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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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At least 181 records · Page 10
All sourcesNASA NTRSDOE OSTI
DOE OSTI2012

Water Resource Assessment of Geothermal Resources and Water Use in Geopressured Geothermal Systems (Rev.1)

With a potential threefold increase in geothermal electricity generation by 2035, geothermal energy is increasingly recognized for its potential to reduce carbon emissions (EIA 2011a). Energy and environmental analyses are critical to developing a robust set of geothermal energy technologies that meet future demand. Previous work has summarized what is currently known about the life-cycle freshwater requirements of geothermal power-generating systems and the water quality of geothermal waters. This report builds upon that work, presenting an assessment of freshwater demand for future growth in utility-scale geothermal power generation and an analysis of freshwater use in low-temperature geopressured geothermal power generation systems. This is part of a larger effort to compare the life-cycle impacts of geothermal electricity generation with other power generation technologies. This report is organized with an introduction followed by two primary analysis sections. The introduction gives the background of the project and its purpose and summarizes the geothermal electricity generation technologies evaluated in this study. These technologies include conventional hydrothermal flash and binary systems, enhanced geothermal systems (EGS), and geopressured geothermal systems.

15 GEOTHERMAL ENERGY↗
NASA NTRS1971

Methodologies for optimal resource allocation to the national space program and new space utilizations. Volume 2: Resource allocation and smoothing model, programmer's manual

Appendixes are presented that provide model input requirements, a sample case, flow charts, and a program listing. At the beginning of each appendix, descriptive details and technical comments are provided to indicate any special instructions applicable to the use of that appendix. In addition, the program listing includes comment cards that state the purpose of each subroutine in the complete program and describe operations performed within that subroutine. The input requirements includes details on the many options that adapt the program to the specific needs of the analyst for a particular problem.

Source record↗
NASA NTRS1972

The earth resources experiment package on Skylab and proposed resource investigations.

In late 1973, NASA plans to launch a three-man experimental space station, the Skylab Workshop. Technical specifications regarding the instrumental facilities of the space station are presented, giving attention to the multispectral photographic facility, the IR spectrometer, the multispectral scanner, the L-band radiometer, and the S-193 sensor. The S-193 sensor will provide data applicable to studying varying ocean surfaces, wave conditions, sea and lake ice, ocean clouds, weather prediction, and soil types. All data from the sensors will be recorded on film and analog magnetic tape for return at the end of each manned period of Skylab.

Park, A. B.↗
NASA NTRS1974

Kansas environmental and resource study: A Great Plains model. Monitoring fresh water resources

The author has identified the following significant results. Processing and analysis of CCT's for numerous ground truth supported passes over Kansas reservoirs has demonstrated that sun angle and atmospheric conditions are strong influences on water reflectance levels as detected by ERTS-1 and can suppress the contributions of true water quality factors. Band ratios, on the other hand, exhibit very little dependence on sun angle and sky conditions and thus are more directly related to water quality. Band ratio levels can be used to reliably determine suspended load. Other water quality indicators appear to have little or no affect on reflectance levels.

Yarger, H. L.↗