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Underground home A/C system. Final report

Description: The purpose of the project was to transfer the heat of house air into the earth through an underground piping system, return the cooler to the house and disperse it throughout the house. The principle of the idea has been achieved, but not to the extent desired. It was originally hoped that the system would allow temperatures in the house to reach a maximum of 80/sup 0/ even during days where outside temperatures reached high 90/sup 0/. So far, a differential of 6/sup 0/ to 8/sup 0/ has been achieved.
Date: June 30, 1981
Creator: Outland, B.W.
Partner: UNT Libraries Government Documents Department

Research on solar heating and cooling. Technical status progress report, March 1996--April 1996

Description: The University of Wisconsin Solar Energy Laboratory is supported by the Department of Energy for the period of April 1995 through March 1996. The grant covers 10 objectives, some of which started in September 1995. Most of the objectives are being worked on as student MS or PhD theses and they form the basis of this report. The students working on some of these projects are not being supported by DOE and are so indicated. A number of additional projects that were not in the grant proposal (and thus are not funded by this DOE Grant), are important to the US solar program, and therefore are included here. Some of the topics discussed in this report are: solar photovoltaic hot water systems; solar heat pump water heating systems; and development of computer simulation model for solar energy systems.
Date: August 1, 1996
Partner: UNT Libraries Government Documents Department

Open cycle liquid desiccant dehumidifier and hybrid solar/electric absorption refrigeration system. Annual report, January 1993--December 1993. Calendar year 1993

Description: This annual report presents work performed during calendar year 1993 by the Florida Solar Energy Center under contract to the US Department of Energy. Two distinctively different solar powered indoor climate control systems were analyzed: the open cycle liquid desiccant dehumidifier, and an improved efficiency absorption system which may be fired by flat plate solar collectors. Both tasks represent new directions relative to prior FSEC research in Solar Cooling and Dehumidification.
Date: April 1, 1995
Creator: Nimmo, B.G. & Thornbloom, M.D.
Partner: UNT Libraries Government Documents Department

Thermally-induced ventilation in atria: an atrium classification scheme and promising test sites

Description: In establishing the atrium classification scheme, specific attention was given to: climate (hot-arid, warm-humid, and temperate), atrium configuration (open, closed, and adjustable tops), and thermal mechanism (natural convection, radiative cooling, shading, and others). Application of the resulting three-dimensional (three-coordinate) matrix was considered and tested. Although the testing was for purposes of checking scheme application, the procedure indicated that most of the atria examined were of the adjustable-top configuration with daylighting the principal functional mode. However, it was noted that thermally-induced air flow was present in many of the atria classified. In the identification of promising test sites it was noted that there appears to be a shortage of buildings which meet the atrium definition. Consequently, prospective test sites were categorized as follows based upon anticipated value to the study: commercial atria already constructed, commercial atria planned or under construction, and residential atria already constructed.
Date: June 1, 1981
Partner: UNT Libraries Government Documents Department

Performance estimation using correlation methods

Description: Correlation methods of prediction have advantages in greatly simplifying the time and complexity of performance predictions of passive solar buildings but are severely constrained in the number of variables which can be considered. Their accuracy is generally adequate for design purposes provided they are applied to buildings which correspond reasonably closely to the reference designs used in developing the correlations. The most simplified correlation procedures (such as the SLR method) are amenable to use with hand calculators, especially if pre-calculated tables are available corresponding to the weather data for the location of interest. When reporting the results of these calculations, the designer should be especially careful to specify the range of validity of the analysis, especially as pertains to both operating characteristics and design parameters. Correlation techniques are especially amenable to use in microcomputer routines which can be used in a design office. Very quick answers can be obtained during the schematic design and design development phases of a building to aid in deciding between different design options. This would include trade-offs between various conservation options and passive solar options.
Date: January 1, 1980
Creator: Balcomb, J.D.
Partner: UNT Libraries Government Documents Department

Energy savings obtainable through passive solar techniques

Description: A passive solar energy system is one in which the thermal energy flow is by natural means, that is by radiation, conduction, or natural convection. The purpose of the paper is to provide a survey of passive solar heating experience, especially in the US. Design approaches are reviewed and examples shown. Misconceptions are discussed. Advantages are listed. The Los Alamos program of performance simulation and evaluation is described and a simplified method of performance estimation is outlined.
Date: January 1, 1980
Creator: Balcomb, J.D.
Partner: UNT Libraries Government Documents Department

Solar atrium: a hybrid solar heating and cooling system. Technical progress report No. 6, December 19, 1978-March 19, 1979

Description: A program of applied research is described for the design, construction and monitoring of an innovative concept of solar heating and cooling called solar atrium adaptable to residences and smaller commercial and institutional buildings. It is designed to be constructed of materials and equipment that are economical and readily available. Progress on construction is reported. (MHR)
Date: January 1, 1979
Creator: Ueland, M.
Partner: UNT Libraries Government Documents Department

State of the art in passive solar heating and cooling

Description: Progress since the Albuquerque Passive Conference is discussed in terms of the major design approaches in buildings actually being constructed. Advantages and problem areas of each are described. Major areas where further work is needed are presented in detail.
Date: January 1, 1978
Creator: Balcomb, J.D.
Partner: UNT Libraries Government Documents Department

Radiative and passive cooling

Description: The two primary accomplishments of the project to date are (1) the construction of a computer model to predict the infrared spectral radiance of the atmosphere under various meteorological conditions of temperature, water vapor profiles, and cloud cover; and (2) the design, testing, and installation of several spectral radiometers for the routine measurement of atmospheric infrared radiance. Emphasis has been placed on the study of the atmospheric radiance which would be absorbed by a thermal radiating surface exposed to the sky because the amount of radiation emmited from a given system can usually be calculated in a straightforward manner.
Date: September 1, 1978
Creator: Martin, M. & Berdahl, P.
Partner: UNT Libraries Government Documents Department

Supplementary material on passive solar heating concepts. A compilation of published articles

Description: A compilation of published articles and reports dealing with passive solar energy concepts for heating and cooling buildings is presented. The following are included: fundamental of passive systems, applications and technical analysis, graphic tools, and information sources. (MHR)
Date: May 1, 1979
Partner: UNT Libraries Government Documents Department

Passive cooling program element. [Skytherm system]

Description: An outline of the Passive Cooling R and D program element is presented with significant technical achievements obtained during FY 1978. Passive cooling mechanisms are enumerated and a survey of ongoing projects is made in the areas of cooling resource assessment and system development. Results anticipated within the next fiscal year are discussed and the direction of the R and D effort is indicated. Passive cooling system development has centered primarily about the Skytherm system. Two projects are underway to construct such systems in regions having a higher cooling load than the original Skytherm site at Atascadero, California. Component development and commercialization studies are major goals of these two projects and a third project at Atascadero. A two-story passive cooling test module has been built to study radiative, evaporative and convective cooling effects in a structure making use of the thermosiphon principle, but not equipped with a roof pond.
Date: September 1, 1978
Creator: Wahlig, M. & Martin, M.
Partner: UNT Libraries Government Documents Department

Sun-shades as a passive cooling element

Description: A discussion of the importance of proper sun-shade design is presented by showing results of thermal performance evaluation of a building with and without sun-shades. The analysis was carried out by using a simulation model developed by Shaviv and Shaviv. The criteria for evaluating sunshades is based on the total energy consumption of the building for cooling, heating, and artificial lighting. We find that the best solution for shading is external sun-shades and we present a method developed by Shaviv for their design. Several designs of external sun-shades are presented.
Date: January 1, 1980
Creator: Shaviv, E
Partner: UNT Libraries Government Documents Department

Model document for code officials on solar heating and cooling of buildings. First draft

Description: The primary purpose of this document is to promote the use and further development of solar energy through a systematic categorizing of all the attributes in a solar energy system that may impact on those requirements in the nationally recognized model codes relating to the safeguard of life or limb, health, property, and public welfare. Administrative provisions have been included to integrate this document with presently adopted codes, so as to allow incorporation into traditional building, plumbing, mechanical, and electrical codes. In those areas where model codes are not used it is recommended that the requirements, references, and standards herein be adopted to regulate all solar energy systems. (MOW)
Date: March 1, 1979
Partner: UNT Libraries Government Documents Department

Colorado State University program for developing, testing, evaluating and optimizing solar heating and cooling systems. Project status report, December 1994--January 1995

Description: This progress report summarizes activities, experiments, and testing performed on a variety of solar heating and cooling systems in conjunction with four technical research tasks. Areas of focus include: Unique solar system components; Rating and certification of domestic water heating systems; and, Advanced residential solar domestic hot water systems.
Date: March 1, 1995
Partner: UNT Libraries Government Documents Department

Potential of solar cooling systems for peak demand reduction

Description: We investigated the technical feasibility of solar cooling for peak demand reduction using a building energy simulation program (DOE2.1D). The system studied was an absorption cooling system with a thermal coefficient of performance of 0.8 driven by a solar collector system with an efficiency of 50% with no thermal storage. The analysis for three different climates showed that, on the day with peak cooling load, about 17% of the peak load could be met satisfactorily with the solar-assisted cooling system without any thermal storage. A performance availability analysis indicated that the solar cooling system should be designed for lower amounts of available solar resources that coincide with the hours during which peak demand reduction is required. The analysis indicated that in dry climates, direct-normal concentrating collectors work well for solar cooling; however, in humid climates, collectors that absorb diffuse radiation work better.
Date: November 1, 1994
Creator: Pesaran, A.A. & Neymark, J.
Partner: UNT Libraries Government Documents Department

SOLAR POWERING OF HIGH EFFICIENCY ABSORPTION CHILLER

Description: This is the Final Report for two solar cooling projects under this Cooperative Agreement. The first solar cooling project is a roof-integrated solar cooling and heating system, called the Power Roof{trademark}, which began operation in Raleigh, North Carolina in late July 2002. This system provides 176 kW (50 ton) of solar-driven space cooling using a unique nonimaging concentrating solar collector. The measured performance of the system during its first months of operation is reported here, along with a description of the design and operation of this system. The second solar cooling system, with a 20-ton capacity, is being retrofit to a commercial office building in Charleston, South Carolina but has not yet been completed.
Date: November 15, 2004
Creator: Gee, Randy C.
Partner: UNT Libraries Government Documents Department

Solar collectors for cooling applications

Description: Collector research projects funded by the R and D Branch for Heating and Cooling, Department of Energy, which have direct applicability as cooling machine prime movers, are described. Performance curves are given where they are available along with the development status and the market availability. (MHR)
Date: January 1, 1978
Creator: Collier, R.K.
Partner: UNT Libraries Government Documents Department

Dynamic performance of packed-bed dehumidifiers: experimental results from the SERI desiccant test loop

Description: Discussed are the design and construction of a desiccant test loop and results of tests with a silica-gel-packed bed. The test loop consists of two centrifugal fans, two duct heaters, a steam humidifier, 24.4m (80 ft) of 30-cm (12-in.) circular duct, instrumentation, and a test section. The loop is capable of testing adsorption and desorption modes at flow rates up to 0.340 kg/s (600 scfm) and at regeneration temperatures up to 120/sup 0/C (248/sup 0/F). Tests of a 74-cm(29-in.)-diameter, 3.2-cm(1.25-in.)-thick silica gel bed indicated that mass transfer occurs more readily in the adsorption direction than in the desorption direction. Pressure drop data indicated that the resistance of each of the two screens that hold the silica gel in place was equivalent to 2.5-cm(1-in.) of silica gel due to plugging. Results of the tests were also used to validate a SERI desiccant computer model, DESSIM.
Date: August 1, 1982
Creator: Kutscher, C F & Barlow, R S
Partner: UNT Libraries Government Documents Department

Development and testing of the Solar Control Corporation modular Controller and Solarstat Subsystem. Final report

Description: This document summarizes the final results of contract NAS8-32258 Solar Control Corporation, for the additional development work on their existing Controller and Solarstat Subsystem for use with solar heating and cooling systems. It discusses the intended use of the final report, describes the deliverable end items, lists program objectives, and relates how they were accomplished. The report shows that the products developed are marketable and suitable for public use.
Date: August 1, 1979
Creator: Hankins, J.D.
Partner: UNT Libraries Government Documents Department

Development and testing of the Sunkeeper Control Corporation integrated programmable electronic controller and hydronics package. Final report

Description: This document summarizes the final results of contract NAS8-32257 with Sunkeeper Control Corporation (now Andover Controls) of Andover, Massachusetts for the additional development work on their existing programmable electronic controller and hydronic package for use with solar heating and cooling systems. It discusses the intended use of the final report, describes the deliverable end items, lists program objectives and relates how they were accomplished. The report shows that the products developed are marketable and suitable for public use.
Date: January 1, 1979
Creator: Hankins, J.D
Partner: UNT Libraries Government Documents Department

Building-integrated photovoltaics

Description: This is a study of the issues and opportunities for building-integrated PV products, seen primarily from the perspective of the design community. Although some quantitative analysis is included, and limited interviews are used, the essence of the study is qualitative and subjective. It is intended as an aid to policy makers and members of the technical community in planning and setting priorities for further study and product development. It is important to remember that the success of a product in the building market is not only dependent upon its economic value; the diverse group of building owners, managers, regulators, designers, tenants and users must also find it practical, aesthetically appealing and safe. The report is divided into 11 sections. A discussion of technical and planning considerations is followed by illustrative diagrams of different wall and roof assemblies representing a range of possible PV-integration schemes. Following the diagrams, several of these assemblies are then applied to a conceptual test building which is analyzed for PV performance. Finally, a discussion of mechanical/electrical building products incorporating PVs is followed by a brief surveys of cost issues, market potential and code implications. The scope of this report is such that most of the discussion does not go beyond stating the questions. A more detailed analysis will be necessary to establish the true costs and benefits PVs may provide to buildings, taking into account PV power revenue, construction costs, and hidden costs and benefits to building utility and marketability.
Date: January 1, 1993
Partner: UNT Libraries Government Documents Department

Prototype solar heating and cooling systems. Monthly progress reports

Description: This report is a collection of monthly status reports from the AiResearch Manufacturing Company covering the period January 1, 1978, through March 31, 1978. AiResearch is developing eight prototype solar heating and cooling systems. This effort calls for the development, manufacture, test, system installation, maintenance, problem resolution, and performance evaluation. The systems are 3-, 25-, and 75-ton size units.
Date: April 1, 1978
Partner: UNT Libraries Government Documents Department

Reliability and maintainability seminar: summary of proceedings

Description: The following are described briefly: Overview of the Federal Reliability and Maintainability Program Plan, Summary of Proceedngs, Overview of Southern Solar Energy Center Programs, and Solar Domestic Hot Water Design Guidelines Handbook. Also included are the Seminar Agenda and the list of Seminar Attendees. (MHR)
Date: April 1, 1981
Creator: Beek, C.R.
Partner: UNT Libraries Government Documents Department