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This report describes the following investigations being pursued under photovoltaic technology development at Sandia National Laboratories: photovoltaic systems technology; concentrator technology; concentrator arrays and tracking structures; concentrator solar cell development; system engineering; subsystem development; and test and applications.

Basic concepts for using the energy of the sun have been known for centuries. The challenge today, the goal of the Department of Energy`s National Solar Energy Program is to create the technology needed to establish solar energy as a practical, economical alternative to energy produced by depletable fuels--and to use that solar-produced energy in a wide variety of applications. To assist the DOE in this national effort, Sandia sponsors industrial and university research and development, manages a series of technical programs, operates solar experimental facilities, and carries out its own scientific and engineering research. This booklet describes their projects, their technical objectives, and explains how their experimental facilities are used to find the answers we`re seeking. Prospective participants from companies involved in solar-energy development or applications should find it especially useful since it outlines broad areas of opportunity. Projects include: central receiver technology; line-focus thermal technology; photovoltaic systems technology; wind turbine development; energy storage technology; and applied research in improved polycrystalline materials for solar cells and photoelectrolysis of water.

Recent (1977 to 1978) gravity and aeromagnetic surveys of the Timber Mountain region, southern Nevada, have revealed new details of subsurface structure and lithology. The data strongly suggest that deformation caused by volcanic events has been accommodated along straight-line faults combining in such a fashion as to given a curvilinear appearance to regional structure. The magnetic data suggest that rock units in the central graben and along the southeast margin of Timber Mountain may have been altered, perhaps thermally, from their original state. The gravity data indicate that the south part of the Timber Mountain is underlain by relatively dense rock possibly intrusive rock, like that which crops out along its southeast side. The gravity data also suggest that the Silent Canyon caldera may extend considerably south of its presently indicated southern limit and may underlie much of the area of Timber Mountain. The moat areas appear to be more rectangular or triangular than annular in shape. The southern part of Timber Mountain caldera is separated from the Yucca Mountain area to the south by a triangular horst. The structural relations of the rock units making up the horst are complex. Several linear terrain features in the southern part of …

The goal of the MISR project is to assist industry in developing viable Solar Energy Systems which have high reliability and low cost because they do not require custom engineering and installation for each industrial site. The collector field, piping and steam generation equipment are pre-engineered to be suitable for a wide range of industrial steam applications. The approach of the MISR project is twofold: to develop line-focus industrial solar thermal energy systems which, like conventional packaged steam boilers, are based on the modular concept; and to install and operate a number (10 or less) of these systems at existing industrial plants, supplementing steam produced by conventional boilers. The project is briefly described.

A facility-development effort is currently underway at Sandia National Laboratories in order to create an experimental capability for the study of two-phase, steam/water flows through a variety of porous media. The facility definition phase of this project is described. Equations are derived for the steady, adiabatic, macroscopically-linear two-phase flow of a single-component fluid through a porous medium, including energy transfer both by convection and conduction. These equations are then solved to give relative permeabilities for the steam and water phases as functions of known and/or measurable quantities. A viable experimental approach was thereby formulated, leading to the definition of facility components and instrumentation requirements, including the application of gamma-beam densitometry for the measurement of liquid-saturation distributions in porous media. Finally, a state-of-the-art computer code was utilized to numerically simulate the proposed experiments, providing an estimate of the facility operating envelope.

Scenarios are being constructed for the release of radioactive maerial from hypothetical repositories in different types of rock at NTS. Deductive event trees are constructed; each path through an event tree is a scenario. The complete set of NTS event trees comprises about 340 scenarios, not counting the multiple paths through the subtrees made by expanding complex events. Each of these scenarios is being analyzed for 10 different types of rocks. (DLC)

Over the past 15 years, steady and sometimes exciting progress has been made in the hybrid technology called Pulsed Power. Based on both electrical engineering and physics, pulsed power involves the generation, modification, and use of electrical pulses up to the multitrillion-watt and multimillion-volt ranges. The final product of these powerful pulses can take diverse forms--hypervelocity projectiles or imploding liners, energetic and intense particle beams, X-ray and gamma-ray pulses, laser light beams that cover the spectrum from ultraviolet to infrared, or powerful microwave bursts. At first, the needs of specific applications largely shaped research and technology in this field. New the authors are beginning to see the reverse--new applications arising from technical capabilities that until recently were though impossible. Compressing and heating microscopic quantities of matter until they reach ultra-high energy density represents one boundary of their scientific exploration. The other boundary might be a defensive weapon that can project vast amounts of highly directed energy over long distances. Other applications of the technology may range from the use of electron beams to sterilize sewage, to laboratory simulation of radiation effects on electronics, to electromagnetic launchings of projectiles into earth or into solar orbits. Eventually the authors hope to use …

DOE has selected Sandia National Laboratories as its lead laboratory to direct a program to develop and test batteries for electrical storage in a variety of solar applications. Initial emphasis is on storage in photovoltaic systems, but wind-energy and solar-thermal systems will be considered later. The BSSAP program is divided functionally into five tasks: Task 1--battery requirements analysis; Task 2--laboratory evaluation; Task 3--PV advanced systems tests; Task 4--applied experiments; Task 5--battery research and development. This report briefly discusses these tasks.

The MISR project has two goals. One is to assist industry in developing viable Solar Energy Systems which have high reliability and low cost because they do not require tailored engineering and installation for each industrial site. The collector field, piping and steam generation equipment are pre-engineered to be suitable for a wide range of industrial steam applications. This is the Modular Concept. The second goal is to fabricate, install, and test qualification test systems (representative of full-size MISR designs in all but the size of the collector field) to determine design quality, fabrication and installation correctness, and system cost. This activity allows the designers to produce the first MISR system, experimentally verify its operation and performance before committing to large scale solar installations, thereby avoiding the risks associated with the first system. It provides the potential industrial user with information upon which to base solar energy decisions. Five separate system designs are being developed under the MISR project. Four of the designs are being tested at Sandia National Laboratories at Albuquerque, New Mexico and one is being tested at the Solar energy Research Institute in Golden, Colorado.

The transcript of the Scoping Meeting for preparation of the Environmental Impact Statement for the Durango uranium mill tailings project is presented.

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Doug Weeks of Martin Nature Center shows an easy and inexpensive finch bird feeder made from an old 2-liter plastic soft drink container."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Don Tyner.. . 'I like fast horses."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Mrs. W.H. McDonald and her mother in law, Mrs. Ed McDonald, discuss the Christmas decorations in the Kiker home."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Reference books might serve fewer residents if library hours are cut."

Photograph used for a story in the Oklahoma Times newspaper. Caption: "The newest Norman fire station is under construction and should be ready late this spring."

Photograph used for a story in the Oklahoma Times newspaper. Caption: "This fire station will be Norman's sixth."

Weekly newspaper from Albany, Texas that includes local, state and national news along with extensive advertising.