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Sample records for multi-mission radioisotope thermoelectric

  1. Powering Curiosity: Multi-Mission Radioisotope Thermoelectric Generators |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy Powering Curiosity: Multi-Mission Radioisotope Thermoelectric Generators Powering Curiosity: Multi-Mission Radioisotope Thermoelectric Generators January 29, 2008 - 7:06pm Addthis Mars Science Laboratory, aka Curiosity, is part of NASA's Mars Exploration Program, a long-term program of robotic exploration of the Red Planet. It's powered by the Multi-Mission Radioisotope Thermoelectric Generator (MMRTG). Photo courtesy of NASA/JPL-Caltech. Mars Science Laboratory, aka

  2. Radiation Environments and Exposure Considerations for the Multi-Mission Radioisotope Thermoelectric Generator

    SciTech Connect (OSTI)

    Kelly, William M.; Low, Nora M.; Zillmer, Andrew; Johnson, Gregory A.; Normand, Eugene

    2006-01-20

    The Multi-Mission Radioisotope Thermoelectric Generator (MMRTG) is the next generation (RTG) being developed by DOE to provide reliable, long-life electric power for NASA's planetary exploration programs. The MMRTG is being developed by Pratt and Whitney Rocketdyne and Teledyne Energy Systems Incorporated (TESI) for use on currently planned and projected flyby, orbital and planet landing missions. This is a significant departure from the design philosophy of the past which was to match specific mission requirements to RTG design capabilities. Undefined mission requirements provide a challenge to system designers by forcing them to put a design envelope around 'all possible missions'. These multi-mission requirements include internal and external radiation sources. Internal sources include the particles ejected by decaying Pu-238 and its daughters plus particles resulting from the interaction of these particles with other MMRTG materials. External sources include the full spectrum of charged particle radiation surrounding planets with magnetic fields and the surfaces of extraterrestrial objects not shielded by magnetic fields. The paper presents the results of investigations into the environments outlined above and the impact of radiation exposure on potential materials to be used on MMRTG and ground support personnel. Mission requirements were also reviewed to evaluate total integrated dose and to project potential shielding requirements for materials. Much of the information on mission shielding requirements was provided by NASA's Jet Propulsion Laboratory. The primary result is an ionizing radiation design curve which indicates the limits to which a particular mission can take the MMRTG in terms of ionizing radiation exposure. Estimates of personnel radiation exposure during ground handling are also provided.

  3. Mass Properties Testing and Evaluation for the Multi-Mission Radioisotope Thermoelectric Generator

    SciTech Connect (OSTI)

    Felicione, Frank S.

    2009-12-01

    Mass properties (MP) measurements were performed for the Multi-Mission Radioisotope Thermoelectric Generator (MMRTG), serial number (S/N) 0X730401, the power system designated for the Mars Science Laboratory (MSL) mission. Measurements were made using new mounting fixtures at the mass properties testing station in the Idaho National Laboratory (INL) Space and Security Power Systems Facility (SSPSF). The objective of making mass properties measurements was to determine the generator’s flight configured mass and center of mass or center of gravity (CG). Using an extremely accurate platform scale, the mass of the as-tested generator was determined to be 100.117 ± 0.007 lb. Weight accuracy was determined by checking the platform scale with calibrated weights immediately prior to weighing the MMRTG.a CG measurement accuracy was assessed by surrogate testing using an inert mass standard for which the CG could be readily determined analytically. Repeated testing using the mass standard enabled the basic measurement precision of the system to be quantified in terms of a physical confidence interval about the measured CG position. However, repetitious testing with the MMRTG itself was not performed in deference to the gamma and neutron radiation dose to operators and the damage potential to the flight unit from extra handling operations. Since the mass standard had been specially designed to have a total weight and CG location that closely matched the MMRTG, the uncertainties determined from its testing were assigned to the MMRTG as well. On this basis, and at the 99% confidence level, a statistical analysis found the direct, as-measured MMRTG-MSL CG to be located at 10.816 ± 0.0011 in. measured perpendicular from the plane of the lower surface of the generator’s mounting lugs (Z direction), and offset from the generator’s long axis centerline in the X and Y directions by 0.0968 ± 0.0040 in. and 0.0276 ± 0.0026 in., respectively. These uncertainties are based simply on the

  4. Radioisotope Power System Delivery, Ground Support and Nuclear Safety Implementation: Use of the Multi-Mission Radioisotope Thermoelectric Generator for the NASA's Mars Science Laboratory

    SciTech Connect (OSTI)

    S.G. Johnson; K.L. Lively; C.C. Dwight

    2014-07-01

    Radioisotope power systems have been used for over 50 years to enable missions in remote or hostile environments. They are a convenient means of supplying a few milliwatts up to a few hundred watts of useable, long-term electrical power. With regard to use of a radioisotope power system, the transportation, ground support and implementation of nuclear safety protocols in the field is a complex process that requires clear identification of needed technical and regulatory requirements. The appropriate care must be taken to provide high quality treatment of the item to be moved so it arrives in a condition to fulfill its missions in space. Similarly it must be transported and managed in a manner compliant with requirements for shipment and handling of special nuclear material. This presentation describes transportation, ground support operations and implementation of nuclear safety and security protocols for a radioisotope power system using recent experience involving the Multi-Mission Radioisotope Thermoelectric Generator for National Aeronautics and Space Administration’s Mars Science Laboratory, which launched in November of 2011.

  5. OSTIblog Articles in the Radioisotope Thermoelectric Generator Topic |

    Office of Scientific and Technical Information (OSTI)

    OSTI, US Dept of Energy Office of Scientific and Technical Information Radioisotope Thermoelectric Generator

  6. Radioisotope thermoelectric generator reliability and safety

    SciTech Connect (OSTI)

    Campbell, R.; Klein, J.

    1989-01-01

    There are numerous occasions when a planetary mission requires energy in remote areas of the solar system. Anytime power is required much beyond Mars or the Asteroid Belts, solar power is not an option. The radioisotope thermoelectric generator (RTG) was developed for such a mission requirement. It is a relatively small and lightweight power source that can produce power under adverse conditions. Just this type of source has become the backbone of the power system for far outer plant exploration. Voyagers I and II are utilizing RTGs, which will soon power the Galileo spacecraft to Jupiter and the Ulysses spacecraft to study the solar poles. The paper discusses RTG operation including thermoelectric design, converter design, general-purpose heat source; RTG reliability including design, testing, experience, and launch approval; and RTG safety issues and methods of ensuring safety.

  7. Radioisotope thermoelectric generator transport trailer system

    SciTech Connect (OSTI)

    Ard, K.E.; King, D.A.; Leigh, H.; Satoh, J.A.

    1995-01-20

    The Radioisotope Thermoelectric Generator (RTG) Transportation System, designated as System 100, comprises four major systems. The four major systems are designated as the Packaging System (System 120), Trailer System (System 140), Operations and Ancillary Equipment System (System 160), and Shipping and Receiving Facility Transport System (System 180). Packaging System (System 120), including the RTG packaging is licensed (regulatory) hardware; it is certified by the U.S. Department of Energy to be in accordance with Title 10, {ital Code} {ital of} {ital Federal} {ital Regulations}, Part 71 (10 CFR 71). System 140, System 160, and System 180 are nonlicensed (nonregulatory) hardware. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}

  8. Procurement of a fully licensed radioisotope thermoelectric generator transportation system

    SciTech Connect (OSTI)

    Adkins, H.E.; Bearden, T.E.

    1990-10-01

    A fully licensed transportation system for Radioisotope Thermoelectric Generators and Light-Weight Radioisotope Heater Units is currently being designed and built. The system will comply with all applicable US Department of Transportation regulations without the use of a DOE Alternative.'' The US Department of Transportation has special double containment'' requirements for plutonium. The system packaging uses a doubly contained bell jar'' concept. A refrigerated trailer is used for cooling the high-heat payloads. The same packaging is used for both high- and low-heat payloads. The system is scheduled to be available for use by mid-1992. 4 refs., 4 figs., 2 tabs.

  9. Radioisotope thermoelectric generator transportation system subsystem 143 software development plan

    SciTech Connect (OSTI)

    King, D.A.

    1994-11-10

    This plan describes the activities to be performed and the controls to be applied to the process of specifying, developing, and qualifying the data acquisition software for the Radioisotope Thermoelectric Generator (RTG) Transportation System Subsystem 143 Instrumentation and Data Acquisition System (IDAS). This plan will serve as a software quality assurance plan, a verification and validation (V and V) plan, and a configuration management plan.

  10. Real-time monitoring during transportation of a radioisotope thermoelectric generator (RTG) using the radioisotope thermoelectric generator transportation system (RTGTS)

    SciTech Connect (OSTI)

    Pugh, B.K.

    1997-01-01

    The Radioisotopic Thermoelectric Generators (RTGs) that will be used to support the Cassini mission will be transported in the Radioisotope Thermoelectric Generator Transportation System (RTGTS). To ensure that the RTGs will not be affected during transportation, all parameters that could adversely affect RTG{close_quote}s performance must be monitored. The Instrumentation and Data Acquisition System (IDAS) for the RTGTS displays, monitors, and records all critical packaging and trailer system parameters. The IDAS also monitors the package temperature control system, RTG package shock and vibration data, and diesel fuel levels for the diesel fuel tanks. The IDAS alarms if any of these parameters reach an out-of-limit condition. This paper discusses the real-time monitoring during transportation of the Cassini RTGs using the RTGTS IDAS. {copyright} {ital 1997 American Institute of Physics.}

  11. Real-time monitoring during transportation of a radioisotope thermoelectric generator (RTG) using the radioisotope thermoelectric generator transportation system (RTGTS)

    SciTech Connect (OSTI)

    Pugh, Barry K.

    1997-01-10

    The Radioisotopic Thermoelectric Generators (RTGs) that will be used to support the Cassini mission will be transported in the Radioisotope Thermoelectric Generator Transportation System (RTGTS). To ensure that the RTGs will not be affected during transportation, all parameters that could adversely affect RTG's performance must be monitored. The Instrumentation and Data Acquisition System (IDAS) for the RTGTS displays, monitors, and records all critical packaging and trailer system parameters. The IDAS also monitors the package temperature control system, RTG package shock and vibration data, and diesel fuel levels for the diesel fuel tanks. The IDAS alarms if any of these parameters reach an out-of-limit condition. This paper discusses the real-time monitoring during transportation of the Cassini RTGs using the RTGTS IDAS.

  12. A facility to remotely assemble radioisotope thermoelectric generators

    SciTech Connect (OSTI)

    Engstrom, J.W.; Goldmann, L.H.; Truitt, R.W.

    1992-07-01

    Radioisotope Thermoelectric Generators (RTGs) are electrical power sources that use heat from decaying radioisotopes to directly generate electrical power. The RTG assembly process is performed in an inert atmosphere inside a large glovebox, which is surrounded by radiation shielding to reduce exposure to neutron and gamma radiation from the radioisotope heat source. In the past, allowable dose rate limits have allowed direct, manual assembly methods; however, current dose rate limits require a thicker radiation shielding that makes direct, manual assembly infeasible. To minimize RTG assembly process modifications, telerobotic systems are being investigated to perform remote assembly tasks. Telerobotic systems duplicate human arm motion and incorporate force feedback sensitivity to handle objects and tools in a human-like manner. A telerobotic system with two arms and a three-dimensional (3-D) vision system can be used to perform remote RTG assembly tasks inside gloveboxes and cells using unmodified, normal hand tools.

  13. A facility to remotely assemble radioisotope thermoelectric generators

    SciTech Connect (OSTI)

    Engstrom, J.W.; Goldmann, L.H.; Truitt, R.W. )

    1993-01-15

    Radioisotope Thermoelectric Generators (RTGs) are electrical power sources that use heat from decaying radioisotopes to directly generate electrical power. The RTG assembly process is performed in an inert atmosphere inside a large glovebox, which is surrounded by radiation shielding to reduce exposure to neutron and gamma radiation from the radioisotope heat source. In the past, allowable dose rate limits have allowed direct, manual assembly methods; however, current dose rate limits require a thicker radiation shielding that makes direct, manual assembly infeasible. To minimize RTG assembly process modifications, telerobotic systems are being investigated to perform remote assembly tasks. Telerobotic systems duplicate human arm motion and incorporate force feedback sensitivity to handle objects and tools in a human-like manner. A telerobotic system with two arms and a three-dimensional (3-D) vision system can be used to perform remote RTG assembly tasks inside gloveboxes and cells using unmodified, normal hand tools.

  14. End-on radioisotope thermoelectric generator impact tests

    SciTech Connect (OSTI)

    Reimus, M.A.H.; Hhinckley, J.E.

    1997-01-01

    The General-Purpose Heat Source (GPHS) provides power for space missions by transmitting the heat of [sup 238]Pu decay to an array of thermoelectric elements in a radioisotope thermoelectric generator (RTG). The modular GPHS design was developed to address both survivability during launch abort and return from orbit. The first two RTG Impact Tests were designed to provide information on the response of a fully loaded RTG to end-on impact against a concrete target. The results of these tests indicated that at impact velocities up to 57 m/s the converter shell and internal components protect the GPHS capsules from excessive deformation. At higher velocities, some of the internal components of the RTG interact with the GPHS capsules to cause excessive localized deformation and failure.

  15. End-on radioisotope thermoelectric generator impact tests

    SciTech Connect (OSTI)

    Reimus, M.A.; Hinckley, J.E.

    1997-01-01

    The General-Purpose Heat Source (GPHS) provides power for space missions by transmitting the heat of {sup 238}Pu decay to an array of thermoelectric elements in a radioisotope thermoelectric generator (RTG). The modular GPHS design was developed to address both survivability during launch abort and return from orbit. The first two RTG Impact Tests were designed to provide information on the response of a fully loaded RTG to end-on impact against a concrete target. The results of these tests indicated that at impact velocities up to 57 m/s the converter shell and internal components protect the GPHS capsules from excessive deformation. At higher velocities, some of the internal components of the RTG interact with the GPHS capsules to cause excessive localized deformation and failure. {copyright} {ital 1997 American Institute of Physics.}

  16. Radioisotope thermoelectric generator/thin fragment impact test

    SciTech Connect (OSTI)

    Reimus, M.A.H.; Hinckley, J.E.

    1998-12-31

    The General-Purpose Heat Source (GPHS) provides power for space missions by transmitting the heat of {sup 238}Pu decay to an array of thermoelectric elements in a radioisotope thermoelectric generator (RTG). Because the potential for a launch abort or return from orbit exists for any space mission, the heat source response to credible accident scenarios is being evaluated. This test was designed to provide information on the response of a loaded RTG to impact by a fragment similar to the type of fragment produced by breakup of the spacecraft propulsion module system (PMS). The results of this test indicated that impact of the RTG by a thin aluminum fragment traveling at 306 m/s may result in significant damage to the convertor housing, failure of one fueled clad, and release of a small quantity of fuel.

  17. Radioisotope thermoelectric generator/thin fragment impact test

    SciTech Connect (OSTI)

    Reimus, M.A.; Hinckley, J.E.

    1998-01-01

    The General-Purpose Heat Source (GPHS) provides power for space missions by transmitting the heat of {sup 238}Pu decay to an array of thermoelectric elements in a radioisotope thermoelectric generator (RTG). Because the potential for a launch abort or return from orbit exists for any space mission, the heat source response to credible accident scenarios is being evaluated. This test was designed to provide information on the response of a loaded RTG to impact by a fragment similar to the type of fragment produced by breakup of the spacecraft propulsion module system (PMS). The results of this test indicated that impact of the RTG by a thin aluminum fragment traveling at 306 m/s may result in significant damage to the converter housing, failure of one fueled clad, and release of a small quantity of fuel. {copyright} {ital 1998 American Institute of Physics.}

  18. Radioisotope thermoelectric generator/thin fragment impact test

    SciTech Connect (OSTI)

    Reimus, M. A. H.; Hinckley, J. E.

    1998-01-15

    The General-Purpose Heat Source (GPHS) provides power for space missions by transmitting the heat of {sup 238}Pu decay to an array of thermoelectric elements in a radioisotope thermoelectric generator (RTG). Because the potential for a launch abort or return from orbit exists for any space mission, the heat source response to credible accident scenarios is being evaluated. This test was designed to provide information on the response of a loaded RTG to impact by a fragment similar to the type of fragment produced by breakup of the spacecraft propulsion module system (PMS). The results of this test indicated that impact of the RTG by a thin aluminum fragment traveling at 306 m/s may result in significant damage to the converter housing, failure of one fueled clad, and release of a small quantity of fuel.

  19. An overview of the Radioisotope Thermoelectric Generator Transporation System Program

    SciTech Connect (OSTI)

    McCoy, J.C.

    1995-10-01

    Radioisotope Thermoelectric Generators (RTG) convert the heat generated by radioactive decay to electricity using thermocouples. RTGs have a long operating life, are reasonably lightweight, and require little or no maintenance once assembled and tested. These factors make RTGs particularly attractive for use in spacecraft However, because RTGs contain significant quantities of radioactive materials, normally plutonium-238 and its decay products, they must be transported in packages built in accordance with Title 10, Code of Federal Regulations, Part 71. The US Department of Energy assigned the Radioisotope Thermoelectric Generator Transportation System (RTGTS) Program to Westinghouse Hanford Company in 1988 to develop a system meeting the regulatory requirements. The program objective was to develop a transportation system that would fully comply with 10 CFR 71 while protecting RTGs from adverse environmental conditions during normal conditions of transport (e.g., shock and heat). The RTGTS is scheduled for completion in December 1996 and will be available to support the National Aeronautics and Space Administrations Cassini mission to Saturn in October 1997. This paper provides an overview of the RTGTS and discusses the hardware being produced. Additionally, various program management innovations mandated by recent ma or changes in the US Department of Energy structure and resources will be outlined.

  20. Thermal vacuum life test facility for radioisotope thermoelectric generators

    SciTech Connect (OSTI)

    Deaton, R.L.; Goebel, C.J.; Amos, W.R.

    1990-01-01

    In the late 1970's, the Department of Energy (DOE) assigned Monsanto Research Corporation, Mound Facility, now operated by EG G Mound Applied Technologies, the responsibility for assembling and testing General Purpose Heat Source (GPHS) radioisotope thermoelectric generators (RTGs). Assembled and tested were five RTGs, which included four flight units and one non-flight qualification unit. Figure 1 shows the RTG, which was designed by General Electric AstroSpace Division (GE/ASD) to produce 285 W of electrical power. A detailed description of the processes for RTG assembly and testing is presented by Amos and Goebel (1989). The RTG performance data are described by Bennett, et al. (1986). The flight units will provide electrical power for the National Aeronautics and Space Administration's (NASA) Galileo mission to Jupiter (two RTGs) and the joint NASA/European Space Agency (ESA) Ulysses mission to study the polar regions of the sun (one RTG). The remaining flight unit will serve as the spare for both missions, and a non-flight qualification unit was assembled and tested to ensure that performance criteria were adequately met. 4 refs., 3 figs.

  1. Analytical thermal model validation for Cassini radioisotope thermoelectric generator

    SciTech Connect (OSTI)

    Lin, E.I.

    1997-12-31

    The Saturn-bound Cassini spacecraft is designed to rely, without precedent, on the waste heat from its three radioisotope thermoelectric generators (RTGs) to warm the propulsion module subsystem, and the RTG end dome temperature is a key determining factor of the amount of waste heat delivered. A previously validated SINDA thermal model of the RTG was the sole guide to understanding its complex thermal behavior, but displayed large discrepancies against some initial thermal development test data. A careful revalidation effort led to significant modifications and adjustments of the model, which result in a doubling of the radiative heat transfer from the heat source support assemblies to the end domes and bring up the end dome and flange temperature predictions to within 2 C of the pertinent test data. The increased inboard end dome temperature has a considerable impact on thermal control of the spacecraft central body. The validation process offers an example of physically-driven analytical model calibration with test data from not only an electrical simulator but also a nuclear-fueled flight unit, and has established the end dome temperatures of a flight RTG where no in-flight or ground-test data existed before.

  2. EIS-0302: Transfer of the Heat Source/Radioisotope Thermoelectric Generator Assembly and Test Operations From the Mound Site

    Broader source: Energy.gov [DOE]

    This EIS analyzes DOE's proposed transfer of the Heat Source/Radioisotope Thermoelectric Generator (HS/RTG) operations at the Mound Site near Miamisburg, Ohio, to an alternative DOE site.

  3. Thermoelectric Alloys and Devices for Radioisotope Space Power Systems: State of the Art and Current Developments

    SciTech Connect (OSTI)

    Barnett, W.; Dick, P.; Beaudry, B.; Gorsuch, P.; Skrabek, E.

    1989-01-01

    Lead telluride and silicon germanium type alloys have served over the past several decades as the preferred thermoelectric conversion materials for U. S. radioisotope thermoelectric generator (RTG) power systems for planetary deep space exploration missions. The Pioneer missions to Jupiter and Jupiter/Saturn and the Viking Mars Lander missions employed TAGS-2N (lead and germanium telluride derivatives) power conversion devices. Since 1976, silicon germanium (SiGe) alloys, incorporated into the unicouple device, have evolved as the thermoelectric materials of choice for U. S. RTG powered space missions. These include the U. S. Air Force Lincoln Experimental Satellites 8 & 9 for communications, in 1976, followed in 1977 by the National Aeronautics and Space Administration Voyager 1 and 2 planetary missions. In 1989, advanced SiGe RTGs were used to power the Galileo exploration of Jupiter and, in 1990, will be used to power the Ulysses investigation of the Sun. In addition, SiGe technology has been chosen to provide RTG power for the 1995 Comet Rendezvous and Asteroid Flyby mission and the 1996 Cassini Saturn orbiter mission. Summaries of the flight performance data for these systems are presented.; Current U. S. Department of Energy thermoelectric development activities include (1) the development of conversion devices based on hi-density, close packed couple arrays and (2) the development of improved performance silicon germanium type thermoelectric materials. The silicon germanium type "multicouple", being developed in conjunction with the Modular RTG program, is discussed in a companion paper. A lead telluride type close-packed module, discussed herein, offers the promise of withstanding high velocity impacts and, thus, is a candidate for a Mars Penetrator application.; Recent projects sponsored by the U. S. Department of Energy, including the Improved Thermoelectric Materials and Modular Radioisotope Thermoelectric Generator programs, have shown that improvements

  4. Specification for strontium-90 500-watt(e) radioisotopic thermoelectric generator. Final report

    SciTech Connect (OSTI)

    Hammel, T.; Himes, J.; Lieberman, A.; McGrew, J.; Owings, D.; Schumann, F.

    1983-04-01

    A conceptual design for a demonstration 500-watt(e) radioisotopic thermoelectric generator has been created for the Department of Energy. The design effort was divided into two tasks, viz., create a design specification for a capsule strength member that utilizes a standard Strontium-90 fluoride-filled WESF inner liner, and create a conceptual design for a 500-watt(e) RTG. Both tasks have been accomplished. The strength-member specification was designed to survive an external pressure of 24,500 psi and meet the requirements of special-form radioisotope heat sources. Therefore the capsule can, if desired, be licensed for domestic and international transport. The design for the RTG features a radioisotopic heat source, an array of nine capsules in a tungsten biological shield, four current-technology series-connected thermoelectric-conversion modules, low-conductivity thermal insulation, and a passive finned-housing radiator for waste-heat dissipation. The preliminary RTG specification formulated previous to contract award has been met or exceeded. The power source will generate the required power for the required service period at 28 volts dc with a conversion efficiency of 8%, provided the existing in-pool capsules at WESF meet the assumed thermal-inventory requirements.

  5. Work plan for the fabrication of the radioisotope thermoelectric generator transportation system package mounting

    SciTech Connect (OSTI)

    Satoh, J.A.

    1994-11-09

    The Radioisotope Thermoelectric Generator (RTG) has available a dedicated system for the transportation of RTG payloads. The RTG Transportation System (System 100) is comprised of four systems; the Package (System 120), the Semi-trailer (System 140), the Gas Management (System 160), and the Facility Transport (System 180). This document provides guidelines on the fabrication, technical requirements, and quality assurance of the Package Mounting (Subsystem 145), part of System 140. The description follows the Development Control Requirements of WHC-CM-6-1, EP 2.4, Rev. 3.

  6. Environmental assessment of decommissioning radioisotope thermoelectric generators (RTG) in northwest Russia

    SciTech Connect (OSTI)

    Hosseini, A.; Standring, W.J.F.; Brown, J.E.; Dowdall, M.; Amundsen, I.B.

    2007-07-01

    This article presents some results from assessment work conducted as part of a joint Norwegian-Russian project to decommission radioisotope thermoelectric generators (RTG) in Northwest Russia. Potential worst case accident scenarios, based on the decommissioning procedures for RTGs, were assessed to study possible radiation effects to the environment. Close contact with exposed RTG sources will result in detrimental health effects. However, doses to marine biota from ingestion of radioactivity under the worst-case marine scenario studied were lower than threshold limits given in IAEA literature. (authors)

  7. Quality Assurance Plan for Heat Source/Radioisotope Thermoelectric Generator Programs

    SciTech Connect (OSTI)

    Gabriel, D. M.; Miller, G. D.; Bohne, W. A.

    1995-03-16

    The purpose of this document is to serve as the Quality Assurance Plan for Heat Source/Radioisotope Thermoelectric Generator (HS/RTG) programs performed at EG&G Mound Applied Technologies. As such, it identifies and describes the systems and activities in place to support the requirements contained in DOE Order 5700.6C as reflected in MD-10334, Mound Quality Policy and Responsibilities and the DOE/RPSD supplement, OSA/PQAR-1, Programmatic Quality Assurance Requirements for Space and Terrestrial Nuclear Power Systems. Unique program requirements, including additions, modifications, and exceptions to these quality requirements, are contained in the appendices of this plan. Additional appendices will be added as new programs and activities are added to Mound's HS/RTG mission assignment.

  8. Certification testing of the Los Alamos National Laboratory Heat Source/Radioisotopic Thermoelectric Generator shipping container

    SciTech Connect (OSTI)

    Bronowski, D.R.; Madsen, M.M.

    1991-09-01

    The Heat Source/Radioisotopic Thermoelectric Generator shipping counter is a Type B packaging currently under development by Los Alamos National Laboratory. Type B packaging for transporting radioactive material is required to maintain containment and shielding after being exposed to normal and hypothetical accident environments defined in Title 10 of the Code of Federal Regulations Part 71. A combination of testing and analysis is used to verify the adequacy of this packaging design. This report documents the testing portion of the design verification. Six tests were conducted on a prototype package: a water spray test, a 4-foot normal conditions drop test, a 30-foot drop test, a 40-inch puncture test, a 30-minute thermal test, and an 8-hour immersion test.

  9. A compendium of the radioisotope thermoelectric generator transportation system and recent programmatic changes

    SciTech Connect (OSTI)

    Becker, D.L.; McCoy, J.C.

    1996-03-01

    Because RTGs contain significant quantities of radioactive materials, usually plutonium-238 and its decay products, they must be transported in packages built in accordance with 10 CFR 71 (1994). To meet these regulatory requirements, US DOE commissioned Westinghouse Hanford Co. in 1988 to develop a Radioisotope Thermoelectric Generator Transportation System (RTGTS) that would fully comply while protecting RTGs from adverse environmental conditions during normal transport conditions (eg, mainly shock and heat). RTGTS is scheduled for completion Dec. 1996 and will be available to support NASA`s Cassini mission to Saturn in Oct. 1997. This paper provides an overview of the RTGTS project, discusses the hardware being produced, and summarizes various programmatic and management innovations required by recent changes at DOE.

  10. Over-the-road shock and vibration testing of the radioisotope thermoelectric generator transportation system

    SciTech Connect (OSTI)

    Becker, D.L.

    1997-05-01

    Radioisotope Thermoelectric Generators (RTG) convert heat generated by radioactive decay into electricity through the use of thermocouples. The RTGs have a long operating life, are reasonably lightweight, and require little or no maintenance, which make them particularly attractive for use in spacecraft. However, because RTGs contain significant quantities of radioactive materials, normally plutonium-238 and its decay products, they must be transported in packages built in accordance with Title 10, Code of Federal Regulations, Part 71 (10 CFR 71). To meet these regulations, a RTG Transportation System (RTGTS) that fully complies with 10 CFR 71 has been developed, which protects RTGs from adverse environmental conditions during normal conditions of transport (e.g., shock, vibration, and heat). To ensure the protection of RTGs from shock and vibration loadings during transport, extensive over-the-road testing was conducted on the RTG`S to obtain real-time recordings of accelerations of the air-ride suspension system trailer floor, packaging, and support structure. This paper provides an overview of the RTG`S, a discussion of the shock and vibration testing, and a comparison of the test results to the specified shock response spectra and power spectral density acceleration criteria.

  11. General-purpose heat source: Research and development program. Radioisotope thermoelectric generator impact tests: RTG-1 and RTG-2

    SciTech Connect (OSTI)

    Reimus, M.A.H.; Hinckley, J.E.; George, T.G.

    1996-07-01

    The General-Purpose Heat Source (GPHS) provides power for space missions by transmitting the heat of {sup 238}Pu decay to an array of thermoelectric elements in a radioisotope thermoelectric generator (RTG). Because the potential for a launch abort or return from orbit exists for any space mission, the heat source response to credible accident scenarios is being evaluated. The first two RTG Impact Tests were designed to provide information on the response of a fully loaded RTG to end-on impact against a concrete target. The results of these tests indicated that at impact velocities up to 57 m/s the converter shell and internal components protect the GPHS capsules from excessive deformation. At higher velocities, some of the internal components of the RTG interact with the GPHS capsules to cause excessive localized deformation and failure.

  12. General-purpose heat source: Research and development program, radioisotope thermoelectric generator/thin fragment impact test

    SciTech Connect (OSTI)

    Reimus, M.A.H.; Hinckley, J.E.

    1996-11-01

    The general-purpose heat source provides power for space missions by transmitting the heat of {sup 238}Pu decay to an array of thermoelectric elements in a radioisotope thermoelectric generator (RTG). Because the potential for a launch abort or return from orbit exists for any space mission, the heat source response to credible accident scenarios is being evaluated. This test was designed to provide information on the response of a loaded RTG to impact by a fragment similar to the type of fragment produced by breakup of the spacecraft propulsion module system. The results of this test indicated that impact by a thin aluminum fragment traveling at 306 m/s may result in significant damage to the converter housing, failure of one fueled clad, and release of a small quantity of fuel.

  13. Energy Department Nuclear Systems Are Powering Mars Rover | Department...

    Broader source: Energy.gov (indexed) [DOE]

    It's powered by the Multi-Mission Radioisotope Thermoelectric Generator (MMRTG). Photo courtesy of NASAJPL-Caltech. Powering Curiosity: Multi-Mission Radioisotope Thermoelectric ...

  14. Disposition of Radioisotope Thermoelectric Generators Currently Located at the Oak Ridge National Laboratory - 12232

    SciTech Connect (OSTI)

    Glenn, J.; Patterson, J.; DeRoos, K.; Patterson, J.E.; Mitchell, K.G.

    2012-07-01

    Under the American Recovery and Reinvestment Act (ARRA), the U.S. Department of Energy (DOE) awarded SEC Federal Services Corporation (SEC) a 34-building demolition and disposal (D and D) project at the Oak Ridge National Laboratory (ORNL) that included the disposition of six Strontium (Sr-90) powered Radioisotope Thermoelectric Generators (RTGs) stored outside of ORNL Building 3517. Disposition of the RTGs is very complex both in terms of complying with disposal facility waste acceptance criteria (WAC) and U.S. Department of Transportation (DOT) requirements for packaging and transportation in commerce. Two of the RTGs contain elemental mercury which requires them to be Land Disposal Restrictions (LDR) compliant prior to disposal. In addition, all of the RTGs exceed the Class C waste concentration limits under Nuclear Regulatory Commission (NRC) Waste Classification Guidelines. In order to meet the LDR requirements and Nevada National Security Site (NNSS) WAC, a site specific treatability variance for mercury was submitted to the U.S. Environmental Protection Agency (EPA) to allow macro-encapsulation to be an acceptable treatment standard for elemental mercury. By identifying and confirming the design configuration of the mercury containing RTGs, the SEC team proved that the current configuration met the macro-encapsulation standard of 40 Code of Federal Regulations (CFR) 268.45. The SEC Team also worked with NNSS to demonstrate that all radioisotope considerations are compliant with the NNSS low-level waste (LLW) disposal facility performance assessment and WAC. Lastly, the SEC team determined that the GE2000 Type B cask met the necessary size, weight, and thermal loading requirements for five of the six RTGs. The sixth RTG (BUP-500) required a one-time DOT shipment exemption request due to the RTG's large size. The DOT exemption justification for the BUP-500 relies on the inherent robust construction and material make-up of the BUP- 500 RTG. DOE-ORO, SEC, and

  15. System and method to improve the power output and longetivity of a radioisotope thermoelectric generator

    DOE Patents [OSTI]

    Mowery, Jr., Alfred L.

    1993-01-01

    By using the helium generated by the alpha emissions of a thermoelectric generator during space travel for cooling, the thermal degradation of the thermoelectric generator can be slowed. Slowing degradation allows missions to be longer with little additional expense or payload.

  16. Vibration Testing of the Pluto/New Horizons Radioisotope Thermoelectric Generator

    SciTech Connect (OSTI)

    Charles D. Griffin

    2006-06-01

    The Radioisotopic Thermal Generator (RTG) for the Pluto/New Horizons spacecraft was subjected to a flight dynamic acceptance test to demonstrate that it would perform successfully following launch. Seven RTGs of this type had been assembled and tested at Mound, Ohio from 1984 to 1997. This paper chronicles major events in establishing a new vibration test laboratory at the Idaho National Laboratory and the nineteen days of dynamic testing.

  17. GPHS-RTG system explosion test direct course experiment 5000. [General Purpose Heat Source-Radioisotope Thermoelectric Generator

    SciTech Connect (OSTI)

    Not Available

    1984-03-01

    The General Purpose Heat Source-Radioisotope Thermoelectric Generator (GPHS-RTG) has been designed and is being built to provide electrical power for spacecrafts to be launched on the Space Shuttle. The objective of the RTG System Explosion Test was to expose a mock-up of the GPHS-RTG with a simulated heat source to the overpressure and impulse representative of a potential upper magnitude explosion of the Space Shuttle. The test was designed so that the heat source module would experience an overpressure at which the survival of the fuel element cladding would be expected to be marginal. Thus, the mock-up was placed where the predicted incident overpressure would be 1300 psi. The mock-up was mounted in an orientation representative of the launch configuration on the spacecraft to be used on the NASA Galileo Mission. The incident overpressure measured was in the range of 1400 to 2100 psi. The mock-up and simulated heat source were destroyed and only very small fragments were recovered. This damage is believed to have resulted from a combination of the overpressure and impact by very high velocity fragments from the ANFO sphere. Post-test analysis indicated that extreme working of the iridium clad material occurred, indicative of intensive impulsive loading on the metal.

  18. Radioisotope Thermoelectric Generator Transportation System licensed hardware second certification test series and package shock mount system test

    SciTech Connect (OSTI)

    Ferrell, P.C.; Moody, D.A.

    1996-03-01

    This paper presents a summary of two separate drop test activities that were performed in support of the Radioisotope Thermoelectric Generator (RTG) Transportation System (RTGTS). The first portion of this paper presents the second series of drop testing required to demonstrate that the RTG package design meets the requirements of {ital Title} 10, {ital Code} {ital of} {ital Federal} {ital Regulations}, {open_quote}{open_quote}Part 71{close_quote}{close_quote} (10 CFR 71). Results of the first test series, performed in July 1994, demonstrated that some design changes were necessary. The package design was modified to improve test performance and the design changes were incorporated into the Safety Analysis Report for Packaging (SARP). The second full-size certification test article (CTA-2) incorporated the modified design and was tested at the U.S. Department of Energy{close_quote}s (DOE) Hanford Site near Richland, Washington. With the successful completion of the test series, and pending DOE Office of Facility Safety Analysis approval of the SARP, a certificate of compliance will be issued for the RTG package allowing its use. The second portion of this paper presents the design and testing of the RTG Package Mount System. The RTG package mount was designed to protect the RTG from excessive vibration during transport, provide shock protection during on/off loading, and provide a mechanism for moving the RTG package with a forklift. Military Standard (MIL-STD) 810E, {ital Transit} {ital Drop} {ital Procedure} (DOE 1989), was used to verify that the shock limiting system limited accelerations in excess of 15 G{close_quote}s at frequencies below 150 Hz. Results of the package mount drop tests indicate that an impact force of 15 G{close_quote}s was not exceeded in any test from a free drop height of 457 mm (18 in.). {copyright} {ital 1996 American Institute of Physics.}

  19. Radioisotope Thermoelectric Generator Transporation System licensed hardware second certification test series and package shock mount system test

    SciTech Connect (OSTI)

    Ferrell, P.C.; Moody, D.A.

    1995-10-01

    This paper presents a summary of two separate drop test a e performed in support of the Radioisotope Thermoelectric Generator (RTG) Transportation System (RTGTS). The first portion of this paper presents the second series of drop testing required to demonstrate that the RTG package design meets the requirements of Title 10, Code of Federal Regulations, ``Part 71`` (10 CFR 71). Results of the first test series, performed in July 1994, demonstrated that some design changes were necessary. The package design was modified to improve test performance and the design changes were incorporated into the Safety Analysis Report for Packaging (SARP). The second full-size certification test article (CTA-2) incorporated the modified design and was tested at the US Department of Energy`s (DOE) Hanford Site near Richland, Washington. With the successful completion of the test series, and pending DOE Office of Facility Safety Analysis approval of the SARP, a certificate of compliance will be issued for the RTG package allowing its use. The second portion of this paper presents the design and testing of the RTG Package Mount System. The RTG package mount was designed to protect the RTG from excessive vibration during transport, provide shock protection during on/off loading, and provide a mechanism for moving the RTG package with a forklift. Military Standard (MIL-STD) 810E, Transit Drop Procedure (DOE 1989), was used to verify that the shock limiting system limited accelerations in excess of 15 G`s at frequencies below 150 Hz. Results of the package mount drop tests indicate that an impact force of 15 G`s was not exceeded in any test from a free drop height of 457 mm (18 in.).

  20. Thermoelectrics Partnership: Automotive Thermoelectric Modules...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Solution for Automotive Thermoelectric Modules Application Thermoelectrics Partnership: Automotive Thermoelectric Modules with Scalable Thermo- and Electro-Mechanical Interfaces

  1. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    ... One option for the rover on the proposed spacecraft uses a Multi-Mission Radioisotope Thermoelectric Generator (MMRTG) to provide continuous electrical and thermal power for the ...

  2. NE Blog Archive | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    of NASA's Mars Exploration Program, a long-term program of robotic exploration of the Red Planet. It's powered by the Multi-Mission Radioisotope Thermoelectric Generator...

  3. DOE Science Showcase - "Curiosity" R&D | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    Mars Science Laboratory, by Dr. William Watson, Physicist, OSTI staff. Image Credit: NASAJPL-Caltech DOE's Multi-Mission Radioisotope Thermoelectric Generator (RTG) constructed ...

  4. DOE-Idaho Operations Summary For July 13 to August 2, 2012

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    a technician drilled a hole in the condensate collection pan and struck a cooling blade. ... the multi-mission radioisotope thermoelectric generator (space battery) that will ...

  5. U.S. Department of ENERGY Start-up Plan for Plutonium-238...

    Energy Savers [EERE]

    ... to use the Multi-Mission Radioisotope Thermoelectric Generator (MMRTG) technology and the ... After targets are irradiated, additional cooling time is required before they are ...

  6. Thermoelectrics Partnership: Automotive Thermoelectric Modules...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Thermoelectrics Partnership: Automotive Thermoelectric Modules with Scalable Thermo- and Electro-Mechanical Interfaces Novel Nanostructured Interface Solution for Automotive ...

  7. New Horizons Mission Powered by Space Radioisotope Power Systems |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy Horizons Mission Powered by Space Radioisotope Power Systems New Horizons Mission Powered by Space Radioisotope Power Systems January 30, 2008 - 6:47pm Addthis Artist's concept of the New Horizons spacecraft during its planned encounter with Pluto and its moon, Charon. The craft's miniature cameras, radio science experiment, ultraviolet and infrared spectrometers and space plasma experiments are run by the Department of Energy's Radioisotope Thermoelectric Generator

  8. Modular Isotopic Thermoelectric Generator

    SciTech Connect (OSTI)

    Schock, Alfred

    1981-01-01

    Advanced RTG concepts utilizing improved thermoelectric materials and converter concepts are under study at Fairchild for DOE. The design described here is based on DOE's newly developed radioisotope heat source, and on an improved silicon-germanium material and multicouple converter module under development at Syncal. Fairchild's assignment was to combine the above into an attractive power system for use in space, and to assess the specific power and other attributes of that design.

  9. Thermoelectrics Partnership: High Performance Thermoelectric...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Embedded Nanoparticles Thermoelectrics Partnership: High Performance Thermoelectric Waste Heat Recovery System Based on Zintl Phase Materials with Embedded Nanoparticles 2011 DOE ...

  10. Thermoelectric converter

    DOE Patents [OSTI]

    Kim, C.K.

    1974-02-26

    This invention relates in general to thermoelectric units and more particularly to a tubular thermoelectric unit which includes an array of tandemly arranged radially tapered annular thermoelectric pellets having insulation material of a lower density than the thermoelectric pellets positioned between each pellet. (Official Gazette)

  11. Modular Isotopic Thermoelectric Generator

    SciTech Connect (OSTI)

    Schock, Alfred

    1981-04-03

    Advanced RTG concepts utilizing improved thermoelectric materials and converter concepts are under study at Fairchild for DOE. The design described here is based on DOE's newly developed radioisotope heat source, and on an improved silicon-germanium material and a multicouple converter module under development at Syncal. Fairchild's assignment was to combine the above into an attractive power system for use in space, and to assess the specific power and other attributes of that design. The resultant design is highly modular, consisting of standard RTG slices, each producing ~24 watts at the desired output voltage of 28 volt. Thus, the design could be adapted to various space missions over a wide range of power levels, with little or no redesign. Each RTG slice consists of a 250-watt heat source module, eight multicouple thermoelectric modules, and standard sections of insulator, housing, radiator fins, and electrical circuit. The design makes it possible to check each thermoelectric module for electrical performance, thermal contact, leaktightness, and performance stability, after the generator is fully assembled; and to replace any deficient modules without disassembling the generator or perturbing the others. The RTG end sections provide the spring-loaded supports required to hold the free-standing heat source stack together during launch vibration. Details analysis indicates that the design offers a substantial improvement in specific power over the present generator of RTGs, using the same heat source modules. There are three copies in the file.

  12. Thermoelectric module

    DOE Patents [OSTI]

    Kortier, William E.; Mueller, John J.; Eggers, Philip E.

    1980-07-08

    A thermoelectric module containing lead telluride as the thermoelectric mrial is encapsulated as tightly as possible in a stainless steel canister to provide minimum void volume in the canister. The lead telluride thermoelectric elements are pressure-contacted to a tungsten hot strap and metallurgically bonded at the cold junction to iron shoes with a barrier layer of tin telluride between the iron shoe and the p-type lead telluride element.

  13. NSF/DOE Thermoelectrics Partnership: Thermoelectrics for Automotive...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Thermoelectrics for Automotive Waste Heat Recovery Thermoelectrics Partnership: Automotive Thermoelectric Modules with Scalable Thermo- and Electro-Mechanical Interfaces

  14. Thermoelectric system

    SciTech Connect (OSTI)

    Reiners, Eric A.; Taher, Mahmoud A.; Fei, Dong; McGilvray, Andrew N.

    2007-10-30

    In one particular embodiment, an internal combustion engine is provided. The engine comprises a block, a head, a piston, a combustion chamber defined by the block, the piston, and the head, and at least one thermoelectric device positioned between the combustion chamber and the head. In this particular embodiment, the thermoelectric device is in direct contact with the combustion chamber. In another particular embodiment, a cylinder head configured to sit atop a cylinder bank of an internal combustion engine is provided. The cylinder head comprises a cooling channel configured to receive cooling fluid, valve seats configured for receiving intake and exhaust valves, and thermoelectric devices positioned around the valve seats.

  15. space exploration radioisotope power systems

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    space exploration radioisotope power systems - Sandia Energy Energy Search Icon Sandia ... SunShot Grand Challenge: Regional Test Centers space exploration radioisotope power ...

  16. Local Hero

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ... work on the Mars Science Laboratory Multi-Mission Radioisotope Thermoelectric Generator. ... the first use of a heat pipe for reactor cooling as well as the first use of a Sterling ...

  17. High temperature thermoelectrics

    DOE Patents [OSTI]

    Moczygemba, Joshua E.; Biershcenk, James L.; Sharp, Jeffrey W.

    2014-09-23

    In accordance with one embodiment of the present disclosure, a thermoelectric device includes a plurality of thermoelectric elements that each include a diffusion barrier. The diffusion barrier includes a refractory metal. The thermoelectric device also includes a plurality of conductors coupled to the plurality of thermoelectric elements. The plurality of conductors include aluminum. In addition, the thermoelectric device includes at least one plate coupled to the plurality of thermoelectric elements using a braze. The braze includes aluminum.

  18. Composite Thermoelectric Devices

    Broader source: Energy.gov [DOE]

    Composite thermoelectric devices incorporating common conductors laminated between P- and N-type thermoelectric plates demonstrate internal ohmic loss reduction and enhanced performance

  19. Thermoelectric generator

    DOE Patents [OSTI]

    Pryslak, N.E.

    1974-02-26

    A thermoelectric generator having a rigid coupling or stack'' between the heat source and the hot strap joining the thermoelements is described. The stack includes a member of an insulating material, such as ceramic, for electrically isolating the thermoelements from the heat source, and a pair of members of a ductile material, such as gold, one each on each side of the insulating member, to absorb thermal differential expansion stresses in the stack. (Official Gazette)

  20. 2009 Thermoelectrics Applications Workshop | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Thermoelectrics Applications Workshop 2009 Thermoelectrics Applications Workshop September 29 - October 1, 2009 San Diego, CA Tuesday, September 29, 2009 Opening Plenary Session Wednesday, September 30, 2009 Overview of Worldwide Activities in Thermoelectrics Thermoelectric Applications I Thermoelectric Materials I Thermoelectric Manufacturing Thursday, October 1, 2009 Thermoelectric Materials II Thermoelectric Applications II Thermoelectric Materials III Thermoelectric Applications III Tuesday,

  1. Radioisotopic heat source

    DOE Patents [OSTI]

    Jones, G.J.; Selle, J.E.; Teaney, P.E.

    1975-09-30

    Disclosed is a radioisotopic heat source and method for a long life electrical generator. The source includes plutonium dioxide shards and yttrium or hafnium in a container of tantalum-tungsten-hafnium alloy, all being in a nickel alloy outer container, and subjected to heat treatment of from about 1570$sup 0$F to about 1720$sup 0$F for about one h. (auth)

  2. Waste Heat Recovery Opportunities for Thermoelectric Generators...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Waste Heat Recovery Opportunities for Thermoelectric Generators Waste Heat Recovery Opportunities for Thermoelectric Generators Thermoelectrics have unique advantages for ...

  3. Environmental assessment for radioisotope heat source fuel processing and fabrication

    SciTech Connect (OSTI)

    Not Available

    1991-07-01

    DOE has prepared an Environmental Assessment (EA) for radioisotope heat source fuel processing and fabrication involving existing facilities at the Savannah River Site (SRS) near Aiken, South Carolina and the Los Alamos National Laboratory (LANL) near Los Alamos, New Mexico. The proposed action is needed to provide Radioisotope Thermoelectric Generators (RTG) to support the National Aeronautics and Space Administration's (NASA) CRAF and Cassini Missions. Based on the analysis in the EA, DOE has determined that the proposed action does not constitute a major Federal action significantly affecting the quality of the human environment within the meaning of the National Environmental Policy Act (NEPA) of 1969. Therefore, an Environmental Impact Statement is not required. 30 refs., 5 figs.

  4. Thermoelectrics Partnership: Automotive Thermoelectric Modules with

    Broader source: Energy.gov (indexed) [DOE]

    Scalable Thermo- and Electro-Mechanical Interfaces | Department of Energy 2 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting ace067_goodson_2012_o.pdf (5.6 MB) More Documents & Publications Novel Nanostructured Interface Solution for Automotive Thermoelectric Modules Application Thermoelectrics Partnership: Automotive Thermoelectric Modules with Scalable Thermo- and Electro-Mechanical Interfaces

  5. Thermoelectrics Partnership: Automotive Thermoelectric Modules with

    Broader source: Energy.gov (indexed) [DOE]

    Scalable Thermo- and Electro-Mechanical Interfaces | Department of Energy 1 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation ace067_goodson_2011_o.pdf (1.89 MB) More Documents & Publications Thermoelectrics Partnership: Automotive Thermoelectric Modules with Scalable Thermo- and Electro-Mechanical Interfaces Novel Nanostructured Interface Solution for Automotive Thermoelectric Modules Application

  6. Radioisotope Thermoelectric Generator F7 Flight Unit Acceptance Buy Off

    SciTech Connect (OSTI)

    1997-02-20

    These are viewgraphs from the subject presentation. The LMMS E-7 history is outlined; Qualification and use of the F-7 GPHS-RTG for the Cassini mission; and the F-7 acceptance test program and performance are described.

  7. Potential improvements in SiGe radioisotope thermoelectric generator performance

    SciTech Connect (OSTI)

    Mowery, A.L.

    1999-01-01

    In accordance with NASA{close_quote}s slogan: {open_quotes}Better, Cheaper, Faster,{close_quotes} this paper will address potential improvements to SiGe RTG technology to make them Better. RTGs are doubtless cheaper than {open_quotes}paper designs{close_quotes} which are better and cheaper until development, performance and safety test costs are considered. RTGs have the advantage of being fully developed and tested in the rigors of space for over twenty years. Further, unless a new system can be accelerated tested, as were the RTGs, they cannot be deployed reliably unless a number of systems have succeeded for test periods exceeding the mission lifetime. Two potential developments are discussed that can improve the basic RTG performance by 10 to 40{sup +}{percent} depending on the mission profile. These improvements could be demonstrated in years. Accelerated testing could also be performed in this period to preserve existing RTG reliability. Data from a qualification tested RTG will be displayed, while not definitive, to support the conclusions. Finally, it is anticipated that other investigators will be encouraged to suggest further modifications to the basic RTG design to improve its performance. {copyright} {ital 1999 American Institute of Physics.}

  8. Modular Radioisotope Thermoelectric Generator (RTG) Program. Final technical report

    SciTech Connect (OSTI)

    Not Available

    1992-12-31

    Section 2.0 of this report summarizes the MOD-RTG reference flight design, and Section 3.0 discusses the Ground Demonstration System design. Multicouple technology development is discussed in Section 4.0, and Section 5.0 lists all published technical papers prepared during the course of the contract.

  9. Component for thermoelectric generator

    DOE Patents [OSTI]

    Purdy, David L.

    1977-01-01

    In a thermoelectric generator, a component comprises a ceramic insulator, having over limited areas thereof, each area corresponding to a terminal end of thermoelectric wires, a coating of a first metal which adheres to the insulator, and an electrical thermoelectric junction including a second metal which wets said first metal and adheres to said terminal ends but does not wet said insulator, and a cloth composed of electrically insulating threads interlaced with thermoelectric wires.

  10. Radioisotopes: Energy for Space Exploration

    SciTech Connect (OSTI)

    Carpenter, Bob; Green, James; Bechtel, Ryan

    2011-01-01

    Through a strong partnership between the Energy Department's office of Nuclear Energy and NASA, Radioisotope Power Systems have been providing the energy for deep space exploration.

  11. Radioisotopes: Energy for Space Exploration

    ScienceCinema (OSTI)

    Carpenter, Bob; Green, James; Bechtel, Ryan

    2013-05-29

    Through a strong partnership between the Energy Department's office of Nuclear Energy and NASA, Radioisotope Power Systems have been providing the energy for deep space exploration.

  12. Multi-Mission Capable, High g Load mW RPS

    SciTech Connect (OSTI)

    John C. Bass; Nathan Hiller; Velimir Jovanovic; Norbert B. Elsner

    2007-05-23

    Over the past few years Hi-Z has been developing a wide range of mW generators and life testing thermoelectric modules for the Department of Energy (DOE) to fulfill requirements by NASA Ames and other agencies. The purpose of this report is to determine the capabilities of a wide range of mW generators for various missions. In the 1st quarterly report the power output of various mW generators was determined via thermal and mechanical modeling. The variable attributes of each generator modeled were: the number of RHUs (1-8), generator outer diameter (1.25-4 in.), and G-load (10, 500, or 2,000). The resultant power output was as high as 180 mW for the largest generator with the lowest Gload. Specifically, we looked at the design of a generator for high G loading that is insulated with Xenon gas and multifoil solid insulation. Because the design of this new generator varied considerably from the previous generator design, it was necessary to show in detail how it is to be assembled, calculate them as of the generator and determine the heat loss from the system. A new method of assembling the RHU was also included as part of the design. As a side issue we redesigned the test stations to provide better control of the cold sink temperature. This will help in reducing the test data by eliminating the need to 'normalize' the data to a specific temperature. In addition these new stations can be used to simulate the low ambient temperatures associated with Mars and other planets.

  13. Energy Recovery Linacs for Commercial Radioisotope Production...

    Office of Scientific and Technical Information (OSTI)

    Energy Recovery Linacs for Commercial Radioisotope Production Citation Details In-Document Search Title: Energy Recovery Linacs for Commercial Radioisotope Production Photonuclear ...

  14. Thermoelectric materials having porosity

    DOE Patents [OSTI]

    Heremans, Joseph P.; Jaworski, Christopher M.; Jovovic, Vladimir; Harris, Fred

    2014-08-05

    A thermoelectric material and a method of making a thermoelectric material are provided. In certain embodiments, the thermoelectric material comprises at least 10 volume percent porosity. In some embodiments, the thermoelectric material has a zT greater than about 1.2 at a temperature of about 375 K. In some embodiments, the thermoelectric material comprises a topological thermoelectric material. In some embodiments, the thermoelectric material comprises a general composition of (Bi.sub.1-xSb.sub.x).sub.u(Te.sub.1-ySe.sub.y).sub.w, wherein 0.ltoreq.x.ltoreq.1, 0.ltoreq.y.ltoreq.1, 1.8.ltoreq.u.ltoreq.2.2, 2.8.ltoreq.w.ltoreq.3.2. In further embodiments, the thermoelectric material includes a compound having at least one group IV element and at least one group VI element. In certain embodiments, the method includes providing a powder comprising a thermoelectric composition, pressing the powder, and sintering the powder to form the thermoelectric material.

  15. Radioisotope Stirling Generator Options for Pluto Fast Flyby Mission

    SciTech Connect (OSTI)

    Schock, Alfred

    2012-01-19

    The preceding paper described conceptual designs and analytical results for five Radioisotope Thermoelectric Generator (RTG) options for the Pluto Fast Flyby (PFF) mission, and the present paper describes three Radioisotope Stirling Generator (RSG) options for the same mission. The RSG options are based on essentially the same radioisotope heat source modules used in previously flown RTGs and on designs and analyses of a 75-watt free-piston Stirling engine produced by Mechanical Technology Incorporated (MTI) for NASA's Lewis Research Center. The integrated system design options presented were generated in a Fairchild Space study sponsored by the Department of Energy's Office of Special Applications, in support of ongoing PFF mission and spacecraft studies that the Jet Propulsion Laboratory (JPL) is conducting for the National Aeronautics and Space Administration (NASA). That study's NASA-directed goal is to reduce the spacecraft mass from its baseline value of 166 kg to ~110 kg, which implies a mass goal of less than 10 kg for a power source able to deliver 69 watts(e) at the end of the 9.2-year mission. In general, the Stirling options were found to be lighter than the thermoelectric options described in the preceding paper. But they are less mature, requiring more development, and entailing greater programmatic risk. The Stirling power system mass ranged from 7.3 kg (well below the 10-kg goal) for a non-redundant system to 11.3 kg for a redundant system able to maintain full power if one of its engines fails. In fact, the latter system could deliver as much as 115 watts(e) if desired by the mission planners. There are 2 copies in the file.

  16. Radioisotope Stirling Generator Options for Pluto Fast Flyby Mission

    SciTech Connect (OSTI)

    Schock, Alfred

    1993-10-01

    The preceding paper described conceptual designs and analytical results for five Radioisotope Thermoelectric Generator (RTG) options for the Pluto Fast Flyby (PFF) mission, and the present paper describes three Radioisotope Stirling Generator (RSG) options for the same mission. The RSG options are based on essentially the same radioisotope heat source modules used in previously flown RTGs and on designs and analyses of a 75-watt free-piston Stirling engine produced by Mechanical Technology Incorporated (MTI) for NASA's Lewis Research Center. The integrated system design options presented were generated in a Fairchild Space study sponsored by the Department of Energy's Office of Special Applications, in support of ongoing PFF mission and spacecraft studies that the Jet Propulsion Laboratory (JPL) is conducting for the National Aeronautics and Space Administration (NASA). That study's NASA-directed goal is to reduce the spacecraft mass from its baseline value of 166 kg to ~110 kg, which implies a mass goal of less than 10 kg for a power source able to deliver 69 watts(e) at the end of the 9.2-year mission. In general, the Stirling options were found to be lighter than the thermoelectric options described in the preceding paper. But they are less mature, requiring more development, and entailing greater programmatic risk. The Stirling power system mass ranged from 7.3 kg (well below the 10-kg goal) for a non-redundant system to 11.3 kg for a redundant system able to maintain full power if one of its engines fails. In fact, the latter system could deliver as much as 115 watts(e) if desired by the mission planners. There are 5 copies in the file.

  17. Nanostructured Thermoelectrics. The New Paradigm

    Broader source: Energy.gov [DOE]

    Highlights advances and future strategies for enhancing the thermoelectric figure of merit of bulk nanostructured thermoelectric and materials using low cost earth abundant elements

  18. Advanced radioisotope power source options for Pluto Express

    SciTech Connect (OSTI)

    Underwood, M.L.

    1995-12-31

    In the drive to reduce mass and cost, Pluto Express is investigating using an advanced power conversion technology in a small Radioisotope Power Source (RPS) to deliver the required mission power of 74 W(electric) at end of mission. Until this year the baseline power source under consideration has been a Radioisotope Thermoelectric Generator (RTG). This RTG would be a scaled down GPHS RTG with an inventory of 6 General Purpose Heat Sources (GPHS) and a mass of 17.8 kg. High efficiency, advanced technology conversion options are being examined to lower the power source mass and to reduce the amount of radioisotope needed. Three technologies are being considered as the advanced converter technology: the Alkali Metal Thermal-to-Electric Converter (AMTEC), Thermophotovoltaic (TPV) converters, and Stirling Engines. Conceptual designs for each of these options have been prepared. Each converter would require only 2 GPHSs to provide the mission power and would have a mass of 6.1, 7.2, and 12.4 kg for AMTEC, TPV, and Stirling Engines respectively. This paper reviews the status of each technology and the projected performance of an advanced RPS based on each technology. Based on the projected performance and spacecraft integration issues, Pluto Express would prefer to use the AMTEC based RPS. However, in addition to technical performance, selection of a power technology will be based on many other factors.

  19. Thermoelectric heat exchange element

    DOE Patents [OSTI]

    Callas, James J.; Taher, Mahmoud A.

    2007-08-14

    A thermoelectric heat exchange module includes a first substrate including a heat receptive side and a heat donative side and a series of undulatory pleats. The module may also include a thermoelectric material layer having a ZT value of 1.0 or more disposed on at least one of the heat receptive side and the heat donative side, and an electrical contact may be in electrical communication with the thermoelectric material layer.

  20. Solar Thermoelectric Energy Conversion

    Office of Energy Efficiency and Renewable Energy (EERE)

    Efficiencies of different types of solar thermoelectric generators were predicted using theoretical modeling and validated with measurements using constructed prototypes under different solar intensities

  1. Vehicular Thermoelectric Applications Session DEER 2009 | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Thermoelectric Applications Session DEER 2009 Vehicular Thermoelectric Applications Session DEER 2009 This presentation is an overview of the DOE thermoelectric program. ...

  2. Challenges and Opportunities in Thermoelectric Materials Research...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Challenges and Opportunities in Thermoelectric Materials Research for Automotive ... The Bottom-Up Approach forThermoelectric Nanocomposites, plus NSFDOE Thermoelectric ...

  3. Thermoelectric Mechanical Reliability | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    0_wereszczak.pdf (1.52 MB) More Documents & Publications Thermoelectric Mechanical Reliability Thermoelectric Mechanical Reliability Thermoelectrics Theory and Structure

  4. Thermoelectrics: The New Green Automotive Technology | Department...

    Broader source: Energy.gov (indexed) [DOE]

    (2.09 MB) More Documents & Publications Vehicular Thermoelectrics: A New Green Technology Vehicular Thermoelectrics: A New Green Technology Vehicular Thermoelectrics: The New Green

  5. Thermoelectrics: The New Green Automotive Technology | Department...

    Broader source: Energy.gov (indexed) [DOE]

    (5.35 MB) More Documents & Publications Automotive Thermoelectric Generators and HVAC Vehicular Thermoelectrics: A New Green Technology Thermoelectrics: The New Green Automotive

  6. Vehicular Thermoelectrics: A New Green Technology | Department...

    Broader source: Energy.gov (indexed) [DOE]

    (3.68 MB) More Documents & Publications Thermoelectrics: The New Green Automotive Technology Vehicular Thermoelectrics: A New Green Technology Vehicular Thermoelectrics: The

  7. Automotive Thermoelectric Generators and HVAC

    Broader source: Energy.gov [DOE]

    Provides overview of DOE-supported projects in automotive thermoelectric generators and heaters/air conditioners

  8. Complex oxides useful for thermoelectric energy conversion

    SciTech Connect (OSTI)

    Majumdar, Arunava; Ramesh, Ramamoorthy; Yu, Choongho; Scullin, Matthew L.; Huijben, Mark

    2012-07-17

    The invention provides for a thermoelectric system comprising a substrate comprising a first complex oxide, wherein the substrate is optionally embedded with a second complex oxide. The thermoelectric system can be used for thermoelectric power generation or thermoelectric cooling.

  9. Encapsulation of High Temperature Thermoelectric Modules | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Encapsulation of High Temperature Thermoelectric Modules Encapsulation of High Temperature Thermoelectric Modules Presents concept for hermetic encapsulation of TE modules ...

  10. Thermoelectric Generator Development for Automotive Waste Heat...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Generator Development for Automotive Waste Heat Recovery Thermoelectric Generator ... More Documents & Publications Develop Thermoelectric Technology for Automotive Waste Heat ...

  11. Novel Nanostructured Interface Solution for Automotive Thermoelectric...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    and Electro-Mechanical Interfaces Thermoelectrics Partnership: Automotive Thermoelectric Modules with Scalable Thermo- and Electro-Mechanical Interfaces Automotive ...

  12. Proactive Strategies for Designing Thermoelectric Materials for...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    More Documents & Publications Proactive Strategies for Designing Thermoelectric Materials for Power Generation Proactive Strategies for Designing Thermoelectric Materials for Power ...

  13. Analytical Modeling and Simulation of Thermoelectric Devices...

    Broader source: Energy.gov (indexed) [DOE]

    and Technologies Micro- & Nano-Technologies Enabling More Compact, Lightweight Thermoelectric Power Generation & Cooling Systems Automotive Thermoelectric Generators and HVAC

  14. Commercialization of Bulk Thermoelectric Materials for Power...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Commercialization of Bulk Thermoelectric Materials for Power Generation Commercialization of Bulk Thermoelectric Materials for Power Generation Critical aspects of technology ...

  15. Solar thermoelectric generator

    DOE Patents [OSTI]

    Toberer, Eric S.; Baranowski, Lauryn L.; Warren, Emily L.

    2016-05-03

    Solar thermoelectric generators (STEGs) are solid state heat engines that generate electricity from concentrated sunlight. A novel detailed balance model for STEGs is provided and applied to both state-of-the-art and idealized materials. STEGs can produce electricity by using sunlight to heat one side of a thermoelectric generator. While concentrated sunlight can be used to achieve extremely high temperatures (and thus improved generator efficiency), the solar absorber also emits a significant amount of black body radiation. This emitted light is the dominant loss mechanism in these generators. In this invention, we propose a solution to this problem that eliminates virtually all of the emitted black body radiation. This enables solar thermoelectric generators to operate at higher efficiency and achieve said efficient with lower levels of optical concentration. The solution is suitable for both single and dual axis solar thermoelectric generators.

  16. Assessment of dynamic energy conversion systems for radioisotope heat sources

    SciTech Connect (OSTI)

    Thayer, G.R.; Mangeng, C.A.

    1985-06-01

    The use of dynamic conversion systems to convert the heat generated in a 7500 W(t) 90 Sr radioisotopic heat source to electricity is examined. The systems studies were Stirling; Brayton Cycle; three organic Rankines (ORCs) (Barber-Nichols/ORMAT, Sundstrand, and TRW); and an organic Rankine plus thermoelectrics. The systems were ranked for a North Warning System mission using a Los Alamos Multiattribute Decision Theory code. Three different heat source designs were used: case I with a beginning of life (BOL) source temperature of 640 C, case II with a BOL source temperature of 745/sup 0/C, and case III with a BOL source temperature of 945/sup 0/C. The Stirling engine system was the top-ranked system of cases I and II, closely followed by the ORC systems in case I and ORC plus thermoelectrics in case II. The Brayton cycle system was top-ranked for case III, with the Stirling engine system a close second. The use of /sup 238/Pu in heat source sizes of 7500 W(t) was examined and found to be questionable because of cost and material availability and because of additional requirements for analysis of safeguards and critical mass.

  17. Thermoelectric Materials, Devices and Systems:

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    DRAFT - PRE-DECISIONAL -DRAFT - FOR OFFICIAL USE ONLY - DRAFT Thermoelectric Materials, Devices and Systems: 1 Technology Assessment 2 Contents 3 1. Thermoelectric Generation ................................................................................................................... 2 4 2. Technology Assessment and Potential ................................................................................................. 3 5 2.1 Performance Advances

  18. Superconducting thermoelectric generator

    DOE Patents [OSTI]

    Metzger, J.D.; El-Genk, M.S.

    1994-01-01

    Thermoelectricity is produced by applying a temperature differential to dissimilar electrically conducting or semiconducting materials, thereby producing a voltage that is proportional to the temperature difference. Thermoelectric generators use this effect to directly convert heat into electricity; however, presently-known generators have low efficiencies due to the production of high currents which in turn cause large resistive heating losses. Some thermoelectric generators operate at efficiencies between 4% and 7% in the 800{degrees} to 1200{degrees}C range. According to its major aspects and bradly stated, the present invention is an apparatus and method for producing electricity from heat. In particular, the invention is a thermoelectric generator that juxtaposes a superconducting material and a semiconducting material - so that the superconducting and the semiconducting materials touch - to convert heat energy into electrical energy without resistive losses in the temperature range below the critical temperature of the superconducting material. Preferably, an array of superconducting material is encased in one of several possible configurations within a second material having a high thermal conductivity, preferably a semiconductor, to form a thermoelectric generator.

  19. Radioisotope Thermophotovoltaic (RTPV) Generator and Its Applicability to an Illustrative Space Mission

    SciTech Connect (OSTI)

    Schock, A.; Mukunda, M.; Or, T.; Kumar, V.; Summers, G.

    1994-02-14

    The paper describes the results of a DOE-sponsored design study of a radioisotope thermophotovoltaic generator (RTPV), to complement similar studies of Radioisotope Thermoelectric Generators (RTGs) and Stirling Generators (RSGs) previously published by the author. Instead of conducting a generic study, it was decided to focus the design effort by directing it at a specific illustrative space mission, Pluto Fast Flyby (PFF). That mission, under study by JPL, envisages a direct eight-year flight to Pluto (the only unexplored planet in the solar system), followed by comprehensive mapping, surface composition, and atmospheric structure measurements during a brief flyby of the planet and its moon Charon, and transmission of the recorded science data to Earth during a post-encounter cruise lasting up to one year.

  20. Radioisotope Thermophotovoltaic (RTPV) Generator and Its Application to the Pluto Fast Flyby Mission

    SciTech Connect (OSTI)

    Schock, Alfred; Mukunda, Meera; Or, Chuen T; Kumar, Vasanth; Summers, G.

    1994-01-16

    This paper describes the results of a DOE-sponsored design study of a radioisotope thermophotovoltaic generator. Instead of conducting a generic study, it was decided to focus the design by directing it at a specific space mission, Pluto Fast Flyby (PFF). That mission, under study by JPL, envisages a direct eight-year flight to Pluto (the only unexplored planet in the solar system), followed by comprehensive mapping, surface composition, and atmospheric structure measurements during a brief flyby of the planet and its moon Charon, and transmission of the recorded science data to Earth during a one-year post-encounter cruise. Because of Pluto's long distance from the sun (30-50 A.U.) and the mission's large energy demand, JPL has baselined the use of a radioisotope power system for the PFF spacecraft. The chief advantage of Radioisotope Thermophotovoltaic (RTPV) power systems over current Radioisotope Thermoelectric Generators (RTGs) is their much higher conversion efficiency, which greatly reduces the mass and cost of the required radioisotope heat source. Those attributes are particularly important for the PFF mission, which - like all NASA missions under current consideration - is severely mass- and cost-limited. The paper describes the design of the radioisotope heat source, the thermophotovoltaic converter, and the heat rejection system; and presents the results of the thermal, electrical, and structural analysis and the design optimization of the integrated RTPV system. It briefly summarizes the RTPV system's current technology status, and lists a number of factors that my greatly reduce the need for long-term tests to demonstrate generator lifetime. Our analytical results show very substantial performance improvements over an RTG designed for the same mission, and suggest that the RTPV generator, when developed by DOE and/or NASA, would be quite valuable not only for the PFF mission but also for other future missions requiring small, long-lived, low

  1. Thermoelectrically cooled water trap

    DOE Patents [OSTI]

    Micheels, Ronald H.

    2006-02-21

    A water trap system based on a thermoelectric cooling device is employed to remove a major fraction of the water from air samples, prior to analysis of these samples for chemical composition, by a variety of analytical techniques where water vapor interferes with the measurement process. These analytical techniques include infrared spectroscopy, mass spectrometry, ion mobility spectrometry and gas chromatography. The thermoelectric system for trapping water present in air samples can substantially improve detection sensitivity in these analytical techniques when it is necessary to measure trace analytes with concentrations in the ppm (parts per million) or ppb (parts per billion) partial pressure range. The thermoelectric trap design is compact and amenable to use in a portable gas monitoring instrumentation.

  2. Synthetic thermoelectric materials comprising phononic crystals

    DOE Patents [OSTI]

    El-Kady, Ihab F; Olsson, Roy H; Hopkins, Patrick; Reinke, Charles; Kim, Bongsang

    2013-08-13

    Synthetic thermoelectric materials comprising phononic crystals can simultaneously have a large Seebeck coefficient, high electrical conductivity, and low thermal conductivity. Such synthetic thermoelectric materials can enable improved thermoelectric devices, such as thermoelectric generators and coolers, with improved performance. Such synthetic thermoelectric materials and devices can be fabricated using techniques that are compatible with standard microelectronics.

  3. DOSIMETRY; RADIOISOTOPES; DECAY; ACCURACY; DATA COMPILATION;...

    Office of Scientific and Technical Information (OSTI)

    Radioactive decay data tables Kocher, D.C. 61 RADIATION PROTECTION AND DOSIMETRY; RADIOISOTOPES; DECAY; ACCURACY; DATA COMPILATION; DOSIMETRY; M CODES; COMPUTER CODES; DATA;...

  4. Removal of radioisotopes from waste solutions

    DOE Patents [OSTI]

    Kirby, H.W.

    1973-10-01

    The invention comprises removing radioisotopes from waste liquids or solutions by passing these through filters and through a column containing a suitable salt of phosphoric acid. (Official Gazette)

  5. List of DOE radioisotope customers with summary of radioisotope shipments, FY 1985

    SciTech Connect (OSTI)

    Baker, D.A.

    1986-08-01

    This document describes radioisotope distribution from DOE facilities to private firms including foreign and other DOE facilities. The information is divided into five sections: (1) isotope suppliers, facility contacts, and isotopes or services supplied; (2) customers, suppliers, and isotopes purchased; (3) isotopes purchased cross-referenced with customer numbers; (4) geographic locations of radioisotope customers; and (5) radioisotope sales and transfer - FY 1985.

  6. NSF/DOE Thermoelectric Partnership: High-Performance Thermoelectric...

    Broader source: Energy.gov (indexed) [DOE]

    An integrated approach towards efficient, scalable, and low cost thermoelectric waste heat recovery devices for vehicles An integrated approach towards efficient, scalable, and low ...

  7. Close-packed-array (CPA) thermoelectric module development status

    SciTech Connect (OSTI)

    Brittain, W.M. )

    1991-01-05

    Prior effort on the U.S. Department of Energy-sponsored Special Applications Radioisotope Thermoelectric Generator (RTG) Technology Program and Two-Watt RTG Program has focused on terrestrial applications where the RTG will be exposed to relatively low temperature thermal environments (subsea). Thus, effort has been oriented towards design optimization at cold junction temperatures in the 10 to 93 {degree}C (50 to 200 {degree}F) range. However, for other more severe design environments (such as space applications where a high heat rejection radiator temperature in the 177 to 204 {degree}C (350 to 400 {degree}F) range is required to minimize RTG size and weight, and high g shock/vibration capability is necessary) a modified thermoelectric module design is dictated. In order to minimize the RTG system size and weight, and to increase the mechanical strength of the thermoelectric module to withstand increased dynamic loads, a close-packed-array (CPA) module configuration is desirable. The monolithic nature of such a module generally results in greater shear and compression load capability than free-standing individual couples. A CPA module is especially attractive for terrestrial and space applications where severe structural loads will be imposed such as airborne deployment or planetary landers and penetrators.

  8. Development of Thermoelectric Technology for Automotive Waste...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Thermoelectric Technology for Automotive Waste Heat Recovery Development of Thermoelectric Technology for Automotive Waste Heat Recovery Overview and status of project to develop ...

  9. Enhancing Heat Recovery for Thermoelectric Devices | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Heat Recovery for Thermoelectric Devices Enhancing Heat Recovery for Thermoelectric Devices Presentation given at the 16th Directions in Engine-Efficiency and Emissions Research ...

  10. Thermoelectric Power Generation System with Loop Thermosyphon...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Thermoelectric Power Generation System with Loop Thermosyphon in Future High Efficiency ... More Documents & Publications Low and high Temperature Dual Thermoelectric Generation ...

  11. Investigations of Interfacial Structure in Thermoelectric Tellurides...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Investigations of Interfacial Structure in Thermoelectric Tellurides Discusses examples of work on the investigation of atomic structure of interfaces in thermoelectric tellurides ...

  12. Nanostructured High Temperature Bulk Thermoelectric Energy Conversion...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    High Temperature Bulk Thermoelectric Energy Conversion for Efficient Waste Heat Recovery Nanostructured High Temperature Bulk Thermoelectric Energy Conversion for Efficient Waste ...

  13. Proactive Strategies for Designing Thermoelectric Materials for...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    More Documents & Publications Proactive Strategies for Designing Thermoelectric Materials for Power Generation Thermoelectric Couple Demonstration of (In, Ce)-based Skutterudite ...

  14. The Industrialization of Thermoelectric Power Generation Technology...

    Broader source: Energy.gov (indexed) [DOE]

    Devices An integrated approach towards efficient, scalable, and low cost thermoelectric waste heat recovery devices for vehicles Automotive Thermoelectric Generators and HVAC

  15. Integrated Design and Manufacturing of Thermoelectric Generator...

    Broader source: Energy.gov (indexed) [DOE]

    Presents progress in cost-effective thermoelectric generator fabrication by thermal spraying of thermoelectric materials and other functional layers directly onto automotive ...

  16. Heilongjiang Mudanjiang Nongken Xinneng Thermoelectric Co Ltd...

    Open Energy Info (EERE)

    Heilongjiang Mudanjiang Nongken Xinneng Thermoelectric Co Ltd Jump to: navigation, search Name: Heilongjiang Mudanjiang Nongken Xinneng Thermoelectric Co., Ltd. Place: Mishan,...

  17. Concentrated Solar Thermoelectric Power | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Concentrated Solar Thermoelectric Power Concentrated Solar Thermoelectric Power This presentation was delivered at the SunShot Concentrating Solar Power (CSP) Program Review 2013, ...

  18. Vehicular Applications of Thermoelectrics | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Overivew of DOE projects developing thermoelectric generators for engine waste heat utilization and vehiclular thermoelectric heatingcooling. deer08fairbanks.pdf (5.58 MB) More ...

  19. Vehicular Thermoelectrics: A New Green Technology | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    (8.06 MB) More Documents & Publications Thermoelectrics: The New Green Automotive Technology Automotive Thermoelectric Generators and HVAC Solid-State Energy Conversion Overview

  20. Automotive Thermoelectric Generator (TEG) Controls

    Office of Energy Efficiency and Renewable Energy (EERE)

    Addresses functions to be controlled that make the difference between a barely functional and an efficient, cost-effective thermoelectric generator(TEG)

  1. Withdrawal from Production and Distribution of the Radioisotope...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Withdrawal from Production and Distribution of the Radioisotope Germanium-68 Used for Calibration Sources Withdrawal from Production and Distribution of the Radioisotope ...

  2. ENHANCED THERMAL VACUUM TEST CAPABILITY FOR RADIOISOTOPE POWER...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ENHANCED THERMAL VACUUM TEST CAPABILITY FOR RADIOISOTOPE POWER SYSTEMS AT THE IDAHO NATIONAL LABORATORY ... Radioisotope Generator (ASRG), the next generation space power generator. ...

  3. Superconducting thermoelectric generator

    DOE Patents [OSTI]

    Metzger, J.D.; El-Genk, M.S.

    1996-01-01

    An apparatus and method for producing electricity from heat. The present invention is a thermoelectric generator that uses materials with substantially no electrical resistance, often called superconductors, to efficiently convert heat into electrical energy without resistive losses. Preferably, an array of superconducting elements is encased within a second material with a high thermal conductivity. The second material is preferably a semiconductor. Alternatively, the superconducting material can be doped on a base semiconducting material, or the superconducting material and the semiconducting material can exist as alternating, interleaved layers of waferlike materials. A temperature gradient imposed across the boundary of the two materials establishes an electrical potential related to the magnitude of the temperature gradient. The superconducting material carries the resulting electrical current at zero resistivity, thereby eliminating resistive losses. The elimination of resistive losses significantly increases the conversion efficiency of the thermoelectric device.

  4. Superconducting thermoelectric generator

    DOE Patents [OSTI]

    Metzger, J.D.; El-Genk, M.S.

    1998-05-05

    An apparatus and method for producing electricity from heat is disclosed. The present invention is a thermoelectric generator that uses materials with substantially no electrical resistance, often called superconductors, to efficiently convert heat into electrical energy without resistive losses. Preferably, an array of superconducting elements is encased within a second material with a high thermal conductivity. The second material is preferably a semiconductor. Alternatively, the superconducting material can be doped on a base semiconducting material, or the superconducting material and the semiconducting material can exist as alternating, interleaved layers of waferlike materials. A temperature gradient imposed across the boundary of the two materials establishes an electrical potential related to the magnitude of the temperature gradient. The superconducting material carries the resulting electrical current at zero resistivity, thereby eliminating resistive losses. The elimination of resistive losses significantly increases the conversion efficiency of the thermoelectric device. 4 figs.

  5. Superconducting thermoelectric generator

    DOE Patents [OSTI]

    Metzger, John D.; El-Genk, Mohamed S.

    1998-01-01

    An apparatus and method for producing electricity from heat. The present invention is a thermoelectric generator that uses materials with substantially no electrical resistance, often called superconductors, to efficiently convert heat into electrical energy without resistive losses. Preferably, an array of superconducting elements is encased within a second material with a high thermal conductivity. The second material is preferably a semiconductor. Alternatively, the superconducting material can be doped on a base semiconducting material, or the superconducting material and the semiconducting material can exist as alternating, interleaved layers of waferlike materials. A temperature gradient imposed across the boundary of the two materials establishes an electrical potential related to the magnitude of the temperature gradient. The superconducting material carries the resulting electrical current at zero resistivity, thereby eliminating resistive losses. The elimination of resistive losses significantly increases the conversion efficiency of the thermoelectric device.

  6. BEST medical radioisotope production cyclotrons

    SciTech Connect (OSTI)

    Sabaiduc, Vasile; Milton, Bruce; Suthanthiran, Krishnan; Johnson, Richard R.; Gelbart, W. Z.

    2013-04-19

    Best Cyclotron Systems Inc (BCSI) is currently developing 14 MeV, 25 MeV, 35MeV and 70MeV cyclotrons for radioisotope production and research applications as well as the entire spectrum of targets and nuclear synthesis modules for the production of Positron Emission Tomography (PET), Single Photon Emission Computed Tomography (SPECT) and radiation therapy isotopes. The company is a subsidiary of Best Medical International, renowned in the field of medical instrumentation and radiation therapy. All cyclotrons have external negative hydrogen ion sources, four radial sectors with two dees in opposite valleys, cryogenic vacuum system and simultaneous beam extraction on opposite lines. The beam intensity ranges from 400 {mu}A to 1000 {mu}A, depending on the cyclotron energy and application.

  7. Role of Thermoelectrics in Vehicle Efficiency Increase | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Status of the Application of Thermoelectric Technology in Vehicles Potential of Thermoelectrics forOccupant Comfort and Fuel Efficiency Gains in Vehicle Applications Thermoelectric ...

  8. Development of a 100-Watt High Temperature Thermoelectric Generator...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    a 100-Watt High Temperature Thermoelectric Generator Development of a 100-Watt High Temperature Thermoelectric Generator Test results for low and high temperature thermoelectric ...

  9. Quantum Well Thermoelectrics and Waste Heat Recovery | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    High-Efficiency Quantum-Well Thermoelectrics for Waste Heat Power Generation Recent Progress in the Development of High Efficiency Thermoelectrics High Temperature Thermoelectric ...

  10. Progress in Thermoelectrical Energy Recovery from a Light Truck...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    of an Exhaust Thermoelectric Generator of a GM Sierra Pickup Truck Thermoelectrical Energy Recovery From the Exhaust of a Light Truck Automotive Thermoelectric Generators and HVAC

  11. NSF/DOE Thermoelectric Partnership: Inorganic-Organic Hybrid...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Inorganic-Organic Hybrid Thermoelectrics NSFDOE Thermoelectric Partnership: Inorganic-Organic Hybrid Thermoelectrics 2011 DOE Hydrogen and Fuel Cells Program, and Vehicle ...

  12. US Department of Energy radioisotope customers with summary of radioisotope shipments, FY 1988

    SciTech Connect (OSTI)

    Van Houten, N.C.

    1989-06-01

    Pacific Northwest Laboratory (PNL) prepared this edition of the radioisotope customer list at the request of the Office of Health and Environmental Research (ER-73), Office of Energy Research, US Department of Energy (DOE). This is the 25th report in a series dating from 1964. This report covers DOE radioisotope sales and distribution activities by its facilities to domestic, foreign and other DOE facilities for FY 1988. The report is divided into five sections: radioisotope suppliers, facility contacts, and radioisotopes or services supplied; a list of customers, suppliers, and radioisotopes purchased; a list of radioisotopes purchased cross-referenced to customer numbers; geographic locations of radioisotope customers; and radioisotope sales and transfers -- FY 1988. Radioisotopes not previously reported in this series of reports were argon-37, arsenic-72, arsenic-73, bismuth-207, gadolinium-151, rhenium-188, rhodium-101, selenium-72, xenon-123 and zirconium-88. The total value of DOE radioisotope sales for FY 1988 was $11.1 million, an increase of 3% from FY 1987.

  13. 3rd Thermoelectrics Applications Workshop 2012

    Broader source: Energy.gov [DOE]

    Tuesday, March 20, 2012Opening Plenary SessionThermoelectric Applications IThermoelectric Applications IIThermoelectric Technologies

  14. Investigations of Interfacial Structure in Thermoelectric Tellurides

    Office of Energy Efficiency and Renewable Energy (EERE)

    Discusses examples of work on the investigation of atomic structure of interfaces in thermoelectric tellurides

  15. High performance thermoelectric nanocomposite device

    DOE Patents [OSTI]

    Yang, Jihui; Snyder, Dexter D.

    2011-10-25

    A thermoelectric device includes a nanocomposite material with nanowires of at least one thermoelectric material having a predetermined figure of merit, the nanowires being formed in a porous substrate having a low thermal conductivity and having an average pore diameter ranging from about 4 nm to about 300 nm.

  16. Methods of synthesizing thermoelectric materials

    DOE Patents [OSTI]

    Ren, Zhifeng; Chen, Shuo; Liu, Wei-Shu; Wang, Hengzhi; Wang, Hui; Yu, Bo; Chen, Gang

    2016-04-05

    Methods for synthesis of thermoelectric materials are disclosed. In some embodiments, a method of fabricating a thermoelectric material includes generating a plurality of nanoparticles from a starting material comprising one or more chalcogens and one or more transition metals; and consolidating the nanoparticles under elevated pressure and temperature, wherein the nanoparticles are heated and cooled at a controlled rate.

  17. Thermoelectric system for an engine

    DOE Patents [OSTI]

    Mcgilvray, Andrew N.; Vachon, John T.; Moser, William E.

    2010-06-22

    An internal combustion engine that includes a block, a cylinder head having an intake valve port and exhaust valve port formed therein, a piston, and a combustion chamber defined by the block, the piston, and the head. At least one thermoelectric device is positioned within either or both the intake valve port and the exhaust valve port. Each of the valves is configured to move within a respective intake and exhaust valve port thereby causing said valves to engage the thermoelectric devices resulting in heat transfer from the valves to the thermoelectric devices. The intake valve port and exhaust valve port are configured to fluidly direct intake air and exhaust gas, respectively, into the combustion chamber and the thermoelectric device is positioned within the intake valve port, and exhaust valve port, such that the thermoelectric device is in contact with the intake air and exhaust gas.

  18. Electronic cooling using thermoelectric devices

    SciTech Connect (OSTI)

    Zebarjadi, M.

    2015-05-18

    Thermoelectric coolers or Peltier coolers are used to pump heat in the opposite direction of the natural heat flux. These coolers have also been proposed for electronic cooling, wherein the aim is to pump heat in the natural heat flux direction and from hot spots to the colder ambient temperature. In this manuscript, we show that for such applications, one needs to use thermoelectric materials with large thermal conductivity and large power factor, instead of the traditionally used high ZT thermoelectric materials. We further show that with the known thermoelectric materials, the active cooling cannot compete with passive cooling, and one needs to explore a new set of materials to provide a cooling solution better than a regular copper heat sink. We propose a set of materials and directions for exploring possible materials candidates suitable for electronic cooling. Finally, to achieve maximum cooling, we propose to use thermoelectric elements as fins attached to copper blocks.

  19. Concentrated Thermoelectric Power

    Broader source: Energy.gov [DOE]

    This fact sheet describes a concentrated solar hydroelectric power project awarded under the DOE's 2012 SunShot Concentrating Solar Power R&D award program. The team, led by MIT, is working to demonstrate concentrating solar thermoelectric generators with >10% solar-to-electrical energy conversion efficiency while limiting optical concentration to less than a factor of 10 and potentially less than 4. When combined with thermal storage, CSTEGs have the potential to provide electricity day and night using no moving parts at both the utility and distributed scale.

  20. Manufacture of thermoelectric generator structures by fiber drawing

    DOE Patents [OSTI]

    McIntyre, Timothy J; Simpson, John T; West, David L

    2014-11-18

    Methods of manufacturing a thermoelectric generator via fiber drawing and corresponding or associated thermoelectric generator devices are provided.

  1. Potential of Thermoelectrics forOccupant Comfort and Fuel Efficiency...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    More Documents & Publications Vehicle Fuel Economy Improvement through Thermoelectric Waste Heat Recovery Caterpillar Diesel Racing: Yesterday & Today Thermoelectric Conversion of ...

  2. NSF/DOE Thermoelectrics Partnership: Purdue … GM Partnership...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Automotive Thermoelectric Modules with Scalable Thermo- and Electro-Mechanical Interfaces NSFDOE Thermoelectics Partnership: Thermoelectrics for Automotive Waste Heat ...

  3. Develop Thermoelectric Technology for Automotive Waste Heat Recovery...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    More Documents & Publications Develop Thermoelectric Technology for Automotive Waste Heat Recovery Engineering and Materials for Automotive Thermoelectric Applications Electrical ...

  4. NSF/DOE Thermoelectics Partnership: Thermoelectrics for Automotive...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Thermoelectics Partnership: Thermoelectrics for Automotive Waste Heat Recovery NSFDOE Thermoelectics Partnership: Thermoelectrics for Automotive Waste Heat Recovery 2011 DOE ...

  5. Thermal Strategies for High Efficiency Thermoelectric Power Generation...

    Broader source: Energy.gov (indexed) [DOE]

    More Documents & Publications Proactive Strategies for Designing Thermoelectric Materials for Power Generation Proactive Strategies for Designing Thermoelectric Materials for Power ...

  6. Thermoelectric generator for motor vehicle

    DOE Patents [OSTI]

    Bass, John C.

    1997-04-29

    A thermoelectric generator for producing electric power for a motor vehicle from the heat of the exhaust gasses produced by the engine of the motor vehicle. The exhaust gasses pass through a finned heat transfer support structure which has seat positions on its outside surface for the positioning of thermoelectric modules. A good contact cylinder provides a framework from which a spring force can be applied to the thermoelectric modules to hold them in good contact on their seats on the surface of the heat transfer support structure.

  7. NSF/DOE Thermoelectics Partnership: Thermoelectrics for Automotive Waste

    Broader source: Energy.gov (indexed) [DOE]

    Heat Recovery | Department of Energy 4_xu_2011_p.pdf (2.97 MB) More Documents & Publications NSF/DOE Thermoelectrics Partnership: Purdue … GM Partnership on Thermoelectrics for Automotive Waste Heat Recovery NSF/DOE Thermoelectrics Partnership: Thermoelectrics for Automotive Waste Heat Recovery NSF/DOE Thermoelectrics Partnership: Thermoelectrics for Automotive Waste Heat Recovery

  8. Thermoelectric Materials, Devices and Systems:

    Energy Savers [EERE]

    ... However the use of thermoelectric modules as solid state heat pumps for 42 heating and cooling applications using the opposite Peltier effect is far more common than their use as ...

  9. Phase Stability, Crystal Structure, and Thermoelectric Properties...

    Office of Scientific and Technical Information (OSTI)

    and Thermoelectric Properties of Cu12Sb4S13xSex Solid Solutions Citation Details In-Document Search Title: Phase Stability, Crystal Structure, and Thermoelectric Properties ...

  10. Thermoelectric Applications to Truck Essential Power

    SciTech Connect (OSTI)

    John C. Bass; Norbert B. Elsner

    2001-12-12

    The subjects covered in this report are: thermoelectrics, 1-kW generator for diesel engine; self-powered heater; power for wireless data transmission; and quantum-well thermoelectrics.

  11. Benefits of Thermoelectric Technology for the Automobile

    Broader source: Energy.gov [DOE]

    Discusses improved fuel efficiency and other benefits of automotive application of thermoelectric (power generation and heating/cooling) and the need for production quantities of high-efficiency thermoelectric modules

  12. Thermoelectric Mechanical Reliability | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    DRAFT - PRE-DECISIONAL -DRAFT - FOR OFFICIAL USE ONLY - DRAFT Thermoelectric Materials, Devices and Systems: 1 Technology Assessment 2 Contents 3 1. Thermoelectric Generation ................................................................................................................... 2 4 2. Technology Assessment and Potential ................................................................................................. 3 5 2.1 Performance Advances

  13. RADIOISOTOPE INVENTORY FOR TSPA-SR

    SciTech Connect (OSTI)

    C. Leigh; R. Rechard

    2001-01-30

    The total system performance assessment for site recommendation (TSPA-SR), on Yucca Mountain, as a site (if suitable) for disposal of radioactive waste, consists of several models. The Waste Form Degradation Model (i.e, source term) of the TSPA-SR, in turn, consists of several components. The Inventory Component, discussed here, defines the inventory of 26 radioisotopes for three representative waste categories: (1) commercial spent nuclear fuel (CSNF), (2) US Department of Energy (DOE) spent nuclear fuel (DSNF), and (3) high-level waste (HLW). These three categories are contained and disposed of in two types of waste packages (WPs)--CSNF WPs and co-disposal WPs, with the latter containing both DSNF and HLW. Three topics are summarized in this paper: first, the transport of radioisotopes evaluated in the past; second, the development of the inventory for the two WP types; and third, the selection of the most important radioisotopes to track in TSPA-SR.

  14. Development of Marine Thermoelectric Heat Recovery Systems

    Broader source: Energy.gov [DOE]

    Discusses benefits of integration of thermoelectrics into the marine industry, research program milestones, and prototype TEG design and integration

  15. Thermoelectric Bulk Materials from the Explosive Consolidation...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Thermoelectric Bulk Materials from the Explosive Consolidation of Nanopowders Describes technique of explosively consolidating nanopowders to yield fully dense, consolidated, ...

  16. Nanostructured Thermoelectric Materials and High Efficiency Power...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Nanostructured Thermoelectric Materials and High Efficiency Power Generation Modules Home ... electrical conductivity and thermopower and, simultaneously, low thermal conductivity. ...

  17. Reliability of Transport Properties for Bulk Thermoelectrics

    Broader source: Energy.gov [DOE]

    Presents international round-robin study to ensure quality of transport data and figure of merit of thermoelectric materials

  18. Thermoelectric Mechanical Reliability | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    1 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation pm012_wereszczak_2011_o.pdf (498.73 KB) More Documents & Publications Thermoelectrics Theory and Structure Transport Properties, Thermal Response, and Mechanical Reliability of Thermoelectric Materials and Devices for Automotive Waste Heat Recovery Thermoelectric Mechanical Reliability

  19. Thermoelectrics Theory and Structure | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    2 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting pm013_singh_2012_o.pdf (1.45 MB) More Documents & Publications Thermoelectrics Theory and Structure Thermoelectric Materials for Automotive Applications Recent Theoretical Results for Advanced Thermoelectric Materials

  20. Thermoelectrics Theory and Structure | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    1 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation pm012_wereszczak_2011_o.pdf (498.73 KB) More Documents & Publications Thermoelectric Mechanical Reliability Transport Properties, Thermal Response, and Mechanical Reliability of Thermoelectric Materials and Devices for Automotive Waste Heat Recovery Thermoelectric Mechanical Reliability

  1. Improved Thermoelectric Devices: Advanced Semiconductor Materials for Thermoelectric Devices

    SciTech Connect (OSTI)

    2009-12-11

    Broad Funding Opportunity Announcement Project: Phononic Devices is working to recapture waste heat and convert it into usable electric power. To do this, the company is using thermoelectric devices, which are made from advanced semiconductor materials that convert heat into electricity or actively remove heat for refrigeration and cooling purposes. Thermoelectric devices resemble computer chips, and they manage heat by manipulating the direction of electrons at the nanoscale. These devices aren’t new, but they are currently too inefficient and expensive for widespread use. Phononic Devices is using a high-performance, cost-effective thermoelectric design that will improve the device’s efficiency and enable electronics manufacturers to more easily integrate them into their products.

  2. List of DOE radioisotope customers with summary of radioisotope shipments, FY 1979

    SciTech Connect (OSTI)

    Burlison, J.S.

    1980-06-01

    The fifteenth edition of the radioisotope customer list was prepared at the request of the Division of Financial Services, Office of the Assistant Secretary for Environment, Department of Energy (DOE). This document lists DOE's radioisotope production and distribution activities by its facilities at Argonne National Laboratory; Pacific Northwest Laboratory; Brookhaven National Laboratory; Hanford Engineering Development Laboratory; Idaho Operations Office; Los Alamos Scientific Laboratory; Mound Facility; Oak Ridge National Laboratory; Rocky Flats Area Office; Savannah River Laboratory; and UNC Nuclear Industries, Inc. The information is divided into five sections: Isotope suppliers, facility, contracts and isotopes or services supplied; alphabetical list of customers, and isotopes purchased; alphabetical list of isotopes cross-referenced to customer numbers; geographical location of radioisotope customers; and radioisotope sales and transfers-FY 1979.

  3. List of DOE radioisotope customers with summary of radioisotope shipments, FY 1981

    SciTech Connect (OSTI)

    Burlison, J.S.

    1982-09-01

    The seventeenth edition of the radioisotope customer list was prepared at the request of the Office of Health and Environmental Research, Office of Energy Research, Department of Energy (DOE). This document lists DOE's radioisotope production and distribution activities by its facilities at Argonne National Laboratory: Pacific Northwest Laboratory; Brookhaven National Laboratory; Hanford Engineering Development Laboratory; Idaho Operations Office; Los Alamos Scientific Laboratory; Mound Facility; Oak Ridge National Laboratory; Savannah River Laboratory; and UNC Nuclear Industries, Inc. The information is divided into five sections: (1) isotope suppliers, facility, contracts and isotopes or services supplied; (2) alphabetical list of customers, and isotopes purchased; (3) alphabetical list of isotopes cross-referenced to customer numbers; (4) geographical location of radioisotope customers; and (5) radioisotope sales and transfers-FY 1980.

  4. List of DOE radioisotope customers with summary of radioisotope shipments, FY 1980

    SciTech Connect (OSTI)

    Burlison, J.S.

    1981-08-01

    The sixteenth edition of the radioisotope customer list was prepared at the request of the Office of Health and Environmental Research, Office of energy Research, Department of Energy (DOE). This document lists DOE's radioisotope production and distribution activities by its facilities at Argonne National Laboratory; Pacific Northwest Laboratory; Brookhaven National Laboraory; Hanford Engineering Development Laboratory; Idaho Operations Office; Los Alamos Scientific Laboratory; Mound Facility; Oak Ridge National Laboratory; Savannah River Laboratory; and UNC Nuclear Industries, Inc. The information is divided into five sections: (1) isotope suppliers, facility, contracts and isotopes or services supplied; (2) alphabetical list of customers, and isotopes purchased; (3) alphabetical list of isotopes cross-referenced to customer numbers; (4) geographical location of radioisotope customers; and (5) radioisotope sales and transfers-FY 1980.

  5. Effect of Inert Cover Gas on Performance of Radioisotope Stirling Space Power System

    SciTech Connect (OSTI)

    Carpenter, Robert; Kumar, V; Ore, C; Schock, Alfred

    2001-01-01

    This paper describes an updated Orbital design of a radioisotope Stirling power system and its predicted performance at the beginning and end of a six-year mission to the Jovian moon Europa. The design is based on General Purpose Heat Source (GPHS) modules identical to those previously developed and safety-qualified by the Department of Energy (DOE) which were successfully launched to Jupiter and Saturn by the Jet Propulsion Laboratory (JPL). In each generator, the heat produced by the decay of the Pu-238 isotope is converted to electric power by two free-piston Stirling engines and linear alternators developed by Stirling Technology Company (STC), and their rejected waste heat is transported to radiators by heat pipes. The principal difference between the proposed system design and previous Orbital designs (Or et al. 2000) is the thermal insulation between the heat source and the generator's housing. Previous designs had employed multifoil insulation, whereas the design described here employs Min-K-1800 thermal insulation. Such insulation had been successfully used by Teledyne and GE in earlier RTGs (Radioisotope Thermoelectric Generators). Although Min-K is a much poorer insulator than multifoil in vacuum and requires a substantially greater thickness for equivalent performance, it offers compensating advantages. Specifically it makes it possible to adjust the generator's BOM temperatures by filling its interior volume with inert cover gas. This makes it possible to meet the generator's BOM and EOM performance goals without exceeding its allowable temperature at the beginning of the mission.

  6. Analysis, Optimization, and Assessment of Radioisotope Thermophotovoltaic System Design for an Illustrative Space Mission

    SciTech Connect (OSTI)

    Schock, Alfred; Mukunda, Meera; Summers, G.

    1994-06-28

    A companion paper presented at this conference described the design of a Radioisotope Thermophotovoltaic (RTPV) Generator for an illustrative space mission (Pluto Fast Flyby). It presented a detailed design of an integrated system consisting of a radioisotope heat source, a thermophotovoltaic converter, and an optimized heat rejection system. The present paper describes the thermal, electrical, and structural analyses which led to that optimized design, and compares the computed RTPV performance to that of a Radioisotope Thermoelectric Generator (RTG) designed for the same mission. RTPV's are of course much less mature than RTGs, but our results indicate that - when fully developed - they could result in a 60% reduction of the heat source's mass, cost, and fuel loading, a 50% reduction of generator mass, a tripling of the power system's specific power, and a quadrupling of its efficiency. The paper concludes by briefly summarizing the RTPV's current technology status and assessing its potential applicability for the PFF mission. For other power systems (e.g. RTGs), demonstrating their flight readiness for a long mission is a very time-consuming process to determine the long-term effect of temperature-induced degradation mechanisms. But for the case of the described RTPV design, the paper lists a number of factors, primarily its cold (0 to 10 degrees C) converter temperature, that may greatly reduce the need for long-term tests to demonstrate generator lifetime. In any event, our analytical results suggest that the RTPV generator, when developed by DOE and/or NASA, would be quite valuable not only for the Pluto mission but also for other future missions requiring small, long-lived, low mass generators. Another copy is in the Energy Systems files.

  7. Thermoelectric refrigerator having improved temperature stabilization means

    DOE Patents [OSTI]

    Falco, Charles M.

    1982-01-01

    A control system for thermoelectric refrigerators is disclosed. The thermoelectric refrigerator includes at least one thermoelectric element that undergoes a first order change at a predetermined critical temperature. The element functions as a thermoelectric refrigerator element above the critical temperature, but discontinuously ceases to function as a thermoelectric refrigerator element below the critical temperature. One example of such an arrangement includes thermoelectric refrigerator elements which are superconductors. The transition temperature of one of the superconductor elements is selected as the temperature control point of the refrigerator. When the refrigerator attempts to cool below the point, the metals become superconductors losing their ability to perform as a thermoelectric refrigerator. An extremely accurate, first-order control is realized.

  8. Semimetal/Semiconductor Nanocomposites for Thermoelectrics

    SciTech Connect (OSTI)

    Lu, Hong; Burke, Peter G.; Gossard, Arthur C.; Zeng, Gehong; Ramu, Ashok T.; Bahk, Je-Hyeong; Bowers, John E.

    2011-04-15

    In this work, we present research on semimetal-semiconductor nanocomposites grown by molecular beam epitaxy (MBE) for thermoelectric applications. We study several different III-V semiconductors embedded with semimetallic rare earth-group V (RE-V) compounds, but focus is given here to ErSb:InxGa1-xSb as a promising p-type thermoelectric material. Nano­structures of RE-V compounds are formed and embedded within the III-V semiconductor matrix. By codoping the nanocomposites with the appropriate dopants, both n-type and p-type materials have been made for thermoelectric applications. The thermoelectric properties have been engineered for enhanced thermoelectric device performance. Segmented thermoelectric power generator modules using 50 ?m thick Er-containing nanocomposites have been fabricated and measured. Research on different rare earth elements for thermoelectrics is discussed.

  9. Potential Thermoelectric Applications in Diesel Vehicles | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Energy Thermoelectric Applications in Diesel Vehicles Potential Thermoelectric Applications in Diesel Vehicles 2003 DEER Conference Presentation: BSST, LLC 2003_deer_crane.pdf (618.11 KB) More Documents & Publications Vehicle Fuel Economy Improvement through Thermoelectric Waste Heat Recovery Thermoelectrics: The New Green Automotive Technology Challenges and Opportunities in Thermoelectric Materials Research for Automotive Applications

  10. Radioisotope thermoelectric generator transportation system safety analysis report for packaging. Volumes 1 and 2

    SciTech Connect (OSTI)

    Ferrell, P.C.

    1996-04-18

    This SARP describes the RTG Transportation System Package, a Type B(U) packaging system that is used to transport an RTG or similar payload. The payload, which is included in this SARP, is a generic, enveloping payload that specifically encompasses the General Purpose Heat Source (GPHS) RTG payload. The package consists of two independent containment systems mounted on a shock isolation transport skid and transported within an exclusive-use trailer.

  11. Concentrated Solar Thermoelectric Power

    SciTech Connect (OSTI)

    Chen, Gang; Ren, Zhifeng

    2015-07-09

    The goal of this project is to demonstrate in the lab that solar thermoelectric generators (STEGs) can exceed 10% solar-to-electricity efficiency, and STEGs can be integrated with phase-change materials (PCM) for thermal storage, providing operation beyond daylight hours. This project achieved significant progress in many tasks necessary to achieving the overall project goals. An accurate Themoelectric Generator (TEG) model was developed, which included realistic treatment of contact materials, contact resistances and radiative losses. In terms of fabricating physical TEGs, high performance contact materials for skutterudite TE segments were developed, along with brazing and soldering methods to assemble segmented TEGs. Accurate measurement systems for determining device performance (in addition to just TE material performance) were built for this project and used to characterize our TEGs. From the optical components’ side, a spectrally selective cermet surface was developed with high solar absorptance and low thermal emittance, with thermal stability at high temperature. A measurement technique was also developed to determine absorptance and total hemispherical emittance at high temperature, and was used to characterize the fabricated spectrally selective surfaces. In addition, a novel reflective cavity was designed to reduce radiative absorber losses and achieve high receiver efficiency at low concentration ratios. A prototype cavity demonstrated that large reductions in radiative losses were possible through this technique. For the overall concentrating STEG system, a number of devices were fabricated and tested in a custom built test platform to characterize their efficiency performance. Additionally, testing was performed with integration of PCM thermal storage, and the storage time of the lab scale system was evaluated. Our latest testing results showed a STEG efficiency of 9.6%, indicating promising potential for high performance concentrated STEGs.

  12. High Performance Bulk Thermoelectric Materials

    SciTech Connect (OSTI)

    Ren, Zhifeng

    2013-03-31

    Over 13 plus years, we have carried out research on electron pairing symmetry of superconductors, growth and their field emission property studies on carbon nanotubes and semiconducting nanowires, high performance thermoelectric materials and other interesting materials. As a result of the research, we have published 104 papers, have educated six undergraduate students, twenty graduate students, nine postdocs, nine visitors, and one technician.

  13. NSF/DOE Thermoelectrics Partnership: Purdue … GM Partnership on Thermoelectrics for Automotive Waste Heat Recovery

    Broader source: Energy.gov [DOE]

    Reviews results in developing commercially viable thermoelectric generators for efficient conversion of automotive exhaust waste heat to electricity

  14. Develop Thermoelectric Technology for Automotive Waste Heat Recovery...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Develop thermoelectric technology for waste heat recovery with a 10% fuel economy ... Engineering and Materials for Automotive Thermoelectric Applications Electrical and ...

  15. Thermoelectric FabricsŽ based on carbon nanotube composites...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Thermoelectric Fabrics based on carbon nanotube composites Composite films of ... multiple element modules, results in thermoelectric fabrics with increased power output ...

  16. Develop Thermoelectric Technology for Automotive Waste Heat Recovery...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Opportunities and Challenges of Thermoelectrlic Waste Heat Recovery in the Automotive Industry On Thermoelectric Properties of p-Type Skutterudites Development of Thermoelectric ...

  17. Feasibility of OnBoard Thermoelectric Generation for Improved...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    OnBoard Thermoelectric Generation for Improved Vehicle Fuel Economy Feasibility of OnBoard Thermoelectric Generation for Improved Vehicle Fuel Economy Poster presentation at the ...

  18. Thermoelectric Conversion of Waste Heat to Electricity in an...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    MB) More Documents & Publications Thermoelectric Conversion of Waste Heat to Electricity in an IC Engine Powered Vehicle Thermoelectric Conversion of Waste Heat to Electricity ...

  19. Combustion Exhaust Gas Heat to Power Using Thermoelectric Engines...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Exhaust Gas Heat to Power Using Thermoelectric Engines Combustion Exhaust Gas Heat to Power Using Thermoelectric Engines Discusses a novel TEG which utilizes a proprietary stack ...

  20. Development of a 500 Watt High Temperature Thermoelectric Generator...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    a 500 Watt High Temperature Thermoelectric Generator Development of a 500 Watt High Temperature Thermoelectric Generator A low temperature TEG has been built and tested providing ...

  1. Thermoelectric Conversion of Wate Heat to Electricity in an IC...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Wate Heat to Electricity in an IC Engine Powered Vehicle Thermoelectric Conversion of Wate ... MB) More Documents & Publications Thermoelectric Conversion of Waste Heat to ...

  2. Atomic-Scale Mapping of Thermoelectric Power on Graphene: Role...

    Office of Scientific and Technical Information (OSTI)

    Mapping of Thermoelectric Power on Graphene: Role of Defects and Boundaries Citation Details In-Document Search Title: Atomic-Scale Mapping of Thermoelectric Power on ...

  3. Thermoelectric Conversion of Waste Heat to Electricity in an...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Efficiency Improvement in an Over the Road Diesel Powered Engine System by the Application of Advanced Thermoelectric Systems Implemented in a Hybrid Configuration Thermoelectric ...

  4. Thermoelectric Conversion of Waste Heat to Electricity in an...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Waste Heat to Electricity in an IC Engine-Powered Vehicle Thermoelectric Conversion of Waste Heat to Electricity in an IC Engine Powered Vehicle Thermoelectric Conversion of Wate

  5. Thermoelectric Conversion of Exhaust Gas Waste Heat into Usable...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Exhaust Gas Waste Heat into Usable Electricity Thermoelectric Conversion of Exhaust Gas ... More Documents & Publications Skutterudite Thermoelectric Generator For Automotive Waste ...

  6. Low and high Temperature Dual Thermoelectric Generation Waste...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    and high Temperature Dual Thermoelectric Generation Waste Heat Recovery System for Light-Duty Vehicles Low and high Temperature Dual Thermoelectric Generation Waste Heat Recovery System ...

  7. Multilayer Thin-Film Thermoelectric Materials for Vehicle Applications...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Multilayer Thin-Film Thermoelectric Materials for Vehicle Applications Multilayer Thin-Film Thermoelectric Materials for Vehicle Applications 2004 Diesel Engine Emissions Reduction ...

  8. Thermoelectrical Energy Recovery From the Exhaust of a Light...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    More Documents & Publications The Effects of an Exhaust Thermoelectric Generator of a GM Sierra Pickup Truck Progress in Thermoelectrical Energy Recovery from a Light Truck Exhaust ...

  9. Development of Cost-Competitive Advanced Thermoelectric Generators...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Cost-Competitive Advanced Thermoelectric Generators for Direct Conversion of Vehicle Waste Heat into Useful Electrical Power Development of Cost-Competitive Advanced Thermoelectric...

  10. Overview of Progress in Thermoelectric Power Generation Technologies...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Overview of Thermoelectric Power Generation Technologies in Japan Overview of Thermoelectric Power Generation Technologies in Japan Overview of Japanese Activities in ...

  11. Innovative Nano-structuring Routes for Novel ThermoelectricMaterials...

    Broader source: Energy.gov (indexed) [DOE]

    Presents new concepts for high performance nanostructured bulk thermoelectric materials lee.pdf (1.98 MB) More Documents & Publications Thermoelectric Materials for Automotive ...

  12. An Overview of Thermoelectric Waste Heat Recovery Activities...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    An Overview of Thermoelectric Waste Heat Recovery Activities in Europe An Overview of Thermoelectric Waste Heat Recovery Activities in Europe An overview presentation of R&D ...

  13. Probing strong Kondo disorder with measurements of thermoelectric...

    Office of Scientific and Technical Information (OSTI)

    Probing strong Kondo disorder with measurements of thermoelectric power Title: Probing strong Kondo disorder with measurements of thermoelectric power Authors: White, B. D. ; ...

  14. Thermoelectrics: From Space Power Systems to Terrestrial Waste...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Thermoelectrics: From Space Power Systems to Terrestrial Waste Heat Recovery Applications Thermoelectrics: From Space Power Systems to Terrestrial Waste Heat Recovery Applications ...

  15. Inorganic-Organic Hybrid Thermoelectrics | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Inorganic-Organic Hybrid Thermoelectrics Inorganic-Organic Hybrid Thermoelectrics Large-scale synthesis of inorganic and organic nanomaterials (single-crystalline nanowires and ...

  16. A Thermoelectric Generator with an Intermediate Heat Exchanger...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    System for Light-Duty Vehicles Thermoelectric Power Generation System with Loop Thermosyphon in Future High Efficiency Hybrid Vehicles Automotive Thermoelectric Generators and HVAC

  17. Progress toward Development of a High-Efficiency Zonal Thermoelectric...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    toward Development of a High-Efficiency Zonal Thermoelectric HVAC System for Automotive Applications Progress toward Development of a High-Efficiency Zonal Thermoelectric HVAC ...

  18. Glass-like thermal conductivity in high efficiency thermoelectric...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    thermal conductivity in high efficiency thermoelectric materials Glass-like thermal conductivity in high efficiency thermoelectric materials Discusses strategies to design ...

  19. Thermoelectric Conversion of Waste Heat to Electricity in an...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    thermoelectrics on a OTR truck PDF icon schock.pdf More Documents & Publications Thermoelectric Conversion of Waste Heat to Electricity in an IC Engine Powered Vehicle...

  20. Sandia Researchers Are First to Measure Thermoelectric Behavior...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ... Thermoelectric devices convert heat to electricity and have no moving parts, making them extremely attractive for cooling and energy harvesting applications. Thermoelectric ...

  1. A Solution Route to Thermoelectric Oxide Nanoparticles - A Sol...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    A Solution Route to Thermoelectric Oxide Nanoparticles - A Sol-Gel Process Employing Heterometallic Alkoxides A Solution Route to Thermoelectric Oxide Nanoparticles - A Sol-Gel ...

  2. Nanostructures boost the thermoelectric performance of PbS (Journal...

    Office of Scientific and Technical Information (OSTI)

    Nanostructures boost the thermoelectric performance of PbS Citation Details In-Document Search Title: Nanostructures boost the thermoelectric performance of PbS In situ ...

  3. Develop Thermoelectric Technology for Automotive Waste Heat Recovery...

    Broader source: Energy.gov (indexed) [DOE]

    Skutterudite Thermoelectric Generator For Automotive Waste Heat Recovery Thermoelectric Conversion of Exhaust Gas Waste Heat into Usable Electricity Development of Cost-Competitive ...

  4. Probabilistic Mechanical Reliability Prediction of Thermoelectric Legs

    SciTech Connect (OSTI)

    Jadaan, Osama M.; Wereszczak, Andrew A

    2009-05-01

    The probability of failure, Pf, for various square-arrayed thermoelectric device designs using bismuth telluride, lead telluride, or skutterudite thermoelectric materials were estimated. Only volume- or bulk-based Pf analysis was considered in this study. The effects of the choice of the thermoelectric material, the size of the leg array, the height of the thermoelectric legs, and the boundary conditions on the Pf of thermoelectric devices were investigated. Yielding of the solder contacts and mounting layer was taken into account. The modeling results showed that the use of longer legs, using skutterudites, allowing the thermoelectric device to freely deform while under a thermal gradient, and using smaller arrays promoted higher probabilities of survival.

  5. Thermoelectrics | Solid State Solar Thermal Energy Conversion

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Thermoelectrics One of the central themes of S3TEC is to develop more efficient thermoelectric materials to directly convert heat into electricity via the Seebeck effect, or provide cooling via the Peltier effect. Their ability to harvest waste heat and deliver cooling power through solid-state devices without moving parts makes them important candidates of sustainable energy technologies in the future. Despite the benefits, the current bottleneck of thermoelectric technology is its relatively

  6. Connecting Thermoelectric Performance and Topological-Insulator...

    Office of Scientific and Technical Information (OSTI)

    Publisher's Accepted Manuscript: Connecting Thermoelectric Performance and Topological-Insulator Behavior: BiTe and BiTeSe from First Principles Prev Next Title: ...

  7. Correlation Between Structure and Thermoelectric Properties of...

    Broader source: Energy.gov (indexed) [DOE]

    Rapid solidified precursor converted into crystalline bulks under pressure produced thermoelectric materials of nano-sized grains with strongly coupled grain boundaries, achieving ...

  8. High-Temperature Thermoelectric Materials Characterization for...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    High-Temperature Thermoelectric Materials Characterization for Automotive Waste Heat Recovery: Success Stories from the High Temperature Materials Laboratory (HTML) User Program...

  9. Thermoelectric Activities of European Community within Framework...

    Broader source: Energy.gov (indexed) [DOE]

    Bulk Materials and Device Development Overview of Fraunhofer IPM Activities in High Temperature Bulk Materials and Device Development Automotive Thermoelectric Generators and HVAC

  10. Thermoelectric Materials by Design, Computational Theory and...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    by Design, Computational Theory and Structure Thermoelectric Materials by Design, Computational Theory and Structure 2009 DOE Hydrogen Program and Vehicle Technologies Program...

  11. Proactive Strategies for Designing Thermoelectric Materials for...

    Broader source: Energy.gov (indexed) [DOE]

    New p-type and n-type multiple-rattler skutterudite thermoelectric materials design, synthesis, fabrication, and characterization for power generation using vehicle exhaust waste ...

  12. Vehicle Fuel Economy Improvement through Thermoelectric Waste...

    Broader source: Energy.gov (indexed) [DOE]

    Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005deercrane.pdf (549.96 KB) More Documents & Publications Potential of Thermoelectrics forOccupant ...

  13. Engineering and Materials for Automotive Thermoelectric Applications...

    Broader source: Energy.gov (indexed) [DOE]

    cooling and heating with TE devices; discovery and development of highly efficient TE materials. yang.pdf (4.47 MB) More Documents & Publications Develop Thermoelectric ...

  14. Development of Marine Thermoelectric Heat Recovery Systems

    Broader source: Energy.gov [DOE]

    Thermoelectric generator prototypes are evaluated in a dedicated hybrid vessel test platform fabricated from an encapsulated lifeboat to optimize performance and reliability for marine industry applications

  15. Novel Nanostructured Thermoelectrics | Center for Energy Efficient...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    materials with improved thermoelectric power generation capabilities, the path to that goal ... electrical conductivity, and reduce the electronic and lattice thermal conductivities. ...

  16. Skutterudite Thermoelectric Generator For Automotive Waste Heat...

    Broader source: Energy.gov (indexed) [DOE]

    of Exhaust Gas Waste Heat into Usable Electricity Development of Cost-Competitive Advanced Thermoelectric Generators for Direct Conversion of Vehicle Waste Heat into Useful ...

  17. Vehicular Thermoelectrics: The New Green Technology | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    The New Green Technology Vehicular Thermoelectrics: The New Green Technology Presentation given at the 16th Directions in Engine-Efficiency and Emissions Research (DEER) Conference ...

  18. Withdrawal from Production and Distribution of the Radioisotope

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Germanium-68 Used for Calibration Sources | Department of Energy Withdrawal from Production and Distribution of the Radioisotope Germanium-68 Used for Calibration Sources Withdrawal from Production and Distribution of the Radioisotope Germanium-68 Used for Calibration Sources Questions Regarding Federal Register "Notice of Intent to Withdraw from Production and Distribution of the Radioisotope Germanium-68 Used for Calibration Sources" (79 FR 19610, April 9, 2014) Summary of April

  19. New Opportunities for Outer Solar System Science using Radioisotope...

    Office of Scientific and Technical Information (OSTI)

    Sponsoring Org: USDOE Country of Publication: United States Language: English Subject: 33 ... PROPULSION; RADIOISOTOPES; RANGE; SOLAR SYSTEM; SPACE; VEHICLES Astrophysics, Word Cloud ...

  20. New Opportunities for Outer Solar System Science using Radioisotope

    Office of Scientific and Technical Information (OSTI)

    Opportunities for Outer Solar System Science using Radioisotope Electric Propulsion Noble, Robert J.; SLAC; Amini, Rashied; Beauchamp, Patricia M.; Caltech, JPL; Bennett, Gary...

  1. ENHANCED THERMAL VACUUM TEST CAPABILITY FOR RADIOISOTOPE POWER...

    Office of Scientific and Technical Information (OSTI)

    Conference: ENHANCED THERMAL VACUUM TEST CAPABILITY FOR RADIOISOTOPE POWER SYSTEMS AT THE IDAHO NATIONAL LABORATORY BETTER SIMULATES ENVIRONMENTAL CONDITIONS OF SPACE Citation...

  2. Radioisotopes for Medical Diagnostics and Cancer Therapy at BNL...

    Office of Science (SC) Website

    to spin-off field: Development of new radioisotopes for medical diagnosis and cancer therapy. The Brookhaven Linac Isotope Producer (BLIP) runs parasitically off of the Brookhaven ...

  3. Accelerator Radioisotopes Save Lives: Part II Seaborg Institute...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Actinide Research Quarterly Actinide Research Quarterly LANL's Role in the DOE National Isotope Program 1 The Isotope Production Facility at TA-53 6 Radioisotopes for Medical ...

  4. Flexible Medical Radioisotope Production | U.S. DOE Office of...

    Office of Science (SC) Website

    The Science The Brookhaven Linac Isotope Producer (BLIP) provides high energy protons to specialized targets to create radioisotopes with medical utility, either diagnostic or ...

  5. Audit of Funding for Advanced Radioisotope Power Systems, IG...

    Broader source: Energy.gov (indexed) [DOE]

    and Space Administration (NASA), the Department of Defense, and other Federal agencies. ... received proper reimbursement from NASA for the radioisotope power systems produced. ...

  6. Mechanical Response of Thermoelectric Materials

    SciTech Connect (OSTI)

    Wereszczak, Andrew A.; Case, Eldon D.

    2015-05-01

    A sufficient mechanical response of thermoelectric materials (TEMats) to structural loadings is a prerequisite to the exploitation of any candidate TEMat's thermoelectric efficiency. If a TEMat is mechanically damaged or cracks from service-induced stresses, then its thermal and electrical functions can be compromised or even cease. Semiconductor TEMats tend to be quite brittle and have a high coefficient of thermal expansion; therefore, they can be quite susceptible to mechanical failure when subjected to operational thermal gradients. Because of this, sufficient mechanical response (vis-a-vis, mechanical properties) of any candidate TEMat must be achieved and sustained in the context of the service-induced stress state to which it is subjected. This report provides an overview of the mechanical responses of state-of-the-art TEMats; discusses the relevant properties that are associated with those responses and their measurement; and describes important, nonequilibrium phenomena that further complicate their use in thermoelectric devices. For reference purposes, the report also includes several appendixes that list published data on elastic properties and strengths of a variety of TEMats.

  7. Overview of Fords Thermoelectric Programs: Waste Heat Recovery...

    Broader source: Energy.gov (indexed) [DOE]

    Overview of Fords Thermoelectric Programs: Waste Heat Recovery and Climate Control Thermoelectric HVAC for Light-Duty Vehicle Applications Automotive Thermoelectric Generators ...

  8. Develop Thermoelectric Technology for Automotive Waste Heat Recovery

    Office of Energy Efficiency and Renewable Energy (EERE)

    Develop thermoelectric technology for waste heat recovery with a 10% fuel economy improvement without increasing emissions.

  9. Innovative Nano-structuring Routes for Novel Thermoelectric

    Broader source: Energy.gov (indexed) [DOE]

    Materials;Phonon Blocking & DOS Engineering | Department of Energy Presents new concepts for high performance nanostructured bulk thermoelectric materials lee.pdf (1.98 MB) More Documents & Publications Thermoelectric Materials for Automotive Applications The Bottom-Up Approach forThermoelectric Nanocomposites, plusƒ Glass-like thermal conductivity in high efficiency thermoelectric materials

  10. Overview of Thermoelectric Power Generation Technologies in Japan |

    Broader source: Energy.gov (indexed) [DOE]

    Department of Energy Discusses thermoelectric power generation technologies as applied to waste heat recovery, renewable thermal energy sources, and energy harvesting kajikawa.pdf (4.47 MB) More Documents & Publications Overview of Thermoelectric Power Generation Technologies in Japan Overview of Progress in Thermoelectric Power Generation Technologies in Japan Overview of Japanese Activities in Thermoelectrics

  11. Nano-structures Thermoelectric Materals - Part 1 | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    1 Nano-structures Thermoelectric Materals - Part 1 2002 DEER Conference Presentation: RTI International 2002_deer_venkatasubramanian1.pdf (1.13 MB) More Documents & Publications Nano-structures Thermoelectric Materals - Part 2 Recent Device Developments with Advanced Bulk Thermoelectric Materials at RTI Thermoelectric Developments for Vehicular Applications

  12. Thermoelectric Opportunities for Light-Duty Vehicles | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    thermoelectrics for automotive applications and role of automakers in setting guidelines and technology attributes needed for the global product, regulatory, and market environment maranville.pdf (3 MB) More Documents & Publications Skutterudite Thermoelectric Generator For Automotive Waste Heat Recovery Thermoelectric Activities of European Community within Framework Programme 7 and additional activities in Germany Automotive Thermoelectric Generator

  13. Heat reflecting tape for thermoelectric converter

    DOE Patents [OSTI]

    Purdy, David L.

    1977-01-01

    Threads are interlaced with thermoelectric wires to provide a woven cloth in tape form, there being an intermediate layer of heat radiation reflecting material (e.g., aluminum foil) insulated electrically from said wires, which are of opposite thermoelectric polarity and connected as a plurality of thermocouples.

  14. Nanostructures having high performance thermoelectric properties

    DOE Patents [OSTI]

    Yang, Peidong; Majumdar, Arunava; Hochbaum, Allon I.; Chen, Renkun; Delgado, Raul Diaz

    2015-12-22

    The invention provides for a nanostructure, or an array of such nanostructures, each comprising a rough surface, and a doped or undoped semiconductor. The nanostructure is an one-dimensional (1-D) nanostructure, such a nanowire, or a two-dimensional (2-D) nanostructure. The nanostructure can be placed between two electrodes and used for thermoelectric power generation or thermoelectric cooling.

  15. Thermoelectric Development at Hi-Z Technology

    SciTech Connect (OSTI)

    Kushch, Aleksandr S.; Bass, John C.; Ghamaty, Saeid; Elsner, Norbert B.; Bergstrand, Richard A.; Furrow, David; Melvin, Mike

    2002-08-25

    An improved Thermoelectric Generator (TEG) for the Heavy Duty Class Eight Diesel Trucks is under development at Hi-Z Technology. The current TEG is equipped with the improved HZ-14 Thermoelectric module, which features better mechanical properties as well as higher electric power output. Also, the modules are held in place more securely.

  16. Nanostructures having high performance thermoelectric properties

    SciTech Connect (OSTI)

    Yang, Peidong; Majumdar, Arunava; Hochbaum, Allon I; Chen, Renkun; Delgado, Raul Diaz

    2014-05-20

    The invention provides for a nanostructure, or an array of such nanostructures, each comprising a rough surface, and a doped or undoped semiconductor. The nanostructure is an one-dimensional (1-D) nanostructure, such a nanowire, or a two-dimensional (2-D) nanostructure. The nanostructure can be placed between two electrodes and used for thermoelectric power generation or thermoelectric cooling.

  17. Actinium radioisotope products of enhanced purity

    DOE Patents [OSTI]

    Meikrantz, David Herbert; Todd, Terry Allen; Tranter, Troy Joseph; Horwitz, E. Philip

    2010-06-15

    A product includes actinium-225 (.sup.225Ac) and less than about 1 microgram (.mu.g) of iron (Fe) per millicurie (mCi) of actinium-225. The product may have a radioisotopic purity of greater than about 99.99 atomic percent (at %) actinium-225 and daughter isotopes of actinium-225, and may be formed by a method that includes providing a radioisotope mixture solution comprising at least one of uranium-233 (.sup.233U) and thorium-229 (.sup.229Th), extracting the at least one of uranium-233 and thorium-229 into an organic phase, substantially continuously contacting the organic phase with an aqueous phase, substantially continuously extracting actinium-225 into the aqueous phase, and purifying the actinium-225 from the aqueous phase. In some embodiments, the product may include less than about 1 nanogram (ng) of iron per millicurie (mCi) of actinium-225, and may include less than about 1 microgram (.mu.g) each of magnesium (Mg), Chromium (Cr), and manganese (Mn) per millicurie (mCi) of actinium-225.

  18. Preparing for Harvesting Radioisotopes from FRIB

    SciTech Connect (OSTI)

    Peaslee, Graham F.; Lapi, Suzanne E.

    2015-02-02

    The Facility for Rare Isotope Beams (FRIB) is the next generation accelerator facility under construction at Michigan State University. FRIB will produce a wide variety of rare isotopes by a process called projectile fragmentation for a broad range of new experiments when it comes online in 2020. The accelerated rare isotope beams produced in this facility will be more intense than any current facility in the world - in many cases by more than 1000-fold. These beams will be available to the primary users of FRIB in order to do exciting new fundamental research with accelerated heavy ions. In the standard mode of operation, this will mean one radioisotope will be selected at a time for the user. However, the projectile fragmentation process also yields hundreds of other radioisotopes at these bombarding energies, and many of these rare isotopes are long-lived and could have practical applications in medicine, national security or the environment. This project developed new methods to collect these long-lived rare isotopes that are by-products of the standard FRIB operation. These isotopes are important to many areas of research, thus this project will have a broad impact in several scientific areas including medicine, environment and homeland security.

  19. Thermoelectric generator having a resiliently mounted removable thermoelectric module

    DOE Patents [OSTI]

    Purdy, David L.; Shapiro, Zalman M.; Hursen, Thomas F.; Maurer, Gerould W.

    1976-11-02

    An electrical generator having an Isotopic Heat Capsule including radioactive fuel rod 21 as a primary heat source and Thermoelectric Modules 41 and 43 as converters. The Biological Shield for the Capsule is suspended from Spiders at each end each consisting of pretensioned rods 237 and 239 defining planes at right angles to each other. The Modules are mounted in cups 171 of transition members 173 of a heat rejection Fin Assembly whose fins 195 and 197 extend from both sides of the transition member 173 for effective cooling.

  20. Tuning the thermoelectric power factor in carbon nanotube films

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    . Tuning the thermoelectric power factor in carbon nanotube films Ben Zhou 1 , Azure Avery 2 , Andrew Ferguson 2 , Jeff Blackburn 2 Schematic of a thermoelectric device. (wikipedia) Heat Thermoelectric Device Electricity Thermoelectrics Carbon Nanotubes Introduction * Single walled carbon nanotubes (SWCNTs) are promising thermoelectrics because of their good conductivity and one dimensional density of states. Materials and Methods * Ink Preparation: (7,5) nanotubes were dispersed by

  1. Status of the Application of Thermoelectric Technology in Vehicles |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy the Application of Thermoelectric Technology in Vehicles Status of the Application of Thermoelectric Technology in Vehicles 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: BSST LLC 2004_deer_bell.pdf (428.1 KB) More Documents & Publications Role of Thermoelectrics in Vehicle Efficiency Increase Potential Thermoelectric Applications in Diesel Vehicles Potential of Thermoelectrics forOccupant Comfort and Fuel Efficiency Gains in Vehicle

  2. Thermoelectrics and Photovoltaics - Center for Solar and Thermal Energy

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Conversion Thermoelectrics and Photovoltaics Thermoelectrics A significant amount of heat is wasted from industrial processes, home heating and vehicle exhausts that could otherwise be converted to electricity through the use of thermoelectric devices. The interconversion between heat and electricity, through the use of thermoelectrics, is environmentally friendly and highly reliable. With improved efficiency, thermoelectrics could have a significant impact on the energy consumption

  3. In the OSTI Collections: Department of Energy R&D for the Mars Science

    Office of Scientific and Technical Information (OSTI)

    Laboratory | OSTI, US Dept of Energy Office of Scientific and Technical Information In the OSTI Collections: Department of Energy R&D for the Mars Science Laboratory Some key technology for the Mars Science Laboratory "Curiosity" was developed by U. S. Department of Energy laboratories-especially the Multi-Mission Radioisotope Thermoelectric Generator ("MMRTG") that keeps Curiosity functioning on Mars, and the Chemistry Camera ("ChemCam") designed to

  4. OSTI, US Dept of Energy Office of Scientific and Technical Information |

    Office of Scientific and Technical Information (OSTI)

    Speeding access to science information from DOE and Beyond Powering Curiosity; Exploring New Horizons - DOE's MMRTG by Mary Schorn on Thu, August 09, 2012 4274 RTG.png Powering Curiosity; Exploring New Horizons - DOE's MMRTG Read more about 4274 DOE's RTG is doing it again. The Department's Multi-Mission Radioisotope Thermoelectric Generator (MMRTG) is providing continuous power to the Mars rover Curiosity. This radioactive power source is "essentially a nuclear battery that will

  5. Evaluation of Storage for Transportation Equipment, Unfueled Convertors, and Fueled Convertors at the INL for the Radioisotope Power Systems Program

    SciTech Connect (OSTI)

    S. G. Johnson; K. L. Lively

    2010-05-01

    This report contains an evaluation of the storage conditions required for several key components and/or systems of the Radioisotope Power Systems (RPS) Program at the Idaho National Laboratory (INL). These components/systems (transportation equipment, i.e., type ‘B’ shipping casks and the radioisotope thermo-electric generator transportation systems (RTGTS), the unfueled convertors, i.e., multi-hundred watt (MHW) and general purpose heat source (GPHS) RTGs, and fueled convertors of several types) are currently stored in several facilities at the Materials and Fuels Complex (MFC) site. For various reasons related to competing missions, inherent growth of the RPS mission at the INL and enhanced efficiency, it is necessary to evaluate their current storage situation and recommend the approach that should be pursued going forward for storage of these vital RPS components and systems. The reasons that drive this evaluation include, but are not limited to the following: 1) conflict with other missions at the INL of higher priority, 2) increasing demands from the INL RPS Program that exceed the physical capacity of the current storage areas and 3) the ability to enhance our current capability to care for our equipment, decrease maintenance costs and increase the readiness posture of the systems.

  6. Energy Recovery Linacs for Commercial Radioisotope Production

    SciTech Connect (OSTI)

    Sy, Amy; Krafft, Geoffrey A.; Johnson, Rolland; Roberts, Tom; Boulware, Chase; Hollister, Jerry

    2015-09-01

    Photonuclear reactions with bremsstrahlung photon beams from electron linacs can generate radioisotopes of critical interest. An SRF Energy Recovery Linac (ERL) provides a path to a more diverse and reliable domestic supply of short-lived, high-value, high-demand isotopes in a more compact footprint and at a lower cost than those produced by conventional reactor or ion accelerator methods. Use of an ERL enables increased energy efficiency of the complex through energy recovery of the waste electron beam, high electron currents for high production yields, and reduced neutron production and shielding activation at beam dump components. Simulation studies using G4Beamline/GEANT4 and MCNP6 through MuSim, as well as other simulation codes, will design an ERL-based isotope production facility utilizing bremsstrahlung photon beams from an electron linac. Balancing the isotope production parameters versus energy recovery requirements will inform a choice of isotope production target for future experiments.

  7. Silicon-Based Thermoelectrics: Harvesting Low Quality Heat Using Economically Printed Flexible Nanostructured Stacked Thermoelectric Junctions

    SciTech Connect (OSTI)

    2010-03-01

    Broad Funding Opportunity Announcement Project: UIUC is experimenting with silicon-based materials to develop flexible thermoelectric devices—which convert heat into energy—that can be mass-produced at low cost. A thermoelectric device, which resembles a computer chip, creates electricity when a different temperature is applied to each of its sides. Existing commercial thermoelectric devices contain the element tellurium, which limits production levels because tellurium has become increasingly rare. UIUC is replacing this material with microscopic silicon wires that are considerably cheaper and could be equally effective. Improvements in thermoelectric device production could return enough wasted heat to add up to 23% to our current annual electricity production.

  8. Bulk dimensional nanocomposites for thermoelectric applications

    DOE Patents [OSTI]

    Nolas, George S

    2014-06-24

    Thermoelectric elements may be used for heat sensors, heat pumps, and thermoelectric generators. A quantum-dot or nano-scale grain size polycrystalline material the effects of size-quantization are present inside the nanocrystals. A thermoelectric element composed of densified Groups IV-VI material, such as calcogenide-based materials are doped with metal or chalcogenide to form interference barriers form along grains. The dopant used is either silver or sodium. These chalcogenide materials form nanoparticles of highly crystal grains, and may specifically be between 1- and 100 nm. The compound is densified by spark plasma sintering.

  9. Thermoelectric Generator (TEG) Fuel Displacement Potential using

    Broader source: Energy.gov (indexed) [DOE]

    Energy Presentation given at DEER 2006, August 20-24, 2006, Detroit, Michigan. Sponsored by the U.S. DOE's EERE FreedomCar and Fuel Partnership and 21st Century Truck Programs. 2006_deer_fairbanks.pdf (7.06 MB) More Documents & Publications High-Efficiency Quantum-Well Thermoelectrics for Waste Heat Power Generation Quantum Well Thermoelectrics and Waste Heat Recovery High Temperature Thermoelectric Materials Engine-in-the-Loop and Simulation | Department of Energy

    Assessment of

  10. In-line thermoelectric module

    DOE Patents [OSTI]

    Pento, Robert; Marks, James E.; Staffanson, Clifford D.

    2000-01-01

    A thermoelectric module with a plurality of electricity generating units each having a first end and a second end, the units being arranged first end to second end along an in-line axis. Each unit includes first and second elements each made of a thermoelectric material, an electrically conductive hot member arranged to heat one side of the first element, and an electrically conductive cold member arranged to cool another side of the first element and to cool one side of the second element. The hot member, the first element, the cold member and the second element are supported in a fixture, are electrically connected respectively to provide an electricity generating unit, and are arranged respectively in positions along the in-line axis. The individual components of each generating unit and the respective generating units are clamped in their in-line positions by a loading bolt at one end of the fixture and a stop wall at the other end of the fixture. The hot members may have a T-shape and the cold members an hourglass shape to facilitate heat transfer. The direction of heat transfer through the hot members may be perpendicular to the direction of heat transfer through the cold members, and both of these heat transfer directions may be perpendicular to the direction of current flow through the module.