202 Matching Results

Search Results

Advanced search parameters have been applied.

Implementation of solar industrial process heat: summary

Description: The implementation of solar industrial process heat systems will depend not only on the successful development of reliable and efficient solar technologies, but also on the intelligent and sound application of process engineering principles. This poses an important challenge which must be given increasing attention if SIPH systems are to be adopted by industry. (MOW)
Date: November 1, 1979
Creator: Kearney, D. W.
Partner: UNT Libraries Government Documents Department

Barriers to solar process heat projects: Fifteen highly promising (but cancelled) projects

Description: We analyzed technical, economic, and institutional barriers encountered by the solar industry in penetrating the market of solar thermal systems as applied in industry, commerce, and government. The barriers discussed are not theoretical or developed by conducting marketing research surveys of potential users. Rather, they are barriers that precluded implementing actual solar projects for 15 ``highly promising`` prospective users. The efforts to determine their technical and economic feasibility were funded by the US Department of Energy (DOE) Solar Process Heat (SPH) program. Each year, the SPH program conducts a prefeasibility studies activity -- an engineering assessment of the technical and economic feasibility of a solar system for a specific application for a specific end-user. These studies also assess institutional issues that impact the feasibility of the proposed project and develop an action plan for the project`s implementation. In FY 1991 and FY 1992, the program funded a total of 11 studies in which solar projects were investigated for 21 potential users. Of these 21 potential users, only three have made firm commitments to acquire solar systems, yielding a 14% success rate (decisions by three other companies are still pending). The low success rate is disappointing because the solar companies had complete freedom to select ``highly promising`` potential users. We therefore evaluated the reasons for the low success rate and the implications for market penetration.
Date: October 1, 1994
Creator: Carwile, C. & Hewett, R.
Partner: UNT Libraries Government Documents Department

Analysis of the HBr-based hydrogen production process as being developed by the SRT Group, Inc. Process study

Description: The SRT Group is developing a process that produces hydrogen from the electrolysis of hydrobromic acid. Compared to conventional water electrolysis, HBr electrolysis requires about 25% less electricity per unit of hydrogen produced. The capital and O and M costs are higher though, because of equipment that is required to regenerate HBr from the bromine formed in the electrolyzer (as a comparison a water electrolyzer discards the oxygen product and imports new water feedstock). Exhibit 1 presents summary statistics for the HBr and water electrolysis systems. All else equal, the HBr electrolysis process will be favorable to water electrolysis in situations where electricity is more expensive. A cost model is developed for water and HBr electrolysis systems. It indicates that HBr electrolysis is favored when the average cost of electricity exceeds 5.9 cents/kWh, at which price the cost of hydrogen 2.8 $/kg (20 $/MMBtu). In most cases steam methane reforming would be preferred if electricity costs are higher than 4 cents/kWh, indicating little commercial viability for HBr electrolysis. In 1996, SRT Group proposed a revised concept that addressed the issues associated with the solar-based process. Their idea is to add methane to the reactor with the bromine and water. The methane scavenges the oxygen produced in reaction (1) thus driving a higher conversion of bromine to HBr. Also, the reaction of methane and oxygen provides needed heat. The SRT Group has tested this concept in the laboratory and has demonstrated hydrogen production. The purpose of this analysis is to assess the economic potential of SRT Group`s innovation.
Date: October 1, 1997
Creator: DiPietro, J.P. & Skolnik, E.G.
Partner: UNT Libraries Government Documents Department

Solar production of industrial process steam ranging in temperature from 300/sup 0/F to 550/sup 0/F (Phase I). Volume 2. Appendices. Final report

Description: This volume contains the following appendices: (1) equipment requisitions, (2) instrument list, (3) mechanical subcontract requisition, (4) electrical subcontract requisition, (5) site preparation and subcontract requisition, (6) building subcontract requisition, and (7) job specifications. (MOW)
Date: June 30, 1979
Partner: UNT Libraries Government Documents Department

Alternative economic evaluation measures for solar industrial process heat

Description: The measures most commonly used to assist decision-makers in evaluating the economic merits of solar energy projects are described and compared. An example is given to illustrate the economic evaluation measures and the results are applied to a solar industrial process heat project. Four widely used economic measures are: net present value, benefit-cost ratio, internal rate of return, and payback period. (MHR)
Date: July 30, 1980
Partner: UNT Libraries Government Documents Department

The Department of Energy`s Solar Industrial Program: 1994 review

Description: This is a report on DOE`s Solar Industrial Program. The topics of the report include an overview of the program, it`s participants and it`s objectives; solar detoxification--using solar energy to destroy environmental contaminants in air, water, and soil; solar process heat--generating industrial quantities of hot water, steam, and hot air from solar energy; and advanced processes--using concentrated solar energy to manufacture high-technology materials and develop new industrial processes.
Date: March 1, 1995
Partner: UNT Libraries Government Documents Department

Solar thermal repowering

Description: Solar central receiver technology is developing steadily with a promise of becoming a real commercial alternative for energy generation in the late 1980s. Significant potential markets have been identified, research and development of important components is proceeding well, and the first full-system verification experiment at Barstow, California, is under construction. However, much work still lies ahead. A big step toward the realization of large-scale commercial use of solar energy was taken when the Department of Energy (DOE) issued a solicitation in March 1979 for utility repowering/industrial retrofit system conceptual design studies employing solar central receivers. Twenty-two responses were evaluated, and twelve were selected for funding. The results of the twelve studies, plus one study completed earlier and one privately funded, are sufficiently encouraging to warrant proceeding to the next stage of the program: cost-shared projects chosen through open competition. Eight of he fourteen studies are for electric utility repowering of existing oil or natural gas generating plants. The other six are the first site-specific studies of the use of solar central receiver systems for industrial process heat. The industrial processes include gypsum board drying, oil refining, enhanced oil recovery, uranium ore processing, natural gas processing, and ammonia production. Site descriptions, project summaries, conceptual designs, and functional descriptions are given for each of these 14 studies.
Date: August 1, 1980
Partner: UNT Libraries Government Documents Department

The solar thermal report. Volume 3, Number 5

Description: This report is published by the Jet Propulsion Laboratory for the DOE Solar Thermal Technology Division to provide an account of work sponsored by the Division and to aid the community of people interested in solar thermal technology in gaining access to technical information. Contents include articles entitled the following: Solar system supplies thermal energy for producing chemicals at USS plant; Solar thermal power module designed for small community market; Roof-mounted trough system supplies process heat for Caterpillar plant; Solar thermal update -- 10 MW(e) pilot plant and 3-MW(t) total energy system; Solar steam processes crude oil; New York investigates solar ponds as a source of thermal energy; On-farm solar -- Finding new uses for the sun; and Topical index of solar thermal report articles.
Date: September 1, 1982
Partner: UNT Libraries Government Documents Department

Modular Industrial Solar Retrofit fact sheet

Description: 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.
Date: December 31, 1981
Partner: UNT Libraries Government Documents Department

Solar hydrogen energy system. Annual report, 1995--1996

Description: The paper reports progress on three tasks. Task A, System comparison of hydrogen with other alternative fuels in terms of EPACT requirements, investigates the feasibility of several alternative fuels, namely, natural gas, methanol, ethanol, hydrogen and electricity, to replace 10% of gasoline by the year 2000. The analysis was divided into two parts: analysis of vehicle technologies and analysis of fuel production, storage and distribution. Task B, Photovoltaic hydrogen production, involves this fuel production method for the future. The process uses hybrid solar collectors to generate dc electricity, as well as high temperature steam for input to the electrolyzer. During the first year, solar to hydrogen conversion efficiencies have been considered. The third task, Hydrogen safety studies, covers two topics: a review of codes, standards, regulations, recommendations, certifications, and pamphlets which address safety of gaseous fuels; and an experimental investigation of hydrogen flame impingement.
Date: December 31, 1996
Creator: Veziroglu, T.N.
Partner: UNT Libraries Government Documents Department

STDAC: Solar Thermal Design Assistance Center annual report fiscal year 1994

Description: The Solar Thermal Design Assistance Center (STDAC) at Sandia is a resource provided by the DOE Solar Thermal Program. The STDAC`s major objective is to accelerate the use of solar thermal systems by providing direct technical assistance to users in industry, government, and foreign countries; cooperating with industry to test, evaluate, and develop renewable energy systems and components; and educating public and private professionals, administrators, and decision makers. This FY94 report highlights the activities and accomplishments of the STDAC. In 1994, the STDAC continued to provide significant direct technical assistance to domestic and international organizations in industry, government, and education, Applying solar thermal technology to solve energy problems is a vital element of direct technical assistance. The STDAC provides information on the status of new, existing, and developing solar technologies; helps users screen applications; predicts the performance of components and systems; and incorporates the experience of Sandia`s solar energy personnel and facilities to provide expert guidance. The STDAC directly enhances the US solar industry`s ability to successfully bring improved systems to the marketplace. By collaborating with Sandia`s Photovoltaic Design Assistance Center and the National Renewable Energy Laboratory the STDAC is able to offer each customer complete service in applying solar thermal technology. At the National Solar Thermal Test Facility the STDAC tests and evaluates new and innovative solar thermal technologies. Evaluations are conducted in dose cooperation with manufacturers, and the results are used to improve the product and/or quantify its performance characteristics. Manufacturers, in turn, benefit from the improved design, economic performance, and operation of their solar thermal technology. The STDAC provides cost sharing and in-kind service to manufacturers in the development and improvement of solar technology.
Date: December 31, 1994
Partner: UNT Libraries Government Documents Department

Reducing fuel usage through applications of conservation and solar energy

Description: Solar thermal technology, coupled with aggressive conservation measures, offers the prospect of greatly reducing the dependence of industry on oil and natural gas. The near-term market for solar technology is largely in industrial processes operating at temperatures below 288/sup 0/C (550/sup 0/F). Such process heat can be supplied by the relatively unsophisticated solar equipment available today. The number and diversity of industrial plants using process heat at this temperature allows favorable matches between solar technologies and industrial processes. The problems involved with the installation and maintenance of conservation and solar equipment are similar. Both compete for scarce investment capital, and each complicates industrial operations and increases maintenance requirements. Technological innovations requiring new types of equipment and reducing the temperature requirements of industrial processes favor the introduction of solar hardware. The industrial case studies program at the Solar Energy Research Institute has examined technical, economic, and other problems facing the near-term application of solar thermal technology to provide industrial process heat. The plant engineer is in the front line of any measure to reduce energy consumption or to supplement existing fuel supplies. The conditions most favorable to the integration of solar technology are presented and illustrated with examples from actual industrial plants.
Date: April 1, 1980
Creator: May, E. K. & Hooker, D. W.
Partner: UNT Libraries Government Documents Department

Preliminary operational results of the industrial process heat field tests

Description: There are currently six DOE-funded solar industrial process heat (IPH) field tests which have been operational for one year or longer. These are all low temperature first generation projects which supply heat at temperatures below 100/sup 0/C - three hot water and three hot air. During the 1979 calendar year, personnel from the Solar Energy Research Institute (SERI) visited all of these sites; the performance and cost results obtained for each project and the operational problems encountered at each site are discussed.
Date: April 1, 1980
Creator: Kutscher, C. & Davenport, R.
Partner: UNT Libraries Government Documents Department

Potential for supplying solar thermal energy to industrial unit operations

Description: Previous studies have identified major industries deemed most appropriate for the near-term adoption of solar thermal technology to provide process heat; these studies have been based on surveys that followed standard industrial classifications. This paper presents an alternate, perhaps simpler analysis of this potential, considered in terms of the end-use of energy delivered to industrial unit operations. For example, materials, such as animal feed, can be air dried at much lower temperatures than are currently used. This situation is likely to continue while economic supplies of natural gas are readily available. However, restriction of these supplies could lead to the use of low-temperature processes, which are more easily integrated with solar thermal technology. The adoption of solar technology is also favored by other changes, such as the relative rates of increase of the costs of electricity and natural gas, and by energy conservation measures. Thus, the use of low-pressure steam to provide process heat could be replaced economically with high-temperature hot water systems, which are more compatible with solar technology. On the other hand, for certain operations such as high-temperature catalytic and distillation processes employed in petroleum refining, there is no ready alternative to presently employed fluid fuels.
Date: April 1, 1980
Creator: May, E.K.
Partner: UNT Libraries Government Documents Department

Value of solar thermal industrial process heat

Description: This study estimated the value of solar thermal-generated industrial process heat (IPH) as a function of process heat temperature. The value of solar thermal energy is equal to the cost of producing energy from conventional fuels and equipment if the energy produced from either source provides an equal level of service. This requirement put the focus of this study on defining and characterizing conventional process heat equipment and fuels. Costs (values) were estimated for 17 different design points representing different combinations of conventional technologies, temperatures, and fuels. Costs were first estimated for median or representative conditions at each design point. The cost impact of capacity factor, efficiency, fuel escalation rate, and regional fuel price differences were then evaluated by varying each of these factors within credible ranges.
Date: March 1, 1986
Creator: Brown, D.R.; Fassbender, L.L. & Chockie, A.D.
Partner: UNT Libraries Government Documents Department

Feasibility evaluation for solar industrial process heat applications

Description: An analytical method for assessing the feasibility of Solar Industrial Process Heat applications has been developed and implemented in a flexible, fast-calculating computer code - PROSYS/ECONMAT. The performance model PROSYS predicts long-term annual energy output for several collector types, including flat-plate, nontracking concentrator, one-axis tracking concentrator, and two-axis tracking concentrator. Solar equipment cost estimates, annual energy capacity cost, and optional net present worth analysis are provided by ECONMAT. User input consists of detailed industrial process information and optional economic parameters. Internal program data includes meteorological information for 248 US sites, characteristics of more than 20 commercially available collectors representing several generic collector types, and defaults for economic parameters. Because a fullscale conventional back-up fuel system is assumed, storage is not essential and is not included in the model.
Date: January 1, 1980
Creator: Stadjuhar, S. A.
Partner: UNT Libraries Government Documents Department

Second quarterly technical status report, July 1, 1978 through September 30, 1978

Description: The status of the program to draft programmatic environmental impact statements of the DOE solar agricultural and industrial process heat program is reported. The second coordination meeting, site visits to the demonstration facilities, and data collection are described. The sites visited are listed. (WHK)
Date: October 18, 1978
Partner: UNT Libraries Government Documents Department

Putting the sun to work in industry

Description: Industrial applications of solar energy are discussed in this illustrated brochure along with the DOE and SERI industrial process heat field test programs. The future prospects and advantages of solar industrial process heat are also discussed. (MHR)
Date: September 1, 1979
Partner: UNT Libraries Government Documents Department

Operation and design of selected industrial process heat field tests

Description: The DOE program of solar industrial process heat field tests has shown solar energy to be compatible with numerous industrial needs. Both the operational projects and the detailed designs of systems that are not yet operational have resulted in valuable insights into design and hardware practice. Typical of these insights are the experiences discussed for the four projects reviewed. Future solar IPH systems should benefit greatly not only from the availability of present information, but also from the wealth of operating experience from projects due to start up in 1981.
Date: February 1, 1981
Creator: Kearney, D. W.
Partner: UNT Libraries Government Documents Department