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Characterization, Analysis, and Optimization of Rotary Displacer Stirling Engines

Description: This work focuses on an innovative Rotary Displacer SE (RDSE) configuration for Stirling engines (SEs). RDSE features rotary displacers instead of reciprocating displacers (found in conventional SE configurations), as well as combined compression and expansion spaces. Guided by the research question "can RDSE as a novel configuration achieve a higher efficiency compared to conventional SE configurations at comparable operating conditions?", the goal of this study is to characterize, analyze, an… more
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Date: December 2019
Creator: Bagheri, Amirhossein
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Preliminary Analysis of an Innovative Rotary Displacer Stirling Engine

Description: Stirling engines are an external combustion heat engine that converts thermal energy into mechanical work that a closed cycle is run by cyclic compression and expansion of a work fluid (commonly air or Helium) in which, the working fluid interacts with a heat source and a heat sink and produces network. The engine is based on the Stirling cycle which is a subset of the Carnot cycle. The Stirling cycle has recently been receiving renewed interest due to some of its key inherent advantages. In p… more
Date: December 2015
Creator: Bagheri, Amirhossein
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Stirling Engines and Irrigation Pumping

Description: This report was prepared in support of the Renewable Energy Applications and Training Project that is sponsored by the U.S. Agency for International Development for which ORNL provides technical assistance. It briefly outlines the performance that might be achievable from various kinds of Stirling-engine-driven irrigation pumps. Some emphasis is placed on the very simple liquid-piston engines that have been the subject of research in recent years and are suitable for manufacture in less well-de… more
Date: January 1, 1987
Creator: West, C.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Design, fabrication, and testing of a sodium evaporator for the STM4-120 kinematic Stirling engine

Description: This report describes the development and testing of a compact heat-pipe heat exchanger kW(e) designed to transfer thermal energy from hot combustion gases to the heater tubes of a 25-kW(e) Stirling engine. In this system, sodium evaporates from a surface that is heated by a stream of hot gases. The liquid metal then condenses on the heater tubes of a Stirling engine, where energy is transferred to the engine`s helium working fluid. Tests on a prototype unit illustrated that a compact (8 cm {ti… more
Date: May 1, 1995
Creator: Rawlinson, K.S. & Adkins, D.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Status of the Boeing Dish Engine Critical Component Project

Description: The Boeing Company's Dish Engine Critical Component (DECC) project started in April of 1998. It is a continuation of a solar energy program started by McDonnell Douglas (now Boeing) and United Stirling of Sweden in the mid 1980s. The overall objectives, schedule, and status of this project are presented in this paper. The hardware test configuration, hardware background, operation, and test plans are also discussed. A summary is given of the test data, which includes the daily power performance… more
Date: January 8, 1999
Creator: Braun, Harry W.; Diver, Richard B.; Nelving, Hans & Stone, Kenneth W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Heat Pipe Solar Receiver Development Activities at Sandia National Laboratories

Description: Over the past decade, Sandia National Laboratories has been involved in the development of receivers to transfer energy from the focus of a parabolic dish concentrator to the heater tubes of a Stirling engine. Through the isothermal evaporation and condensation of sodium. a heat-pipe receiver can efficiently transfer energy to an engine's working fluid and compensate for irregularities in the flux distribution that is delivered by the concentrator. The operation of the heat pipe is completely p… more
Date: January 8, 1999
Creator: Adkins, D. R.; Andraka, C. E.; Moreno, J. B.; Moss, T. A.; Rawlinson, K. S. & Showalter, S. K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Development of a 75-kW heat-pipe receiver for solar heat-engines

Description: A program is now underway to develop commercial power conversion systems that use parabolic dish mirrors in conjunction with Stirling engines to convert solar energy to electric power. In early prototypes, the solar concentrator focused light directly on the heater tubes of the Stirling engine. Liquid-metal heat-pipes are now being developed to transfer energy from the focus of the solar concentrator to the heater tubes of the engine. The dome-shaped heat-pipe receivers are approximately one-ha… more
Date: May 1, 1995
Creator: Adkins, D. R.; Andraka, C. E. & Moss, T. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Rolling Thunder -- Integration of the Solo 161 Stirling engine with the CPG-460 solar concentrator at Ft. Huachuca

Description: Project Rolling Thunder is a dish/Stirling demonstration project at Ft. Huachuca, a US Army fort in southeastern Arizona (Huachuca means rolling thunder in Apache). It has been supported by the Strategic Environmental Research and Development Program (SERDP), a cooperative program between the Department of Defense (DoD) and the Department of Energy (DOE). As part of a 1992 SERDP project, Cummins Power Generation, Inc. (CPG) installed a CPG 7 kW(c) dish/Stirling system at the Joint Interoperabil… more
Date: September 1, 1998
Creator: Diver, Richard B.; Moss, Timothy A.; Goldberg, Vern; Thomas, Gary & Beaudet, Andre
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Solar-Electric Dish Stirling System Development

Description: Electrical power generated with the heat from the sun, called solar thermal power, is produced with three types of concentrating solar systems - trough or line-focus systems; power towers in which a centrally-located thermal receiver is illuminated with a large field of sun-tracking heliostats; and dish/engine systems. A special case of the third type of system, a dish/Stirling system, is the subject of this paper. A dish/Stirling system comprises a parabolic dish concentrator, a thermal receiv… more
Date: December 31, 1997
Creator: Mancini, T.R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Statistical Identification of Effective Input Variables

Description: This report provides background and procedural information for the use of a general-purpose Stirling-engine analysis code developed at Argonne National Laboratory and available through the National Energy Software Center. Different engine configurations are easily specified, or the user may make use of provided data for existing engines, both kinematic and free piston. The code models heat transfer and fluid mechanics throughout the engine and accounts for system energy flows and losses. Good a… more
Date: September 1982
Creator: Vaurio, J. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Concentrating Solar Power Program overview

Description: Over the last decade, the US solar thermal industry has established a track record in the power industry by building and operating utility-scale power plants with a combined rated capacity of 354 megawatts (MW). The technology used in these power plants is based on years of research and development (R and D), much of it sponsored by the US Department of Energy (DOE). DOE`s Concentrating Solar Power (CSP) Program is collaborating with its partners in the private sector to develop two new solar t… more
Date: April 1, 1998
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Dish/Stirling for Department of Defense applications final report

Description: This report describes a Strategic Environmental Research and Development Program (SERDP) project to field a dish/Stirling system at a southwestern US military facility. This project entitled ``Dish/Stirling for DoD Applications`` was started in August 1993 and was completed in September 1996. The project`s objective was to assist military facilities to field and evaluate emerging environmentally sound and potentially economical dish/Stirling technology. Dish/Stirling technology has the potentia… more
Date: March 1, 1997
Creator: Diver, R. B. & Menicucci, D. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Solar Heat-Pipe Receiver Wick Modeling

Description: Stirling-cycle engines have been identified as a promising technology for the conversion of concentrated solar energy into usable electrical power. In previous experimented work, we have demonstrated that a heat pipe receiver can significantly improve system performance-over a directly-illuminated heater head. The design and operating conditions of a heat pipe receiver differ significantly from typical laboratory heat pipes. New wick structures have been developed to exploit the characteristics… more
Date: December 21, 1998
Creator: Andraka, C. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Felt-metal-wick heat-pipe solar receiver

Description: Reflux heat-pipe receivers have been identified as a desirable interface to couple a Stirling-cycle engine with a parabolic dish solar concentrator. The reflux receiver provides power nearly isothermally to the engine heater heads while decoupling the heater head design from the solar absorber surface design. The independent design of the receiver and engine heater head leads to higher system efficiency. Heat pipe reflux receivers have been demonstrated at approximately 65 kW{sub t} power throu… more
Date: December 31, 1994
Creator: Andraka, C. E.; Adkins, D. R.; Moss, T. A.; Cole, H. M. & Andreas, N. H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

The Utility-Scale Joint-Venture Program

Description: The Department of Energy`s Utility-Scale Joint-Venture (USJV) Program was developed to help industry commercialize dish/engine electric systems. Sandia National Laboratories developed this program and has placed two contracts, one with Science Applications International Corporation`s Energy Projects Division and one with the Cummins Power Generation Company. In this paper we present the designs for the two dish/Stirling systems that are being developed through the USJV Program.
Date: June 1, 1994
Creator: Gallup, D. R. & Mancini, T. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Stirling-Engine Thermodynamic Analysis: A Users Guide To SEAM1

Description: From Abstract: This report provides background and procedural information for the use of a general-purpose Stirling-engine analysis code developed at Argonne National Laboratory and available through the National Energy Software Center. Different engine configurations are easily specified, or the user may make use of provided data for existing engines, both kinematic and free piston. The code models heat transfer and fluid mechanics throughout the engine and accounts for system energy flows and… more
Date: September 1982
Creator: Heames, T. J.; Uherka, D. J.; Zabel, J. C & Daley, J. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

An investigation of corrosion in liquid-metal heat pipes

Description: Research is underway to develop a 75-kW heat pipe to transfer solar energy from the focus of a parabolic dish concentrator to the heater tubes of a Stirling engine. The high flux levels and high total power level encountered in this application have made it necessary to use a high-performance wick structure with fibers on the order of 4 to 8 microns in diameter. This fine wick structure is highly susceptible to corrosion damage and plugging, as dissolved contaminants plate out on the evaporator… more
Date: August 1, 1998
Creator: Adkins, D. R.; Rawlinson, K. S.; Andraka, C. E.; Showalter, S. K.; Moreno, J. B.; Moss, T. A. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Solar heat pipe testing of the Stirling thermal motors 4-120 Stirling engine

Description: Stirling-cycle engines have been identified as a promising technology for the conversion of concentrated solar energy into usable electrical power. A 25kW electric system takes advantage of existing Stirling-cycle engines and existing parabolic concentrator designs. In previous work, the concentrated sunlight impinged directly on the heater head tubes of the Stirling Thermal Motors (STM) 4-120 engine. A Sandia-designed felt-metal-wick heat pipe receiver was fitted to the STM 4-120 engine for on… more
Date: July 1, 1996
Creator: Andraka, C. E.; Rawlinson, K. S.; Moss, T. A.; Adkins, D. R.; Moreno, J. B.; Gallup, D. R. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Results of the Boeing/DOE DECC Phase 1 stirling engine project

Description: Phase I of Boeing Company/DOE Dish Engine Critical Component (DECC) Project started in April of 1998 and was completed in 1999. The Phase I objectives, schedule, and test results are presented in this paper. These data shows the power, energy, and mirror performance are comparable to that when the hardware was first manufactured 15 years ago. During the Phase I and initial Phase II test period the on-sun system accumulated over 3,800 hours of solar-powered operating time, accumulated over 4,500… more
Date: March 2, 2000
Creator: Stone, Kenneth W.; Clark, Terry; Nelving, Hans & Diver, Richard B., Jr.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Solar dish/engine systems

Description: Solar dish/engine systems convert the energy from the sun into electricity at a very high efficiency. Using a mirror array formed into the shape of a dish, the solar dish focuses the sun's rays onto a receiver. The receiver transmits the energy to an engine that generates electric power. Because of the high concentration ratios achievable with parabolic dishes and the small size of the receiver, solar dishes are efficient at collecting solar energy at very high temperatures. Tests of prototype … more
Date: April 1, 1998
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Building, Testing, and Post Test Analysis of Durability Heat Pipe No.6

Description: The Solar Thermal Program at Sandia supports work developing dish/Stirling systems to convert solar energy into electricity. Heat pipe technology is ideal for transferring the energy of concentrated sunlight from the parabolic dish concentrators to the Stirling engine heat tubes. Heat pipes can absorb the solar energy at non-uniform flux distributions and release this energy to the Stirling engine heater tubes at a very uniform flux distribution thus decoupling the design of the engine heater h… more
Date: March 1, 2002
Creator: Moss, Timothy A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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