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in subjects: "Solar Equipment"

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Low-Cost Solar Array Project. Progress report 14, August 1979-December 1979 and proceedings of the 14th Project Integration Meeting

Progress made by the Low-Cost Solar Array Project during the period August through November 1979, is described. Progress on project analysis and integration; technology development in silicon material, large-area sheet silicon, and encapsulation; production process and equipment development; engineering, and operations, and the steps taken to integrate these efforts are detailed. A report on the Project Integration Meeting held December 5-6, 1979, including copies of the visual materials used, … more

Date: January 1, 1980

Item Type: Report

Partner: UNT Libraries Government Documents Department

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ETRANS: an energy transport system optimization code for distributed networks of solar collectors

The optimization code ETRANS was developed at the Pacific Northwest Laboratory to design and estimate the costs associated with energy transport systems for distributed fields of solar collectors. The code uses frequently cited layouts for dish and trough collectors and optimizes them on a section-by-section basis. The optimal section design is that combination of pipe diameter and insulation thickness that yields the minimum annualized system-resultant cost. Among the quantities included in th… more

Date: September 1, 1980

Creator: Barnhart, J.S.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Review of state-of-the-art of solar collector corrosion processes. Task 1 of solar collector studies for solar heating and cooling applications. Final technical progress report

The state-of-the-art of solar collector corrosion processes is reviewed, and Task 1 of a current research program on use of aqueous heat transfer fluids for solar heating and cooling is summarized. The review of available published literature has indicated that lack of quantitative information exists relative to collector corrosion at the present time, particularly for the higher temperature applications of solar heating and cooling compared to domestic water heating. Solar collector systems ar… more

Date: April 11, 1980

Creator: Clifford, J E & Diegle, R B

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Solar-thermal energy conversion and storage: cyclohexane dehydrogenation. Progress report, 30 September 1977-30 June 1978

The objective of this project is to provide research support for the benzene/cyclohexane heat pipe development program at Sandia. The kinetics of the cyclohexane decomposition (energy collection) reaction over a commercially available naphtha reforming catalyst (RD-150, Englehard Industries) in the temperature range 400 to 800/sup 0/F and pressures of 1 to 40 atmospheres were measured. Significant amounts of side products such as toluene and butane were identified at temperatures above 550/sup … more

Date: July 1, 1978

Creator: Ritter, A.B.; DeLancey, G.B.; Schneider, J. & Silla, H.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Solar heating and domestic hot water system installed at Kansas City, Fire Station, Kansas City, Missouri. Final report

This document is the final report of the solar energy heating and hot water system installed at the Kansas City Fire Station, Number 24, 2309 Hardesty Street, Kansas City, Missouri. The solar system was designed to provide 47 percent of the space heating, 8800 square feet area and 75 percent of the domestic hot water (DHW) load. The solar system consists of 2808 square feet of Solaron, model 2001, air, flat plate collector subsystem, a concrete box storage subsystem which contains 1428 cubic fe… more

Date: July 1980

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Comprehensive energy-management program. Hybrid photovoltaic/thermal absorber. Annual report, September 1, 1980-December 31, 1981

Research work was done during the reporting period on the two-part research program: (A) to improve energy conservation through increased unit and system efficiencies, energy management, and system optimization, and (B) to develop a novel, low-cost hybrid photovoltaic/thermal absorber. Performance tests were conducted on all the boilers and chillers on campus. Several corrective measures were indicated and implemented. A detailed survey of energy use by functions and consumption/demand study ha… more

Date: December 1, 1981

Creator: Kumar, G. N.; Sellers, J. P. & Dybczak, Z. W.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Solar hot water demonstration project at Red Star Industrial Laundry, Fresno, California

The Final Report of the Solar Hot Water System located at the Red Star Industrial Laundry, 3333 Sabre Avenue, Fresno, California, is presented. The system was designed as an integrated wastewater heat recovery and solar preheating system to supply a part of the hot water requirements. It was estimated that the natural gas demand for hot water heating could be reduced by 56 percent (44 percent heat reclamation and 12 percent solar). The system consists of a 16,500 gallon tube-and-shell wastewate… more

Date: July 1, 1980

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Cadmium sulfide/copper sulfide heterojunction cell research. Final report, February 26, 1979-July 15, 1980

Extensive modifications were made to the multi-source deposition apparatus. These include the installation of a larger vacuum chamber on the existing system. The new chamber provides improved inter-source shielding, an improved substrate mounting and heating system, and a vacuum interlock for introducing substrates. CdS resistivity control by both In doping and off-stoichiometric deposition has been investigated. Indium doping has been achieved both by diffusion from a pre-deposited In layer an… more

Date: June 30, 1980

Creator: Thornton, J. A. & Cornog, D. G.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Renewable Resources: a national catalog of model projects. Volume 2. Mid-American Solar Energy Complex Region

This compilation of diverse conservation and renewable energy projects across the United States was prepared through the enthusiastic participation of solar and alternate energy groups from every state and region. Compiled and edited by the Center for Renewable Resources, these projects reflect many levels of innovation and technical expertise. In many cases, a critique analysis is presented of how projects performed and of the institutional conditions associated with their success or failure. … more

Date: July 1, 1980

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Solar hot water system installed at Days Inn Motel, Jacksonville, Florida

The solar energy hot water system installed in the Days Inns of America, Inc., Days Inn Motel (120 rooms) I-95 and Cagle Road, Jacksonville, Florida, is described. The solar system was designed by ILI, Incorporated to provide 65 percent of the hot water demand. The system is one of eleven systems planned under this grant. Water (in the Solar Energy Products, Model CU-30ww liquid flat plate collector (900 square feet) system) automatically drains into the 1000 gallon lined and vented steel stora… more

Date: September 1, 1980

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Continuing development of the DEROB system. Quarterly report, July 1, 1980-September 30, 1980

The last module of the DEROB System has been reprogrammed and recoded in an effort to reduce the computational time and cost associated with using DEROB. Some preliminary tests have been carried out on the new program, and the tentative results show that the time of execution can be reduced anywhere from 7% to 40% of the time required by the previous version of DEROB. The variability in the improvement arises from the options specified by the user. Additional tests are being carried out to debu… more

Date: October 1, 1980

Creator: Arumi-Noe, F

Item Type: Report

Partner: UNT Libraries Government Documents Department

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SOLERAS - Solar Controlled Environment Agriculture Project. Final report, Volume 7. Science Applications, Incorporated field test facility preliminary design

This report contains the preliminary design of an SCEAS Engineering Test Facility (ETF). The ETF is a 3600 m/sup 2/ fluid roof greenhouse with an inflated plastic film roof to maintain a clean environment for the fluid roof and to protect the inner glazing from hail and other small missiles. The objective of the design was the faithful scaling of the commercial facility to ensure that the ETF results could be extrapolated to a commercial facility of any size. Therefore, all major features, incl… more

Date: January 1, 1985

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Indium phosphide/cadmium sulfide thin-film solar cells. Quarterly technical progress report No. 3, December 1979-April 1980

Thin films (approx. 1 ..mu..m thick) and large grains (approx. 40 x 40 ..mu..m) of InP were epitaxially deposited on low-cost recrystallized CdS (RXCdS) substrates at 280/sup 0/C by planar reactive deposition. At 380/sup 0/C, a 0.4- to 1.0-..mu..m-thick In-Cd-S transition layer between the InP and the RXCdS degrades the quality of the InP epitaxy. However, p-type InP films were prepared at this temperature by Be-doping and capping the entire RXCdS substrate with InP. Large grains of CdTe (appro… more

Date: June 1, 1980

Creator: Zanio, K.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Electrochemical photovoltaic cells. Project 65039 quarterly technical progress report, April 15-July 31, 1980

Liquid-junction photoelectrochemical cells can be used either for the direct conversion of solar energy to electricity or to generate stored chemical species available for later electrochemical discharge. The objectives of this program are to identify experimental approaches for electrochemical photovoltaic cells that not only show promise of high power-conversion efficiencies but also have the potential to achieve long life and the capacity for energy storage. The work is organized as follows:… more

Date: September 1, 1980

Creator: Ang, P. G.P. & Sammells, A. F.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Investigations of CuInSe sub 2 Thin Films and Contacts

This report describes research into electrical contacts for copper indium diselenide (CuInSe{sub 2}) polycrystalline thin films used for solar cell applications. Molybdenum contacts have historically been the most promising for heterojunction solar cells. This program studied contact stability by investigating thermally induced bilayer reactions between molybdenum and copper, indium, and selenium. Because selenization is widely used to fabricate CuInSe{sub 2} thin films for photovoltaic cells, … more

Date: October 1, 1991

Creator: Nicolet, M. A.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Recycled used fluorescent light tube solar water heater. Final technical report

A project to investigate methods that might be used to utilize old fluorescent light tubes as solar water heater components then to produce a booklet of instructions for others to use to construct their own water heaters is described. Various methods of opening, cleaning and shaping the ends of the tubes were attempted. The reflective material needed inside some of the heaters was mylar and worked quite well but the Btu gain was disappointing. There were problems with the cement used and epoxy … more

Date: January 1, 1979

Creator: Jaquette, F M

Item Type: Report

Partner: UNT Libraries Government Documents Department

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An update on environmental, health and safety issues of interest to the photovoltaic industry

There is growing interest in the environmental, health, and safety issues related to new photovoltaic technologies as they approach commercialization. Such issues include potential toxicity of II--VI compounds; the impacts of new environmental regulations on module manufacturers; and, the need for recycling of spent modules and manufacturing wastes. This paper will review these topics. 20 refs.

Date: January 1, 1992

Creator: Moskowitz, P. D.; Viren, J. & Fthenakis, V. M.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Passive incentive requirements: a regional assessment

The nation's goal of 20% solar contribution by the turn of the century will be achieved, in part, by the construction of residences heated by virtue of their passive solar designs. These designs are not economically competitive against all conventional fuels in all locations. Some degree of government incentive will be required to assure a competitive position for these designs. A methodology is presented which is used to assess the magnitude of the government incentive required to assure feasi… more

Date: January 1, 1980

Creator: Ben-David, S.; Kirschner, C.; Noll, S.A. & Roach, F.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Evaluation of the solar building, Albuquerque, New Mexico. Final report, April 1974-September 1978

During portions of the 1974-1975 and 1975-1976 winter heating seasons, a field evaluation was made of a solar-assisted heat pump heating system in a small commercial office building in Albuquerque, N.M. The system was comprised of one main water-to-water heat pump and five small water-to-air heat pumps. The liquid-type solar collector array had an area equivalent to about 10% of the building floor area. Other than the ethylene glycol/water solution circulated through the solar collector array, … more

Date: December 1, 1979

Creator: Gilman, S.F.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Solder fatigue reduction in point focus photovoltaic concentrator modules

Solder fatigue tests have been conducted on point focus photovoltaic concentration cell assemblies to identify a baseline fatigue life and to quantify the fatigue life improvements that result using a copper-molybdenum-copper low-expansion insert between the solar cell and copper heat spreader. Solder microstructural changes and fatigue crack growth were identified using cross sections and ultrasonic scans of the fatigue solder joints. The Coffin-Manson and Total Strain fatigue models for low-c… more

Date: January 1, 1991

Creator: Hund, T. D. & Burchett, S. N.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Comparative ranking of 0. 1-10 MW/sub e/ solar thermal electric power systems. Volume II. Supporting data. Final report

This report is part of a two-volume set summarizing the results of a comparative ranking of generic solar thermal concepts designed specifically for electric power generation. The original objective of the study was to project the mid-1990 cost and performance of selected generic solar thermal electric power systems for utility applications and to rank these systems by criteria that reflect their future commercial acceptance. This study considered plants with rated capacities of 1-10 MW/sub e/,… more

Date: July 1, 1980

Creator: Thornton, J.P.; Brown, K.C.; Finegold, J.G.; Gresham, J.B.; Herlevich, F.A. & Kriz, T.A.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Silicon ingot casting: Heat Exchanger Method (HEM)/multi-wire slicing: Fixed Abrasive Slicing Technique (FAST), Phase IV. Quarterly progress report No. 2, April 1, 1980-June 30, 1980

Silicon ingot size cast by HEM has been extended to 34 cm x 34 cm x 10 cm. A 20 kg ingot has been solidified at 3 kg/hr with no crucible attachment or ingot cracking problems. Another ingot of 26 kg weight has also been solidified. The heat treatment used to develop a graded structure caused cracking on the inside surface of the first large crucibles. The thermal conditions were altered to minimize high gradients and the cracking was eliminated. A high degree of single crystallinity has been ma… more

Date: August 1, 1980

Creator: Schmid, F.; Khattak, C.P. & Basaran, M.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Cadmium sulfide/copper ternary heterojunction cell research. Final report, January 8, 1979-June 7, 1980

Dual source, Se and CuInSe/sub 2/, coevaporation and flash evaporation of stoichiometric CuInSe/sub 2/ powder were investigated to develop a process of fabricating large area CdS/CuInSe/sub 2/ heterojunction solar cells. CuInSe/sub 2/ was seen to decompose upon evaporation, producing layered films in the dual source system. Annealing of these films and alternative dual sources have been considered. Single phase p type films have been produced but no devices have been made from such films. Flash… more

Date: January 1, 1980

Creator: Fleming, D. L.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Solar Energy System Performance Evaluation: seasonal report for Wormser, Columbia, South Carolina

The Wormser Solar Energy System located in a four unit townhouse apartment (5400 square feet) in Columbia, South Carolina was designed to provide 50% of the hot water and 70% of the space heating by the Wormser Scientific Corporation, Stamford, Connecticut. The Solar Energy System consists of 266 ft/sup 2/ of pyramidal optics, flat-plate liquid collectors, a solar window area of 1152 ft/sup 2/, a 2500 gallon thermal water storage tank, an energy transport system (water), heat exchangers, pumps,… more

Date: August 1, 1980

Item Type: Report

Partner: UNT Libraries Government Documents Department