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Executive summary of an energy study of the marine transportation industry. Volume I. Draft final report

Description: The conclusions and recommendations resulting from an examination of energy use in the marine transportation industry are presented. The methodology used is discussed. Specific information is discussed concerning energy consumption and productivity in these sectors: foreign trade; Great Lakes; inland waterways; coastal; offshore; pleasure craft; and fishing and miscellaneous. Based on the energy savings potentials calculated, the programs relating to slow speed diesels, diesel bottoming cycles, and hull maintenance and smoothing are recommended for funding in FY1978. Three high risk program areas that should be evaluated in the future are identified as: adiabatic diesels, Naval Academy heat balance engine, and closed cycle gas turbines. (MCW)
Date: August 17, 1977
Partner: UNT Libraries Government Documents Department

Investigations on the use of anodic stripping voltammetry for the analyses of lead in saline environments

Description: Research is reported directed to modification of the anodic stripping voltammetry (ASV) analytic method in order to acquire data for lead from ambient sea water conditions, and development of a chemical model which uses these data to identify inorganic lead species for saline environments. Laboratory and field samples were analyzed for lead partitioning in: (a) KCl electrolyte solutions; (b) I.A.P.S.O. Standard Sea Water; (c) seawater samples from Quatsino Sound, British Columbia; (d) a series of seawater samples from San Francisco Bay; and (e) seawater samples from the Gulf of Mexico. The electrochemical traits of the lead species and the ASV oxidation potential expression are the fundamental constituents of the chemical model. The model uses the data from the analyses to provide the mass balance relationships for lead partitioned among the major anions in seawater. The laboratory analyses of KCl electrolyte and Standard Seawater give the following results. The modified ASV method and chemical model provide information on ambient labile and non-labile inorganic lead complexes in these saline solutions down to the parts-per-billion level. No purge and the simple electrodes cause some erratic behavior and spurious potentials, but the data are reproducible. In addition to Pb/sup 2 +/, the most dominant measured lead species in order include PbCO/sub 3//sup 0/, PbSO/sub 4//sup 0/, PbCl/sup +/, and Pb(NO/sub 3/)/sub 2//sup 0/ from the lead additions solution. The analyses of the field samples give the following results. Samples were taken from the partially anoxic basin in Quatsino Sound, British Columbia with one successful analysis which is for somewhat normal dissolved oxygen conditions. Data show that lead is partitioned among Pb/sup 2 +/, Pb(OH)/sub 2//sup 0/, PbCO/sub 3//sup 0/, and PbSO/sub 4//sup 0/. The analyses with purge for the San Francisco Bay water partitions lead among Pb/sup 2 +/, PbCO/sub 3//sup 0/, PbSO/sub 4//sup ...
Date: August 1, 1978
Creator: Case, C.W.
Partner: UNT Libraries Government Documents Department

Technology development for high-salinity geothermal resources

Description: An impulse turbine for Total Flow utilization of geothermal fluids was tested. Performance measurements verify the calculational model. The research goal of 70% engine efficiency remains credible. Addition of acid to the brine prevents scaling and precipitation at moderate costs. Corrosion and erosion of turbine materials for the Total Flow Process are not severe. (JB)
Date: August 5, 1977
Creator: Lundberg, A.W.
Partner: UNT Libraries Government Documents Department

Executive summary of an energy study on the marine transportation industry. Volume 1. Draft final report

Description: The conclusions and recommendations resulting from an examination of energy use in the marine transportation industry are presented. Four tasks covered in the study include an industry summary, regulations and tariffs, efficiency improvements, and the future of the industry. The methodology used in the study is described. Specific recommendations are made concerning research and development actions that appear to offer the greatest conservation potential. Three high risk areas are identified that should be reevaluated in the future. (MCW)
Date: August 17, 1977
Partner: UNT Libraries Government Documents Department

Energy use in the marine transportation industry. Task IV. Industry future. Draft report

Description: Future industry scenarios for energy consumption in the marine transport industry are projected and the energy savings potential of the research and development program identified in Task III (Efficiency Improvements) against these scenarios is evaluated. The introduction is contained in Chapter I. In Chapter II, the operational, regulatory, and vessel size scenarios for the year 2000 are developed. In Chapter III, future cargo flows and expected levels of energy use for the baseline 2000 projection are determined. In Chapter IV, the research and development programs are introduced into the future US flag fleet and the energy savings potential associated with each is determined. (MCW)
Date: August 18, 1977
Partner: UNT Libraries Government Documents Department

Thermal depletion of a geothermal reservoir with both fracture and pore permeability

Description: A method for estimating the useful lifetime of a reservoir in porous rock where the injection and production wells intersect a fracture system is presented. Equations were derived for the pore-fluid and fracture-fluid temperatures averaged over large regions of the geothermal field. Problems such as incomplete areal sweep and interfingering of cool and hot fluids are ignored. Approximate equations relating average temperatures to the heat flowing from rock to fluid were developed, and their use is justified by comparing the results with solutions of the exact equations. The equations for the temperature decline can be solved quickly. In the model, fractures are characterized by three parameters: aperture w, permeability k/sub fr/, and spacings between fractures D. For certain values of these parameters, cool reinjected fluid in fractures may reach the production wells long before all the warm pore fluid has been tapped, shortening the useful lifetime of the field. The traditional (and important) problems of reservoir engineering, flow rate determination, drawdown, sweep patterns, etc. were ignored. Thus the results are most useful in providing a correction factor which can be applied to lifetime estimates obtained from a detailed simulation of a field assuming porous rock. That correction factor is plotted for clean fractures (k/sub fr/ = w/sup 2//12) as a function of w and D for several lifetime ranges. Small-scale fractures seen in cores from the Salton Sea Geothermal Field are too closely spaced to reduce lifetime estimates. However, large-scale fault systems exist within that field, and they are attractive drilling targets because they produce large flow rates. If large scale faults communicate between injection and production wells, they may reduce the useful lifetime of those wells.
Date: August 10, 1976
Creator: Kasameyer, P.W. & Schroeder, R.C.
Partner: UNT Libraries Government Documents Department

[News Clip: Turtle]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: August 8, 1979, 5:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections

Assessment of subsurface salt water disposal experience on the Texas and Louisiana Gulf Coast for applications to disposal of salt water from geopressured geothermal wells

Description: A representative cross section of the literature on the disposal of geothermal brine was perused and some of the general information and concepts is summarized. The following sections are included: disposal statistics--Texas Railroad Commission; disposal statistics--Louisiana Office of Conservation; policies for administering salt water disposal operations; salt water disposal experience of Gulf Coast operators; and Federal Strategic Petroleum Reserve Program's brine disposal operations. The literature cited is listed in the appended list of references. Additional literature is listed in the bibliography. (MHR)
Date: August 4, 1978
Creator: Knutson, C.K. & Boardman, C.R.
Partner: UNT Libraries Government Documents Department

Study of core chips from the State of California, Well No. 1 in the Salton Sea Geothermal Field using petrographic, x-ray diffraction, and scanning electron microscopy techniques

Description: Rock chips from depths of 1380 to 1478 m from the State of California Well No. 1 in the Salton Sea Geothermal Field were examined using conventional petrographic, x-ray diffraction, and scanning electron microscopy techniques. Mineral composition, pore configuration and the nature of the fine-grained matrix materials were determined.
Date: August 13, 1976
Creator: Dengler, L. & Piwinskii, A. J.
Partner: UNT Libraries Government Documents Department

Description of Imperial Valley, California for the assessment of impacts of geothermal energy development

Description: Impending geothermal development in the Imperial Valley of California has raised concern over the possible impacts of such development. As an initial step in impact assessment of geothermal projects, relevant features of the valley's physical and human environments are described. Particular attention is placed on features that may either influence development or be affected by it. Major areas of consideration include the valley's physical resources (i.e., land, air, water, and biological resources), economic, fiscal, and social characteristics of Imperial County, and geothermal laws.
Date: August 26, 1976
Creator: Layton, D. & Ermak, D.
Partner: UNT Libraries Government Documents Department