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Diffusion of Slow Electrons in Gases

Description: The properties of electrons in a gas and an external electric field, e.g., agitation velocity, free path, energy lost per collision, and collision cross sections, were determined for electrons of energy less than 2 ev in a large number of gases. The computations were made from previously measured values for Townsend's energy factor or the ratio of electron agitation energy to molecule thermal energy. Results are presented for hydrogen, nitrogen, carbon dioxide, methane, ethylene, cyclopropane, … more
Date: October 24, 1961
Creator: Forester, D. W. & Cochran, L. W.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
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Propane Vibrational Analysis

Description: Using the group vibratibn method of McMurry, the normal frequencies and coordinates of propane and three of its symmetrical deuterium substituted compounds were obtained. The force constants used were taken from a variety of previous works on hydrocarbons. The results give reasonable agreements with the experimental frequency and mode assignments of others. (auth)
Date: June 12, 1962
Creator: Marshall, G. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Catalyst and process development for the H/sub 2/ preparation from future fuel cell feedstocks. Quarterly progress report, October 1, 1978-December 31, 1978

Description: The work done under this contract in the last quarter of 1978 was concerned with Phase I, which involved preliminary catalyst and process evaluation. The processes under study are hydrogen assisted steam reforming (HASR), catalytic partial oxidation (CPO), and autothermal steam reforming (ATR). Existing Engelhard test units were modified to carry out preliminary runs using the first two processes. Technical analysis to support work in this area consisted of heat and material balances constraine… more
Date: January 1, 1979
Creator: Yarrington, R M; Feins, I R; Hwang, H S & Mayer, C P
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Durability testing at one atmosphere of advanced catalysts and catalyst supports for automotive gas turbine engine combustors. Part 1

Description: Studies were conducted to experimentally demonstrate the durability catalysts and catalyst supports in a combustion environment. A test of 1000 hours duration was completed with two catalysts, using No. 2 diesel fuel and operating at catalytically supported thermal combustion conditions. This atmospheric pressure durability test was conducted, using an air preheat temperature of about 640/sup 0/K and a reference velocity of about 14 meters/second. The adiabatic flame temperature of the fuel/air… more
Date: June 1, 1977
Creator: Heck, R.M.; Chang, M.; Hess, H. & Carrubba, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

HC quench layer formation in combustion processes. Technical progress report, January-April 1980

Description: The project is aimed at understanding wall quenching and other processes responsible for surface generated hydrocarbons in combustion under engine-like conditions. The study concerns the effects of turbulence on the evolution of hydrocarbons. At the conclusion of the program, significant new experimental information will have been generated and an analytical model of the fluid mechanics and some aspects of the chemistry of quenching will be formulated. The work is divided into three tasks: (1) … more
Date: June 1, 1980
Creator: Lavoie, G. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Analyses of mixed-hydrocarbon binary thermodynamic cycles for moderate-temperature geothermal resources using regeneration techniques

Description: Studies of basic binary geothermal cycles utilizing mixtures of hydrocarbons have shown better performance than for pure fluids for a moderate temperature (360/sup 0/F) resource. However, a loss is net geofluid effectiveness (watt-hours net plant output/1bm geofluid) results when the geofluid outlet temperature is limited to temperatures in excess of 160/sup 0/F to alleviate a silica precipitation problem. This study examined three working fluids consisting of binary mixtures of hydrocarbons to… more
Date: December 1, 1981
Creator: Demuth, O. J. & Kochan, R. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Energy emergency planning guide: Winter 1977-78

Description: This Energy Emergency Planning Guide for Winter, 1977-78 has been prepared in order to: identify and evaluate actions available to deal with energy emergencies this winter; provide an advance indication to the public of those actions considered most likely to be taken by the government, and provide industry, state, and local governments with suggestions about actions which they can take to deal with energy emergencies. The Guide contains specifications for over 50 standby programs and procedure… more
Date: November 1, 1977
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Multifuel reformer R D

Description: The on-board fuel for fuel cell powered vehicles may be one or more of hydrogen, methanol, ethanol, natural gas, propane, or other liquified petroleum gases. To use hydrogen as the fuel, suitable means of storing, and subsequently delivering, adequate quantities of the gas must be developed. For all other fuels suitable reformers must be developed to convert the fuel to hydrogen or a hydrogen-rich gas mixture at rates corresponding to the varying power demand rates of the automotive system; thi… more
Date: January 1, 1991
Creator: Kumar, R. & Ahmed, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Geothermal heating facilities for Frontier Inn, Susanville, California

Description: The Frontier Inn, located in Susanville, California, is a 38 unit motel composed of six major sections (coffee shop, A frame units, apartments, back units, two story units and office). These sections were built over a number of years and exhibit widely varying types of construction. Space heating is provided by primarily electric resistance equipment with some propane use. Domestic hot water is provided primarily by propane with some electric resistance. The coffee shop uses fuel oil for both s… more
Date: March 1, 1982
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Sulfur-isotope separation by distillation

Description: Sulfur-isotope separation by low-temperature distillation of hydrogen sulfide was studied in an 8-m, 25-mm diameter distillation column. Column temperature was controlled by a propane-propylene heat pipe. Column packing HETP was measured using nitric oxide in the column. The column was operated at pressures from 45 to 125 kPa. The relative volatility of S-32 vs. S-34 varied from 1.0008 to 1.0014.
Date: January 1, 1982
Creator: Mills, T.R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Variable pressure supercritical Rankine cycle for integrated natural gas and power production from the geopressured geothermal resource

Description: A small-scale power plant cycle that utilizes both a variable pressure vaporizer (heater) and a floating pressure (and temperature) air-cooled condenser is described. Further, it defends this choice on the basis of classical thermodynamics and minimum capital cost by supporting these conclusions with actual comparative examples. The application suggested is for the geopressured geothermal resource. The arguments cited in this application apply to any process (petrochemical, nuclear, etc.) invol… more
Date: March 1, 1982
Creator: Goldsberry, F.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Overview of recent supercritical binary geothermal cycle experiments from the Heat Cycle Research Program

Description: The Heat Cycle Research Program, which is being conducted for the Department of Energy, has as its objective the development of the technology for effecting improved utilization of moderate temperature geothermal resources. Testing at the Heat Cycle Research Facility located at the DOE Geothermal Test Facility East Mesa, California involves supercritical vaporization and counterflow in-tube condensing in an organic Rankine cycle. Results of the experiments are given for both pure and mixed-hydr… more
Date: January 1, 1986
Creator: Demuth, O.J.; Bliem, C.J.; Mines, G.L. & Swank, W.D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Costs of using crop residues in direct combustion applications

Description: The economic feasibility of burning crop residues for on-farm grain drying, grain drying at a grain elevator, and electricity generation at a utility are examined. Following dramatic price increases for petroleum during 1979, grain drying is the most economically attractive alternative studied. For on-farm applications, a typical 400-acre grain harvest would consume nearly 5,500 gallons of propane to dry 52,000 bushels of corn from 22% moisture content wet basis (MCWB) to 15% MCWB. Fuel savings… more
Date: March 1, 1980
Creator: Flaim, S. & Urban, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Super critical fluid extraction of a crude oil bitumen-derived liquid and bitumen by carbon dioxide and propane

Description: Supercritical fluid extraction of complex hydrocarbon mixtures is important in separation processes, petroleum upgrading and enhanced oil recovery. In this study, a paraffinic crude oil, a bitumen- derived liquid and bitumen were extracted at several temperatures and pressures with carbon dioxide and propane to assess the effect of the size and type of compounds that makeup the feedstock on the extraction process. It was observed that the pure solvent density at the extraction conditions was no… more
Date: January 1, 1991
Creator: Deo, M. D.; Hwang, J. & Hanson, F. V.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Nuclear Fuel Research Fuel Cycle Development Program Quarterly Progress Report, October 1-December 31, 1961

Description: The irradiation testing program involving enriched UO/sub 2/ capsules fabricated by low-temperature sintering was continued. Flux monitor data indicate an average burnup level in the capsule of 5800 Mwd/t compared with 9100 Mwd/t calculated. Preparation of 5 different high-purity UC irradiation test specimens of 12% enrichment is reported. Bescriptions of UC preparation procedures by the propane reaction and by skull melting are included. (J.R.D.)
Date: February 1, 1962
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Analyses of mixed hydrocarbon binary thermodynamic cycles for moderate temperature geothermal resources

Description: A number of binary geothermal cycles utilizing mixed hydrocarbon working fluids were analyzed with the overall objective of finding a working fluid which can produce low-cost electrical energy using a moderately low temperature geothermal resource. Both boiling and supercritical shell-and-tube cycles were considered. The performance of a dual-boiling isobutane cycle supplied by a 280/sup 0/F hydrothermal resource (corresponding to the 5MW pilot plant at the Raft River site in Idaho) was selecte… more
Date: January 1, 1981
Creator: Demuth, O.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Experimental study of flame propagation in semiconfined geometries with obstacles

Description: Accidents in which large quantities of liquefied natural gas (LNG) or other combustible materials are spilled can potentially lead to disastrous consequences, especially if the dispersing combustible cloud finds a suitable ignition source. So far, very little is known about the detailed behavior of a large burning cloud. Full-scale experiments are economically prohibitive, and therefore one must rely on laboratory and field experiments of smaller size, scaling up the results to make predictions… more
Date: February 8, 1982
Creator: Urtiew, P.A.; Brandeis, J. & Hogan, W.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Performance of the thermodynamic properties models in ASPEN. [Freon 12 and Freon 22]

Description: In the course of performing a number of analyses using ASPEN, the performance of the ASPEN models for computing thermodynamic properties has been observed. Pure-component properties for propane, isobutane, Freon 12 and Freon 22 and mixture properties for the propane-isobutane and the ethanol-water systems have been computed and the results compared with available data sources and with independent sources of computed properties. The built-in data regression system (DRS) of ASPEN was used to regr… more
Date: January 1, 1982
Creator: Fish, L.W. & Evans, D.R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Performance and emissions of a catalytic reactor with propane, diesel, and Jet A fuels

Description: As part of the ERDA-funded Gas Turbine Highway Vehicle Systems project, tests were made to determine the performance and emissions of a catalytic reactor operated with propane, No. 2 diesel, and Jet A fuels. A 12-cm diameter and 16-cm long catalytic reactor using a proprietary noble metal catalyst was operated at an inlet temperature of 800 K, a pressure of 3 x 10/sup 5/ Pa and reference velocities of 10 to 15 m/s. No significant differences between the performance of the three fuels were obser… more
Date: January 1, 1977
Creator: Anderson, D. N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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