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Protective coatings and sealants for solar applications

Description: An aging study has been completed which evaluated a number of polymeric materials for potential use as (1) protective coatings for back surfaces of mirrors and (2) solar heliostat edge seals. These investigations were conducted in an artificial weathering chamber that accelerated thermal cycling. The primary mirror failure mode was observed to be silver corrosion resulting from moisture exposure. To increase mirror longevity in current heliostat designs, intimate bonding at all the composite in… more
Date: September 1, 1980
Creator: Wischmann, K. B. & Gonzales, M. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Solar Pilot Plant, Phase I. Preliminary design report. Volume II. System description and system analysis. CDRL item 2

Description: Honeywell conducted a parametric analysis of the 10-MW(e) solar pilot plant requirements and expected performance and established an optimum system design. The main analytical simulation tools were the optical (ray trace) and the dynamic simulation models. These are described in detail in Books 2 and 3 of this volume under separate cover. In making design decisions, available performance and cost data were used to provide a design reflecting the overall requirements and economics of a commercia… more
Date: May 1, 1977
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Solar Pilot Plant, Phase I. Preliminary design report. Volume II, Book 2. Central receiver optical model users manual. CDRL item 2. [HELIAKI code]

Description: HELIAKI is a FORTRAN computer program which simulates the optical/thermal performance of a central receiver solar thermal power plant for the dynamic conversion of solar-generated heat to electricity. The solar power plant which this program simulates consists of a field of individual sun tracking mirror units, or heliostats, redirecting sunlight into a cavity, called the receiver, mounted atop a tower. The program calculates the power retained by that cavity receiver at any point in time or th… more
Date: May 1, 1977
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A replaceable reflective film for solar concentrators

Description: The 3M Company manufactures a silvered acrylic film called ECP-305 that is regarded as the preferred reflective film for use on stretched-membrane heliostats. However, ECP-305 will degrade in time, due to both corrosion of the silver layer and delamination at the film's silver-to-acrylic interface, and will eventually need to be replaced. 3M uses a very aggressive adhesive on this film, and once it is laminated, replacement is very difficult. The purpose of this investigation was the developmen… more
Date: September 1, 1991
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Assessment of solar options for small power systems applications. Volume V. SOLSTEP: a computer model for solar plant system simulations

Description: The simulation code, SOLSTEP, was developed at the Pacific Northwest Laboratory to facilitate the evaluation of proposed designs for solar thermal power plants. It allows the user to analyze the thermodynamic and economic performance of a conceptual design for several field size-storage capacity configurations. This feature makes it possible to study the levelized energy cost of a proposed concept over a range of plant capacity factors. The thermodynamic performance is analyzed on a time step b… more
Date: September 1, 1980
Creator: Bird, S.P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Central receiver solar thermal power system. Phase 1. CDRL item 2; Pilot Plant preliminary design report. Volume II. System decription and system analysis

Description: An active system analysis and integration effort has been maintained. These activities have included the transformation of initial program requirements into a preliminary system design, the evolution of subsystem requirements which lay the foundation for subsystem design and test activity, and the overseeing of the final preliminary design effort to ensure that the subsystems are operationally compatible and capable of producing electricity at the lowest possible cost per unit of energy. Volume… more
Date: October 1, 1977
Creator: Hallet, Jr., R. W. & Gervais, R. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Assessment of solar options for small power systems applications. Volume IV. Comparative ranking of concepts

Description: A comparative analysis of solar thermal conversion concepts that are potentially suitable for development as small electric power systems (1 to 10 MWe) is presented. Cogeneration and total energy systems were beyond the scope of this study. Seven generic type of collectors, together with associated subsystems for electric power generation, were considered. The collectors can be classified into three categories: (1) two-axis tracking (with compound-curvature reflecting surfaces); (2) one-axis tr… more
Date: July 1, 1980
Creator: Currie, J.W. & Jannol, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Assessment of Solar Options for Small Power Systems Applications. Volume III. Analysis of Concepts

Description: A comparative analysis of solar thermal conversion concepts that are potentially suitable for development as small electric power systems (1 to 10 MWe) is given. Seven generic types of collectors, together with associated subsystems for electric power generation, were considered. The collectors can be classified into three categories: (1) two-axis tracking (with compound-curvature reflecting surfaces; (2) one-axis tracking (with single-curvature reflecting suraces; and (3) nontracking (with low… more
Date: September 1, 1980
Creator: Laity, W. W.; Aase, D. T.; Apley, W. J.; Bird, S. P.; Drost, M. K.; Garrett-Price, B. A. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Texasgulf solar cogeneration program. Mid-term topical report

Description: The status of technical activities of the Texasgulf Solar Cogeneration Program at the Comanche Creek Sulfur Mine is described. The program efforts reported focus on preparation of a system specification, selection of a site-specific configuration, conceptual design, and facility performance. Trade-off studies performed to select the site-specific cogeneration facility configuration that would be the basis for the conceptual design efforts are described. Study areas included solar system size, t… more
Date: February 1, 1981
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Assessment of solar options for small power systems applications. Volume II. Identification and characterization of concepts for analysis

Description: The primary purpose of this study is to provide DOE with an independent, objective assessment of the principal solar thermal conversion concepts that have the potential for achieving commercial success as small electric power sytems in the 1- to 10-MWe range. Seven generic types of collectors, together with associated subsystems for electric power generation, were considered in this study. The collectors can be classified into three categories: (1) two-axis tracking (with compound curvature ref… more
Date: June 1, 1980
Creator: Laity, W.W.; Aase, D.T.; Apley, W.J.; Bird, S.P.; Drost, M.K. & Williams, T.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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System specification for Fort Hood Solar Cogeneration Facility

Description: The characteristics and design and environmental requirements are specified for a solar cogeneration facility at the Fort Hood Army Base in Killeen, Texas. Characteristics of the system and major elements are described, and applicable standards, codes, laws and regulations are listed. Performance requirements for the total system and for each individual subsystem are presented. Survival requirements are given for various environmental extremes, with consideration given to lightning protection a… more
Date: May 1, 1981
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Central receiver solar thermal power system, Phase 1. Pilot plant cost and commercial plant cost and performance preliminary design report. [150 MW commercial tower focus plant and 10 MW pilot plant]

Description: Detailed cost and performance data for the 10 MWe Pilot Plant and the 150 MWe Commercial Plant are given. The Commercial Plant consists of 15 integrated collector - receiver modules. Each module contains 1325 heliostats and an internally mounted steam-generating receiver on a steel tower with an aperture height of 90 M. The Pilot Plant consists of one full-scale collector - receiver module. The two-stage sensible heat storage system utilizes a heat transfer salt medium and a hydrocarbon oil sto… more
Date: January 1, 1977
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Solar Pilot Plant project review No. 9, May 4--5, 1977. CDRL item 10

Description: Drawings and illustrations for the project review are presented. These are included for the 10 MW(e) solar pilot plant, the collector subsystem, the receiver subsystem, the electrical power generation system and balance of plant, plant controls and transient analysis, availability and safety, pilot and commercial plant designs, and summary and recommendations. (MHR)
Date: January 1, 1977
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Heliostat mirror survey and analysis

Description: The mirrors used on concentrating solar systems must be able to withstand severe and sustained environmental stresses for long periods of time if they are to be economically acceptable. Little is known about how commercially produced wet process silvered second surface mirrors will withstand the test of time in solar applications. Field experience in existing systems has shown that the performance of the reflective surface varies greatly with time and is influenced to a large extent by the cons… more
Date: September 1, 1979
Creator: Lind, M. A.; Buckwalter, C. Q.; Daniel, J. L.; Hartman, J. S.; Thomas, M. T. & Pederson, L. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Evaluation of line focus solar central power systems. Volume II. Systems evaluation

Description: An evaluation was completed to ascertain the applicability of line focus technologies to electrical power applications and to compare their performance and cost potential with point focus central receiver power systems. It was concluded that although the high temperature line focus (SRI) and fixed mirror line focus (GA) concepts duplicate the heat source characteristics and power conversion technology of the central receiver concepts these configurations do not offer a sufficient improvement in… more
Date: March 15, 1980
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Design of the support structure, drive pedestal, and controls for a solar concentrator

Description: The glass/metal McDonnell-Douglas dish is the state-of-the-art of parabolic dish concentrators. Because of the perceived high production cost of this concentrator, the Department of Energy's Solar Thermal Program is developing stretch-membrane technology for large (75 kWt) solar concentrators for integration with receivers and engines in 25 kWe dish-Stirling systems. The objective of this development effort is to reduce the cost of the concentrator while maintaining the high levels of performan… more
Date: August 1, 1991
Creator: Goldberg, V.R.; Ford, J.L. & Anderson, A.E. (WG Associates, Dallas, TX (United States))
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Solar thermal hydrogen production process. Annual technical progress report, January-December, 1979

Description: Westinghouse is currently under contract to DOE for technology development of the Sulfur Cycle, a hybrid thermochemical-electrochemical process for the production of hydrogen and oxygen from water. Operational studies have been conducted and have resulted in definitions of operating modes for solar/hydrogen plants and in assessments of the day/night and annual variations in performance that will influence the operating modes and the sizing of plant subsystems. Conceptual design studies have bee… more
Date: January 1, 1979
Creator: Parker, G.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

SCRAM: a fast computational model for the optical performance of point fucus solar central receiver systems

Description: Because of the complexities of heliostat shadowing and blocking calculations, computational models for the optical performance of point focus central receiver (PFCR) systems tend to be too slow for many important applications, such as optimization studies based on performance with realistic weather data. In this paper, a mathematical approximation procedure, designated Sandia Central Receiver Approximation Model (SCRAM) will be described. Rather than simulating the system components from first … more
Date: April 1, 1980
Creator: Bergeron, K. D. & Chiang, C. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Second-generation-heliostat optimization studies. Final report

Description: The objective of this study was to define and quantify cost reductions in the Martin Marietta Denver Aerospace Second Generation Heliostat resulting from design and cost optimization. These cost reductions were based on optimizing the heliostat performance vs. cost and engineering design, and reviewing the design specification in selected technological areas with a goal of removing nonrealistic requirements and eliminating or minimizing overdesign. Specific technological areas investigated were… more
Date: May 1, 1982
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Solar Pilot Plant, Phase I. Preliminary design report. Volume I. Executive overview (approved). CDRL item 2. [10 MW; Barstow, California]

Description: The project goals, program schedules, and preliminary design for the 10 MW central receiver pilot plant at Barstow, California are presented. Details of the collector field, receiver/tower, thermal storage system, electrical power conversion subsystem, and control systems are given. (WHK)
Date: August 1, 1977
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

HELIOS: a computational model for solar concentrators

Description: The HELIOS computer code calculates the power concentrated by a field of individually guided heliostats and the resulting flux density (watts/cm/sup 2/) falling upon an arbitrary target grid. The problem has individual subroutines for each task in order to incorporate options for a variety of facet shapes, heliostat designs, field layouts, and tower-receiver apertures, and to facilitate additions and code improvements. HELIOS has been used extensively to analyze questions on safety, performance… more
Date: unknown
Creator: Biggs, F. & Vittitoe, C. N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Wind energy/geothermic/solar heating system. Final report

Description: I've observed three distinct ''camps'' of renewable energy resources; WIND, Geothermic, and Solar. None of the three are completely adequate for the NE by themselves. I observe little effort to combine them to date. My objective has been to demonstrate that the three can be combined in a practical system. To mitagate the high cost and poor payback for individual residences, I believe neighborhoods of 4 to 5 homes, apartment complexes or condominiums could form an Energy Association alloting a p… more
Date: January 1, 1981
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Computer simulation of shading and blocking: Discussion of accuracy and recommendations

Description: A field of heliostats suffers losses caused by shading and blocking by neighboring heliostats. The complex geometry of multiple shading and blocking events suggests that a processing code is needed to update the boundary vector for each shading or blocking event. A new version, RSABS, (programmer's manual included) simulates the split-rectangular heliostat. Researchers concluded that the dominant error for the given heliostat geometry is caused by the departure from planarity of the neighboring… more
Date: April 1, 1992
Creator: Lipps, F.W. (Houston Univ., TX (United States))
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Central receiver solar thermal power system, Phase 1. CRDL Item 2. Pilot plant preliminary design report. Volume III, Book 2. Collector subsystem

Description: The methods and plans for the manufacture of the 10-MW collector heliostats and associated controls for the pilot plant are detailed. An in-depth description of the production, installation, and verification testing of heliostats for the pilot plant is presented. Specifications for the performance, design, and test requirements for the pilot plant collector subsystem are included. Also, a heliostat location summary report is given. (WHK)
Date: October 1, 1977
Creator: Hallet, Jr., R. W. & Gervais, R. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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