Enhancing the use of coals by gas reburning-sorbent injection (open access)

Enhancing the use of coals by gas reburning-sorbent injection

The objective of this project is to demonstrate gas reburning-sorbent injection (GR-SI) emission control technology on three pre-NSPS coal-fired utility boilers in Illinois. The goals are to achieve NO{sub x} and SO{sub x} emission reductions of 60 and 50% respectively. During this quarter, work progressed on all tasks of this project, except for Task 3, Engineering Design, which awaits NEPA approval. The selection of the three primary host sites was confirmed through site characterization and SO{sub x}/NO{sub x} control performance predictions. All three boilers selected (tangentially, wall and cyclone fired units) can meet the NO{sub x} and SO{sub 2} targets of 60% and 50% respectively. Internal and external communications were established and meetings to be held in December were planned. EER continued its dialogue with potential boiler manufacturer subcontractors and electrostatic precipitator specialists. The latter area was necessitated by the need to upgrade ESP performance when using sorbent injection. Process design studies are in progress to achieve the process specifications required for detailed engineering design. In the environmental area, good progress was made in generating Environmental Information Volumes for each site, the Environmental Monitoring Outline and defining the permitting assistance to be provided to the host sites.
Date: December 15, 1987
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Enhancing the use of coals by gas reburning-sorbent injection. Quarterly report No. 2, September 1, 1987--November 30, 1987 (open access)

Enhancing the use of coals by gas reburning-sorbent injection. Quarterly report No. 2, September 1, 1987--November 30, 1987

The objective of this project is to demonstrate gas reburning-sorbent injection (GR-SI) emission control technology on three pre-NSPS coal-fired utility boilers in Illinois. The goals are to achieve NO{sub x} and SO{sub x} emission reductions of 60 and 50% respectively. During this quarter, work progressed on all tasks of this project, except for Task 3, Engineering Design, which awaits NEPA approval. The selection of the three primary host sites was confirmed through site characterization and SO{sub x}/NO{sub x} control performance predictions. All three boilers selected (tangentially, wall and cyclone fired units) can meet the NO{sub x} and SO{sub 2} targets of 60% and 50% respectively. Internal and external communications were established and meetings to be held in December were planned. EER continued its dialogue with potential boiler manufacturer subcontractors and electrostatic precipitator specialists. The latter area was necessitated by the need to upgrade ESP performance when using sorbent injection. Process design studies are in progress to achieve the process specifications required for detailed engineering design. In the environmental area, good progress was made in generating Environmental Information Volumes for each site, the Environmental Monitoring Outline and defining the permitting assistance to be provided to the host sites.
Date: December 15, 1987
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Heavy leptons at the SSC (open access)

Heavy leptons at the SSC

It is argued that detection of heavy leptons at the Superconducting Super Collider seems to be very difficult but perhaps not impossible. The feasibility is shown to depend critically upon the ability to identify events with W's decaying hadronically and missing transverse momentum. (LEW)
Date: December 15, 1987
Creator: Anderson, G. & Hinchliffe, I.
Object Type: Article
System: The UNT Digital Library
Comparisons of power transfer functions and flow transfer functions (open access)

Comparisons of power transfer functions and flow transfer functions

Transfer functions may be used to calculate component feedbacks or temperature increments by convolution of the transfer function with the appropriate fractional change in system-quantity. Power-change transfer functions have been reported. The corresponding flow transfer functions for this case, and comparison with the power transfer functions, are reported here. Results of feedback simulation of ramped flow transients using flow transfer functions are also described.
Date: November 15, 1987
Creator: Grimm, K. N. & Meneghetti, D.
Object Type: Article
System: The UNT Digital Library
Evaluation of the /sup 252/Cf-source-driven neutron noise analysis method for measuring the subcriticality of LWR fuel storage casks (open access)

Evaluation of the /sup 252/Cf-source-driven neutron noise analysis method for measuring the subcriticality of LWR fuel storage casks

The /sup 252/Cf-source-driven neutron noise analysis method was evaluated to determine if it could be used to measure the subcriticality of storage casks of burnt LWR fuel submerged in fuel storage pools, fully loaded and as they are being loaded. The motivation for this evaluation was that measurements of k/sub eff/ would provide the parameter most directly related to the criticality safety of storage cask configurations of LWR fuel and could allow proper credit for fuel burnup without reliance on calculations. This in turn could lead to more cost-effective cask designs. Evaluation of the method for this application was based on (1) experiments already completed at a critical experiments facility using arrays of PWR fuel pins typical of the size of storage cask configurations, (2) the existence of neutron detectors that can function in shipping cask environments, and (3) the ability to construct ionization chambers containing /sup 252/Cf of adequate intensity for these measurements. These three considerations are discussed.
Date: November 15, 1987
Creator: Mihalczo, J.T.
Object Type: Report
System: The UNT Digital Library
Simulated seismic event release fraction data: Progress report, April 1986-April 1987 (open access)

Simulated seismic event release fraction data: Progress report, April 1986-April 1987

The object of this project is to obtain experimental data on the release of airborne particles during seismic events involving plutonium handling facilities. In particular, cans containing plutonium oxide powder may be involved and some of the powder may become airborne. No release fraction data for such scenarios are available and risk assessment calculations for such events lacked specificity describing the physical processes involved. This study has provided initial data based on wind tunnel tests simulating the impact of the debris on simulated cans of plutonium oxide powder. The release fractions are orders of magnitude smaller than previously available estimates. 8 refs., 3 figs., 2 tabs.
Date: November 15, 1987
Creator: Langer, G. & Deitesfeld, C. A.
Object Type: Report
System: The UNT Digital Library
Entrained-Flow Gasification at Elevated Pressure: Volume 1: Final Technical Report, March 1, 1985-April 30,1987 (open access)

Entrained-Flow Gasification at Elevated Pressure: Volume 1: Final Technical Report, March 1, 1985-April 30,1987

The general purpose of this research program was to develop a basic understanding of the physical and chemical processes in entrained coal gasification and to use the results to improve and evaluate an entrained gasification computer model. The first task included the collection and analysis of in-situ gasifier data at elevated pressures with three coal types (North Dakota lignite, Wyoming subbituminous and Illinois bituminous), the design, construction, and testing of new coal/oxygen/steam injectors with a fourth coal type (Utah bituminous), the collection of supporting turbulent fluid dynamic (LDV) data from cold-flow studies, and the investigation of the feasibility of using laser-based (CARS) daignostic instruments to make measurements in coal flames. The second task included improvements to the two-dimensional gasifier submodels, tabulation and evaluation of new coal devolatilization and char oxidation data for predictions, fundamental studies of turbulent particle dispersion, the development of improved numerical methods, and validation of the comprehensive model through comparison of predictions with experimental results. The third task was to transfer technical advances to industry and to METC through technical seminars, production of a detailed data book, code placement, and publication of results. Research results for these three tasks are summarized briefly here and presented in detail …
Date: October 15, 1987
Creator: Hedman, P. O.; Smoot, L. D.; Smith, P. J. & Blackham, A. U.
Object Type: Report
System: The UNT Digital Library
Predictions for nuclear properties along the r-process path (open access)

Predictions for nuclear properties along the r-process path

The uniformity of different nuclear regions as a function of the number of valence protons and neutrons (counted from the nearest closed shell) has been exploited for the parameterization of calculations for nuclei far from stability within the IBA model. Predictions are given for low lying levels, E2 transition rates, and binding energies for nuclei in the r-process path in the A = 150 and A = 190 mass regions. 6 refs., 6 figs.
Date: October 15, 1987
Creator: Aprahamian, A.
Object Type: Article
System: The UNT Digital Library
Quality site seasonal report, Eisenhower Museum, SFBP (Solar in Federal Buildings Program) 4008, March 1985 through September 1985 (open access)

Quality site seasonal report, Eisenhower Museum, SFBP (Solar in Federal Buildings Program) 4008, March 1985 through September 1985

The active solar Domestic Hot Water (DHW) and space heating system at the Eisenhower Museum was designed and constructed as part of the Solar in Federal Buildings Program (SFBP). This retrofitted system is one of eight of the systems in the SFBP slected for quality monitoring. The purpose of this monitoring effort is to document the performance of quality state-of-the-art solar systems in large federal building applications. These systems are unique prototypes. Design errors and system faults discovered during the monitoring period could not always be corrected. Therefore, the aggregate, overall performance is often considerably below what might be expected had similar systems been constructed consecutively with each repetition incorporating corrections and improvements. The solar system is a retrofit, designed to supply part of the space heating (and reheating for humidity control) load at the museum, located at President Eisenhower's boyhood home in Abilene, Kansas. The small DHW load is also served by the solar system. The museum and adjacent library entertain approximately 200,000 visitors per year, and require controlled temperature and humidity for preservation of artifacts. The summer reheating load for humidity control is comparable to the space heating load in winter. The solar system has 110 US Solar …
Date: October 15, 1987
Creator: Raymond, M.G.
Object Type: Report
System: The UNT Digital Library
Quality site seasonal report, Fort Devens Launderette, SFBP (Solar in Federal Buildings Program) 1751, December 1984 through June 1985 (open access)

Quality site seasonal report, Fort Devens Launderette, SFBP (Solar in Federal Buildings Program) 1751, December 1984 through June 1985

The active solar Domestic Hot Water (DHW) system at the Fort Devens Launderette was designed and constructed as part of the Solar in Federal Buildings Program (SFBP). This retrofitted system was one of eight systems selected for quality monitoring. The purpose of this monitoring effort was to document the performance of quality state-of-the-art solar systems in large federal buildings. The launderette is part of the Post Exchange complex at the Fort Devens Army Post in Fort Devens, Massachusetts. The solar system preheats hot water for the coin operated laundry which has an estimated 25,000 customers per year. There are 108 collector panels comprising the 2563-square foot collector array. Collected solar energy is stored in a 3800-gallon tank. Propylene glycol is used to protect the solar array from freezing. Two immersed heat exchangers provide heat transfer from the propylene glycol to directly heat the DHW supply water in the storage tank. Auxiliary energy is supplied by gas and oil boilers. This solar system can be considered one of a kind and as such is a prototype. The lessons learned from building and operating this system should be used to correct design deficiencies and improve the performance of future solar systems for …
Date: October 15, 1987
Creator: Logee, T.L.
Object Type: Report
System: The UNT Digital Library
Quality site seasonal report, Tucson Job Corps Center, SFBP (Solar in Federal Buildings Program) 1751, November 1984 through July 1985 (open access)

Quality site seasonal report, Tucson Job Corps Center, SFBP (Solar in Federal Buildings Program) 1751, November 1984 through July 1985

The active solar Domestic Hot Water (DHW) system at the Tucson Job Corps Center was designed and constructed as part of the Solar in Federal Buildings Program (SFBP). This retrofitted system is one of eight of the systems in the SFBP selected for quality monitoring. The purpose of this monitoring effort is to document the performance of quality state-of-the-art solar systems in large Federal buildings. The systems are unique prototypes. Design errors and system faults discovered during the monitoring period could not always be corrected. Therefore, the aggregated overall performance is often considerably below what might be expected had similar systems been constructed consecutively with each repetition incorporating corrections and improvements. The solar collector system is installed on a two story dormitory at the Job Corps Center. The solar system preheats hot water for about two hundred students. The solar system provided about 50% of the energy needed for water heating in the winter and nearly 100% of the water heating needs in the summer. There are about 70,000 gallons of water used per month. There are seventy-nine L.O.F. panels or 1659 square feet of collectors (1764 square feet before freeze damage occurred) mounted in two rows on the south …
Date: October 15, 1987
Creator: Logee, T.L.
Object Type: Report
System: The UNT Digital Library
Role of turgor pressure and solute transport in plant cell growth: Progress report (open access)

Role of turgor pressure and solute transport in plant cell growth: Progress report

Plant cell expansion requires coordinationion of three distinct processes: wall relaxation and synthesis, water uptake, and solute uptake. Wall relaxation reduces cell turgor pressure and thereby generates the reduced water for water potential needed uptake. Our studies with pea (Pisum sativum L.) and soybean (Glycine max Merr.) seedlings have shown that water uptake is rapid and is not a major control point for growth. Our current focus is on the processes of wall relaxation and solute transport, and how they are influenced by water stress. One major goal of this project is to examine in detail the dependence of wall yielding on turgor pressure. This is being done by detailed measurements of wall relaxation in living cells, using a computer-assisted pressure microprobe and the new pressure-block technique. Our pressure-block results indicate that wall relaxation is more dynamic than expected. Rapid changes in wall yielding appear to compensate for minor fluctuations in cell turgor pressure, thus maintaining stable growth rates. A second major goal of this project is to determine the interrelationship between cell expansion and solute transport into expanding cells. We will selectively block either cell expansion or solute transport, and measure the effect of such blockage on the unblocked …
Date: October 15, 1987
Creator: Cosgrove, D.J.
Object Type: Report
System: The UNT Digital Library
Advanced development of a pressurized ash agglomerating fluidized-bed coal gasification system: Phase 2, Final report, May 1, 1983-July 31, 1984 (open access)

Advanced development of a pressurized ash agglomerating fluidized-bed coal gasification system: Phase 2, Final report, May 1, 1983-July 31, 1984

KRW Energy Systems Inc. is engaged in the development of a pressurized, fluidized-bed, gasification process at its Waltz Mill Site in Madison, Pennsylvania. The overall objective of the program is to demonstrate the viability of the KRW process for the environmentally acceptable production of low- and medium-Btu fuel gas from a variety of fossilized, carbonaceous feedstocks for electrical power generation, substitute natural gas, chemical feedstocks, and industrial fuels. This report covers Phase II of the contract period (May 1, 1983 to July 31, 1984) and is a continuation of the work performed in 1983 and reported in the Phase I final report, FE-19122-30. Included is work performed in fiscal 1983 to 1984 on PDU testing, process analysis, cold flow scaleup facility, process and component engineering and design, and laboratory support studies.
Date: September 15, 1987
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Alleviation of fuselage form drag using vortex flows: Final report (open access)

Alleviation of fuselage form drag using vortex flows: Final report

The concept of using vortex generators to reduce the fuselage form drag of transport aircraft combines the outflow from the plane of symmetry which is induced by the rotational component of the vortex flow with the energization of the boundary layer to reduce the momentum thickness and to delay or eliminate flow separation. This idea was first advanced by the author in 1981. Under a DOE grant, the concept was validated in wind tunnel tests of approximately 1:17 scale models of fuselages of Boeing 747 and Lockheed C-5 aircraft. The search for the minimum drag involved three vortex generator configurations with three sizes of each in six locations clustered in the aft regions of the fuselages at the beginning of the tail upsweep. The local Reynolds number, which is referred to the length of boundary layer run from the nose, was approximately 10{sup 7} so that a fully developed turbulent boundary layer was present. Vortex generator planforms ranged from swept tapered, through swept straight, to swept reverse tapered wings whose semi-spans ranged from 50% to 125% of the local boundary layer thickness. Pitch angles of the vortex generators were varied by inboard actuators under the control of an external proportional …
Date: September 15, 1987
Creator: Wortman, A.
Object Type: Report
System: The UNT Digital Library
Calculation of radial and vertical forces on the CIT 1. 75 m vacuum vessel for several TSC disruption scenarios (open access)

Calculation of radial and vertical forces on the CIT 1. 75 m vacuum vessel for several TSC disruption scenarios

The report consists of viewgraphs. (WRF)
Date: September 15, 1987
Creator: Sayer, R.O.
Object Type: Article
System: The UNT Digital Library
Poloidal magnetics studies on swept divertor and internal coil issues. [Viewgraphs - strike points] (open access)

Poloidal magnetics studies on swept divertor and internal coil issues. [Viewgraphs - strike points]

This paper consists of viewgraphs on swept divertors and internal magnet coils for a Compact Ignition Tokamak design. The author concludes that poloidal field energy and volt-second considerations suggest a swept divertor scenario where the outboard strike point moves from small R to large R, while the inboard strike point moves from small Z to large Z. (LSP)
Date: September 15, 1987
Creator: Strickler, D. J.
Object Type: Article
System: The UNT Digital Library
The stability of free-electron lasers against filamentation (open access)

The stability of free-electron lasers against filamentation

In inertial confinement fusion (ICF) experiments, the high electromagnetic fields propagating through a relatively dense plasma can result in a transverse instability, causing the matter and light to form filaments oriented parallel to the light beam. We examine whether a similar instability exists in the electron beam of a free-electron laser, where such an instability could interfere with the transfer of beam kinetic energy into optical wave energy. We heuristically examine the instability in a relativistic beam through which an intense laser beam is propagating. We ignore the FEL effects. We estimate how the altered index of refraction in an FEL affects the dispersion relation. Finally, we estimate the effect that the instability could have on the phase coherence of a particle as it transits an FEL. 10 refs., 2 tabs.
Date: September 15, 1987
Creator: Barnard, J. J.; Scharlemann, E. T. & Yu, S. S.
Object Type: Article
System: The UNT Digital Library
Dipole strength functions in the actinide mass region (open access)

Dipole strength functions in the actinide mass region

We have calculated a number of neutron- and photon-induced reactions for the actinide nuclei /sup 232/Th, /sup 238/U, and /sup 237/Np. By fitting average resonance capture (ARC) measurements and total neutron capture data, we deduced absolute dipole strength functions for /sup 233/Th and /sup 239/U. We have found that the M1/E1 ratio is the same as in the /sup 176/Lu case, but the total transition strength was larger by about 27%. 17 refs., 4 figs., 1 tab.
Date: July 15, 1987
Creator: Gardner, D. G.; Gardner, M. A. & Hoff, R. W.
Object Type: Article
System: The UNT Digital Library
Summary of Deflections from Fully Assembled EC Structure Finite Element Model (open access)

Summary of Deflections from Fully Assembled EC Structure Finite Element Model

The purpose of this note is to summarize the deflections in the fully assembled EC OH and MH module arrays as calculated by a superelement finite element model. These results are for the case where the OH modules are fully connected at four locations on the inner radius and four locations on the outer radius. Both the OH and MH modules are modeled as skins and endplates (and in the case of OH, internal structural plates) only. The OH module has a skin thickness of 1/16-in. Fig. 1 shows the fully assembled model and the coordinate system used to express deflections. The deflections at the inner and outer radius at both the front (nearest the collision center) and the back of the module assemblies are given in Tables I-IV. A summary of the deflections is given.
Date: July 15, 1987
Creator: Wands, R.
Object Type: Report
System: The UNT Digital Library
Use of the LLNL 40 kV electric gun to study the shock response of 21-6-9 stainless steel (open access)

Use of the LLNL 40 kV electric gun to study the shock response of 21-6-9 stainless steel

Exploding foil-flyer plate (''electric gun'') methods have been used to shock 21-6-9 stainless steel over a wide range of shock pulse amplitudes (20 to 53 GPa) and durations (10 to 70 ns). Dislocation generation and twinning have been studied in recovered specimens with the results providing support for the concept of finite rate plastic processes. 24 refs., 6 figs., 1 tab.
Date: July 15, 1987
Creator: Brusso, J. A.; Mikkola, D. E.; Bloom, G.; Lee, R. S. & Von Holle, W.
Object Type: Article
System: The UNT Digital Library
Economics of Induction Linac Drivers for Radiation Sources (open access)

Economics of Induction Linac Drivers for Radiation Sources

Recent developments in high reliability components for linear induction accelerators (LIA) make possible the use of LIAs as large-scale, economical sources of radio-frequency (rf) power for many applications. One particularly attractive example of interest to high energy physicists is a ''two-beam accelerator'' version of a linear e/sup +/-e/sup -/ collider at TeV energies in which the LIA is configured as a monolithic relativistic klystron operating at 10 to 12 GHz. Another example of keen interest to the fusion community is the use of the LIA to drive a free-electron laser operating at 200 to 500 GHz for use in heating fusion plasma via electron resonance cyclotron heating. This paper briefly describes several potential uses of LIA radiation sources. It discusses the physical basis for scaling our present experience with LIAs to the operating characteristics applicable to large-scale sources of rf power and synchrotron radiation. 14 refs., 6 figs., 1 tab.
Date: June 15, 1987
Creator: Barletta, W. A.
Object Type: Article
System: The UNT Digital Library
Energy spectra of the pneumatically positioned neutron sources at LLNL's Hazards control standards and calibration facility (open access)

Energy spectra of the pneumatically positioned neutron sources at LLNL's Hazards control standards and calibration facility

The Hazards Control Department of Lawrence Livermore National Laboratory maintains a Standards and Calibration Laboratory that includes three neutron sources (two /sup 252/Cf and one /sup 238/PuBe that can be positioned pneumatically for irradiations. Ten moderators exist to modify the neutron energy spectra produced by these sources. The thicknesses and materials of these moderators are: 25-cm water; 5-, 10-, 15-, and 25-cm heavy water; 20-cm aluminum; and 2-, 5-, 10-, and 15-cm polyethylene. We used a multisphere spectrometer to measure the neutron spectra at 2 m from both the PuBe source and the smaller Cf source, with the sources bare, and in all of the moderators. These data were reduced in 25 energy groups ranging from 0.25 eV to 16 MeV. Except for the 15-m polyethylene moderator, we also made measurements using a liquid-scintillator fast-neutron spectrometer. These data were reduced in 0.1-MeV increments from 0.5 to 12.5 MeV. Spectra from the measurements and from independent calculations are presented in tabular and graphic form. Dosimetric values, calculated from both the measured and calculated spectra, are also presented.
Date: June 15, 1987
Creator: Thorngate, J.H.
Object Type: Report
System: The UNT Digital Library
Problems in modeling TF ripple loss of fast alphas from a tokamak reactor (open access)

Problems in modeling TF ripple loss of fast alphas from a tokamak reactor

The report consists of viewgraphs. Topics covered are (1) basic ripple processes, (2) simulations of combined processes, (3) modeling issues, (4) new physics problems, and (5) consequences for ETR/ITER. (WRF)
Date: June 15, 1987
Creator: Hively, L.M.
Object Type: Article
System: The UNT Digital Library
Production of eta mesons in e/sup +/e/sup -/ annihilations at. sqrt. s = 29 GeV (open access)

Production of eta mesons in e/sup +/e/sup -/ annihilations at. sqrt. s = 29 GeV

Data from e/sup +/e/sup -/ annihilations at 29 GeV have been used to measure the production and fragmentation of eta mesons. The signal is observed in the eta ..-->.. ..gamma gamma.. decay channel. The fragmentation function for p/sub eta/ > 1.5 GeV/c agrees well with the shapes predicted by both the Lund and Webber models. However, the mean multiplicity is measured to be < n/sub eta/ > = 0.37 +- 0.08 eta mesons per hadronic annihilation event, which is significantly lower than the values predicted by either model. 6 refs., 2 figs., 1 tab.
Date: June 15, 1987
Creator: Abachi, S.; Akerlof, C.; Baringer, P.; Blockus, D.; Brabson, B.; Brom, J.M. et al.
Object Type: Article
System: The UNT Digital Library