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PV Charging System for Remote Area Operations

Description: The objective of this project is to provide the public with a study of new as well existing technology to recharge batteries used in the field. A new product(s) will also be built based upon the information ascertained. American Electric Vehicles, Inc. (AEV) developed systems and methods suitable for charging state-of-the-art lithium-ion batteries in remote locations under both ideal and cloudy weather conditions. Conceptual designs are described for existing and next generation technology, par… more
Date: July 31, 2008
Creator: Ilsemann, Frederick & Thompson, Roger
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Solar Energy Windows and Smart IR Switchable Building Technologies

Description: The three building envelope functions with the largest impact on the energy usage are illumination, energy flux and energy production. In general, these three functions are addressed separately in the building design. A step change toward a zero-energy building can be achieved with a glazing system that combines these three functions and their control into a single unit. In particular, significant value could be realized if illumination into the building is dynamically controlled such that it o… more
Date: September 30, 2011
Creator: McCarny, James & Kornish, Brian
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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City of Grand Rapids Building Solar Roof Demonstration

Description: Grand Rapids, Michigan is striving to reduce it environmental footprint. The municipal government organization has established environmental sustainability policies with the goal of securing 100% of its energy from renewable sources by 2020. This report describes the process by which the City of Grand Rapids evaluated, selected and installed solar panels on the Water/Environmental Services Building. The solar panels are the first to be placed on a municipal building. Its new power monitoring sy… more
Date: August 31, 2012
Creator: DeClercq, Mark & Martinez, Imelda
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Reducing the Cost of Thermal Energy Storage for Parabolic Trough Solar Power Plants

Description: Thermal energy storage systems using phase change materials were evaluated for trough systems that use oil, steam, and high temperature salts as heat transfer fluids. A variety of eutectic salts and metal alloys were considered as phase change materials in a cascaded arrangement. Literature values of specific heat, latent heat, density, and other thermophysical properties were used in initial analyses. Testing laboratories were contracted to measure properties for candidate materials for compar… more
Date: June 25, 2013
Creator: Gawlik, Keith
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Economic Feasibility and Market Readiness of Solar Technologies. Draft Final Report. Volume I.

Description: Systems descriptions, costs, technical and market readiness assessments are reported for ten solar technologies: solar heating and cooling of buildings (SHACOB), passive, agricultural and industrial process heat (A/IPH), biomass, ocean thermal (OTEC), wind (WECS), solar thermal electric, photovoltaics, satellite power station (SPS), and solar total energy systems (STES). Study objectives, scope, and methods. are presented. of Joint Task The cost and market analyses portion 5213/6103 will be use… more
Date: September 1, 1978
Creator: Flaim, Silvio J.; Buchanan, Deborah L.; Christmas, Susan; Fellhauer, Cheryl; Glenn, Barbara; Ketels, Peter A. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

MEASUREMENT AND ANALYSIS OF CIRCUMSOLAR RADIATION

Description: The purpose of this project is to provide measurements and analyses of the solar and circumsolar radiation for application to solar energy systems that employ lenses or mirrors to concentrate the incident sunlight. Circumsolar radiation results from the scattering of direct sunlight through small angles by atmospheric aerosols (e.g., dust, water-droplets or ice crystals in thin clouds). Concentrating solar energy systems will typically collect all of the direct solar radiation (that originating… more
Date: October 1, 1980
Creator: Grether, Donald; Evans, David; Hunt, Arlon & Wahlig, Michael
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Alternative Energy for Higher Education

Description: This project provides educational opportunities creating both a teaching facility and center for public outreach. The facility is the largest solar array in Nebraska. It was designed to allow students to experience a variety of technologies and provide the public with opportunities for exposure to the implementation of an alternative energy installation designed for an urban setting. The project integrates products from 5 panel manufacturers (including monocrystalline, polycrystalline and thin … more
Date: February 22, 2012
Creator: Michael Cherney, PhD
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
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COMPARISON OF PROPORTIONAL AND ON/OFF SOLAR COLLECTOR LOOP CONTROL STRATEGIES USING A DYNAMIC COLLECTOR MODEL

Description: Common control strategies used to regulate the flow of liquid through flat-plate solar collectors are discussed and evaluated using a dynamic collector model. Performance of all strategies is compared using different set points, flow rates, insolation levels and patterns (clear and cloudy days), and ambient temperature conditions. The unique characteristic of the dynamic collector model is that it includes effects of collector capacitance. In general, capacitance has a minimal effect on long te… more
Date: December 1, 1979
Creator: Schiller, Steven R.; Warren, Mashuri L. & Auslander, David M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Photovoltaic Materials

Description: The goal of the current project was to help make the US solar industry a world leader in the manufacture of thin film photovoltaics. The overall approach was to leverage ORNL’s unique characterization and processing technologies to gain a better understanding of the fundamental challenges for solar cell processing and apply that knowledge to targeted projects with industry members. ORNL has the capabilities in place and the expertise required to understand how basic material properties includin… more
Date: October 15, 2012
Creator: Duty, C.; Angelini, J.; Armstrong, B.; Bennett, C.; Evans, B.; Jellison, G. E. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Adaptive Full-Spectrum Solar Energy Systems Cross-Cutting R&D on adaptive full-spectrum solar energy systems for more efficient and affordable use of solar energy in buildings and hybrid photobioreactors

Description: This RD&D project is a multi-institutional effort to develop a hybrid solar lighting (HSL) system that transports daylight from a paraboloidal dish concentrator to a luminaire via a bundle of polymer fiber optics. The luminaire can be a device to distribute sunlight into a space for the production of algae for CO{sub 2} sequestration or it can be a device that is a combination of daylighting and electric lighting for space/task lighting. In this project, the sunlight is collected using a one-me… more
Date: March 30, 2006
Creator: Wood, Byard & Kim, Kwang
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Solar Design Workbook

Description: This Solar Design Workbook presents solar building design applications for commercial buildir^s. The book is divided into four sections. The first section describes the variety of solar applications in buildings including conservation aspects, solar fundamentals, passive systems, active systems, daylighting, and other solar options. Solar system design evaluation techniques including considerations for building energy requirements, passive systems, active systems, and economics are presented in… more
Date: June 1, 1981
Creator: Franta, Gregory; Baylin, F.; Crowther, R.; Dubin, F.; Grace, A., Griffith, J.W.; Holtz, M. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

ULTRA BARRIER TOPSHEET (UBT) FOR FLEXIBLE PHOTOVOLTAICS

Description: This slide-show presents 3M photovoltaic-related products, particularly flexible components. Emphasis is on the 3M Ultra Barrier Solar Films. Topics covered include reliability and qualification testing and flexible photovoltaic encapsulation costs.
Date: June 1, 2013
Creator: DeScioli, Derek
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A RECIPROCATING SOLAR HEATED ENGINE UTILIZING DIRECT ABSORPTION BY SMALL PARTICLES

Description: A new type of reciprocating solar engine utilizing small particles to absorb concentrated sunlight directly within the cylinders is described. The engine operates by drawing an air particle mixture into the cylinder, compressing the mixture, opening an optical valve to allow concentrated sunlight to enter through a window in the top of the cylinder head, absorbing the solar flux with the particles, and converting the heat trapped by the air-particle mixture into mechanical energy with the downw… more
Date: May 1, 1981
Creator: Hull, Patricia G. & Hunt, Arlon J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

ULTRA BARRIER TOPSHEET (UBT) FOR FLEXIBLE PHOTOVOLTAICS

Description: This poster describes the 3M Ultra-Barrier Solar Film and its application; production scale-up and data; reliability and qualification testing; and improvements in the next generation.
Date: January 1, 2013
Creator: Alan, Nachtigal; Berniard, Tracie; Murray, Bill; Roehrig, Mark; Schubert, Charlene; Spagnola, Joseph et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Ocean Thermal Energy Conversion Programmatic Environmental Assessment

Description: Significant achievements in Ocean Thermal Energy Conversion (OTEC) technology have increased the probability of producing OTEC-derived power in this decade with subsequent large-scale commercialization to follow by the turn of the century. Under U.S. Department of Energy funding, Interstate Electronics has prepared an OTEC Programmatic Environmental Assessment (EA) that considers tne development, demonstration, and commercialization of OTEC power systems. The EA considers several tecnnological … more
Date: August 1, 1980
Creator: Sands, M.Dale
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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High Efficiency Amorphous and Microcrystalline Silicon Based Double-Junction Solar Cells made with Very-High-Frequency Glow Discharge

Description: We have achieved a total-area initial efficiency of 11.47% (active-area efficiency of 12.33%) on a-Si:H/μc-Si:H double-junction structure, where the intrinsic layer bottom cell was made in 50 minutes. On another device in which the bottom cell was made in 30 min, we achieved initial total-area efficiency of 10.58% (active-efficiency of 11.35%). We have shown that the phenomenon of ambient degradation of both μc-Si:H single-junction and a-Si:H/μc-Si:H double-junction cells can be attributed to i… more
Date: October 20, 2004
Creator: Banerjee, Arindam
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Photovoltaic Cz Silicon Module Improvements

Description: Work focused on reducing the cost per watt of Cz silicon photovoltaic modules under Phase II of Siemens Solar Industries' DOE/NREL PVMaT 4A subcontract is described in this report. New module designs were deployed in this phase of the contract, improvements in yield of over 10% were realized, and further implementation of Statistical Process Control was achieved during this phase. Module configurations representing a 12% cost reduction per watt were implemented in small scale production under P… more
Date: September 1, 1998
Creator: Jester, T. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Ultra Barrier Topsheet (UBT) for Flexible Photovoltaics

Description: This slideshow presents work intended to: Scale-up the Generation -1 UBT to 1+meter width full-scale manufacturing; Develop a Generation-2 UBT on the pilot line, targeting improved performance, longer lifetime and lower cost; Transfer Generation-2 UBT from the pilot line to the full-scale manufacturing line in 2014; and Validate service life of Generation-1 UBT for the 25+ year lifetime. 3M has scaled up UBT for production at 1.2 meter width. 3M is conducting extensive lifetime studies includin… more
Date: January 9, 2013
Creator: Schubert, Charlene
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

DETAILED LOOP MODEL (DLM) ANALYSIS OF LIQUID SOLAR THERMOSIPHONS WITH HEAT EXCHANGERS

Description: An analytical Detailed Loop Model (DLM) has been developed to analyze the performance of solar thermosiphon water heaters with heat exchangers in storage tanks. The model has been used to study the performance of thermosiphons as a function of heat exchanger characteristics, heat transfer fluids, flow resistances, tank stratification, and tank elevation relative to the collector. The results indicate that good performance can be attained with these systems compared to thermosiphons without heat… more
Date: June 1, 1981
Creator: Mertol, A.; Place, W.; Webster, T. & Greif, R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Cleanable and Hardcoat Coatings for Increased Durability of Silvered Polymeric Mirrors

Description: We have successfully developed coating formulations which significantly increasethe abrasion resistance of mirror films. We have demonstrated manufacturing scale-up of these films to full width andproduction volumes. Implementation of these films in commercial test sites is planned for Q2 2013(Abengoa, Gossamer Space Frames). This slide show outlines the background and objectives of the project, technical approach and results, and key lessons. It also presents the need and opportunity for reduc… more
Date: April 1, 2013
Creator: Padiyath, Raghunath
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Recovery Act: Novel Kerf-Free PV Wafering that provides a low-cost approach to generate wafers from 150um to 50um in thickness

Description: The technical paper summarizes the project work conducted in the development of Kerf-Free silicon wafering equipment for silicon solar wafering. This new PolyMax technology uses a two step process of implantation and cleaving to exfoliate 50um to 120um wafers with thicknesses ranging from 50um to 120um from a 125mm or 156mm pseudo-squared silicon ingot. No kerf is generated using this method of wafering. This method of wafering contrasts with the current method of making silicon solar wafers us… more
Date: May 6, 2013
Creator: Fong, Theodore E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Solar America Initiative State Working Group: Final Scientific/Technical Report

Description: Through the support from the Department of Energy, NARUC has educated thousands of stakeholders, including Public Utility Commissioners, commission staff, and State energy officials on solar energy technology, implementation, and policy. During the lifetime of this grant, NARUC staff engaged stakeholders in policy discussions, technical research, site visits, and educational meetings/webinars/materials that provided valuable education and coordination on solar energy technology and policy among… more
Date: March 30, 2012
Creator: Taylor, Julie
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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