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Conceptual design and systems analysis of photovoltaic systems. Volume I. Study summary. Final report

Description: This investigation of terrestrial PV systems considered the technical and economic feasibility for systems in three size categories: a small system of about 12 kW peak output for on-site residential use; a large 1500 MW central power plant contributing to the bulk energy of a utility system power grid; and an intermediate size system of about 250 kW for use on public or commercial buildings. In each category, conceptual designs were developed, performance was analyzed for a range of climatic re… more
Date: March 19, 1977
Creator: Kirpich, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Conceptual design and systems analysis of photovoltaic systems. Volume II. Study results. Final report

Description: This investigation of terrestrial PV systems considered the technical and economic feasibility for systems in three size categories: a small system of about 12 kW peak output for on-site residential use; a large 1500 MW central power plant contributing to the bulk energy of a utility system power grid; and an intermediate size system of about 250 kW for use on public or commercial buildings. In each category, conceptual designs were developed, performance was analyzed for a range of climatic re… more
Date: March 19, 1977
Creator: Kirpich, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Study of capital requirements for solar energy. Final report, Volume 1. Analysis of the macroeconomic effects of increased solar energy market penetration

Description: This report defines the analytical framework for, and presents the results of, a study to determine the macroeconomic effects of increased market penetration of solar energy technologies over the 1977-2000 time period. For the purposes of this document, solar technologies are defined as wind, photovoltaics, ocean thermal electric (OTEC), small-scale (non-utility) hydroelectric and all solar active and passive thermal technologies. This research has been undertaken in support of the National Pla… more
Date: July 19, 1979
Creator: Pleatsikas, C.J.; Hudson, E.A.; O'Connor, D.C. & Funkhouser, D.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Study of capital requirements for solar energy. Final report, Volume 2. Appendix B: The Hudson-Jorgenson energy/economic model (Long-term interindustry transactions model): a description

Description: The Hudson-Jorgenson Energy/Economic Model - formally known as the Long Term Interindustry Transactions Model (LITM) - is an econometric model of the structure of the US economy. LITM integrates two separate models into one integrated system. These models are the Macroeconomic Model, a growth model incorporating the underlying trends of economic development, and the Interindustry Model, an endogenous coefficient input-output model of the structure of the economy incorporating patterns of expend… more
Date: July 19, 1979
Creator: Hudson, E.A. & Jorgenson, D.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Thermal-envelop stone house, solar. Final technical report

Description: The purpose of this project is to create a comfortable, low-cost heating system for a single-family house, without dependence on non-renewable energy sources. I have attempted to combine a simple solar air-heating collector with the thermal envelop concept (for thermal air circulation) and massive interior stone walls for heat storage. All building materials, with the exception of the solar glazing material and certain other solar components, are inexpensive and locally produced. Examples are: … more
Date: May 19, 1982
Creator: Avery, S. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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1-MWE Heat Exchangers for OTEC Final Design Report

Description: The design of a 1 MWe OTEC heat exchanger is documented, including the designs of the evaporator and associated systems, condenser, instrumentation, and materials for corrosion/erosion control and fabrication processes. (LEW)
Date: June 19, 1980
Creator: Sprouse, A.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Photovoltaic research opportunities. Final report

Description: The purpose of this study is to identify opportunities for photovoltaic (PV) research projects to capitalize on related but non-PV research. The study is performed under the assumption that a considerable body of ongoing semiconductor research in non-PV areas could be of value to its PV Program and the PV community in general. Research related to III-V compounds, thin films, and crystalline silicon materials is included. Research that is known to be PV-related or sponsored by DOE was excluded f… more
Date: November 19, 1985
Creator: Macaleer, B.; Bowers, J. & Hurlburt, B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Double-exposure collector system. Final technical report

Description: A retrofit solar water-heating system has been operating for the past two years in a three-story apartment building at Drexel University. The system employs two conventional collector banks (9 PPG collectors) mounted at the latitude angle for Philadelphia of 40 deg from the horizontal and two double-exposure collectors (DEC's) mounted vertically in mirrored enclosures. The relative performance of the conventional and double-exposure collectors has been monitored with an instrumentation sys… more
Date: October 19, 1979
Creator: Larson, D. C. & Savery, C. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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New applications of high-temperature solar energy for the production of transportable fuels and chemicals and for energy storage

Description: The solar fuels and chemicals study was limited to the examination of processes requiring temperatures in excess of 1000/sup 0/K since lower temperature processes had already been examined in studies concerned with the application of waste heat from nuclear power plants to industrial processes. In developing the carbon cycle processes, the primary activity included an extensive literature search and the thermodynamic evaluation of a number of candidate chemical cycles. Although both hydrogen an… more
Date: January 19, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Cooling concept integration. Phase I final technical report, October 1, 1979-July 31, 1981. [For pre-engineered metal buildings]

Description: Before specific test prototypes were developed, six potential evaporative roof cooling configurations with alternative storage and heat transfer mechanisms were examined, and preliminary cost estimates were made. Each system uses a wet roof system which sprays or floods the roof, allowing evaporative heat transfer to the environment. Finite difference thermal network methods were used for the evaluation of the systems. Detailed results including charts of the hourly heat flows during particular… more
Date: August 19, 1981
Creator: Fraker, H.; Glennie, W. & Snyder, M.K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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InterTechnology Corporation cost/benefit analysis report and supporting opinion survey commerical buildings National Solar Demonstration program

Description: Under the Solar Heating and Cooling Demonstration program, solar heated and cooled commercial buildings are to be constructed throughout the nation to show the technical and economic feasibility of solar energy systems and, most importantly, to establish an economically viable solar industry. The questions arise: How many solar energy systems must be installed and where should they be installed to meet these objectives. This report presents an answer to these questions.
Date: January 19, 1976
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Final Report: Vibrational Dynamics in Photoinduced Electron Transfer

Description: The objective of this grant was to understand how molecular vibrational states (geometry distortions) are involved in photoinduced electron transfer rates of molecules. This subject is an important component of understanding how molecular absorbers of light convert that energy into charge separation. This is important because the absorption usually excites molecular vibrations in a new electronic state prior to electron transfer to other molecules or semiconductor nanoparticles, as in some type… more
Date: April 19, 2006
Creator: Spears, Kenneth G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Early Unstable CO2-Fixation Products in Photosynthesis

Description: Some chemical, physical, and chromatographic properties of the hydroxylamine stabilized early products of CO{sub 2} fixation in photosynthesis are described. Although no definitive structural information is yet available, these properties, together with the biochemical context in which the material appears, make possible some likely suggestions about the nature of the substances.
Date: December 19, 1957
Creator: Metzner, Helmut; Metzner, Barbara & Calvin, Melvin
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Molecular Basis for Metabolic and Energetic Diversity

Description: We have used experimental and computational analysis of R. sphaeroides photosynthesis and other gene expression networks (Kaplan, Gomelsky, Donohue) (3-9, 12, 13, 15-18, 20). We have identified many new candidate photosynthesis genes with expression patterns that varied as a function of light intensity. Results from these experiments suggest there are many more light-regulated aspects of the photosynthetic lifestyle of this bacterium than previously appreciated. Ongoing genetic analysis confirm… more
Date: March 19, 2007
Creator: Timothy Donohue, PI
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Jobs and Renewable Energy Project

Description: Early in 2002, REPP developed the Jobs Calculator, a tool that calculates the number of direct jobs resulting from renewable energy development under RPS (Renewable Portfolio Standard) legislation or other programs to accelerate renewable energy development. The calculator is based on a survey of current industry practices to assess the number and type of jobs that will result from the enactment of a RPS. This project built upon and significantly enhanced the initial Jobs Calculator model by (1… more
Date: December 19, 2006
Creator: Sterzinger, George
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Quantification of thin film crystallographic orientation using X-ray diffraction with an area detector

Description: As thin films become increasingly popular (for solar cells, LEDs, microelectronics, batteries), quantitative morphological information is needed to predict and optimize the film's electronic, optical and mechanical properties. This quantification can be obtained quickly and easily with X-ray diffraction using an area detector and synchrotron radiation in two simple geometries. In this paper, we describe a methodology for constructing complete pole figures for thin films with fiber texture (iso… more
Date: February 19, 2010
Creator: Baker, Jessica L; Jimison, Leslie H; Mannsfeld, Stefan; Volkman, Steven; Yin, Shong; Subramanian, Vivek et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Microtextured Silicon Surfaces for Detectors, Sensors & Photovoltaics

Description: With support from this award we studied a novel silicon microtexturing process and its application in silicon-based infrared photodetectors. By irradiating the surface of a silicon wafer with intense femtosecond laser pulses in the presence of certain gases or liquids, the originally shiny, flat surface is transformed into a dark array of microstructures. The resulting microtextured surface has near-unity absorption from near-ultraviolet to infrared wavelengths well below the band gap. The high… more
Date: May 19, 2005
Creator: Carey, JE & Mazur, E
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Determination of the Built-in Electric Field near Contacts to Polycrystalline CuInSe{sub 2} - Probing Local Charge Transport Properties by Photomixing

Description: The built-in electric field in polycrystalline CuInSe{sub 2} (CIS) near gold co-planar contacts was quantitatively revealed for the first time by the photomixing technique. A He-Ne laser beam was focused locally on the CIS sample near one of its contact. While both dc dark and photo-currents showed ohmic behavior, the high frequency ac current was non-zero for zero applied dc bias, which reveals a built-in electric field of {approx}1000V/cm. The capability of the photomixing technique to probe … more
Date: November 19, 1998
Creator: Tang, Y.; Dong, S.; Sun, G. S.; Braunstein, R. & von Roedern, B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Clean Cities Award Winning Coalition: San Diego

Description: Stakeholders in the San Diego coalition have already helped remove about 125 tons of nitrogen oxides and 867 tons of carbon dioxide every year since their inception in 1996. They are proud of their numerous accomplishments, including the San Diego Gas and Electric's installation of a solar chargeport, which can charge up to six electric vehicles simultaneously and at no cost. San Diego Regional Clean Cities Coalition will also soon be home to the first alternative fuel vehicle (AFV) showroom in… more
Date: May 19, 1999
Creator: Kaiser, ICF
Item Type: Refine your search to only Book
Partner: UNT Libraries Government Documents Department
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On the Use of Reanalysis Data for Wind Resource Assessment

Description: The goal of the U.S. Department of Energy (DOE) Wind Energy Program's wind resource assessment group located at the National Renewable Energy Laboratory (NREL) in Golden, Colorado, is to improve the characterization of the wind resource in many regions of the world in support of the U.S. wind energy industry. NREL characterizes the level of the available wind resource at wind turbine hub heights (typically 30 m to 50 m above ground level) using wind power density, expressed in units of Watts pe… more
Date: November 19, 1998
Creator: Schwartz, M. N. & George, R. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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NedWind 25 Blade Testing at NREL for the European Standards Measurement and Testing Program

Description: In the mid-90s the European community initiated the Standards, Measurements, and Testing (SMT) program to harmonize testing and measurement procedures in several industries. Within the program, a project was carried out called the European Wind Turbine Testing Procedure Development. The second part of that project, called Blade Test Methods and Techniques, included the United States and was devised to help blade-testing laboratories harmonize their testing methods. This report provides the resu… more
Date: April 19, 2001
Creator: Larwood, S.; Musial, W.; Freebury, G. & Beattie, A. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Evaluation of selected chemical processes for production of low-cost silicon. Phase III. Twentieth quarterly progress report, July 1-September 30, 1980

Description: A number of problems have conspired to prevent full operation of the PDU during the report period. After a review of the situation, it was decided to cease the day-by-day attempts to achieve PDU operation, and to review the situation and make such longer-term repairs or modifications as appeared necessary for increasing the probability of success. As a result, a list of 12 modifications was made and the modifications initiated so that PDU operation can be initiated early in the next quarter. An… more
Date: December 19, 1980
Creator: Blocher, J.M. Jr.; Browning, M.F. & Seifert, D.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Path of Carbon in Photosynthesis. XVIII The Identification ofNucleotide Coenzymes

Description: The radioactive compounds to be observed when algae or green leaves are allowed to photosynthesize in C{sup 14}O{sub 2} for short periods are almost all phosphorylated derivatives of sugars. Of these, phosphate esters of trioses, sedoheptulose and fructose are the first to incorporate C{sup 14} followed closely by ribulose diphosphate, glucose-6-phosphate and a phosphate of mannose. It has been noted, in earlier papers of this series, that on radiograms of the products of photosynthesis, a dark… more
Date: January 19, 1953
Creator: Buchanan, J. G.; Lynch, V. H.; Benson, A. A.; Calvin, M. & Bradley, D. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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