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in subjects: "Sizing"

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Mechanisms governing fine particulate emissions from coal flames

During this reporting period the global experiments were concluded. The final activities under these experiments involved measuring mineral content of coals as a function of coal particle size. The principal activities during this quarter involved the mechanistic experiments. Three baseline coals were cleaned and two of these sized. The ash from these various cuts were sampled from a bench scale reactor. The ash size distributions were compared to distributions predicted by the breakup model.

Date: October 1, 1989

Creator: Newton, G. H.; Schieber, C.; Socha, R. G.; Clark, W. D. & Kramlich, J. C.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Texasgulf solar cogeneration program. Mid-term topical report

The status of technical activities of the Texasgulf Solar Cogeneration Program at the Comanche Creek Sulfur Mine is described. The program efforts reported focus on preparation of a system specification, selection of a site-specific configuration, conceptual design, and facility performance. Trade-off studies performed to select the site-specific cogeneration facility configuration that would be the basis for the conceptual design efforts are described. Study areas included solar system size, t… more

Date: February 1, 1981

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Fort Hood solar cogeneration facility conceptual design study

A study is done on the application of a tower-focus solar cogeneration facility at the US Fort Hood Army Base in Killeen, Texas. Solar-heated molten salt is to provide the steam for electricity and for room heating, room cooling, and domestic hot water. The proposed solar cogeneration system is expected to save the equivalent of approximately 10,500 barrels of fuel oil per year and to involve low development risks. The site and existing plant are described, including the climate and plant perfo… more

Date: May 1, 1981

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Preliminary design and economic investigations of Diffuser-Augmented Wind Turbines (DAWT)

A preferred design and configuration approach is suggested for the DAWT innovative wind energy conversion system. A preliminary economic asessment is made for limited production rates of units between 5 and 150 kw rated output. Nine point designs are used to arrive at the conclusions regarding best construction material for the diffuser and busbar cost of electricity (COE). It is estimated that for farm and REA cooperative end users, the COE can range between 2 and 3.5 cents/kWh for sites with … more

Date: December 1, 1981

Creator: Foreman, K. M.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

New Orleans full-scale trommel evaluation: interim test report

This report presents the data from five tests of a full-scale trommel processing unsegregated municipal solid waste at throughtputs ranging from 58% to 175% of design capacity, or 32 to 98 Mg/h (36 to 109 tph). The tests were conducted between December 1980 and March 1981 at the Recovery 1 solid waste processing facility in New Orleans, La. Included in the report are a description of the equipment, discussion of the test procedures and primary summaries of data on the trommel mass balance and s… more

Date: June 1, 1981

Creator: Campbell, J.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Solar-thermal central-receiver research study. Interim report

A performance analysis and economic study has been completed of a cavity-type line central receiver and single-axis parabolic cylinder focusing heliostat array for generation of steam for electrical power. A solar thermal power plant was sized to produce 100 MWe at 2:00 p.m. of winter solstice. The system concept is presented. Using the cavity once-through receiver with boiler tubes having an absorptivity of 0.9 and an emissivity of 0.7, it was calculated that total busbar cost in 1976 dollars … more

Date: February 1, 1977

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Conceptual design of a solar cogeneration facility at Pioneer Mill Co. , Ltd

Results are reported of a conceptual design study of the retrofit of a solar central receiver system to an existing cogeneration facility at a Hawaii raw sugar factory. Background information on the site, the existing facility, and the project organization is given. Then the results are presented o the work to select the site specific configuration, including the working fluid, receiver concept, heliostat field site, and the determination of the solar facility size and of the role of thermal st… more

Date: April 1, 1981

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Underwater-cable power-transmission system: bottom segment design

After a survey of the state of the art for bottom cables, some possible configurations are considered for candidate OTEC sites. General considerations on laying and embedding are discussed, and solutions are considered. Optimization of cable dimensions and the problem of flexible joints are covered. The state of the art of cable installation and repair is reviewed and discussed with reference to the representative OTEC sites. Costs for shore terminal stations are evaluated. (LEW)

Date: November 1, 1978

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Photovoltaic subsystem optimization and design tradeoff study. Final report

Tradeoffs and subsystem choices are examined in photovoltaic array subfield design, power-conditioning sizing and selection, roof- and ground-mounted structure installation, energy loss, operating voltage, power conditioning cost, and subfield size. Line- and self-commutated power conditioning options are analyzed to determine the most cost-effective technology in the megawatt power range. Methods for reducing field installation of flat panels and roof mounting of intermediate load centers are … more

Date: March 1, 1982

Creator: Stolte, W. J.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Self-pumping vapor system for hybrid space heating

This paper reports investigations of a passive system that transports heat from a solar collector downward. Refrigerant is evaporated in a collector and the vapor transports heat to one or more condensers located at an arbitrary elevation below the collector. The vapor pressure lifts the condensed liquid to an accumulator located near the top of the collector. The results of annual performance calculations are presented for a space heating application in which one or more condensers are located… more

Date: January 1, 1985

Creator: Neeper, D.A. & Hedstrom, J.C.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Trade-offs in size, quantity and reliability of generalized nuclear power plants: a preliminary assessment

An approximate method is used to estimate the effects of system reliability on optimal nuclear plant size, taking into account also scale factors and manufacturing learning curve slopes. The method is used to estimate the additional effective capability gained by adding units of different sizes to an existing electrical system. The number of additional units proves to be sensitive to forced outrage rate, estimated here from trends in US light-water reactors from 1971 to 1980. The relative cost … more

Date: April 1, 1985

Creator: Hill, D.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Analysis of concentrating PV-T systems for the commercial/industrial sector. Volume III. Technical issues and design guidance

This report provide appropriate guidance for addressing the major technical issues associated with the design and installation of a photovoltaic-thermal (PV-T) system. Nomographs are presented for developing preliminary sizing and costing, and issues associated with specific components and the overall design of the electrical and mechanical system are discussed. SAND82-7157/2 presents a review of current PV-T technology and operating systems and a study of potential PV-T applications. Detailed … more

Date: September 1, 1984

Creator: Schwinkendorf, W.E.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Electric thermal storage demonstration program

In early 1989, MMWEC, a joint action agency comprised of 30 municipal light departments in Massachusetts and on affiliate in Rhode Island, responded to a DOE request to proposal for the Least Cost Utility Planning program. The MMWEC submission was for the development of a program, focused on small rural electric utilities, to promote the use of electric thermal storage heating systems in residential applications. This report discusses the demonstration of ETS equipment at four member light depa… more

Date: January 1, 1992

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Automated microscopy methods for measuring pyritic sulfur content of coal and determining degree of liberation of pyrite in coal: Final report

The objective of this project is to develop an automated procedure, to be implemented in an IBAS image analyzer, to determine size, shape and degree of liberation of pyrite particles in a coal matrix. This procedure is to work in real time conditions and with minimal intervention from the operator. Our approach is to create from the original microscopic image a three level image with the following components: epoxy, coal macerals and pyrite to simplify the calculations. Enhancing the original i… more

Date: July 25, 1987

Creator: Chaparro, L.F.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Commercial bacterial colony counter for semiautomatic track counting

Bacterial colony counters have not been widely used for track counting. However, they do provide an economical alternative to sophisticated optical analyzers for applications that require reproducible track density measurements for large numbers of samples. Simple measurements of size characteristics can be made when there is little need for high resolutions. Such systems are particularly well suited for neutron and alpha dosimetry work, particularly if electrochemical etching or some other tra… more

Date: August 30, 1983

Creator: Griffith, R.V.; McMahon, T.A. & Espinosa, G.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Heat distribution by natural convection

Natural convection between spaces in a building can play a major role in energy transfer. Two situations are investigated: convection through a single doorway into a remote room, and a convective loop in a two-story house with a south sunspace where a north stairway serves as the return path. A doorway-sizing equation is given for the single-door case. Detailed data are given from the monitoring of airflow in one two-story house and summary data are given for five others. Observations on the na… more

Date: January 1, 1983

Creator: Balcomb, J.D. & Yamaguchi, K.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Conservation and solar guidelines

Guidelines are given for selecting R-values and infiltration levels, and determining the size of the solar collection area for passive solar buildings. The guidelines are based on balancing the incremental cost/benefit of conservation and passive solar strategies. Tables are given for 90 cities in the US and the results are also displayed on maps. An example is included.

Date: January 1, 1983

Creator: Balcomb, J. D.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Electric thermal storage demonstration program

In early 1989, MMWEC, a joint action agency comprised of 30 municipal light departments in Massachusetts and one affiliate in Rhode Island, responded to a Department of Energy request to proposal for the Least Cost Utility Planning program. The MMWEC submission was for the development of a program, focused on small rural electric utilities, to promote the use of electric thermal storage heating systems in residential applications. In this progress report, cost savings at Bolyston light departme… more

Date: January 1, 1992

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Photovoltaics for residential applications

Information is given about the parts of a residential photovoltaic system and considerations relevant to photovoltaic power use in homes that are also tied to utility lines. In addition, factors are discussed that influence implementation, including legal and environmental factors such as solar access and building codes, insurance, utility buyback, and system longevity. (LEW)

Date: February 1, 1984

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

User's manual for heat-pump seasonal-performance model (SPM) with selected parametric examples

The Seasonal Performance Model (SPM) was developed to provide an accurate source of seasonal energy consumption and cost predictions for the evaluation of heat pump design options. The program uses steady state heat pump performance data obtained from manufacturers' or Computer Simulation Model runs. The SPM was originally developed in two forms - a cooling model for central air conditioners and heat pumps and a heating model for heat pumps. The original models have undergone many modifications… more

Date: June 30, 1982

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Electric thermal storage demonstration program

Date: February 1, 1992

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Mechanisms governing fine particulate emissions from coal flames. Quarterly technical progress report No. 8, July 1, 1989--September 30, 1989

Date: October 1, 1989

Creator: Newton, G. H.; Schieber, C.; Socha, R. G.; Clark, W. D. & Kramlich, J. C.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Operational readiness review for the Waste Experimental Reduction Facility. Final report

An Operational Readiness Review (ORR) at the Idaho National Engineering Laboratory`s (INEL`s) Waste Experimental Reduction Facility (WERF) was conducted by EG&G Idaho, Inc., to verify the readiness of WERF to resume operations following a shutdown and modification period of more than two years. It is the conclusion of the ORR Team that, pending satisfactory resolution of all pre-startup findings, WERF has achieved readiness to resume unrestricted operations within the approved safety basis. ORR… more

Date: November 1, 1993

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Department of Energy weapons complex sizing study

Contained in the National Defense Authorization Act for FY 1988-89 (H.R. 1748, Section 3133), is a requirement for the President to conduct a study on the nuclear weapons complex for the purpose of determining the overall size and productive capacity necessary to meet national security objectives. Based on the study, the President is directed to formulate a plan to modernize the nuclear weapons complex including actions necessary to ensure operation of facilities in a safe and environmentally a… more

Date: November 2, 1987

Item Type: Report

Partner: UNT Libraries Government Documents Department