:
Article
System:
The UNT Digital Library
Coupling 2-D cylindrical and 3-D x-y-z transport computations
This paper describes a new two-dimensional (2-D) cylindrical geometry to three-dimensional (3-D) rectangular x-y-z splice option for multi-dimensional discrete ordinates solutions to the neutron (photon) transport equation. Of particular interest are the simple transformations developed and applied in order to carry out the required spatial and angular interpolations. The spatial interpolations are linear and equivalent to those applied elsewhere. The angular interpolations are based on a high order spherical harmonics representation of the angular flux. Advantages of the current angular interpolations over previous work are discussed. An application to an intricate streaming problem is provided to demonstrate the advantages of the new method for efficient and accurate prediction of particle behavior in complex geometries.
Date:
June 30, 1998
Creator:
Abu-Shumays, I. K.; Yehnert, C. E. & Pitcairn, T. N.
Object Type:
Article
System:
The UNT Digital Library
Biological Conversion of Synthesis Gas
Overall mass transfer coefficients for CO have been determined in a continuous stirred-tank reactor at agitation rates of 300--700 rpm using a biological system with the photosynthetic bacterium Rhodospirillum rubrum. A non-steady state approach was employed in order to separate mass transfer and kinetic limited regions of the fermentation. As a result, a kinetic model could be developed for specific CO uptake by the culture including the apparent CO inhibition. The maximum specific CO uptake rate found matched the earlier results obtained in batch culture and by other investigators. CO inhibition was more predominant in CSTR culture than in batch culture, perhaps due to CO acclimation. The growth of the photosynthetic bacterium Chlorobium thiosulfatophilum on CO[sub 2] has been studied at light intensities ranging from 27-1723 lux in batch culture. Modeling results indicate that growth is dependent upon light intensity according to a Monod type relationship.
Date:
June 30, 1992
Creator:
Ackerson, M. D.; Clausen, E. C. & Gaddy, J. L.
Object Type:
Report
System:
The UNT Digital Library
Biological Conversion of Synthesis Gas. Project Status Report, April 1, 1992--June 30, 1992
Overall mass transfer coefficients for CO have been determined in a continuous stirred-tank reactor at agitation rates of 300--700 rpm using a biological system with the photosynthetic bacterium Rhodospirillum rubrum. A non-steady state approach was employed in order to separate mass transfer and kinetic limited regions of the fermentation. As a result, a kinetic model could be developed for specific CO uptake by the culture including the apparent CO inhibition. The maximum specific CO uptake rate found matched the earlier results obtained in batch culture and by other investigators. CO inhibition was more predominant in CSTR culture than in batch culture, perhaps due to CO acclimation. The growth of the photosynthetic bacterium Chlorobium thiosulfatophilum on CO{sub 2} has been studied at light intensities ranging from 27-1723 lux in batch culture. Modeling results indicate that growth is dependent upon light intensity according to a Monod type relationship.
Date:
June 30, 1992
Creator:
Ackerson, M. D.; Clausen, E. C. & Gaddy, J. L.
Object Type:
Report
System:
The UNT Digital Library
[Photograph 2012.201.B0348.0319]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "george "Slugger" Kurowski, Jr., 1-year-old son of Cardinals Third sacker "Whitey" Kurowski, looks like a small edition of his well known dad as they put in a pregame workout at Sportsman's Park in St. Louis."
Date:
June 30, 1947
Creator:
Acme Newspictures (New York, N.Y.)
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Oral History Interview with Bobby Galvan, June 30, 2016
Mr. Galvan shares his personal history as a musician and store owner in Corpus Christi.
Date:
June 30, 2016
Creator:
Acuña-Gurrola, Moisés & Galvan, Bobby
Object Type:
Video
System:
The Portal to Texas History
Oral History Interview with Vic Medina, June 30, 2016
Vic Medina recounted his father's experience with discrimination in the Corpus Christi area.
Date:
June 30, 2016
Creator:
Acuña-Gurrola, Moisés; Wall, James & Medina, Vic
Object Type:
Video
System:
The Portal to Texas History
The Breckenridge American (Breckenridge, Tex.), Vol. 9, No. 204, Ed. 1, Sunday, June 30, 1929
Daily newspaper from Breckenridge, Texas that includes local, state and national news along with extensive advertising.
Date:
June 30, 1929
Creator:
Adair, A. Garland
Object Type:
Newspaper
System:
The Portal to Texas History
Indian Chieftain. (Vinita, Indian Terr.), Vol. 5, No. 42, Ed. 1, Thursday, June 30, 1887
Weekly newspaper from Vinita, Indian Territory. Coverage includes local, territory, and United States news, along with advertising.
Date:
June 30, 1887
Creator:
Adair, John L.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Pawhuska Daily Journal-Capital (Pawhuska, Okla.), Vol. 72, No. 127, Ed. 1 Tuesday, June 30, 1981
Daily newspaper from Pawhuska, Oklahoma that includes local, state, and national news along with advertising.
Date:
June 30, 1981
Creator:
Adams, Bill
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Pawhuska Daily Journal-Capital (Pawhuska, Okla.), Vol. 73, No. 128, Ed. 1 Wednesday, June 30, 1982
Daily newspaper from Pawhuska, Oklahoma that includes local, state, and national news along with advertising.
Date:
June 30, 1982
Creator:
Adams, Bill
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Characterization of Oxy-combustion Impacts in Existing Coal-fired Boilers
This report summarizes Year 1 results of a research program designed to use multi-scale experimental studies and fundamental theoretical models to characterize and predict the impacts of retrofit of existing coal-fired utility boilers for oxy-combustion. Through the course of Year 1 activities, great progress was made toward understanding the issues associated with oxy-combustion retrofit of coal-fired boilers. All four Year 1 milestones and objectives have been, or will be, completed on schedule and within budget. Progress in the four milestone areas may be summarized as follows: • University of Utah has performed size segregated ash composition measurements in the Oxy-Fuel Combustor (OFC). These experiments indicate that oxy-combustion retrofit may impact ash aerosol mineral matter composition. Both flame temperature and flue gas composition have been observed to influence the concentration of calcium, magnesium and iron in the fine particulate. This could in turn impact boiler fouling and slagging. • Sandia National Labs has shown that char oxidation rate is dependent on particle size (for sizes between 60 and 100 microns) by performing fundamental simulations of reacting char particles. These predictions will be verified by making time-resolved optical measurements of char particle temperature, velocity and size in bench-scale experiments before the end …
Date:
June 30, 2009
Creator:
Adams, Bradley; Fry, Andrew; Senior, Constance; Shim, Hong; Wang, Huafeng; Wendt, Jost et al.
Object Type:
Report
System:
The UNT Digital Library
An Analysis of Wind Power Development in the Town of Hull, MA
Over the past three decades the Town of Hull, MA has solidified its place in U.S. wind energy history through its leadership in community-based generation. This is illustrated by its commissioning of the first commercial-scale wind turbine on the Atlantic coastline, the first suburban-sited turbine in the continental United States, pursuit of community-based offshore wind, and its push toward creating an energy independent community. The town's history and demographics are briefly outlined, followed by experience in projects to provide wind power, including pre-construction and feasibility efforts, financial aspects, and market/industry factors.
Date:
June 30, 2013
Creator:
Adams, Christopher
Object Type:
Report
System:
The UNT Digital Library
An Analysis of Wind Power Development in the Town of Hull, MA, Appendix 2: LaCapra Financial Study
The financial analysis and summary results presented in this document represent a first cut at an economic assessment of the proposed Hull Offshore Wind Project. Wind turbine price increases have outpaced the materials and labor price pressures faced by nonrenewable power plant developers due to increased demands on a limited pool of turbine manufacturers and offshore installation companies. Moreover, given the size of the proposed offshore facility, it may be difficult to contract with turbine manufacturers and/or foundation companies given the size and scope of competing worldwide demand. The results described in this report assume that such conditions will not significantly impact the prices that will have to be received from the output of the project; rather, the project size may require as a prerequisite that Hull be able to piggyback on other offshore efforts. The financial estimates provided here necessarily feature a range due to uncertainty in a number of project assumptions as well as overall uncertainty in offshore wind costs. Nevertheless, taken together, the analysis provides a ballpark revenue requirement of approximately $157/MWh for the municipal financing option, with higher estimates possible assuming escalation in costs to levels higher than assumed here.
Date:
June 30, 2013
Creator:
Adams, Christopher
Object Type:
Text
System:
The UNT Digital Library
An Analysis of Wind Power Development in the Town of Hull, MA_Appendix 1_MEPA Certificate
This appendix consists of the CERTIFICATE OF THE SECRETARY OF ENERGY AND ENVIRONMENTAL AFFAIRS ON THE ENVIRONMENTAL NOTIFICATION FORM.
Date:
June 30, 2013
Creator:
Adams, Christopher
Object Type:
Report
System:
The UNT Digital Library
An Analysis of Wind Power Development in the Town of Hull, MA_Appendix 3_LaCapra Update 2012
This presentation covers an objective, market-based, review of the financial assessment of building offshore facilities of 15 or 25 MW.
Date:
June 30, 2013
Creator:
Adams, Christopher
Object Type:
Report
System:
The UNT Digital Library
An Analysis of Wind Power Development in the Town of Hull, MA_Appendix 4_Geophysical Survey Report
CR Environmental, Inc. (CR) was contracted by GZA GeoEnvironmental, Inc. (GZA) to perform hydrographic and geophysical surveys of an approximately 3.35 square mile area off the eastern shore of Hull, Massachusetts. Survey components included: • Single-beam bathymetry; • 100-kHz and 500-kHz side scan sonar; • Magnetometry; and • Low to mid-frequency sub-bottom profiling.
Date:
June 30, 2013
Creator:
Adams, Christopher
Object Type:
Report
System:
The UNT Digital Library
The Harper County Democrat (Buffalo, Okla.), Vol. 10, No. 13, Ed. 1 Friday, June 30, 1916
Weekly newspaper from Buffalo, Oklahoma that includes local, state, and national news along with advertising.
Date:
June 30, 1916
Creator:
Adams, E. Lee
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Reactor Development Program Progress Report: May 1966
Report issued by the Argonne National Laboratory discussing progress made by the Reactor Development Program during May 1966. Reactor physics, experiments, and safety studies are presented. This report includes tables, and illustrations.
Date:
June 30, 1966
Creator:
Adams, R. M. & Glassner, A.
Object Type:
Report
System:
The UNT Digital Library