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Fixed tilt solar collector employing reversible vee-trough reflectors and vacuum tube receivers for solar heating and cooling systems. Final report. JPL Publication 77-78

Description: The objective of the Vee-Trough/Vacuum Tube Collector (VTVTC) Project was to prove the usefulness of vee-trough concentrators in improving the efficiency and reducing the cost of collectors assembled from evacuated tube receivers. The VTVTC was analyzed rigorously and various mathematical models were developed to calculate the optical performance of the vee-trough concentrator and the thermal performance of the evacuated tube receiver. A test bed was constructed to verify the mathematical analy… more
Date: December 1, 1977
Creator: Selcuk, M. K.
Partner: UNT Libraries Government Documents Department
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Evaluation and verification of epitaxial process sequence for silicon solar-cell production. Final program summary report

Description: Progress, present status, and data are presented for work in the areas of silicon substrate materials epitaxial substrates and epitaxial growth and of solar cells production process sequence determination especially, and also in the areas of process specification, minimodule design, process and design verification, and cost evaluation and projections. (LEW)
Date: November 1, 1981
Creator: Redfield, D.
Partner: UNT Libraries Government Documents Department
open access

Helical Screw Expander Evaluation Project. Final report

Description: A functional 1-MW geothermal electric power plant that featured a helical screw expander was produced and then tested in Utah in 1978 to 1979 with a demonstrated average performance of approximately 45% machine efficiency over a wide range of test conditions in noncondensing operation on two-phase geothermal fluids. The Project also produced a computer-equipped data system, an instrumentation and control van, and a 1000-kW variable load bank, all integrated into a test array designed for operat… more
Date: March 1, 1982
Creator: McKay, R.
Partner: UNT Libraries Government Documents Department
open access

Development of alternative oxygen production source using a zirconia solid electrolyte membrane

Description: The objective of this multiyear effort was the development, fabrication and testing of a zirconia oxygen production module capable of delivering approximately 100 liters/minute (LPM) of oxygen. The work discussed in this report consists of development and improvement of the zirconia cell along with manufacture of cell components, preliminary design of the final plant, additional economic analysis and industrial participation. (VC)
Date: August 1, 1990
Creator: Suitor, J. W.; Clark, D. J. & Losey, R. W.
Partner: UNT Libraries Government Documents Department
open access

Direct Conversion Technology

Description: The overall objective of the Direct Conversion Technology task is to develop an experimentally verified technology base for promising direct conversion systems that have potential application for energy conservation in the end-use sectors. Initially, two systems were selected for exploratory research and advanced development. These are Alkali Metal Thermal-to-Electric Converter (AMTEC) and Two-Phase Liquid Metal MD Generator (LMMHD). This report describes progress that has been made during the … more
Date: July 1, 1992
Creator: Back, L.H.; Fabris, G. & Ryan, M.A.
Partner: UNT Libraries Government Documents Department
open access

Four absolute cavity radiometer (pyrheliometer) intercomparisons at New River, Arizona: radiometer standards

Description: Four detailed intercomparisons were made for a number of models of cavity-type self-calibrating radiometers (pyrheliometers). Each intercomparison consisted of simultaneous readings of pyrheliometers at 30-second intervals in runs of 10 minutes, with at least 15 runs per intercomparison. Twenty-seven instruments were in at least one intercomparison, and five were in all four. Summarized results and all raw data are provided from the intercomparisons.
Date: July 1, 1981
Creator: Estey, R.S. & Seaman, C.H.
Partner: UNT Libraries Government Documents Department
open access

Assessment of advanced coal-gasification processes. [AVCO high throughput gasification in process; Bell High Mass Flux process; CS-R process; and Exxon Gasification process]

Description: This report represents a technical assessment of the following advanced coal gasification processes: AVCO High Throughput Gasification (HTG) Process, Bell Single - Stage High Mass Flux (HMF) Process, Cities Service/Rockwell (CS/R) Hydrogasification Process, and the Exxon Catalytic Coal Gasification (CCG) Process. Each process is evaluated for its potential to produce SNG from a bituminous coal. In addition to identifying the new technology these processes represent, key similarities/differences… more
Date: June 1, 1981
Creator: McCarthy, J.; Ferrall, J.; Charng, T. & Houseman, J.
Partner: UNT Libraries Government Documents Department
open access

California: basic data for thermal springs and wells as recorded in GEOTHERM. Part A

Description: This GEOTHERM sample file contains 1535 records for California. Three computer-generated indexes give one line summaries of each GEOTHERM record. Each index is sorted by different variables to assist in locating geothermal records describing specific sites. 7 refs. (ACR)
Date: July 1, 1983
Creator: Bliss, J. D.
Partner: UNT Libraries Government Documents Department
open access

Viability study of photo-voltaic systems added to terrestrial electric vehicles

Description: The purpose of the following computer study is to determine the set of necessary conditions under which the addition of photo-voltaic (PV) cells to electric vehicles provides a net utility or economic benefit. Economic benefits are given the primary focus and are evaluated in terms of a payback period.
Date: September 1, 1990
Creator: Rippel, W. E.
Partner: UNT Libraries Government Documents Department
open access

Preliminary Catalog of Earthquakes in Northern Imperial Valley, California, April--June 1977

Description: Seismic monitoring of the northern section of the Imperial Valley region in southern California has been underway since 1973. A description of the 22-station network and a list of preliminary data on earthquakes recorded by the network from April 1977 through June 1977 are presented. (JGB)
Date: January 1, 1977
Creator: Jenkins, D. & Fuis, G.
Partner: UNT Libraries Government Documents Department
open access

Survey of gas-side fouling measuring devices

Description: A survey of measuring devices or probes, which have been used to investigate gas-side fouling, has been carried out. Five different types of measuring devices are identified and discussed including: heat flux meters, mass accumulation probes, optical devices, deposition probes, and acid condensation probes. A total of 32 different probes are described in detail and summarized in matrix or tabular form. The important considerations of combustion gas characterization and deposit analysis are also… more
Date: March 1, 1984
Creator: Marner, W. J. & Henslee, S. P.
Partner: UNT Libraries Government Documents Department
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Development of alternative oxygen production source using a zirconia solid electrolyte membrane. Final report

Description: The objective of this multiyear effort was the development, fabrication and testing of a zirconia oxygen production module capable of delivering approximately 100 liters/minute (LPM) of oxygen. The work discussed in this report consists of development and improvement of the zirconia cell along with manufacture of cell components, preliminary design of the final plant, additional economic analysis and industrial participation. (VC)
Date: August 1, 1990
Creator: Suitor, J. W.; Clark, D. J. & Losey, R. W.
Partner: UNT Libraries Government Documents Department
open access

Direct Conversion Technology. Progress report, January 1, 1992--June 30, 1992

Description: The overall objective of the Direct Conversion Technology task is to develop an experimentally verified technology base for promising direct conversion systems that have potential application for energy conservation in the end-use sectors. Initially, two systems were selected for exploratory research and advanced development. These are Alkali Metal Thermal-to-Electric Converter (AMTEC) and Two-Phase Liquid Metal MD Generator (LMMHD). This report describes progress that has been made during the … more
Date: July 1, 1992
Creator: Back, L. H.; Fabris, G. & Ryan, M. A.
Partner: UNT Libraries Government Documents Department
open access

SP-100 attitude control pathfinder study. Technical information report

Description: This report delineates the scope of Jet Propulsion Laboratory`s FY`83 effort in the attitude control area in support of the SP-100 program. Dynamic modeling of the baseline beam configuration has been conducted and is presented herein. As a first cut, the beam is treated as rigid. Its inherent flexibility is then integrated via the hybrid coordinates method. Using the resulting dynamical equations, a preliminary look at attitude control is taken. Only one axis of rotational one flexible mode ar… more
Date: March 1, 1984
Creator: Eke, F. O.; Graff, S. H.; Laskin, R. A. & Swan, P. A.
Partner: UNT Libraries Government Documents Department
open access

Electron cyclotron resonance deposition of amorphous silicon alloy films and devices

Description: This report describes work to develop a state-of-the-art electron cyclotron resonance (ECR) plasma-enhanced chemical vapor deposition (PECVD) system. The objective was to understand the deposition processes of amorphous silicon (a-Si:H) and related alloys, with a best-effort improvement of optoelectronic material properties and best-effort stabilization of solar cell performance. ECR growth parameters were systematically and extensively investigated; materials characterization included constant… more
Date: October 1, 1992
Creator: Shing, Y. H. (Jet Propulsion Lab., Pasadena, CA (United States))
Partner: UNT Libraries Government Documents Department
open access

Project SAGE: solar assisted gas energy project. Interim report No. 2

Description: A preliminary description is given of Project SAGE, the solar assisted gas energy (SAGE) water heating system currently being tested and evaluated in Southern California. A statement of the goals and objectives of the SAGE water heating program, a general description of the project in addition to system performance data, evaluations and economic analyses of the various pilot studies, and field test installations are presented.
Date: August 1, 1976
Creator: Hirshbert, A.; Barbieri, R.; Bartera, R.; Lingwall, J.; Schoen, R. & Vault, R.
Partner: UNT Libraries Government Documents Department
open access

Brine chemistry: scaling and corrosion. Geothermal research study in the Salton Sea region of California

Description: The purpose of this report is to recommend a reasonable program of brine chemistry research that will result in the development of methods for predicting and controlling scale deposition, and in guidelines for the selection of corrosion-resistant construction materials. First, background information, which is necessary for the understanding of the problems of scaling and corrosion in the Salton Sea KGRA, is presented through a review of the history of geothermal exploration and development in t… more
Date: July 1, 1975
Creator: Hoffmann, Michael R.
Partner: UNT Libraries Government Documents Department
open access

Cost of energy from utility-owned solar electric systems. A required revenue method for ERDA/EPRI evaluations

Description: This methodology calculates the electric energy busbar cost from a utility-owned solar electric system. This approach is applicable to both publicly- and privately-owned utilities. Busbar cost represents the minimum price per unit of energy consistent with producing system-resultant revenues equal to the sum of system-resultant costs. This equality is expressed in present value terms, where the discount rate used reflects the rate of return required on invested capital. Major input variables de… more
Date: June 1, 1976
Partner: UNT Libraries Government Documents Department
open access

Low-Cost Silicon Solar Array Project. Quarterly report 3, October 1976--December 1976

Description: The potential for future widespread use of photovoltaic systems for the generation of electric power was the motivation for the establishment, in January 1975, of the Photovoltaic Conversion Program by ERDA's Division of Solar Energy. The Program's activities are planned to develop and to promote the use of photovoltaic systems to such an extent that the private sector will produce and utilize cost-competitive photovoltaic systems. As part of the ERDA Program, the Low-Cost Silicon Solar Array P… more
Date: January 1, 1976
Partner: UNT Libraries Government Documents Department
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Contingent post-closure plan, hazardous waste management units at selected maintenance facilities, US Army National Training Center, Fort Irwin, California

Description: The National Training Center (NTC) at Fort Irwin, California, is a US Army training installation that provides tactical experience for battalion/task forces and squadrons in a mid- to high-intensity combat scenario. Through joint exercises with US Air Force and other services, the NTC also provides a data source for improvements of training doctrines, organization, and equipment. To meet the training and operational needs of the NTC, several maintenance facilities provide general and direct sup… more
Date: January 1, 1992
Partner: UNT Libraries Government Documents Department
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Hydrogeochemical and Stream-Sediment Survey (NURE): Preliminary Report on the Walker River Basin Study (California/Nevada)

Description: From introduction: The objective of this survey is to develop a geochemical data base for use by the private sector to locate regions of anomalous uranium content. Prior to wide area coverage, several pilot studies are being undertaken to develop and evaluate sampling and analytical techniques. The first of these studies was conducted in the Walker River Basin.
Date: July 1, 1976
Creator: Lawrence Livermore Laboratory
Partner: UNT Libraries Government Documents Department
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Direct conversion technology: Annual summary report CY 1988

Description: The overall objective of the Direct Conversion Technology task is to develop an experimentally verified technology base for promising direct thermal-to-electric energy conversion systems that have potential application for energy conservation in the end-use sectors. This report contains progress of research on the Alkali Metal Thermal-to-Electric Converter (AMTEC), and on the Two-Phase Liquid-Metal MHD Electrical Generator (LMMHD) for the period January 1988 through December 1988. Research on t… more
Date: December 1, 1988
Creator: Massier, P. F.; Bankston, C. P.; Fabris, G. & Kirol, L. D.
Partner: UNT Libraries Government Documents Department
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Energy conservation in citrus processing. Final project report

Description: Alternative energy conserving systems for use in citrus processing plants were synthesized and evaluated in terms of energy savings and economic return. The energy intensive operations that are carried out in citrus processing plants include conveying and extraction, concentration, peel drying, refrigeration, and pasteurization. The alternative energy conserving systems are synthesized from components and subsystems that are arranged to make use of energy cascading and thermodynamic regeneratio… more
Date: November 1, 1981
Creator: Leo, M. A.; Lari, R. I.; Moore, N. R.; Broussard, M. R. & Gyamfi, M.
Partner: UNT Libraries Government Documents Department
open access

System Software and Tools for High Performance Computing Environments: A report on the findings of the Pasadena Workshop, April 14--16, 1992

Description: The Pasadena Workshop on System Software and Tools for High Performance Computing Environments was held at the Jet Propulsion Laboratory from April 14 through April 16, 1992. The workshop was sponsored by a number of Federal agencies committed to the advancement of high performance computing (HPC) both as a means to advance their respective missions and as a national resource to enhance American productivity and competitiveness. Over a hundred experts in related fields from industry, academia, … more
Date: April 1, 1993
Creator: Sterling, T.; Messina, P. & Chen, M.
Partner: UNT Libraries Government Documents Department
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