227 Matching Results

Search Results

open access

Helical Screw Expander Evaluation Project. Final report

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.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Preliminary evaluation of thermal and nonthermal waters at selected sites in Panama, Central America. Evaluacion preliminar de aguas termales y no termales de sitios seleccionados en Panama, Centroamerica

Thirty-one thermal and nonthermal water samples were collected in Panama by the Instituto de Recursos Hidraulicos y Electrificacion and analyzed by the Earth and Space Sciences Division at Los Alamos National Laboratory to evaluate the geothermal potential of four different areas. Chemical and isotopic analyses were performed on each sample. Because samples from several areas were submitted, the chemistry of the samples is varied, with total dissolved solids of thermal fluids ranging from 900 t… more

Date: November 1, 1989

Creator: Shevenell, L.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Soviet precision timekeeping research and technology

This report is the result of a study of Soviet progress in precision timekeeping research and timekeeping capability during the last two decades. The study was conducted by a panel of seven US scientists who have expertise in timekeeping, frequency control, time dissemination, and the direct applications of these disciplines to scientific investigation. The following topics are addressed in this report: generation of time by atomic clocks at the present level of their technology, new and emergi… more

Date: August 1, 1991

Creator: Vessot, R. F. C.; Allan, D. W.; Crampton, S. J. B.; Cutler, L. S.; Kern, R. H.; McCoubrey, A. O. et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Radon levels inside residences in Mexico City

Levels of radon were measured during winter and spring seasons inside 55 colonial and modern houses and 30 multifamily apartment buildings representative of middle and upper income families. The modern houses and apartment buildings in the southern section of the city had average radon levels exceeding 150 Bq m{sup {minus}3} with a maximum single measurement of 458 Bq m{sup {minus}3}. The colonial houses in the central downtown section had radon levels nearly all averaging below 100 Bq m{sup {m… more

Date: January 1, 1989

Creator: Espinoza, G. & Gammage, R. B.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Supporting technology for enhanced oil recovery: Sixth amendment and extension to Annex IV enhanced oil recovery thermal processes

This report contains the results of efforts under the six tasks of the Sixth Amendment and Extension of Annex 4, Enhanced Oil Recovery Thermal Processes of the Venezuela/USA Agreement. The report is presented in sections (for each of the 6 tasks) and each section contains one or more reports prepared by various individuals or groups describing the results of efforts under each of the tasks. A statement of each task, taken from the agreement, is presented on the first page of each section. The t… more

Date: October 1, 1991

Creator: Reid, T.B. (USDOE Bartlesville Project Office, OK (United States)) & Rivas, O. (INTEVEP, Filial de Petroleos de Venezuela, SA, Caracas (Venezuela))

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

The Ahuachapan geothermal field, El Salvador: Exploitation model, performance predictions, economic analysis

The Earth Sciences Division of Lawrence Berkeley Laboratory (LBL) is conducting a reservoir evaluation study of the Ahuachapan geothermal field in El Salvador. This work is being performed in cooperation with the Comision Ejecutiva Hidroelectrica del Rio Lempa (CEL) and the Los Alamos National Laboratory (LANL) with funding from the US Agency for International Development (USAID). This appendix to the report describes the work done during the second year of the study (FY89--90). The first year'… more

Date: May 1, 1991

Creator: Ripperda, M.; Bodvarsson, G.S.; Lippmann, M.J.; Witherspoon, P.A. (Lawrence Berkeley Lab., CA (United States)) & Goranson, C. (Geothermal Consultant Richmond, California (USA))

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Analysis of heavy oils: Method development and application to Cerro Negro heavy petroleum

On March 6, 1980, the US Department of Energy (DOE) and the Ministry of Energy and Mines of Venezuela (MEMV) entered into a joint agreement which included analysis of heavy crude oils from the Venezuelan Orinoco oil belt.The purpose of this report is to present compositional data and describe new analytical methods obtained from work on the Cerro Negro Orinoco belt crude oil since 1980. Most of the chapters focus on the methods rather than the resulting data on Cerro Negro oil, and results from… more

Date: December 1, 1989

Creator: Carbognani, L.; Hazos, M.; Sanchez, V.; Green, J. A.; Green, J. B.; Grigsby, R. D. et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Joint Peru/United States report on Peru/United States cooperative energy assessment. Volume 2. Annex 1

An examination of the energy sources of Peru was undertaken by the USA in collaboration with Peru. First, an introduction establishes the purpose and summarizes results, after which the status of energy supply is presented. The ensuing sections contain the contributions of the participating technical specialists, namely: Peru's hydrocarbon potential, estimated reserves, and projected production rates; coal deposits in Peru; geothermal energy; uranium; miscellaneous energy sources; energy-r… more

Date: August 1, 1979

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Geology of the Platanares Geothermal Site, Departamento De Copan, Honduras, Central America. Field Report

Platanares is located 16 km west of Santa Rosa de Copan, Honduras, along the Quebrada del Agua Caliente. The thermal manifestations are along faults in tuffs, tuffaceous sedimentary rocks, and lavas of the Padre Miguel Group. These tuffs are silicified near the faults, are fractured, and may provide the fracture permeability necessary for the hydrothermal system. Tuffs are overlain by a wedge of terrace gravels up to 60 m thick. Quaternary conglomerates of the Quebrada del Agua Caliente are cem… more

Date: May 1, 1986

Creator: Heiken, G.; Eppler, D.; Wohletz, K.; Flores, W.; Ramos, N. & Ritchie, A.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

The Ahuachapan geothermal field, El Salvador: Reservoir analysis

These are appendices F through I of the Ahuachapan Geothermal Field Reservoir Analysis. The volume contains: well logs, water chemistry plots, gas chemistry plots, temperature plots, and flow plots. (JEF)

Date: August 1, 1989

Creator: Aunzo, Z.; Bodvarsson, G.S.; Laky, C.; Lippmann, M.J.; Steingrimsson, B.; Truesdell, A.H. et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Joint Peru/United States report on Peru/United States cooperative energy assessment. Volume 1. Executive summary, main report and appendices

In 1978, the US and Peru conducted a comprehensive assessment of Peru's energy resources, needs, and uses and developed several alternative energy strategies that utilize the available resources to meet their energy requirements. This Volume I reports the findings of the assessment and contains the executive summary, the main report, and five appendices of information that support the integrated energy supply and demand analysis. The following chapters are included: The Energy Situation in… more

Date: August 1, 1979

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Effect of vegetation on air quality: the value of forest vegetation as a filter for industrial sources of air pollutants

A general model that can be used to estimate the deposition of gaseous pollutants by forests is made with described. Then the model is used to estimate the deposition of fluoride as hydrogen fluoride (HF) around an aluminum refinery. A comparison of spatial and temporal concentration patterns is made with data collected around the ALUAR plant in Puerto Madryn, Argentina. Finally, the area of forest needed to remove a significant portion of the fluoride from the atmosphere is estimated.

Date: January 1, 1980

Creator: Murphy, C. E. Jr. & Ares, J. O.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Mexico City air quality research initiative: An overview and some statistical aspects

The Mexican Petroleum Institute (Institute Mexicano del Petroleo, IMP) and Los Alamos National Laboratory (LANL) are in the first year of a three-year jointly funded project to examine the air quality in Mexico City and to provide techniques to evaluate the impact of proposed mitigation options. The technical tasks include modeling and simulation; monitoring and characterization; and strategic evaluation. Extensive measurements of the atmosphere, climate, and meteorology are being made as part … more

Date: January 1, 1991

Creator: Waller, R. A.; Streit, G. E. (Los Alamos National Lab., NM (United States)) & Guzman, F. (Instituto Mexicano de Petroleo, Mexico City (Mexico))

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Conservation potential of compact fluorescent lamps in India and Brazil

We evaluate the conservation potential of compact fluorescent lamps (CFLs) for managing the rapidly increasing electrical energy and peak demand in India and Brazil. Using very conservative assumptions, we find that the cost of conserved energy using 16 W CFLs is 4 and 6 times less than the long range marginal cost of electricity for the two countries. The cost of avoided peak installed capacity is 6 and 9.5 times less than the cost of new installed capacity for India and Brazil. The analysis i… more

Date: July 1, 1989

Creator: Gadgil, A.; Martino Jannuzzi, G. de (Lawrence Berkeley Lab., CA (USA) & Universidade Estadual de Campinas, SP (Brazil). Faculdade de Engenharia)

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

The Ahuachapan geothermal field, El Salvador: Reservoir analysis

These are appendices A thru E of the Ahuachapan geothermal field reservoir analysis. The volume contains: mineralogy contours, ionic chlorine and silicon dioxide contours, well summaries, and temperature and pressure effects. (JEF)

Date: August 1, 1989

Creator: Aunzo, Z.; Bodvarsson, G.S.; Laky, C.; Lippmann, M.J.; Steingrimsson, B.; Truesdell, A.H. et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Energy in Mexico: a profile of solar energy activity in its national context

The geopolitical, economic, and cultural aspects of the United States of Mexico are presented. Mexico's energy profile includes the following: energy policy objectives, government energy structure, organizations for implementation, indigeneous energy sources, imported energy sources, solar energy research and development, solar energy organizations and solar energy related legislation and administrative policies. International agreements, contacts, manufacturers, and projects are listed. (MRH)

Date: April 1, 1980

Creator: Hawkins, D.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Ocean thermal energy conversion cold water pipe preliminary design project. Task 2. Analysis for concept selection

The successful performance of the CWP is of crucial importance to the overall OTEC system; the pipe itself is considered the most critical part of the entire operation. Because of the importance the CWP, a project for the analysis and design of CWP's was begun in the fall of 1978. The goals of this project were to study a variety of concepts for delivering cold water to an OTEC plant, to analyze and rank these concepts based on their relative cost and risk, and to develop preliminary desig… more

Date: April 1, 1979

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Joint Peru/United States report on Peru/United States cooperative energy assessment. Volume 3. Annexes 2-7

This report presents the results of a brief study of industral, mining, and agricultural sector energy demands in Peru. The study establishes current energy demands and sectoral activities, and projects future energy needs through the year 2000. With respect to energy demands, the subsectors covered are: mining and non-ferrous metals, iron and steel, cement, oil refining, petrochemicals, fertilizers, and agriculture (major crops). Total energy demands for these subsectors are developed for 1976… more

Date: August 1, 1979

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

The Direct Application of Geothermal Energy to Provide Process Heat in Guatemala

One part of an energy and resource development program in Central America is a geothermal process heat project in Guatemala. The feasibility of the direct heat application depends upon the production characteristics and reliability of the geothermal source. Other factors are the distance from the heat source, quantity of use, and capacity factor of the use facilities. Favorable conditions would be distances of under 5 km, heat requirements approximately equal to the well capacity, and high capa… more

Date: September 1, 1987

Creator: Altseimer, John H. & Edeskuty, Frederick J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Results of investigations at the Zunil geothermal field, Guatemala: Well logging and brine geochemistry

The well logging team from Los Alamos and its counterpart from Central America were tasked to investigate the condition of four producing geothermal wells in the Zunil Geothermal Field. The information obtained would be used to help evaluate the Zunil geothermal reservoir in terms of possible additional drilling and future power plant design. The field activities focused on downhole measurements in four production wells (ZCQ-3, ZCQ-4, ZCQ-5, and ZCQ-6). The teams took measurements of the wells … more

Date: July 1, 1991

Creator: Adams, A.; Dennis, B.; Van Eeckhout, E.; Goff, F.; Lawton, R.; Trujillo, P.E. et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Joint Peru/United States report on Peru/United States cooperative energy assessment. Volume 4 of 4 Volumes Annexes 8-11

A comprehensive assessment of the biofuel potential of Peru is presented. Topics discussed cover current biofuel utilization practices; evaluation of Peruvian biomass productivity; identification of Peruvian agricultural and forestry resources; assessment of resource development and management concerns; identification of market considerations; description of biofuel technological options; and regional identification of biofuel technology applications. The discussion of current biofuel utilizati… more

Date: August 1, 1979

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Framework for energy policy and technology assessment in developing countries: a case study of Peru

The potential of various energy sources and technology options in meeting national economic and social development goals in developing countries is assessed. The resource options that are of interest are the development of indigenous resources. In general, two categories of options can be considered: those which correspond to the accelerated implementation of existing elements of the energy system and those which correspond to the introduction of a new technology, such as solar electricity. The… more

Date: December 1, 1979

Creator: Mubayi, V.; Palmedo, P.F. & Doernberg, A.B.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

The Ahuachapan Geothermal Field, El Salvador: Reservoir Analysis

The Earth Sciences Division of Lawrence Berkeley Laboratory (LBL) is conducting a reservoir evaluation study of the Ahuachapan geothermal field in El Salvador. This work is being performed in cooperation with the Comision Ejecutiva Hidroelectrica del Rio Lempa (CEL) and the Los Alamos National Laboratory (LANL). This report describes the work done during the first year of the study (FY 1988--89), and includes the (1) development of geological and conceptual models of the field, (2) evaluation o… more

Date: August 1, 1989

Creator: Aunzo, Z.; Bodvarsson, G. S.; Laky, C.; Lippmann, M. J.; Steingrimsson, B.; Truesdell, A. H. et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

A Comparison of Economic Development in Latin America, Middle Eastern Europe and Asia in the 1990s

The 1990s were characterized by severe turbulence in the global economy. Economic and financial crises occurred in Latin America, Middle and Eastern Europe and Asia. This analysis distinguishes between the two socioeconomic criteria "transitional" and "emerging" region. Transitional countries are former centrally planned socialist economies and emerging countries former agricultural-oriented classical developing economies with mostly a history of military or some other kind of autocratic dictat… more

Date: May 1999

Creator: Marktanner, Marcus

Item Type: Thesis or Dissertation

Partner: UNT Libraries