Sample records for thermal storage systems

  1. Model NOx storage systems: Storage capacity and thermal aging...

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

    Model NOx storage systems: Storage capacity and thermal aging of BaOtheta- Al2O3NiAl(100). Model NOx storage systems: Storage capacity and thermal aging of BaOtheta- Al2O3...

  2. Systems analysis of thermal storage

    SciTech Connect (OSTI)

    Copeland, R.J.

    1981-08-01T23:59:59.000Z

    During FY 1981, analyses were conducted on thermal storage concepts for solar thermal applications. These studies include estimates of both the obtainable costs of thermal storage concepts and their worth to a user (i.e., value). Based on obtainable costs and performance, an in-depth study evaluated thermal storage concepts for water/steam, organic fluid, and gas/Brayton solar thermal receivers. Promising and nonpromising concepts were identified. A study to evaluate thermal storage concepts for a liquid metal receiver was initiated. The value of thermal storage in a solar thermal industrial process heat application was analyzed. Several advanced concepts are being studied, including ground-mounted thermal storage for parabolic dishes with Stirling engines.

  3. Thermal Storage Options for HVAC Systems

    E-Print Network [OSTI]

    Weston, R. F.; Gidwani, B. N.

    THERMAL STORAGE OPTIONS FOR HVAC SYSTEMS B. N. Gidwani, P.E. Roy F. Weston, Inc. West Chester, Pennsylvania ABSTRACT With the ever-increasing cost of electricity and the high demand charges levied by utility compa nies, thermal storage... for cooling is rapidly becom ing a widely recognized method to lower cooling costs. There are three maior types of thermal stor age systems: ? Ice Storage: This utilizes the latent heat of fusion of ice for thermal storage. During off Deak periods...

  4. Systems analysis of thermal storage

    SciTech Connect (OSTI)

    Copeland, R. J.

    1980-08-01T23:59:59.000Z

    During FY80 analyses were conducted on thermal storage concepts for solar thermal applications. These studies include both estimates of the obtainable costs of thermal storage concepts and their worth to a user (i.e., value). Based on obtainable costs and performance, promising thermal storage concepts are being identified. A preliminary screening was completed in FY80 and a more in-depth study was initiated. Value studies are being conducted to establish cost goals. A ranking of storage concepts based on value in solar thermal electric plants was conducted for both diurnal and long duration applications. Ground mounted thermal storage concepts for a parabolic dish/Stirling systtem are also being evaluated.

  5. Thermal Storage with Ice Harvesting Systems

    E-Print Network [OSTI]

    Knebel, D. E.

    1986-01-01T23:59:59.000Z

    Application of Harvesting Ice Storage Systems. Thermal storage systems are becoming widely accepted techniques for utility load management. This paper discusses the principles of ice harvesting equipment and their application to the multi...

  6. Thermal Storage Systems at IBM Facilities

    E-Print Network [OSTI]

    Koch, G.

    1981-01-01T23:59:59.000Z

    In 1979, IBM commissioned its first large scale thermal storage system with a capacity of 2.7 million gallons of chilled water and 1.2 million gallons of reclaimed, low temperature hot water. The stored cooling energy represents approximately 27...

  7. EXERGETIC ANALYSIS OF A STEAM-FLASHING THERMAL STORAGE SYSTEM

    E-Print Network [OSTI]

    Abstract Thermal energy storage is attractive in the design of concentrator solar thermal systems because-scale thermal energy storage via hot compressed liquid water. Such a cycle is potentially interesting becauseEXERGETIC ANALYSIS OF A STEAM-FLASHING THERMAL STORAGE SYSTEM Paul T. O'Brien 1 , and John Pye 2 1

  8. STATE OF CALIFORNIA THERMAL ENERGY STORAGE (TES) SYSTEM ACCEPTANCE

    E-Print Network [OSTI]

    STATE OF CALIFORNIA THERMAL ENERGY STORAGE (TES) SYSTEM ACCEPTANCE CEC-MECH-15A (Revised 07/10) CALIFORNIA ENERGY COMMISSION CERTIFICATE OF ACCEPTANCE MECH-15A NA7.5.14 Thermal Energy Storage (TES) System THERMAL ENERGY STORAGE (TES) SYSTEM ACCEPTANCE CEC-MECH-15A (Revised 07/10) CALIFORNIA ENERGY COMMISSION

  9. Metal Hydride Thermal Storage: Reversible Metal Hydride Thermal Storage for High-Temperature Power Generation Systems

    SciTech Connect (OSTI)

    None

    2011-12-05T23:59:59.000Z

    HEATS Project: PNNL is developing a thermal energy storage system based on a Reversible Metal Hydride Thermochemical (RMHT) system, which uses metal hydride as a heat storage material. Heat storage materials are critical to the energy storage process. In solar thermal storage systems, heat can be stored in these materials during the day and released at night—when the sun is not out—to drive a turbine and produce electricity. In nuclear storage systems, heat can be stored in these materials at night and released to produce electricity during daytime peak-demand hours. PNNL’s metal hydride material can reversibly store heat as hydrogen cycles in and out of the material. In a RHMT system, metal hydrides remain stable in high temperatures (600- 800°C). A high-temperature tank in PNNL’s storage system releases heat as hydrogen is absorbed, and a low-temperature tank stores the heat until it is needed. The low-cost material and simplicity of PNNL’s thermal energy storage system is expected to keep costs down. The system has the potential to significantly increase energy density.

  10. AQUIFER THERMAL ENERGY STORAGE

    E-Print Network [OSTI]

    Tsang, C.-F.

    2011-01-01T23:59:59.000Z

    aquifers for thermal energy storage. Problems outlined abovean Aquifer Used for Hot Water Storage: Digital Simulation ofof Aquifer Systems for Cyclic Storage of Water," of the Fall

  11. Selecting Thermal Storage Systems for Schools

    E-Print Network [OSTI]

    Maxwell, C. L.

    1990-01-01T23:59:59.000Z

    measurement at six equally spaced elevations. Charged by chiller or hydronic vent cycle. B. Hot Water Storage Tank - Concrete lined steel 17,000 gallon with four headers arranged for dual temperature storage. C. Chiller - Variable frequency drive, 196... for Thermal Storage Projects since 1985: KW SCHOOL REDUCTION Kimball E.S. 7 1 Poteet H.S. 210 Phases I & I1 AC New M.S. 18 4 Pirrung E.S. 7 6 Poteet H.S. 14 0 Phase I11 Kimball E.S. 2 0 Phase I1 Black E.S. 3 7 Cannaday E.S. 9 0 Austin E.S. 94 N...

  12. Computational Study on Thermal Properties of HVAC System with Building Structure Thermal Storage

    E-Print Network [OSTI]

    Sato, Y.; Sagara, N.; Ryu, Y.; Maehara, K.; Nagai, T.

    2007-01-01T23:59:59.000Z

    Building structure thermal storage (BSTS) HVAC systems can store heat during nighttime thermal storage operation (nighttime operation hours) by using off-peak electricity and release it in the daytime air-conditioning operation (daytime operation...

  13. Thermal Storage with Conventional Cooling Systems

    E-Print Network [OSTI]

    McGee, E. E.

    1990-01-01T23:59:59.000Z

    demand which results in lower electrical costs. The effectiveness of this 'Thermal Retention System" is determined by its design characteristics, its operational efficiency and comparative system analysis. Today's computer technology has provided...

  14. Pulse thermal energy transport/storage system

    DOE Patents [OSTI]

    Weislogel, Mark M. (23133 Switzer Rd., Brookpark, OH 44142)

    1992-07-07T23:59:59.000Z

    A pulse-thermal pump having a novel fluid flow wherein heat admitted to a closed system raises the pressure in a closed evaporator chamber while another interconnected evaporator chamber remains open. This creates a large pressure differential, and at a predetermined pressure the closed evaporator is opened and the opened evaporator is closed. This difference in pressure initiates fluid flow in the system.

  15. Optimization of Ice Thermal Storage Systems Design for HVAC Systems

    E-Print Network [OSTI]

    Nassif, N.; Hall, C.; Freelnad, D.

    2013-01-01T23:59:59.000Z

    Ice thermal storage is promising technology to reduce energy costs by shifting the cooling cost from on-peak to off-peak periods. The paper discusses the optimal design of ice thermal storage and its impact on energy consumption, demand, and total...

  16. Continuous Commissioning(SM) of a Thermal Storage System

    E-Print Network [OSTI]

    Turner, W. D.; Liu, M.

    2001-01-01T23:59:59.000Z

    be costly, which can result in turning on chillers during on-peak hours in order to provide cooling to the buildings. In this paper the optimization of a thermal storage system operation through Continuous CommissioningSM is presented. Detailed building...

  17. AQUIFER THERMAL ENERGY STORAGE

    E-Print Network [OSTI]

    Tsang, C.-F.

    2011-01-01T23:59:59.000Z

    aquifers for thermal energy storage. Problems outlined aboveModeling of Thermal Energy Storage in Aquifers," Proceed-ings of Aquifer Thermal Energy Storage Workshop, Lawrence

  18. AQUIFER THERMAL ENERGY STORAGE

    E-Print Network [OSTI]

    Tsang, C.-F.

    2011-01-01T23:59:59.000Z

    using aquifers for thermal energy storage. Problems outlinedmatical Modeling of Thermal Energy Storage in Aquifers,"ings of Aquifer Thermal Energy Storage Workshop, Lawrence

  19. AQUIFER THERMAL ENERGY STORAGE

    E-Print Network [OSTI]

    Tsang, C.-F.

    2011-01-01T23:59:59.000Z

    using aquifers for thermal energy storage. Problems outlinedmatical Modeling of Thermal Energy Storage in Aquifers,"Proceed- ings of Aquifer Thermal Energy Storage Workshop,

  20. Rehabilitating A Thermal Storage System Through Commissioning

    E-Print Network [OSTI]

    Liu, M.; Veteto, B.; Claridge, D. E.

    1998-01-01T23:59:59.000Z

    systems. The design air flow rate is 40,300 cfm (1.67 cfin/ft2) with 8,800 cfin (0.37 cfin/ft2) outside air. The installed coil capacity is 130 tons for the 13 AHUs excluding the FCUs. The summary of design air-handler information is listed in Table... handlers has direct return. The FCUs in the patient rooms have three-way valves while the roof top units have two-way valves. Table 1: Summary of Design Characteristics of the AHtJs * Outside air unit for the patient rooms. Figure 2a presents a...

  1. Thermal analysis of the failed equipment storage vault system

    SciTech Connect (OSTI)

    Jerrell, J.; Lee, S.Y.; Shadday, A.

    1995-07-01T23:59:59.000Z

    A storage facility for failed glass melters is required for radioactive operation of the Defense Waste Processing Facility (DWPF). It is currently proposed that the failed melters be stored in the Failed Equipment Storage Vaults (FESV`s) in S area. The FESV`s are underground reinforced concrete structures constructed in pairs, with adjacent vaults sharing a common wall. A failed melter is to be placed in a steel Melter Storage Box (MSB), sealed, and lowered into the vault. A concrete lid is then placed over the top of the FESV. Two melters will be placed within the FESV/MSB system, separated by the common wall. There is no forced ventilation within the vault so that the melter is passively cooled. Temperature profiles in the Failed Equipment Storage Vault Structures have been generated using the FLOW3D software to model heat conduction and convection within the FESV/MSB system. Due to complexities in modeling radiation with FLOW3D, P/THERMAL software has been used to model radiation using the conduction/convection temperature results from FLOW3D. The final conjugate model includes heat transfer by conduction, convection, and radiation to predict steady-state temperatures. Also, the FLOW3D software has been validated as required by the technical task request.

  2. Solar-thermal-energy collection/storage-pond system

    DOE Patents [OSTI]

    Blahnik, D.E.

    1982-03-25T23:59:59.000Z

    A solar thermal energy collection and storage system is disclosed. Water is contained, and the water surface is exposed directly to the sun. The central part of an impermeable membrane is positioned below the water's surface and above its bottom with a first side of the membrane pointing generally upward in its central portion. The perimeter part of the membrane is placed to create a watertight boundary separating the water into a first volume which is directly exposable to the sun and which touches the membranes first side, and a second volumn which touches the membranes second side. A salt is dissolved in the first water volume.

  3. Evaluation of diurnal thermal energy storage combined with cogeneration systems

    SciTech Connect (OSTI)

    Somasundaram, S.; Brown, D.R.; Drost, M.K.

    1992-11-01T23:59:59.000Z

    This report describes the results of an evaluation of thermal energy storage (TES) integrated with simple gas turbine cogeneration systems. The TES system captures and stores thermal energy from the gas turbine exhaust for immediate or future generation of process heat. Integrating thermal energy storage with conventional cogeneration equipment increases the initial cost of the combined system; but, by decoupling electric power and process heat production, the system offers the following two significant advantages: (1) Electric power can be generated on demand, irrespective of the process heat load profile, thus increasing the value of the power produced; (2) Although supplementary firing could be used to serve independently varying electric and process heat loads, this approach is inefficient. Integrating TES with cogeneration can serve the two independent loads while firing all fuel in the gas turbine. The study evaluated the cost of power produced by cogeneration and cogeneration/TES systems designed to serve a fixed process steam load. The value of the process steam was set at the levelized cost estimated for the steam from a conventional stand-alone boiler. Power costs for combustion turbine and combined-cycle power plants were also calculated for comparison. The results indicated that peak power production costs for the cogeneration/TES systems were between 25% and 40% lower than peak power costs estimated for a combustion turbine and between 15% and 35% lower than peak power costs estimated for a combined-cycle plant. The ranges reflect differences in the daily power production schedule and process steam pressure/temperature assumptions for the cases evaluated. Further cost reductions may result from optimization of current cogeneration/TES system designs and improvement in TES technology through future research and development.

  4. Study on Commissioning Process for Control Logic of Thermal Storage System

    E-Print Network [OSTI]

    Shioya, M.; Tsubaki, M.; Nakahara, N.

    2004-01-01T23:59:59.000Z

    thermal storage system in an actual building using the CLT. Introduction In thermal storage systems, as large temperature difference between the supply water and the return water as possible should be maintained in order to ensure high system..., at the secondary water circuit of a heat exchanger installed between the thermal storage system and secondary HVAC system of an actual building. One of the authors, Nakahara, acted as Commissioning Authority during construction phase and later as a consultant...

  5. Similarity and generalized analysis of efficiencies of thermal energy storage systems

    SciTech Connect (OSTI)

    Peiwen Li; Jon Van Lew; Cholik Chan; Wafaa Karaki; Jake Stephens; J. E. O'Brien

    2012-03-01T23:59:59.000Z

    This paper examined the features of three typical thermal storage systems including: (1) direct storage of heat transfer fluid in containers, (2) storage of thermal energy in a packed bed of solid filler material, with energy being carried in/out by a flowing heat transfer fluid which directly contacts the packed bed, and (3) a system in which heat transfer fluid flows through tubes that are imbedded into a thermal storage material which may be solid, liquid, or a mixture of the two. The similarity of the three types of thermal storage systems was discussed, and generalized energy storage governing equations were introduced in both dimensional and dimensionless forms. The temperatures of the heat transfer fluid during energy charge and discharge processes and the overall energy storage efficiencies were studied through solution of the energy storage governing equations. Finally, provided in the paper are a series of generalized charts bearing curves for energy storage effectiveness against four dimensionless parameters grouped up from many of the thermal storage system properties including dimensions, fluid and thermal storage material properties, as well as the operational conditions including mass flow rate of the fluid, and the ratio of energy charge and discharge time periods. Engineers can conveniently look up the charts to design and calibrate the size of thermal storage tanks and operational conditions without doing complicated individual modeling and computations. It is expected that the charts will serve as standard tools for thermal storage system design and calibration.

  6. Software-as-a-Service Optimised Scheduling of a Solar-Assisted HVAC System with Thermal Storage

    E-Print Network [OSTI]

    Mammoli, Andrea

    2014-01-01T23:59:59.000Z

    solar-thermal- assisted hvac system. Energy and Buildings, [of a Solar-Assisted HVAC System with Thermal Storage A.of a solar-assisted HVAC system with thermal storage. Energy

  7. Seasonal thermal energy storage

    SciTech Connect (OSTI)

    Allen, R.D.; Kannberg, L.D.; Raymond, J.R.

    1984-05-01T23:59:59.000Z

    This report describes the following: (1) the US Department of Energy Seasonal Thermal Energy Storage Program, (2) aquifer thermal energy storage technology, (3) alternative STES technology, (4) foreign studies in seasonal thermal energy storage, and (5) economic assessment.

  8. Modeling of Thermal Storage Systems in MILP Distributed Energy Resource Models

    E-Print Network [OSTI]

    Steen, David

    2014-01-01T23:59:59.000Z

    potential materials for thermal energy storage in buildingcoupled with thermal energy storage," Applied Energy, vol.N. Fumo, "Benefits of thermal energy storage option combined

  9. Modeling of Thermal Storage Systems in MILP Distributed Energy Resource Models

    E-Print Network [OSTI]

    Steen, David

    2014-01-01T23:59:59.000Z

    potential materials for thermal energy storage in buildingcogeneration coupled with thermal energy storage," AppliedN. Fumo, "Benefits of thermal energy storage option combined

  10. Optimal Control of Harvesting Ice Thermal Storage Systems

    E-Print Network [OSTI]

    Knebel, D. E.

    1988-01-01T23:59:59.000Z

    for optimal control of a harvesting ice storage system. A simplified procedure is used to develop 24 hour load data. Example installations will be shown....

  11. Descriptive analysis of aquifer thermal energy storage systems

    SciTech Connect (OSTI)

    Reilly, R.W.

    1980-06-01T23:59:59.000Z

    The technical and economic feasibility of large-scale aquifer thermal energy storage (ATES) was examined. A key to ATESs attractiveness is its simplicity of design and construction. The storage device consists of two ordinary water wells drilled into an aquifer, connected at the surface by piping and a heat exchanger. During the storage cycle water is pumped out of the aquifer, through the heat exchanger to absorb thermal energy, and then back down into the aquifer through the second well. The thermal storage remains in the aquifer storage bubble until required for use, when it is recovered by reversing the storage operation. For many applications the installation can probably be designed and constructed using existing site-specific information and modern well-drilling techniques. The potential for cost-effective implementation of ATES was investigated in the Twin Cities District Heating-Cogeneration Study in Minnesota. In the study, ATES demonstrated a net energy saving of 32% over the nonstorage scenario, with an annual energy cost saving of $31 million. Discounting these savings over the life of the project, the authors found that the break-even capital cost for ATES construction was $76/kW thermal, far above the estimated ATES development cost of $23 to 50/kW thermal. It appears tht ATES can be highly cost effective as well as achieve substantial fuel savings. ATES would be environmentally beneficial and could be used in many parts of the USA. The existing body of information on ATES indicates that it is a cost-effective, fuel-conserving technique for providing thermal energy for residential, commercial, and industrial users. The negative aspects are minor and highly site-specific, and do not seem to pose a threat to widespread commercialization. With a suitable institutional framework, ATES promises to supply a substantial portion of the nation's future energy needs. (LCL)

  12. Research and Development for Novel Thermal Energy Storage Systems (TES) for Concentrating Solar Power (CSP)

    SciTech Connect (OSTI)

    Faghri, Amir; Bergman, Theodore L; Pitchumani, Ranga

    2013-09-26T23:59:59.000Z

    The overall objective was to develop innovative heat transfer devices and methodologies for novel thermal energy storage systems for concentrating solar power generation involving phase change materials (PCMs). Specific objectives included embedding thermosyphons and/or heat pipes (TS/HPs) within appropriate phase change materials to significantly reduce thermal resistances within the thermal energy storage system of a large-scale concentrating solar power plant and, in turn, improve performance of the plant. Experimental, system level and detailed comprehensive modeling approaches were taken to investigate the effect of adding TS/HPs on the performance of latent heat thermal energy storage (LHTES) systems.

  13. Thermal storage module for solar dynamic receivers

    DOE Patents [OSTI]

    Beatty, Ronald L. (Farragut, TN); Lauf, Robert J. (Oak Ridge, TN)

    1991-01-01T23:59:59.000Z

    A thermal energy storage system comprising a germanium phase change material and a graphite container.

  14. Thermal Attacks on Storage Systems Nathanael Paul Sudhanva Gurumurthi David Evans

    E-Print Network [OSTI]

    Gurumurthi, Sudhanva

    temperature, known as the thermal envelope. Exceeding the thermal envelope decreases the drive's reliability relationship between disk RPM and viscous heating. If the drive exceeds the thermal envelope, the drive canThermal Attacks on Storage Systems Nathanael Paul Sudhanva Gurumurthi David Evans University

  15. A Novel Integrated Frozen Soil Thermal Energy Storage and Ground-Source Heat Pump System

    E-Print Network [OSTI]

    Jiang, Y.; Yao, Y.; Rong, L.; Ma, Z.

    2006-01-01T23:59:59.000Z

    In this paper, a novel integrated frozen soil thermal energy storage and ground-source heat pump (IFSTS&GSHP) system in which the GHE can act as both cold thermal energy storage device and heat exchanger for GSHP is first presented. The IFSTS...

  16. A Novel Integrated Frozen Soil Thermal Energy Storage and Ground-Source Heat Pump System 

    E-Print Network [OSTI]

    Jiang, Y.; Yao, Y.; Rong, L.; Ma, Z.

    2006-01-01T23:59:59.000Z

    In this paper, a novel integrated frozen soil thermal energy storage and ground-source heat pump (IFSTS&GSHP) system in which the GHE can act as both cold thermal energy storage device and heat exchanger for GSHP is first presented. The IFSTS...

  17. HEATS: Thermal Energy Storage

    SciTech Connect (OSTI)

    None

    2012-01-01T23:59:59.000Z

    HEATS Project: The 15 projects that make up ARPA-E’s HEATS program, short for “High Energy Advanced Thermal Storage,” seek to develop revolutionary, cost-effective ways to store thermal energy. HEATS focuses on 3 specific areas: 1) developing high-temperature solar thermal energy storage capable of cost-effectively delivering electricity around the clock and thermal energy storage for nuclear power plants capable of cost-effectively meeting peak demand, 2) creating synthetic fuel efficiently from sunlight by converting sunlight into heat, and 3) using thermal energy storage to improve the driving range of electric vehicles (EVs) and also enable thermal management of internal combustion engine vehicles.

  18. Energy Comparison Between Conventional and Chilled Water Thermal Storage Air Conditioning Systems

    E-Print Network [OSTI]

    Sebzali, M.; Hussain, H. J.; Ameer, B.

    2010-01-01T23:59:59.000Z

    , encouraged by government subsidies and driven by the rapid and continual expansion in building construction, urban development, and the heavy reliance on Air Conditioning (AC) systems for the cooling of buildings. The Chilled Water Thermal Storage (CWTS...

  19. Optimal operation and design of solar-thermal energy storage systems

    E-Print Network [OSTI]

    Lizarraga-García, Enrique

    2012-01-01T23:59:59.000Z

    The present thesis focuses on the optimal operation and design of solar-thermal energy storage systems. First, optimization of time-variable operation to maximize revenue through selling and purchasing electricity to/from ...

  20. Hybrid Vapor Compression Adsorption System: Thermal Storage Using Hybrid Vapor Compression Adsorption System

    SciTech Connect (OSTI)

    None

    2012-01-04T23:59:59.000Z

    HEATS Project: UTRC is developing a new climate-control system for EVs that uses a hybrid vapor compression adsorption system with thermal energy storage. The targeted, closed system will use energy during the battery-charging step to recharge the thermal storage, and it will use minimal power to provide cooling or heating to the cabin during a drive cycle. The team will use a unique approach of absorbing a refrigerant on a metal salt, which will create a lightweight, high-energy-density refrigerant. This unique working pair can operate indefinitely as a traditional vapor compression heat pump using electrical energy, if desired. The project will deliver a hot-and-cold battery that provides comfort to the passengers using minimal power, substantially extending the driving range of EVs.

  1. Thermal Energy Storage

    SciTech Connect (OSTI)

    Rutberg, Michael; Hastbacka, Mildred; Cooperman, Alissa; Bouza, Antonio

    2013-06-05T23:59:59.000Z

    The article discusses thermal energy storage technologies. This article addresses benefits of TES at both the building site and the electricity generation source. The energy savings and market potential of thermal energy store are reviewed as well.

  2. Development and Demonstration of an Innovative Thermal Energy Storage System for Baseload Power Generation

    SciTech Connect (OSTI)

    D. Y. Goswami

    2012-09-04T23:59:59.000Z

    The objective of this project is to research and develop a thermal energy storage system (operating range 3000C ���¢�������� 450 0C ) based on encapsulated phase change materials (PCM) that can meet the utility-scale base-load concentrated solar power plant requirements at much lower system costs compared to the existing thermal energy storage (TES) concepts. The major focus of this program is to develop suitable encapsulation methods for existing low-cost phase change materials that would provide a cost effective and reliable solution for thermal energy storage to be integrated in solar thermal power plants. This project proposes a TES system concept that will allow for an increase of the capacity factor of the present CSP technologies to 75% or greater and reduce the cost to less than $20/kWht.

  3. Thermal control system and method for a passive solar storage wall

    DOE Patents [OSTI]

    Ortega, Joseph K. E. (Westminister, CO)

    1984-01-01T23:59:59.000Z

    The invention provides a system and method for controlling the storing and elease of thermal energy from a thermal storage wall wherein said wall is capable of storing thermal energy from insolation of solar radiation. The system and method includes a device such as a plurality of louvers spaced a predetermined distance from the thermal wall for regulating the release of thermal energy from the thermal wall. This regulating device is made from a material which is substantially transparent to the incoming solar radiation so that when it is in any operative position, the thermal storage wall substantially receives all of the impacting solar radiation. The material in the regulating device is further capable of being substantially opaque to thermal energy so that when the device is substantially closed, thermal release of energy from the storage wall is substantially minimized. An adjustment device is interconnected with the regulating mechanism for selectively opening and closing it in order to regulate the release of thermal energy from the wall.

  4. Advanced Thermal Storage System with Novel Molten Salt: December 8, 2011 - April 30, 2013

    SciTech Connect (OSTI)

    Jonemann, M.

    2013-05-01T23:59:59.000Z

    Final technical progress report of Halotechnics Subcontract No. NEU-2-11979-01. Halotechnics has demonstrated an advanced thermal energy storage system with a novel molten salt operating at 700 degrees C. The molten salt and storage system will enable the use of advanced power cycles such as supercritical steam and supercritical carbon dioxide in next generation CSP plants. The salt consists of low cost, earth abundant materials.

  5. AQUIFER THERMAL ENERGY STORAGE-A SURVEY

    E-Print Network [OSTI]

    Tsang, Chin Fu

    2012-01-01T23:59:59.000Z

    solid-fluid heat storage systems in the ground; extractions0 Thermal storage of cold water in ground water aquifers forA. 8 1971, Storage of solar energy in a sandy-gravel ground:

  6. Project Profile: Novel Thermal Energy Storage Systems for Concentratin...

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

    resistance between the location where phase change occurs and the working fluid of the power cycle. Either thermosyphons or heat pipes can: Provide an effective thermal...

  7. Development of encapsulated lithium hydride thermal energy storage for space power systems

    SciTech Connect (OSTI)

    Morris, D.G.; Foote, J.P.; Olszewski, M.

    1987-12-01T23:59:59.000Z

    Inclusion of thermal energy storage in a pulsed space power supply will reduce the mass of the heat rejection system. In this mode, waste heat generated during the brief high-power burst operation is placed in the thermal store; later, the heat in the store is dissipated to space via the radiator over the much longer nonoperational period of the orbit. Thus, the radiator required is of significantly smaller capacity. Scoping analysis indicates that use of lithium hydride as the thermal storage medium results in system mass reduction benefits for burst periods as long as 800 s. A candidate design for the thermal energy storage component utilizes lithium hydride encapsulated in either 304L stainless steel or molybdenum in a packed-bed configuration with a lithium or sodium-potassium (NaK) heat transport fluid. Key issues associated with the system design include phase-change induced stresses in the shell, lithium hydride and shell compatibility, lithium hydride dissociation and hydrogen loss from the system, void presence and movement associated with the melt-freeze process, and heat transfer limitations on obtaining the desired energy storage density. 58 refs., 40 figs., 11 tabs.

  8. Cost Optimal Operation of Thermal Energy Storage System with Real-Time Prices

    E-Print Network [OSTI]

    Cost Optimal Operation of Thermal Energy Storage System with Real-Time Prices Toru Kashima, Member of the result [4]. The same can be said for time varying real-time prices. Real-time energy pricing is not yet such as chillers. Energy resources such as electricity or natural gas are bought from suppliers at certain prices

  9. The Role of Thermal Energy Storage in Industrial Energy Conservation

    E-Print Network [OSTI]

    Duscha, R. A.; Masica, W. J.

    1979-01-01T23:59:59.000Z

    Thermal Energy Storage for Industrial Applications is a major thrust of the Department of Energy's Thermal Energy Storage Program. Utilizing Thermal Energy Storage (TES) with process or reject heat recovery systems has been shown to be extremely...

  10. THERMAL ENERGY STORAGE IN AQUIFERS WORKSHOP

    E-Print Network [OSTI]

    Authors, Various

    2011-01-01T23:59:59.000Z

    Key to Large-Scale Cogeneration?" Public Power, v, 35, no.Thermal Energy Storage for Cogeneration and Solar Systems,"Energy Storage for Cogeneration and Solar Systems, tion from

  11. SENSIBLE HEAT STORAGE FOR A SOLAR THERMAL POWER PLANT

    E-Print Network [OSTI]

    Baldwin, Thomas F.

    2011-01-01T23:59:59.000Z

    HEAT STORAGE FOR A SOLAR THERMAL POWER PLANT Thomas F.CENTRAL RECEIVER SOLAR THERMAL POWER SYSTEM, PHASE progressCorporation, RECEIVER SOLAR THERMAL POWER SYSTEM, PHASE I,

  12. Optimal Deployment of Thermal Energy Storage under Diverse Economic and Climate Conditions

    E-Print Network [OSTI]

    DeForest, Nicolas

    2014-01-01T23:59:59.000Z

    Deployment  of  Thermal  Energy   Storage  under  Diverse  Dincer I. On thermal energy storage systems and applicationsin research on cold thermal energy storage, International

  13. Optimal Deployment of Thermal Energy Storage under Diverse Economic and Climate Conditions

    E-Print Network [OSTI]

    DeForest, Nicolas

    2014-01-01T23:59:59.000Z

    2012. [8] Dincer I. On thermal energy storage systems andin research on cold thermal energy storage, InternationalLF. Overview of thermal energy storage (TES) potential

  14. Second thermal storage applications workshop

    SciTech Connect (OSTI)

    Wyman, C.E.; Larson, R.W.

    1980-06-01T23:59:59.000Z

    On February 7 and 8, 1980, approximately 20 persons representing the management of both the Solar Thermal Power Systems Program (TPS) of the US Department of Energy (DOE) Division of Central Solar Technology (CST) and the Thermal Energy Storage Program (TES) of the DOE Division of Energy Storage Systems (STOR) met in San Antonio, Texas, for the Second Thermal Storage Applications Workshop. The purpose of the workshop was to review the joint Thermal Energy Storage for Solar Thermal Applications (TESSTA) Program between CST and STOR and to discuss important issues in implementing it. The meeting began with summaries of the seven major elements of the joint program (six receiver-related, storage development elements, and one advanced technology element). Then, a brief description along with supporting data was given of several issues related to the recent joint multiyear program plan (MYPP). Following this session, the participants were divided into three smaller groups representing the program elements that mainly supported large power, small power, and advanced technology activities. During the afternoon of the first day, each group prioritized the program elements through program budgets and discussed the issues defined as well as others of concern. On the morning of the second day, representatives of each group presented the group's results to the other participants. Major conclusions arising from the workshop are presented regarding program and budget. (LEW)

  15. Energy efficient HVAC system features thermal storage and heat recovery

    SciTech Connect (OSTI)

    Bard, E.M. (Bard, Rao + Athanas Consulting Engineering Inc., Boston, MA (United States))

    1994-03-01T23:59:59.000Z

    This article describes a HVAC system designed to efficiently condition a medical center. The topics of the article include energy efficient design of the HVAC system, incentive rebate program by the local utility, indoor air quality, innovative design features, operations and maintenance, payback and life cycle cost analysis results, and energy consumption.

  16. Molten Salt-Carbon Nanotube Thermal Energy Storage for Concentrating Solar Power Systems Final Report

    SciTech Connect (OSTI)

    Michael Schuller; Frank Little; Darren Malik; Matt Betts; Qian Shao; Jun Luo; Wan Zhong; Sandhya Shankar; Ashwin Padmanaban

    2012-03-30T23:59:59.000Z

    We demonstrated that adding nanoparticles to a molten salt would increase its utility as a thermal energy storage medium for a concentrating solar power system. Specifically, we demonstrated that we could increase the specific heat of nitrate and carbonate salts containing 1% or less of alumina nanoparticles. We fabricated the composite materials using both evaporative and air drying methods. We tested several thermophysical properties of the composite materials, including the specific heat, thermal conductivity, latent heat, and melting point. We also assessed the stability of the composite material with repeated thermal cycling and the effects of adding the nanoparticles on the corrosion of stainless steel by the composite salt. Our results indicate that stable, repeatable 25-50% improvements in specific heat are possible for these materials. We found that using these composite salts as the thermal energy storage material for a concentrating solar thermal power system can reduce the levelized cost of electricity by 10-20%. We conclude that these materials are worth further development and inclusion in future concentrating solar power systems.

  17. AQUIFER THERMAL ENERGY STORAGE-A SURVEY

    E-Print Network [OSTI]

    Tsang, Chin Fu

    2012-01-01T23:59:59.000Z

    High temperature underground thermal energy storage, inProceedings, Thermal Energy Storage in Aquifers Workshop:underground thermal energy storage, in ATES newsletter:

  18. THERMAL ENERGY STORAGE IN AQUIFERS WORKSHOP

    E-Print Network [OSTI]

    Authors, Various

    2011-01-01T23:59:59.000Z

    Survey of Thermal Energy Storage in Aquifers Coupled withconcept of thermal energy storage in aquifers was suggestedLow Temperature Thermal Energy Storage Program of Oak Ridge

  19. THERMAL ENERGY STORAGE IN AQUIFERS WORKSHOP

    E-Print Network [OSTI]

    Authors, Various

    2011-01-01T23:59:59.000Z

    Survey of Thermal Energy Storage in Aquifers Coupled withAnnual Thermal Energy Storage Contractors' InformationLarge-Scale Thermal Energy Storage for Cogeneration and

  20. AQUIFER THERMAL ENERGY STORAGE-A SURVEY

    E-Print Network [OSTI]

    Tsang, Chin Fu

    2012-01-01T23:59:59.000Z

    1978, High temperature underground thermal energy storage,in Proceedings, Thermal Energy Storage in Aquifers Workshop:High temperature underground thermal energy storage, in ATES

  1. Evaluation of diurnal thermal energy storage combined with cogeneration systems. Phase 2

    SciTech Connect (OSTI)

    Somasundaram, S.; Brown, D.R.; Drost, M.K.

    1993-07-01T23:59:59.000Z

    This report describes the results of a study of thermal energy storage (TES) systems integrated with combined-cycle gas turbine cogeneration systems. Integrating thermal energy storage with conventional cogeneration equipment increases the initial cost of the combined system; but, by decoupling electric power and process heat production, the system offers two significant advantages. First, electric power can be generated on demand, irrespective of the process heat load profile, thus increasing the value of the power produced. Second, although supplementary firing could be used to serve independently varying electric and process heat loads, this approach is inefficient. Integrating TES with cogeneration can serve the two independent loads while firing all fuel in the gas turbine. An earlier study analyzed TES integrated with a simple-cycle cogeneration system. This follow-on study evaluated the cost of power produced by a combined-cycle electric power plant (CC), a combined-cycle cogeneration plant (CC/Cogen), and a combined-cycle cogeneration plant integrated with thermal energy storage (CC/TES/Cogen). Each of these three systems was designed to serve a fixed (24 hr/day) process steam load. The value of producing electricity was set at the levelized cost for a CC plant, while the value of the process steam was for a conventional stand-alone boiler. The results presented here compared the costs for CC/TES/Cogen system with those of the CC and the CC/Cogen plants. They indicate relatively poor economic prospects for integrating TES with a combined-cycle cogeneration power plant for the assumed designs. The major reason is the extremely close approach temperatures at the storage media heaters, which makes the heaters large and therefore expensive.

  2. Article for thermal energy storage

    DOE Patents [OSTI]

    Salyer, Ival O. (Dayton, OH)

    2000-06-27T23:59:59.000Z

    A thermal energy storage composition is provided which is in the form of a gel. The composition includes a phase change material and silica particles, where the phase change material may comprise a linear alkyl hydrocarbon, water/urea, or water. The thermal energy storage composition has a high thermal conductivity, high thermal energy storage, and may be used in a variety of applications such as in thermal shipping containers and gel packs.

  3. Integrated Building Energy Systems Design Considering Storage Technologies

    E-Print Network [OSTI]

    Stadler, Michael

    2009-01-01T23:59:59.000Z

    electric storage, energy efficiency, heat storage, micro-generation systems, photovoltaic, software, solar thermal

  4. A Comparison of Open Versus Closed Systems in Thermal Storage Applications

    E-Print Network [OSTI]

    Salbodkin, A.

    1990-01-01T23:59:59.000Z

    The use of thermal storage, by its very nature, requires a large storage vessel. Depending upon the technology employed, this can vary from as little as 1.6cuft./ton-hour, up to 15cuft./ton-hour. The result can be storage tanks with volumes...

  5. System for thermal energy storage, space heating and cooling and power conversion

    DOE Patents [OSTI]

    Gruen, Dieter M. (Downers Grove, IL); Fields, Paul R. (Chicago, IL)

    1981-04-21T23:59:59.000Z

    An integrated system for storing thermal energy, for space heating and cong and for power conversion is described which utilizes the reversible thermal decomposition characteristics of two hydrides having different decomposition pressures at the same temperature for energy storage and space conditioning and the expansion of high-pressure hydrogen for power conversion. The system consists of a plurality of reaction vessels, at least one containing each of the different hydrides, three loops of circulating heat transfer fluid which can be selectively coupled to the vessels for supplying the heat of decomposition from any appropriate source of thermal energy from the outside ambient environment or from the spaces to be cooled and for removing the heat of reaction to the outside ambient environment or to the spaces to be heated, and a hydrogen loop for directing the flow of hydrogen gas between the vessels. When used for power conversion, at least two vessels contain the same hydride and the hydrogen loop contains an expansion engine. The system is particularly suitable for the utilization of thermal energy supplied by solar collectors and concentrators, but may be used with any source of heat, including a source of low-grade heat.

  6. Ice Thermal Storage Systems for LWR Supplemental Cooling and Peak Power Shifting

    SciTech Connect (OSTI)

    Haihua Zhao; Hongbin Zhang; Phil Sharpe; Blaise Hamanaka; Wei Yan; WoonSeong Jeong

    2010-06-01T23:59:59.000Z

    Availability of enough cooling water has been one of the major issues for the nuclear power plant site selection. Cooling water issues have frequently disrupted the normal operation at some nuclear power plants during heat waves and long draught. The issues become more severe due to the new round of nuclear power expansion and global warming. During hot summer days, cooling water leaving a power plant may become too hot to threaten aquatic life so that environmental regulations may force the plant to reduce power output or even temporarily to be shutdown. For new nuclear power plants to be built at areas without enough cooling water, dry cooling can be used to remove waste heat directly into the atmosphere. However, dry cooling will result in much lower thermal efficiency when the weather is hot. One potential solution for the above mentioned issues is to use ice thermal storage systems (ITS) that reduce cooling water requirements and boost the plant’s thermal efficiency in hot hours. ITS uses cheap off-peak electricity to make ice and uses those ice for supplemental cooling during peak demand time. ITS is suitable for supplemental cooling storage due to its very high energy storage density. ITS also provides a way to shift large amount of electricity from off peak time to peak time. Some gas turbine plants already use ITS to increase thermal efficiency during peak hours in summer. ITSs have also been widely used for building cooling to save energy cost. Among three cooling methods for LWR applications: once-through, wet cooling tower, and dry cooling tower, once-through cooling plants near a large water body like an ocean or a large lake and wet cooling plants can maintain the designed turbine backpressure (or condensation temperature) during 99% of the time; therefore, adding ITS to those plants will not generate large benefits. For once-through cooling plants near a limited water body like a river or a small lake, adding ITS can bring significant economic benefits and avoid forced derating and shutdown during extremely hot weather. For the new plants using dry cooling towers, adding the ice thermal storage systems can effectively reduce the efficiency loss and water consumption during hot weather so that new LWRs could be considered in regions without enough cooling water. \\ This paper presents the feasibility study of using ice thermal storage systems for LWR supplemental cooling and peak power shifting. LWR cooling issues and ITS application status will be reviewed. Two ITS application case studies will be presented and compared with alternative options: one for once-through cooling without enough cooling for short time, and the other with dry cooling. Because capital cost, especially the ice storage structure/building cost, is the major cost for ITS, two different cost estimation models are developed: one based on scaling method, and the other based on a preliminary design using Building Information Modeling (BIM), an emerging technology in Architecture/Engineering/Construction, which enables design options, performance analysis and cost estimating in the early design stage.

  7. AQUIFER THERMAL ENERGY STORAGE

    E-Print Network [OSTI]

    Tsang, C.-F.

    2011-01-01T23:59:59.000Z

    of Discharge Using Ground- Water Storage," Transactions1971. "Storage of Solar Energy in a Sandy-Gravel Ground,"

  8. Analyzing the Effects of Climate and Thermal Configuration on Community Energy Storage Systems (Presentation)

    SciTech Connect (OSTI)

    Neubauer, J.; Pesaran, A.; Coleman, D.; Chen, D.

    2013-10-01T23:59:59.000Z

    Community energy storage (CES) has been proposed to mitigate the high variation in output from renewable sources and reduce peak load on the electrical grid. Thousands of these systems may be distributed around the grid to provide benefits to local distribution circuits and to the grid as a whole when aggregated. CES must be low cost to purchase and install and also largely maintenance free through more than 10 years of service life to be acceptable to most utilities.Achieving the required system life time is a major uncertainty for lithium-ion batteries. The lifetime and immediate system performance of batteries can change drastically with battery temperature, which is a strong function of system packaging, local climate, electrical duty cycle, and other factors. In other Li-ion applications, this problem is solved via air or liquid heating and cooling systems that may need occasional maintenance throughout their service life. CES requires a maintenance-free thermal management system providing protection from environmental conditions while rejecting heat from a moderate electrical duty cycle. Thus, the development of an effective, low-cost, zero-maintenance thermal management system poses a challenge critical to the success of CES. NREL and Southern California Edison have collaborated to evaluate the long-term effectiveness of various CES thermal configurations in multiple climates by building a model of CES based on collected test data, integrating it with an NREL-developed Li-ion degradation model, and applying CES electrical duty cycles and historic location-specific meteorological data to forecast battery thermal response and degradation through a 10-year service life.

  9. Thermal Energy Storage for Electricity Peak-demand Mitigation: A Solution in Developing and Developed World Alike

    E-Print Network [OSTI]

    DeForest, Nicholas

    2014-01-01T23:59:59.000Z

    N ATIONAL L ABORATORY Thermal Energy Storage for Electricity20, 2012. I. Dincer, On thermal energy storage systems andin research on cold thermal energy storage, International

  10. Thermal Energy Storage for Electricity Peak-demand Mitigation: A Solution in Developing and Developed World Alike

    E-Print Network [OSTI]

    DeForest, Nicholas

    2014-01-01T23:59:59.000Z

    20, 2012. I. Dincer, On thermal energy storage systems andin research on cold thermal energy storage, Internationalpp177–189, 2002. [PG&E] Thermal Energy Storage Strategies

  11. THERMAL ENERGY STORAGE IN AQUIFERS WORKSHOP

    E-Print Network [OSTI]

    Authors, Various

    2011-01-01T23:59:59.000Z

    and J. Schwarz, Survey of Thermal Energy Storage in AquifersLow Temperature Thermal Energy Storage Program of Oak RidgeAquifers for Seasonal Thermal Energy Storage: An Overview of

  12. THERMAL ENERGY STORAGE IN AQUIFERS WORKSHOP

    E-Print Network [OSTI]

    Authors, Various

    2011-01-01T23:59:59.000Z

    and J. Schwarz, Survey of Thermal Energy Storage in AquifersB. Quale. Seasonal storage of thermal energy in water in theSecond Annual Thermal Energy Storage Contractors'

  13. Ice Thermal Storage Systems for Nuclear Power Plant Supplemental Cooling and Peak Power Shifting

    SciTech Connect (OSTI)

    Haihua Zhao; Hongbin Zhang; Phil Sharpe; Blaise Hamanaka; Wei Yan; WoonSeong Jeong

    2013-03-01T23:59:59.000Z

    Availability of cooling water has been one of the major issues for the nuclear power plant site selection. Cooling water issues have frequently disrupted the normal operation at some nuclear power plants during heat waves and long draught. One potential solution is to use ice thermal storage (ITS) systems that reduce cooling water requirements and boost the plant’s thermal efficiency in hot hours. ITS uses cheap off-peak electricity to make ice and uses the ice for supplemental cooling during peak demand time. ITS also provides a way to shift a large amount of electricity from off peak time to peak time. For once-through cooling plants near a limited water body, adding ITS can bring significant economic benefits and avoid forced derating and shutdown during extremely hot weather. For the new plants using dry cooling towers, adding the ITS systems can effectively reduce the efficiency loss during hot weather so that new plants could be considered in regions lack of cooling water. This paper will review light water reactor cooling issues and present the feasibility study results.

  14. Analysis and System Design of a Large Chiller Plant for Korea, with or without Thermal Storage

    E-Print Network [OSTI]

    Levin, C.; Simmonds, P.

    1996-01-01T23:59:59.000Z

    % was provided by thermal storage as in the previous scheme. Electric centrifugal chillers, two (2) at 950 tons each, were still required to charge the ice tanks at night, because gas-fired absorption chillers cannot make the 28°F (-2.2"C) glycol solution... simulated. C. Electric Centrifugal Chillers with Thermal Storage: Local code requires that a maximum of 60% of the peak cooling load be satisfied "real-time" by electricity. Therefore, two (2) 1,020-ton electric centrifugal chillers provided 2,040 tons...

  15. Thermal Storage and Advanced Heat Transfer Fluids (Fact Sheet), Thermal Systems Group: CSP Capabilities (TSG)

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron Spin Transition in theTheoretical Study onThermalEnergy Analysis

  16. Hot Thermal Storage/Selective Energy System Reduces Electric Demand for Space Cooling As Well As Heating in Commercial Application

    E-Print Network [OSTI]

    Meckler, G.

    1985-01-01T23:59:59.000Z

    Based on an experimental residential retrofit incorporating thermal storage, and extensive subsequent modeling, a commercial design was developed and implemented to use hot thermal storage to significantly reduce electric demand and utility energy...

  17. Economical Analysis of a Groundwater Source Heat Pump with Water Thermal Storage System 

    E-Print Network [OSTI]

    Zhou, Z.; Xu, W.; Li, J.; Zhao, J.; Niu, L.

    2006-01-01T23:59:59.000Z

    The paper is based on a chilled and heat source for the building which has a total area of 140000m2 in the suburb of Beijing. By comparing the groundwater source heat pump of water thermal storage (GHPWTS) with a conventional chilled and heat source...

  18. Economical Analysis of a Groundwater Source Heat Pump with Water Thermal Storage System

    E-Print Network [OSTI]

    Zhou, Z.; Xu, W.; Li, J.; Zhao, J.; Niu, L.

    2006-01-01T23:59:59.000Z

    The paper is based on a chilled and heat source for the building which has a total area of 140000m2 in the suburb of Beijing. By comparing the groundwater source heat pump of water thermal storage (GHPWTS) with a conventional chilled and heat source...

  19. Lih thermal energy storage device

    DOE Patents [OSTI]

    Olszewski, Mitchell (Knoxville, TN); Morris, David G. (Knoxville, TN)

    1994-01-01T23:59:59.000Z

    A thermal energy storage device for use in a pulsed power supply to store waste heat produced in a high-power burst operation utilizes lithium hydride as the phase change thermal energy storage material. The device includes an outer container encapsulating the lithium hydride and an inner container supporting a hydrogen sorbing sponge material such as activated carbon. The inner container is in communication with the interior of the outer container to receive hydrogen dissociated from the lithium hydride at elevated temperatures.

  20. Cost-Effective Solar Thermal Energy Storage: Thermal Energy Storage With Supercritical Fluids

    SciTech Connect (OSTI)

    None

    2011-02-01T23:59:59.000Z

    Broad Funding Opportunity Announcement Project: UCLA and JPL are creating cost-effective storage systems for solar thermal energy using new materials and designs. A major drawback to the widespread use of solar thermal energy is its inability to cost-effectively supply electric power at night. State-of-the-art energy storage for solar thermal power plants uses molten salt to help store thermal energy. Molten salt systems can be expensive and complex, which is not attractive from a long-term investment standpoint. UCLA and JPL are developing a supercritical fluid-based thermal energy storage system, which would be much less expensive than molten-salt-based systems. The team’s design also uses a smaller, modular, single-tank design that is more reliable and scalable for large-scale storage applications.

  1. The integration of water loop heat pump and building structural thermal storage systems

    SciTech Connect (OSTI)

    Marseille, T.J.; Schliesing, J.S.

    1991-10-01T23:59:59.000Z

    Many commercial buildings need heat in one part and, at the same time, cooling in another part. Even more common is the need for heating during one part of the day and cooling during another in the same spaces. If that energy could be shifted or stored for later use, significant energy might be saved. If a building's heating and cooling subsystems could be integrated with the building's structural mass and used to collect, store, and deliver energy, the energy might be save cost-effectively. To explore this opportunity, researchers at the Pacific Northwest Laboratory (PNL) examined the thermal interactions between the heating, ventilating, and air-conditioning (HVAC) system and the structure of a commercial building. Computer models were developed to simulate the interactions in an existing building located in Seattle, Washington, to determine how these building subsystems could be integrated to improve energy efficiency. The HVAC subsystems in the existing building were modeled. These subsystems consist of decentralized water-source heat pumps (WSHP) in a closed water loop, connected to cooling towers for heat rejection during cooling mode and boilers to augment heating. An initial base case'' computer model of the Seattle building, as-built, was developed. Metered data available for the building were used to calibrate this model to ensure that the analysis would provide information that closely reflected the operation of a real building. The HVAC system and building structure were integrated in the model using the concrete floor slabs as thermal storage media. The slabs may be actively charged during off-peak periods with the chilled water in the loop and then either actively or passively discharged into the conditioned space during peak periods. 21 refs., 37 figs., 17 tabs.

  2. Advanced Thermal Energy Storage: Novel Tuning of Critical Fluctuations for Advanced Thermal Energy Storage

    SciTech Connect (OSTI)

    None

    2011-12-01T23:59:59.000Z

    HEATS Project: NAVITASMAX is developing a novel thermal energy storage solution. This innovative technology is based on simple and complex supercritical fluids— substances where distinct liquid and gas phases do not exist, and tuning the properties of these fluid systems to increase their ability to store more heat. In solar thermal storage systems, heat can be stored in NAVITASMAX’s system during the day and released at night—when the sun is not shining—to drive a turbine and produce electricity. In nuclear storage systems, heat can be stored in NAVITASMAX’s system at night and released to produce electricity during daytime peak-demand hours.

  3. Molten Glass for Thermal Storage: Advanced Molten Glass for Heat Transfer and Thermal Energy Storage

    SciTech Connect (OSTI)

    None

    2012-01-01T23:59:59.000Z

    HEATS Project: Halotechnics is developing a high-temperature thermal energy storage system using a new thermal-storage and heat-transfer material: earth-abundant and low-melting-point molten glass. Heat storage materials are critical to the energy storage process. In solar thermal storage systems, heat can be stored in these materials during the day and released at night—when the sun is not out—to drive a turbine and produce electricity. In nuclear storage systems, heat can be stored in these materials at night and released to produce electricity during daytime peak-demand hours. Halotechnics new thermal storage material targets a price that is potentially cheaper than the molten salt used in most commercial solar thermal storage systems today. It is also extremely stable at temperatures up to 1200°C—hundreds of degrees hotter than the highest temperature molten salt can handle. Being able to function at high temperatures will significantly increase the efficiency of turning heat into electricity. Halotechnics is developing a scalable system to pump, heat, store, and discharge the molten glass. The company is leveraging technology used in the modern glass industry, which has decades of experience handling molten glass.

  4. Technology Potential of Thermal Energy Storage (TES) Systems in Federal Facilities

    SciTech Connect (OSTI)

    Chvala, William D.

    2001-07-31T23:59:59.000Z

    This document presents the findings of a technology market assessment for thermal energy storage (TES) in space cooling applications. The potential impact of TES in Federal facilities is modeled using the Federal building inventory with the appropriate climatic and energy cost data. In addition, this assessment identified acceptance issues and major obstacles through interviews with energy services companies (ESCOs), TES manufacturers, and Federal facility staff.

  5. Evaluation and Optimization of Underground Thermal Energy Storage Systems of Energy Efficient Buildings (WKSP)- A Project within the new German R&D- Framework EnBop

    E-Print Network [OSTI]

    Bockelmann, F.; Kipry, H.; Plesser, S.; Fisch, M. N.

    of these research projects and presents detailed results of project WKSP. The performance of buildings with systems for underground thermal energy storage is analysed in this project. As the analyses show several systems work worse than expected. Within the project...

  6. Storage System and IBM System Storage

    E-Print Network [OSTI]

    IBM® XIV® Storage System and IBM System Storage® SAN Volume Controller deliver high performance and smart management for SAP® landscapes IBM SAP International Competence Center #12;"The combination of the XIV Storage System and SAN Volume Controller gives us a smarter way to manage our storage. If we need

  7. Dish/Stirling High-Performance Thermal Storage

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

    studies Goal: * Demonstrate the feasibility of significant thermal storage for dish Stirling systems to leverage their existing high performance to greater capacity * Demonstrate...

  8. Thermal Energy Storage for Cooling of Commercial Buildings

    E-Print Network [OSTI]

    Akbari, H.

    2010-01-01T23:59:59.000Z

    Building Thermal Energy _Storage in ASEAN Countries,"Company, "Thermal Energy Storage for Cooling," SeminarTHERMAL FOR COOLING ENERGY STORAGE BUILDINGS OF COMMERCIAL

  9. Thermal Energy Storage for Cooling of Commercial Buildings

    E-Print Network [OSTI]

    Akbari, H.

    2010-01-01T23:59:59.000Z

    of Commercial Building Thermal Energy _Storage in ASEANGas Electric Company, "Thermal Energy Storage for Cooling,"LBL--25393 DE91 ,THERMAL ENERGY STORAGE FOR COOLING OF

  10. SENSIBLE HEAT STORAGE FOR A SOLAR THERMAL POWER PLANT

    E-Print Network [OSTI]

    Baldwin, Thomas F.

    2011-01-01T23:59:59.000Z

    ADVANCED THERMAL ENERGY STORAGE CONCEPT DEFINITION STUDY FORSchilling. F. E. , Thermal Energy Storage Using PrestressedNo ~cumulate thermal energy storage. Estimate ESTrof2(

  11. Thermal Energy Storage for Cooling of Commercial Buildings

    E-Print Network [OSTI]

    Akbari, H.

    2010-01-01T23:59:59.000Z

    Building Thermal Energy _Storage in ASEAN Countries,"Company, "Thermal Energy Storage for Cooling," Seminar25393 DE91 ,THERMAL ENERGY STORAGE FOR COOLING OF COMMERCIAL

  12. Thermal Storage Materials Laboratory (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2011-10-01T23:59:59.000Z

    This fact sheet describes the purpose, lab specifications, applications scenarios, and information on how to partner with NREL's Thermal Storage Materials Laboratory at the Energy Systems Integration Facility. The Thermal Storage Materials Laboratory at NREL's Energy Systems Integration Facility (ESIF) investigates materials that can be used as high-temperature heat transfer fluids or thermal energy storage media in concentrating solar power (CSP) plants. Research objectives include the discovery and evaluation of candidate fluids and phase-change materials (PCM) to serve as thermal energy storage media in the temperature range of 300 C to 800 C. Knowledge of thermophysical properties such as melting point, heat of fusion, density, viscosity, thermal stability are essential for understanding how candidate materials could be deployed in CSP plants. The laboratory runs high-temperature instruments for the analysis of thermophysical properties. Small samples of candidate materials are prepared and characterized using differential scanning calorimetry, thermogravimetric analysis, and other specialized analytical methods. Instrumentation capabilities are being expanded to allow for analysis of samples up to 1,200 C. Higher temperature operation is one method to increase the efficiency and lower the cost of CSP systems.

  13. Thermal Storage Commercial Plant Design Study for a 2-Tank Indirect Molten Salt System: Final Report, 13 May 2002 - 31 December 2004

    SciTech Connect (OSTI)

    Kelly, B.; Kearney, D.

    2006-07-01T23:59:59.000Z

    Subcontract report by Nexant, Inc., and Kearney and Associates regarding a study of a solar parabolic trough commercial plant design with 2-tank indirect molten salt thermal storage system.

  14. Chiller Start/Stop Optimization for a Campus-wide Chilled Water System with a Thermal Storage Tank Under a Four-Period Electricity Rate Schedule

    E-Print Network [OSTI]

    Zhou, J.; Wei, G.; Turner, W. D.; Deng, S.; Claridge, D.; Contreras, O.

    2002-01-01T23:59:59.000Z

    The existence of a 1.4-million-gallon chilled water thermal storage tank greatly increases the operational flexibility of a campuswide chilled water system under a four-part electricity rate structure. While significant operational savings can...

  15. Integrated Building Energy Systems Design Considering Storage Technologies

    E-Print Network [OSTI]

    Stadler, Michael

    2009-01-01T23:59:59.000Z

    photovoltaic, software, solar thermal systems Abstract Theinteractions among PV, solar thermal, and storage systemsstorage, PV, as well as solar thermal system adoption, two

  16. Aquifer thermal energy storage: a survey

    SciTech Connect (OSTI)

    Tsang, C.F.; Hopkins, D.; Hellstroem, G.

    1980-01-01T23:59:59.000Z

    The disparity between energy production and demand in many power plants has led to increased research on the long-term, large-scale storage of thermal energy in aquifers. Field experiments have been conducted in Switzerland, France, the United States, Japan, and the People's Republic of China to study various technical aspects of aquifer storage of both hot and cold water. Furthermore, feasibility studies now in progress include technical, economic, and environmental analyses, regional exploration to locate favorable storage sites, and evaluation and design of pilot plants. Several theoretical and modeling studies are also under way. Among the topics being studied using numerical models are fluid and heat flow, dispersion, land subsidence or uplift, the efficiency of different injection/withdrawal schemes, buoyancy tilting, numerical dispersion, the use of compensation wells to counter regional flow, steam injection, and storage in narrow glacial deposits of high permeability. Experiments to date illustrate the need for further research and development to ensure successful implementation of an aquifer storage system. Some of the areas identified for further research include shape and location of the hydrodynamic and thermal fronts, choice of appropriate aquifers, thermal dispersion, possibility of land subsidence or uplift, thermal pollution, water chemistry, wellbore plugging and heat exchange efficiency, and control of corrosion.

  17. Chilled Water Thermal Storage System and Demand Response at the University of California at Merced

    SciTech Connect (OSTI)

    Granderson, Jessica; Dudley, Junqiao Han; Kiliccote, Sila; Piette, Mary Ann

    2009-10-08T23:59:59.000Z

    The University of California at Merced is a unique campus that has benefited from intensive efforts to maximize energy efficiency, and has participated in a demand response program for the past two years. Campus demand response evaluations are often difficult because of the complexities introduced by central heating and cooling, non-coincident and diverse building loads, and existence of a single electrical meter for the entire campus. At the University of California at Merced, a two million gallon chilled water storage system is charged daily during off-peak price periods and used to flatten the load profile during peak demand periods. This makes demand response more subtle and challenges typical evaluation protocols. The goal of this research is to study demand response savings in the presence of storage systems in a campus setting. First, University of California at Merced summer electric loads are characterized; second, its participation in two demand response events is detailed. In each event a set of strategies were pre-programmed into the campus control system to enable semi-automated response. Finally, demand savings results are applied to the utility's DR incentives structure to calculate the financial savings under various DR programs and tariffs. A key conclusion to this research is that there is significant demand reduction using a zone temperature set point change event with the full off peak storage cooling in use.

  18. Microwavable thermal energy storage material

    DOE Patents [OSTI]

    Salyer, Ival O. (Dayton, OH)

    1998-09-08T23:59:59.000Z

    A microwavable thermal energy storage material is provided which includes a mixture of a phase change material and silica, and a carbon black additive in the form of a conformable dry powder of phase change material/silica/carbon black, or solid pellets, films, fibers, moldings or strands of phase change material/high density polyethylene/ethylene-vinyl acetate/silica/carbon black which allows the phase change material to be rapidly heated in a microwave oven. The carbon black additive, which is preferably an electrically conductive carbon black, may be added in low concentrations of from 0.5 to 15% by weight, and may be used to tailor the heating times of the phase change material as desired. The microwavable thermal energy storage material can be used in food serving applications such as tableware items or pizza warmers, and in medical wraps and garments.

  19. Microwavable thermal energy storage material

    DOE Patents [OSTI]

    Salyer, I.O.

    1998-09-08T23:59:59.000Z

    A microwavable thermal energy storage material is provided which includes a mixture of a phase change material and silica, and a carbon black additive in the form of a conformable dry powder of phase change material/silica/carbon black, or solid pellets, films, fibers, moldings or strands of phase change material/high density polyethylene/ethylene vinyl acetate/silica/carbon black which allows the phase change material to be rapidly heated in a microwave oven. The carbon black additive, which is preferably an electrically conductive carbon black, may be added in low concentrations of from 0.5 to 15% by weight, and may be used to tailor the heating times of the phase change material as desired. The microwavable thermal energy storage material can be used in food serving applications such as tableware items or pizza warmers, and in medical wraps and garments. 3 figs.

  20. Gas hydrate cool storage system

    DOE Patents [OSTI]

    Ternes, M.P.; Kedl, R.J.

    1984-09-12T23:59:59.000Z

    The invention presented relates to the development of a process utilizing a gas hydrate as a cool storage medium for alleviating electric load demands during peak usage periods. Several objectives of the invention are mentioned concerning the formation of the gas hydrate as storage material in a thermal energy storage system within a heat pump cycle system. The gas hydrate was formed using a refrigerant in water and an example with R-12 refrigerant is included. (BCS)

  1. Gas storage carbon with enhanced thermal conductivity

    DOE Patents [OSTI]

    Burchell, Timothy D. (Oak Ridge, TN); Rogers, Michael Ray (Knoxville, TN); Judkins, Roddie R. (Knoxville, TN)

    2000-01-01T23:59:59.000Z

    A carbon fiber carbon matrix hybrid adsorbent monolith with enhanced thermal conductivity for storing and releasing gas through adsorption and desorption is disclosed. The heat of adsorption of the gas species being adsorbed is sufficiently large to cause hybrid monolith heating during adsorption and hybrid monolith cooling during desorption which significantly reduces the storage capacity of the hybrid monolith, or efficiency and economics of a gas separation process. The extent of this phenomenon depends, to a large extent, on the thermal conductivity of the adsorbent hybrid monolith. This invention is a hybrid version of a carbon fiber monolith, which offers significant enhancements to thermal conductivity and potential for improved gas separation and storage systems.

  2. Micro/Nano-Scale Phase Change Systems for Thermal Management and Solar Energy Conversion Applications

    E-Print Network [OSTI]

    Coso, Dusan

    2013-01-01T23:59:59.000Z

    for Storage of Solar Thermal Energy,” Solar Energy, 18 (3),Toward Molecular Solar-Thermal Energy Storage,” Angewandtescale molecular solar thermal energy storage system, in

  3. Phase Change Materials for Thermal Energy Storage in Concentrated Solar Thermal Power Plants

    E-Print Network [OSTI]

    Hardin, Corey Lee

    2011-01-01T23:59:59.000Z

    PHASE CHANGE THERMAL ENERGY STORAGE FOR CONCENTRATING SOLARChange Materials for Thermal Energy Storage in ConcentratedChange Materials for Thermal Energy Storage in Concentrated

  4. Efficient Phase-Change Materials: Development of a Low-Cost Thermal Energy Storage System Using Phase-Change Materials with Enhanced Radiation Heat Transfer

    SciTech Connect (OSTI)

    None

    2011-12-05T23:59:59.000Z

    HEATS Project: USF is developing low-cost, high-temperature phase-change materials (PCMs) for use in thermal energy storage systems. Heat storage materials are critical to the energy storage process. In solar thermal storage systems, heat can be stored in these materials during the day and released at night—when the sun is not out—to drive a turbine and produce electricity. In nuclear storage systems, heat can be stored in these materials at night and released to produce electricity during daytime peak-demand hours. Most PCMs do not conduct heat very well. Using an innovative, electroless encapsulation technique, USF is enhancing the heat transfer capability of its PCMs. The inner walls of the capsules will be lined with a corrosion-resistant, high-infrared emissivity coating, and the absorptivity of the PCM will be controlled with the addition of nano-sized particles. USF’s PCMs remain stable at temperatures from 600 to 1,000°C and can be used for solar thermal power storage, nuclear thermal power storage, and other applications.

  5. Eurotherm Seminar #99 Advances in Thermal Energy Storage

    E-Print Network [OSTI]

    Boyer, Edmond

    Eurotherm Seminar #99 Advances in Thermal Energy Storage 1 EUROTHERM99-01-103 Convection Energy Storage 2 Nussel number. This study shows that an increase in the convection coefficient leads in this paper consists in horizontal PCM plates separated by an air flow. This is a storage system dedicated

  6. Solar energy thermalization and storage device

    DOE Patents [OSTI]

    McClelland, John F. (Ames, IA)

    1981-09-01T23:59:59.000Z

    A passive solar thermalization and thermal energy storage assembly which is visually transparent. The assembly consists of two substantial parallel, transparent wall members mounted in a rectangular support frame to form a liquid-tight chamber. A semitransparent thermalization plate is located in the chamber, substantially paralled to and about equidistant from the transparent wall members to thermalize solar radiation which is stored in a transparent thermal energy storage liquid which fills the chamber. A number of the devices, as modules, can be stacked together to construct a visually transparent, thermal storage wall for passive solar-heated buildings.

  7. The integration of water loop heat pump and building structural thermal storage systems

    SciTech Connect (OSTI)

    Marseille, T.J.; Schliesing, J.S.

    1990-09-01T23:59:59.000Z

    Commercial buildings often have extensive periods where one space needs cooling and another heating. Even more common is the need for heating during one part of the day and cooling during another in the same spaces. If a building's heating and cooling system could be integrated with the building's structural mass such that the mass can be used to collect, store, and deliver energy, significant energy might be saved. Computer models were developed to simulate this interaction for an existing office building in Seattle, Washington that has a decentralized water-source heat pump system. Metered data available for the building was used to calibrate a base'' building model (i.e., nonintegrated) prior to simulation of the integrated system. In the simulated integration strategy a secondary water loop was manifolded to the main HVAC hydronic loop. tubing in this loop was embedded in the building's concrete floor slabs. Water was routed to this loop by a controller to charge or discharge thermal energy to and from the slabs. The slabs were also in thermal communication with the conditioned spaces. Parametric studies of the building model, using weather data for five other cities in addition to Seattle, predicted that energy can be saved on cooling dominated days. On hot, dry days and during the night the cooling tower can beneficially be used as a free cooling'' source for thermally charging'' the floor slabs using cooled water. Through the development of an adaptive/predictive control strategy, annual HVAC energy savings as large as 30% appear to be possible in certain climates. 8 refs., 13 figs.

  8. Successfully Marketing Thermal Storage in Commercial Buildings

    E-Print Network [OSTI]

    McDonald, C.

    1988-01-01T23:59:59.000Z

    commercial sector marketing efforts, are synthesized into a set of lessons of experience and guidelines for those who are considering developing a thermal storage marketing effort....

  9. Phase Change Materials for Thermal Energy Storage in Concentrated Solar Thermal Power Plants

    E-Print Network [OSTI]

    Hardin, Corey Lee

    2011-01-01T23:59:59.000Z

    and Background Solar thermal energy collection is anCHANGE THERMAL ENERGY STORAGE FOR CONCENTRATING SOLAR POWERfor Thermal Energy Storage in Concentrated Solar Thermal

  10. Software-as-a-Service Optimised Scheduling of a Solar-Assisted HVAC System with Thermal Storage

    E-Print Network [OSTI]

    Mammoli, Andrea

    2014-01-01T23:59:59.000Z

    performance of a solar-thermal- assisted hvac system. Energyfor rows of fixed solar thermal collectors using flatassisted by a 232 m solar thermal array providing heat to a

  11. Sandia National Laboratories: solar thermal energy storage

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

    energy storage Sandia Solar Energy Test System Cited in National Engineering Competition On May 16, 2013, in Concentrating Solar Power, Energy, Energy Storage, Facilities, National...

  12. Energy Storage Systems

    SciTech Connect (OSTI)

    Conover, David R.

    2013-12-01T23:59:59.000Z

    Energy Storage Systems – An Old Idea Doing New Things with New Technology article for the International Assoication of ELectrical Inspectors

  13. EXPERIMENTAL AND THEORETICAL STUDIES OF THERMAL ENERGY STORAGE IN AQUIFERS

    E-Print Network [OSTI]

    Tsang, Chin Fu

    2011-01-01T23:59:59.000Z

    In Proceed- ings of Thermal Energy Storage in Aquifers Work-Mathematical Modeling of Thermal Energy storage in Aquifers.In Proceed- ings of Thermal Energy Storage in Aquifers Work-

  14. Cool Trends on Campus: A Survey of Thermal Energy Storage Use...

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

    on Campus: A Survey of Thermal Energy Storage Use in Campus District Energy Systems, May 2005 Cool Trends on Campus: A Survey of Thermal Energy Storage Use in Campus District...

  15. Concentrating Solar Program; Session: Thermal Storage - Overview (Presentation)

    SciTech Connect (OSTI)

    Glatzmaier, G.; Mehos, M.; Mancini, T.

    2008-04-01T23:59:59.000Z

    The project overview of this presentation is: (1) description--(a) laboratory R and D in advanced heat transfer fluids (HTF) and thermal storage systems; (b) FOA activities in solar collector and component development for use of molten salt as a heat transfer and storage fluid; (c) applications for all activities include line focus and point focus solar concentrating technologies; (2) Major FY08 Activities--(a) advanced HTF development with novel molten salt compositions with low freezing temperatures, nanofluids molecular modeling and experimental studies, and use with molten salt HTF in solar collector field; (b) thermal storage systems--cost analysis and updates for 2-tank and thermocline storage and model development and analysis to support near-term trought deployment; (c) thermal storage components--facility upgrade to support molten salt component testing for freeze-thaw receiver testing, long-shafted molten salt pump for parabolic trough and power tower thermal storage systems; (d) CSP FOA support--testing and evaluation support for molten salt component and field testing work, advanced fluids and storage solicitation preparation, and proposal evaluation for new advanced HTF and thermal storage FOA.

  16. Project Profile: Innovative Thermal Energy Storage for Baseload...

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

    Thermal Energy Storage for Baseload Solar Power Generation Project Profile: Innovative Thermal Energy Storage for Baseload Solar Power Generation University of South Florida logo...

  17. U.S. CHP Installations Incorporating Thermal Energy Storage ...

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

    CHP Installations Incorporating Thermal Energy Storage (TES) andor Turbine Inlet Cooling (TIC), September 2003 U.S. CHP Installations Incorporating Thermal Energy Storage (TES)...

  18. Project Profile: Degradation Mechanisms for Thermal Energy Storage...

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

    Degradation Mechanisms for Thermal Energy Storage and Heat Transfer Fluid Containment Materials Project Profile: Degradation Mechanisms for Thermal Energy Storage and Heat Transfer...

  19. Project Profile: Innovative Phase Change Thermal Energy Storage...

    Energy Savers [EERE]

    Phase Change Thermal Energy Storage Solution for Baseload Power Project Profile: Innovative Phase Change Thermal Energy Storage Solution for Baseload Power Infinia logo Infinia,...

  20. Project Profile: Reducing the Cost of Thermal Energy Storage...

    Energy Savers [EERE]

    Reducing the Cost of Thermal Energy Storage for Parabolic Trough Solar Power Plants Project Profile: Reducing the Cost of Thermal Energy Storage for Parabolic Trough Solar Power...

  1. EXPERIMENTAL AND THEORETICAL STUDIES OF THERMAL ENERGY STORAGE IN AQUIFERS

    E-Print Network [OSTI]

    Tsang, Chin Fu

    2011-01-01T23:59:59.000Z

    Department of Energy, Energy Storage Division through thegeneration and energy storage, Presented at Frontiers ofIn Proceed- ings of Thermal Energy Storage in Aquifers Work-

  2. Molten Salt-Carbon Nanotube Thermal Energy Storage for Concentrating Solar Power Systems

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHighandSWPA / SPRA /Ml'.Solar Thermal Solar Thermal Industrial

  3. AQUIFER THERMAL ENERGY STORAGE-A SURVEY

    E-Print Network [OSTI]

    Tsang, Chin Fu

    2012-01-01T23:59:59.000Z

    energy storage for cogeneration and solar systems, inTwin City district cogeneration system, in Proceedings,proposed system, based on cogeneration of power and heat by

  4. Assessment and Prediction of the Thermal Performance of a Centralized Latent Heat Thermal Energy Storage Utilizing Artificial Neural Network

    E-Print Network [OSTI]

    El-Sawi, A.; Haghighat, F.; Akbari, H.

    2013-01-01T23:59:59.000Z

    A simulation tool is developed to analyze the thermal performance of a centralized latent heat thermal energy storage system (LHTES) using computational fluid dynamics (CFD). The LHTES system is integrated with a mechanical ventilation system...

  5. Dish Sterling High Performance Thermal Storage

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

    Stirling High Performance Thermal Storage Sandia National Laboratories SNLAndrakaA: FY13Q2: Charles E. Andraka * 2-D PCM model extended to include realistic heat pipe boundary...

  6. Exergetic analysis of a steam-flashing thermal storage Paul T. O'Brien

    E-Print Network [OSTI]

    @vipac.com.au 2 PhD, Australian National University ABSTRACT Thermal energy storage is attractive in the design of the performance of a cycle that uses large-scale thermal energy storage via hot compressed liquid waterExergetic analysis of a steam-flashing thermal storage system Paul T. O'Brien 1 and John Pye 2 1

  7. THERMAL ENERGY STORAGE IN AQUIFERS WORKSHOP

    E-Print Network [OSTI]

    Authors, Various

    2011-01-01T23:59:59.000Z

    electric generation plant for a co-generation program utilizing Thermalthermal energy storage would make it possible to produce heat as a by- product of electric generation,thermal storage at suffi- ciently high temperature and pressure, and with suffi- cient transfer rates, that electric power generation

  8. The Volatility and the Thermal Storage Performance of Binary Polyalcohol Systems Used in the Wall

    E-Print Network [OSTI]

    Yan, Q.

    2006-01-01T23:59:59.000Z

    . The structural and chemical analyses of a kind of shape-stabilized paraffin. ACTA Energiae Solaris Sinica. 2000, 21(4):4 421. (in Chinese) Qin Penghua, Yang Rui, Zhang Yinping etc.. Thermal performance of shape-stabilized phase change materials. J (in... Chinese) Fan Yaofeng, Zhang Xinxiang. Progress in studies of solid-solid phase change materials. REVIEW OF MATERIALS. 2003,17(7):50-53. (in Ch [10] Ruan Deshui?Zhang Taiping. DSC Research of phase change materials. ACTA Energiae Solaris Sinica...

  9. Project Profile: Low-Cost Metal Hydride Thermal Energy Storage System |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn April 23, 2014, an OHASeptember 2010 | DepartmentEnergyThermalDepartment of

  10. Boosting CSP Production with Thermal Energy Storage

    SciTech Connect (OSTI)

    Denholm, P.; Mehos, M.

    2012-06-01T23:59:59.000Z

    Combining concentrating solar power (CSP) with thermal energy storage shows promise for increasing grid flexibility by providing firm system capacity with a high ramp rate and acceptable part-load operation. When backed by energy storage capability, CSP can supplement photovoltaics by adding generation from solar resources during periods of low solar insolation. The falling cost of solar photovoltaic (PV) - generated electricity has led to a rapid increase in the deployment of PV and projections that PV could play a significant role in the future U.S. electric sector. The solar resource itself is virtually unlimited; however, the actual contribution of PV electricity is limited by several factors related to the current grid. The first is the limited coincidence between the solar resource and normal electricity demand patterns. The second is the limited flexibility of conventional generators to accommodate this highly variable generation resource. At high penetration of solar generation, increased grid flexibility will be needed to fully utilize the variable and uncertain output from PV generation and to shift energy production to periods of high demand or reduced solar output. Energy storage is one way to increase grid flexibility, and many storage options are available or under development. In this article, however, we consider a technology already beginning to be used at scale - thermal energy storage (TES) deployed with concentrating solar power (CSP). PV and CSP are both deployable in areas of high direct normal irradiance such as the U.S. Southwest. The role of these two technologies is dependent on their costs and relative value, including how their value to the grid changes as a function of what percentage of total generation they contribute to the grid, and how they may actually work together to increase overall usefulness of the solar resource. Both PV and CSP use solar energy to generate electricity. A key difference is the ability of CSP to utilize high-efficiency TES, which turns CSP into a partially dispatchable resource. The addition of TES produces additional value by shifting the delivery of solar energy to periods of peak demand, providing firm capacity and ancillary services, and reducing integration challenges. Given the dispatchability of CSP enabled by TES, it is possible that PV and CSP are at least partially complementary. The dispatchability of CSP with TES can enable higher overall penetration of the grid by solar energy by providing solar-generated electricity during periods of cloudy weather or at night, when PV-generated power is unavailable. Such systems also have the potential to improve grid flexibility, thereby enabling greater penetration of PV energy (and other variable generation sources such as wind) than if PV were deployed without CSP.

  11. Thermal management systems and methods

    DOE Patents [OSTI]

    Gering, Kevin L.; Haefner, Daryl R.

    2006-12-12T23:59:59.000Z

    A thermal management system for a vehicle includes a heat exchanger having a thermal energy storage material provided therein, a first coolant loop thermally coupled to an electrochemical storage device located within the first coolant loop and to the heat exchanger, and a second coolant loop thermally coupled to the heat exchanger. The first and second coolant loops are configured to carry distinct thermal energy transfer media. The thermal management system also includes an interface configured to facilitate transfer of heat generated by an internal combustion engine to the heat exchanger via the second coolant loop in order to selectively deliver the heat to the electrochemical storage device. Thermal management methods are also provided.

  12. Futurestock'2003 9 International Conference on Thermal Energy Storage, Warsaw, POLAND

    E-Print Network [OSTI]

    381 Futurestock'2003 9 th International Conference on Thermal Energy Storage, Warsaw, POLAND is also needed when designing a BTES (Borehole Thermal Energy Storage) system. The ground thermal Thermal Response Test for BTES Applications - State of the Art 2001 Signhild GEHLIN1 and Jeff D. SPITLER2

  13. Thermal Energy Storage for Cooling of Commercial Buildings

    E-Print Network [OSTI]

    Akbari, H.

    2010-01-01T23:59:59.000Z

    trates a design load profile for a partial storage system.load management / full storage / ice storage / partialfor partial storage) because part of the cooling load is

  14. Initial findings: The integration of water loop heat pump and building structural thermal storage systems

    SciTech Connect (OSTI)

    Marseille, T.J.; Johnson, B.K.; Wallin, R.P.; Chiu, S.A.; Crawley, D.B.

    1989-01-01T23:59:59.000Z

    This report is one in a series of reports describing research activities in support of the US Department of Energy (DOE) Commercial Building System Integration Research Program. The goal of the program is to develop the scientific and technical basis for improving integrated decision-making during design and construction. Improved decision-making could significantly reduce buildings' energy use by the year 2010. The objectives of the Commercial Building System Integration Research Program are: to identify and quantify the most significant energy-related interactions among building subsystems; to develop the scientific and technical basis for improving energy related interactions in building subsystems; and to provide guidance to designers, owners, and builders for improving the integration of building subsystems for energy efficiency. The lead laboratory for this program is the Pacific Northwest Laboratory. A wide variety of expertise and resources from industry, academia, other government entities, and other DOE laboratories are used in planning, reviewing and conducting research activities. Cooperative and complementary research, development, and technology transfer activities with other interested organizations are actively pursued. In this report, the interactions of a water loop heat pump system and building structural mass and their effect on whole-building energy performance is analyzed. 10 refs., 54 figs., 1 tab.

  15. Evaluation and Optimization of Underground Thermal Energy Storage Systems of Energy Efficient Buildings (WKSP)- A Project within the new German R&D- Framework EnBop 

    E-Print Network [OSTI]

    Bockelmann, F.; Kipry, H.; Plesser, S.; Fisch, M. N.

    2008-01-01T23:59:59.000Z

    Evaluation and optimization of underground thermal energy storage systems of Energy Efficient Buildings (WKSP) - A project within the new German R&D-framework EnBop Dipl.-Ing. Franziska Bockelmann IGS ? Institute of Building Services... and Energydesign, Technical University of Braunschweig, Germany Dipl.-Ing. Herdis Kipry IGS ? Institute of Building Services and Energydesign, Technical University of Braunschweig, Germany Dipl.-Ing. Stefan Plesser Head of Energy Efficient Non...

  16. Phase Change Materials for Thermal Energy Storage in Concentrated Solar Thermal Power Plants

    E-Print Network [OSTI]

    Hardin, Corey Lee

    2011-01-01T23:59:59.000Z

    STORAGE FOR CONCENTRATING SOLAR POWER PLANTS,” Eurosun 2010,COST REDUCTION STUDY FOR SOLAR THERMAL POWER PLANTS, Ottawa,Storage in Concentrated Solar Thermal Power Plants A Thesis

  17. Aquifer thermal energy (heat and chill) storage

    SciTech Connect (OSTI)

    Jenne, E.A. (ed.)

    1992-11-01T23:59:59.000Z

    As part of the 1992 Intersociety Conversion Engineering Conference, held in San Diego, California, August 3--7, 1992, the Seasonal Thermal Energy Storage Program coordinated five sessions dealing specifically with aquifer thermal energy storage technologies (ATES). Researchers from Sweden, The Netherlands, Germany, Switzerland, Denmark, Canada, and the United States presented papers on a variety of ATES related topics. With special permission from the Society of Automotive Engineers, host society for the 1992 IECEC, these papers are being republished here as a standalone summary of ATES technology status. Individual papers are indexed separately.

  18. LiH thermal energy storage device

    DOE Patents [OSTI]

    Olszewski, M.; Morris, D.G.

    1994-06-28T23:59:59.000Z

    A thermal energy storage device for use in a pulsed power supply to store waste heat produced in a high-power burst operation utilizes lithium hydride as the phase change thermal energy storage material. The device includes an outer container encapsulating the lithium hydride and an inner container supporting a hydrogen sorbing sponge material such as activated carbon. The inner container is in communication with the interior of the outer container to receive hydrogen dissociated from the lithium hydride at elevated temperatures. 5 figures.

  19. Thermal Energy Storage Technology for Transportation and Other...

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

    Energy Storage Technology for Transportation and Other Applications D. Bank, M. Maurer, J. Penkala, K. Sehanobish, A. Soukhojak Thermal Energy Storage Technology for Transportation...

  20. Project Profile: Novel Thermal Storage Technologies for Concentrating...

    Energy Savers [EERE]

    storage methods that would be applicable for large-scale implementation of thermal energy storage. The team aims to: Develop two methodologies with different designs and...

  1. technology offer SandTES -High Temperature Sand Thermal Energy Storage

    E-Print Network [OSTI]

    Szmolyan, Peter

    technology offer SandTES - High Temperature Sand Thermal Energy Storage key words: High Temperature Energy Storage | Fluidized Bed | Sand | The invention consists of a fluidized bed with internal heat together with Dr. Eisl of ENRAG GmbH. Background Thermal energy storage (TES) systems are essential

  2. Design and installation manual for thermal energy storage

    SciTech Connect (OSTI)

    Cole, R L; Nield, K J; Rohde, R R; Wolosewicz, R M

    1980-01-01T23:59:59.000Z

    The purpose of this manual is to provide information on the design and installation of thermal energy storage in active solar systems. It is intended for contractors, installers, solar system designers, engineers, architects, and manufacturers who intend to enter the solar energy business. The reader should have general knowledge of how solar heating and cooling systems operate and knowledge of construction methods and building codes. Knowledge of solar analysis methods such as f-Chart, SOLCOST, DOE-1, or TRNSYS would be helpful. The information contained in the manual includes sizing storage, choosing a location for the storage device, and insulation requirements. Both air-based and liquid-based systems are covered with topics on designing rock beds, tank types, pump and fan selection, installation, costs, and operation and maintenance. Topics relevant to latent heat storage include properties of phase-change materials, sizing the storage unit, insulating the storage unit, available systems, and cost. Topics relevant to heating domestic water include safety, single- and dual-tank systems, domestic water heating with air- and liquid-based space heating systems, and stand alone domestics hot water systems. Several appendices present common problems with storage systems and their solutions, heat transfer fluid properties, economic insulation thickness, heat exchanger sizing, and sample specifications for heat exchangers, wooden rock bins, steel tanks, concrete tanks, and fiberglass-reinforced plastic tanks.

  3. THEORETICAL STUDIES IN LONG-TERM THERMAL ENERGY STORAGE IN AQUIFERS

    E-Print Network [OSTI]

    Tsang, C.F.

    2013-01-01T23:59:59.000Z

    Mathematical Modeling of Thermal Energy Storage in Aquifers.of Aquifer Thermal Energy Storage Workshop, Lawrencethe Seasonal Thermal Energy Storage program managed by

  4. AQUIFER THERMAL ENERGY STORAGE. A NUMERICAL SIMULATION OF AUBURN UNIVERSITY FIELD EXPERIMENTS

    E-Print Network [OSTI]

    Tsang, Chin Fu

    2013-01-01T23:59:59.000Z

    Auburn University Thermal Energy Storage , LBL No. 10194.Mathematical modeling of thermal energy storage in aquifers,of Current Aquifer Thermal Energy Storage Programs (in

  5. SEASONAL THERMAL ENERGY STORAGE IN AQUIFERS-MATHEMATICAL MODELING STUDIES IN 1979

    E-Print Network [OSTI]

    Tsang, Chin Fu

    2013-01-01T23:59:59.000Z

    of Aquifer Thermal Energy Storage." Lawrence Berkeleythe Auburn University Thermal Energy Storage Experiment."LBL~l0208 SEASONAL THERMAL ENERGY STORAGE IN AQUIFERS~

  6. THEORETICAL STUDIES IN LONG-TERM THERMAL ENERGY STORAGE IN AQUIFERS

    E-Print Network [OSTI]

    Tsang, C.F.

    2013-01-01T23:59:59.000Z

    Mathematical Modeling of Thermal Energy Storage in Aquifers.of Aquifer Thermal Energy Storage Workshop, Lawrencewithin the Seasonal Thermal Energy Storage program managed

  7. SEASONAL THERMAL ENERGY STORAGE IN AQUIFERS-MATHEMATICAL MODELING STUDIES IN 1979

    E-Print Network [OSTI]

    Tsang, Chin Fu

    2013-01-01T23:59:59.000Z

    Aspects of Aquifer Thermal Energy Storage." Lawrencethe Auburn University Thermal Energy Storage Experiment."LBL~l0208 SEASONAL THERMAL ENERGY STORAGE IN AQUIFERS~

  8. THEORETICAL STUDIES IN LONG-TERM THERMAL ENERGY STORAGE IN AQUIFERS

    E-Print Network [OSTI]

    Tsang, C.F.

    2013-01-01T23:59:59.000Z

    Mathematical Modeling of Thermal Energy Storage in Aquifers.Proceedings of Aquifer Thermal Energy Storage Workshop,within the Seasonal Thermal Energy Storage program managed

  9. Phase Change Materials for Thermal Energy Storage in Concentrated Solar Thermal Power Plants

    E-Print Network [OSTI]

    Hardin, Corey Lee

    2011-01-01T23:59:59.000Z

    UNIVERSITY OF CALIFORNIA RIVERSIDE Phase Change Materials for Thermal Energy Storage in Concentrated Solar

  10. Novel Thermal Storage Technologies for Concentrating Solar Power Generation

    SciTech Connect (OSTI)

    Neti, Sudhakar; Oztekin, Alparslan; Chen, John; Tuzla, Kemal; Misiolek, Wojciech

    2013-06-20T23:59:59.000Z

    The technologies that are to be developed in this work will enable storage of thermal energy in 100 MWe solar energy plants for 6-24 hours at temperatures around 300oC and 850oC using encapsulated phase change materials (EPCM). Several encapsulated phase change materials have been identified, fabricated and proven with calorimetry. Two of these materials have been tested in an airflow experiment. A cost analysis for these thermal energy storage systems has also been conducted that met the targets established at the initiation of the project.

  11. Thermal energy storage for cooling of commercial buildings

    SciTech Connect (OSTI)

    Akbari, H. (Lawrence Berkeley Lab., CA (USA)); Mertol, A. (Science Applications International Corp., Los Altos, CA (USA))

    1988-07-01T23:59:59.000Z

    The storage of coolness'' has been in use in limited applications for more than a half century. Recently, because of high electricity costs during utilities' peak power periods, thermal storage for cooling has become a prime target for load management strategies. Systems with cool storage shift all or part of the electricity requirement from peak to off-peak hours to take advantage of reduced demand charges and/or off-peak rates. Thermal storage technology applies equally to industrial, commercial, and residential sectors. In the industrial sector, because of the lack of economic incentives and the custom design required for each application, the penetration of this technology has been limited to a few industries. The penetration rate in the residential sector has been also very limited due to the absence of economic incentives, sizing problems, and the lack of compact packaged systems. To date, the most promising applications of these systems, therefore, appear to be for commercial cooling. In this report, the current and potential use of thermal energy storage systems for cooling commercial buildings is investigated. In addition, a general overview of the technology is presented and the applicability and cost-effectiveness of this technology for developed and developing countries are discussed. 28 refs., 12 figs., 1 tab.

  12. Compressed gas fuel storage system

    DOE Patents [OSTI]

    Wozniak, John J. (Columbia, MD); Tiller, Dale B. (Lincoln, NE); Wienhold, Paul D. (Baltimore, MD); Hildebrand, Richard J. (Edgemere, MD)

    2001-01-01T23:59:59.000Z

    A compressed gas vehicle fuel storage system comprised of a plurality of compressed gas pressure cells supported by shock-absorbing foam positioned within a shape-conforming container. The container is dimensioned relative to the compressed gas pressure cells whereby a radial air gap surrounds each compressed gas pressure cell. The radial air gap allows pressure-induced expansion of the pressure cells without resulting in the application of pressure to adjacent pressure cells or physical pressure to the container. The pressure cells are interconnected by a gas control assembly including a thermally activated pressure relief device, a manual safety shut-off valve, and means for connecting the fuel storage system to a vehicle power source and a refueling adapter. The gas control assembly is enclosed by a protective cover attached to the container. The system is attached to the vehicle with straps to enable the chassis to deform as intended in a high-speed collision.

  13. Phase Change Materials for Thermal Energy Storage in Concentrated Solar Thermal Power Plants

    E-Print Network [OSTI]

    Hardin, Corey Lee

    2011-01-01T23:59:59.000Z

    COST REDUCTION STUDY FOR SOLAR THERMAL POWER PLANTS, Ottawa,Storage in Concentrated Solar Thermal Power Plants A ThesisStorage in Concentrated Solar Thermal Power Plants by Corey

  14. TIGER:Thermal-Aware File Assignment in Storage Clusters

    E-Print Network [OSTI]

    Qin, Xiao

    energy efficiency of data centers housing storage clusters. Disks have non-negligible thermal impactTIGER:Thermal-Aware File Assignment in Storage Clusters Ajit Chavan, Xunfei Jiang, Mohemmad I/O performance. I. INTRODUCTION Thermal management for power-dense storage clusters can address cooling problems

  15. User manual for AQUASTOR: a computer model for cost analysis of aquifer thermal-energy storage oupled with district-heating or cooling systems. Volume II. Appendices

    SciTech Connect (OSTI)

    Huber, H.D.; Brown, D.R.; Reilly, R.W.

    1982-04-01T23:59:59.000Z

    A computer model called AQUASTOR was developed for calculating the cost of district heating (cooling) using thermal energy supplied by an aquifer thermal energy storage (ATES) system. the AQUASTOR Model can simulate ATES district heating systems using stored hot water or ATES district cooling systems using stored chilled water. AQUASTOR simulates the complete ATES district heating (cooling) system, which consists of two prinicpal parts: the ATES supply system and the district heating (cooling) distribution system. The supply system submodel calculates the life-cycle cost of thermal energy supplied to the distribution system by simulating the technical design and cash flows for the exploration, development, and operation of the ATES supply system. The distribution system submodel calculates the life-cycle cost of heat (chill) delivered by the distribution system to the end-users by simulating the technical design and cash flows for the construction and operation of the distribution system. The model combines the technical characteristics of the supply system and the technical characteristics of the distribution system with financial and tax conditions for the entities operating the two systems into one techno-economic model. This provides the flexibility to individually or collectively evaluate the impact of different economic and technical parameters, assumptions, and uncertainties on the cost of providing district heating (cooling) with an ATES system. This volume contains all the appendices, including supply and distribution system cost equations and models, descriptions of predefined residential districts, key equations for the cooling degree-hour methodology, a listing of the sample case output, and appendix H, which contains the indices for supply input parameters, distribution input parameters, and AQUASTOR subroutines.

  16. Aquifer thermal energy storage. International symposium: Proceedings

    SciTech Connect (OSTI)

    NONE

    1995-05-01T23:59:59.000Z

    Aquifers have been used to store large quantities of thermal energy to supply process cooling, space cooling, space heating, and ventilation air preheating, and can be used with or without heat pumps. Aquifers are used as energy sinks and sources when supply and demand for energy do not coincide. Aquifer thermal energy storage may be used on a short-term or long-term basis; as the sole source of energy or as a partial storage; at a temperature useful for direct application or needing upgrade. The sources of energy used for aquifer storage are ambient air, usually cold winter air; waste or by-product energy; and renewable energy such as solar. The present technical, financial and environmental status of ATES is promising. Numerous projects are operating and under development in several countries. These projects are listed and results from Canada and elsewhere are used to illustrate the present status of ATES. Technical obstacles have been addressed and have largely been overcome. Cold storage in aquifers can be seen as a standard design option in the near future as it presently is in some countries. The cost-effectiveness of aquifer thermal energy storage is based on the capital cost avoidance of conventional chilling equipment and energy savings. ATES is one of many developments in energy efficient building technology and its success depends on relating it to important building market and environmental trends. This paper attempts to provide guidance for the future implementation of ATES. Individual projects have been processed separately for entry onto the Department of Energy databases.

  17. Energy storage connection system

    DOE Patents [OSTI]

    Benedict, Eric L.; Borland, Nicholas P.; Dale, Magdelena; Freeman, Belvin; Kite, Kim A.; Petter, Jeffrey K.; Taylor, Brendan F.

    2012-07-03T23:59:59.000Z

    A power system for connecting a variable voltage power source, such as a power controller, with a plurality of energy storage devices, at least two of which have a different initial voltage than the output voltage of the variable voltage power source. The power system includes a controller that increases the output voltage of the variable voltage power source. When such output voltage is substantially equal to the initial voltage of a first one of the energy storage devices, the controller sends a signal that causes a switch to connect the variable voltage power source with the first one of the energy storage devices. The controller then causes the output voltage of the variable voltage power source to continue increasing. When the output voltage is substantially equal to the initial voltage of a second one of the energy storage devices, the controller sends a signal that causes a switch to connect the variable voltage power source with the second one of the energy storage devices.

  18. THERMAL ENERGY STORAGE IN AQUIFERS WORKSHOP

    E-Print Network [OSTI]

    Authors, Various

    2011-01-01T23:59:59.000Z

    The Legalization of Ground Water Storage," Water Resourcesprocedure to above ground storage of heat in huge insulatedthis project is heat storage in ground-water regions storage

  19. Thermal performance of the Brookhaven natural thermal storage house

    SciTech Connect (OSTI)

    Ghaffari, H.T.; Jones, R.F.

    1981-01-01T23:59:59.000Z

    In the Brookhaven natural thermal storage house, an energy-efficient envelope, passive solar collectors, and a variety of energy conservation methods are incorporated. The thermal characteristics of the house during the tested heating season are evaluated. Temperature distributions at different zones are displayed, and the effects of extending heating supply ducts only to the main floor and heating return ducts only from the second floor are discussed. The thermal retrievals from the structure and the passive collectors are assessed, and the total conservation and passive solar contributions are outlined. Several correlation factors relating these thermal behaviors are introduced, and their diurnal variations are displayed. Finally, the annual energy requirements, and the average load factors are analyzed and discussed.

  20. Methods of forming thermal management systems and thermal management methods

    DOE Patents [OSTI]

    Gering, Kevin L.; Haefner, Daryl R.

    2012-06-05T23:59:59.000Z

    A thermal management system for a vehicle includes a heat exchanger having a thermal energy storage material provided therein, a first coolant loop thermally coupled to an electrochemical storage device located within the first coolant loop and to the heat exchanger, and a second coolant loop thermally coupled to the heat exchanger. The first and second coolant loops are configured to carry distinct thermal energy transfer media. The thermal management system also includes an interface configured to facilitate transfer of heat generated by an internal combustion engine to the heat exchanger via the second coolant loop in order to selectively deliver the heat to the electrochemical storage device. Thermal management methods are also provided.

  1. Heat recovery and thermal storage : a study of the Massachusetts State Transportation Building

    E-Print Network [OSTI]

    Bjorklund, Abbe Ellen

    1986-01-01T23:59:59.000Z

    A study of the energy system at the Massachusetts State Transportation Building was conducted. This innovative energy system utilizes internal-source heat pumps and a water thermal storage system to provide building heating ...

  2. SEASONAL THERMAL ENERGY STORAGE IN AQUIFERS-MATHEMATICAL MODELING STUDIES IN 1979

    E-Print Network [OSTI]

    Tsang, Chin Fu

    2013-01-01T23:59:59.000Z

    of Aquifer Thermal Energy Storage." Lawrence BerkeleyP, Andersen, "'rhermal Energy Storage in a Confined Aquifer~University Thermal Energy Storage Experiment." Lawrence

  3. HIERARCHICAL STORAGE SYSTEMS FOR INTERACTIVE

    E-Print Network [OSTI]

    Tobagi, Fouad

    HIERARCHICAL STORAGE SYSTEMS FOR INTERACTIVE VIDEO­ON­DEMAND Shueng­Han Gary Chan and Fouad A; Hierarchical Storage Systems for Interactive Video­On­Demand Shueng­Han Gary Chan and Fouad A. Tobagi Technical­9040 pubs@shasta.stanford.edu Abstract On­demand video servers based on hierarchical storage systems

  4. Cool Storage Performance

    E-Print Network [OSTI]

    Eppelheimer, D. M.

    1985-01-01T23:59:59.000Z

    . This article covers three thermal storage topics. The first section catalogs various thermal storage systems and applications. Included are: load shifting and load leveling, chilled water storage systems, and ice storage systems using Refrigerant 22 or ethylene...

  5. Thermal Energy Storage for Vacuum Precoolers

    E-Print Network [OSTI]

    Nugent, D. M.

    for load shifting. Using thermal energy storage results in a load shift of 174.5 kw. With TES, total energy consumption and operating costs are reduced by $13,400 per season. This is a result of low off-peak energy rates and increased compressor... because the compressors ran fully loaded, had a higher average suction temperature, a lower average discharge pressure, and benefitted from increased subcooling. The average on-peak COP was 4.36. On-peak head pressures as high as 204.2 psig were...

  6. Thermal Storage Materials Laboratory (Fact Sheet), NREL (National...

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

    materials that can be used as high-temperature heat transfer fluids or thermal energy storage media in concentrating solar power (CSP) plants. Research objectives include...

  7. Advanced Heat Transfer Fluids and Novel Thermal Storage Concepts...

    Energy Savers [EERE]

    were selected under this competitive solicitation: Abengoa: Reducing the Cost of Thermal Energy Storage for Parabolic Trough Solar Power Plants Acciona Solar: Indirect,...

  8. THERMAL ENERGY STORAGE IN AQUIFERS WORKSHOP

    E-Print Network [OSTI]

    Authors, Various

    2011-01-01T23:59:59.000Z

    1975. Underground Storage of Treated Water: A Field Test.1975. "Underground Storage of Treated Water: A Field Test,"

  9. Thermal Storage and Advanced Heat Transfer Fluids (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2010-08-01T23:59:59.000Z

    Fact sheet describing NREL CSP Program capabilities in the area of thermal storage and advanced heat transfer fluids: measuring thermophysical properties, measuring fluid flow and heat transfer, and simulating flow of thermal energy and fluid.

  10. Thermal Control & System Integration

    Broader source: Energy.gov [DOE]

    The thermal control and system integration activity focuses on issues such as the integration of motor and power control technologies and the development of advanced thermal control technologies....

  11. Composite materials for thermal energy storage

    DOE Patents [OSTI]

    Benson, D.K.; Burrows, R.W.; Shinton, Y.D.

    1985-01-04T23:59:59.000Z

    A composite material for thermal energy storage based upon polyhydric alcohols, such as pentaerythritol, trimethylol ethane (also known as pentaglycerine), neopentyl glycol and related compounds including trimethylol propane, monoaminopentaerythritol, diamino-pentaerythritol and tris(hydroxymethyl)acetic acid, separately or in combinations, which provide reversible heat storage through crystalline phase transformations. These PCM's do not become liquid during use and are in contact with at least one material selected from the group consisting of metals, carbon, siliceous, plastic, cellulosic, natural fiber, artificial fiber, concrete, gypsum, porous rock, and mixtures thereof. Particulate additions such as aluminum or graphite powders, as well as metal and carbon fibers can also be incorporated therein. Particulate and/or fibrous additions can be introduced into molten phase change materials which can then be cast into various shapes. After the phase change materials have solidified, the additions will remain dispersed throughout the matrix of the cast solid. The polyol is in contact with at least one material selected from the group consisting of metals, carbon, siliceous, plastic, cellulosic, natural fiber, artificial fiber, concrete, gypsum, and mixtures thereof.

  12. Composite materials for thermal energy storage

    DOE Patents [OSTI]

    Benson, David K. (Golden, CO); Burrows, Richard W. (Conifer, CO); Shinton, Yvonne D. (Northglenn, CO)

    1986-01-01T23:59:59.000Z

    The present invention discloses composite material for thermal energy storage based upon polyhydric alcohols, such as pentaerythritol, trimethylol ethane (also known as pentaglycerine), neopentyl glycol and related compounds including trimethylol propane, monoaminopentaerythritol, diamino-pentaerythritol and tris(hydroxymethyl)acetic acid, separately or in combinations, which provide reversible heat storage through crystalline phase transformations. These phase change materials do not become liquid during use and are in contact with at least one material selected from the group consisting of metals, carbon siliceous, plastic, cellulosic, natural fiber, artificial fiber, concrete, gypsum, porous rock, and mixtures thereof. Particulate additions, such as aluminum or graphite powders, as well as metal and carbon fibers can also be incorporated therein. Particulate and/or fibrous additions can be introduced into molten phase change materials which can then be cast into various shapes. After the phase change materials have solidified, the additions will remain dispersed throughout the matrix of the cast solid. The polyol is in contact with at least one material selected from the group consisting of metals, carbon siliceous, plastic, cellulosic, natural fiber, artificial fiber, concrete, gypsum, and mixtures thereof.

  13. Sandia National Laboratories: Energy Storage Systems

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

    Sandian Spoke at the New York Energy Storage Expo On December 12, 2014, in Energy, Energy Storage, Energy Storage Systems, Grid Integration, Infrastructure Security, News, News &...

  14. THERMAL ENERGY STORAGE IN AQUIFERS WORKSHOP

    E-Print Network [OSTI]

    Authors, Various

    2011-01-01T23:59:59.000Z

    must be if mal energy storage technologies as means for con-Robert Thorne. Energy Storage is more technology-orientedEnergy with Heat Storage Wells," Environmental Science and Technology,

  15. MULTIPLE WELL VARIABLE RATE WELL TEST ANALYSIS OF DATA FROM THE AUBURN UNIVERSITY THERMAL ENERGY STORAGE PROGRAM

    E-Print Network [OSTI]

    Doughty, Christine

    2012-01-01T23:59:59.000Z

    experimental Thermal energy storage in confined aquifers. ©lAUBURN UNIVERSITY THERMAL ENERGY STORAGE PROGRM1 Christineseries of aquifer thermal energy storage field experiments.

  16. Sandia National Laboratories: Energy Storage Systems

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

    Reserve University On January 28, 2014, in Computational Modeling & Simulation, Energy, Energy Storage, Energy Storage Systems, Infrastructure Security, Materials Science,...

  17. Sandia National Laboratories: Energy Storage Systems

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

    in Center for Infrastructure Research and Innovation (CIRI), Energy, Energy Assurance, Energy Storage, Energy Storage Systems, Facilities, Infrastructure Security, Materials...

  18. Conceptual design and engineering studies of adiabatic compressed air energy storage (CAES) with thermal energy storage

    SciTech Connect (OSTI)

    Hobson, M. J.

    1981-11-01T23:59:59.000Z

    The objective of this study was to perform a conceptual engineering design and evaluation study and to develop a design for an adiabatic CAES system using water-compensated hard rock caverns for compressed air storage. The conceptual plant design was to feature underground containment for thermal energy storage and water-compensated hard rock caverns for high pressure air storage. Other design constraints included the selection of turbomachinery designs that would require little development and would therefore be available for near-term plant construction and demonstration. The design was to be based upon the DOE/EPRI/PEPCO-funded 231 MW/unit conventional CAES plant design prepared for a site in Maryland. This report summarizes the project, its findings, and the recommendations of the study team; presents the development and optimization of the plant heat cycle and the selection and thermal design of the thermal energy storage system; discusses the selection of turbomachinery and estimated plant performance and operational capability; describes the control system concept; and presents the conceptual design of the adiabatic CAES plant, the cost estimates and economic evaluation, and an assessment of technical and economic feasibility. Particular areas in the plant design requiring further development or investigation are discussed. It is concluded that the adiabatic concept appears to be the most attractive candidate for utility application in the near future. It is operationally viable, economically attractive compared with competing concerns, and will require relatively little development before the construction of a plant can be undertaken. It is estimated that a utility could start the design of a demonstration plant in 2 to 3 years if research regarding TES system design is undertaken in a timely manner. (LCL)

  19. The Added Economic and Environmental Value of Solar Thermal Systems in Microgrids with Combined Heat and Power

    E-Print Network [OSTI]

    Marnay, Chris

    2010-01-01T23:59:59.000Z

    Environmental Value of Solar Thermal Systems in MicrogridsEnvironmental Value of Solar Thermal Systems in Microgridsa) ABSTRACT The addition of solar thermal and heat storage

  20. Development of Thermal Analysis Capability of Dry Storage Cask for Spend Fuel Interim Storage

    SciTech Connect (OSTI)

    Fu-Kuang Ko; Liang, Thomas K.S.; Chung-Yu Yang [Institute of Nuclear Energy Research P.O. Box 3-3, Longtan, 32500, Taiwan (China)

    2002-07-01T23:59:59.000Z

    As most of the nuclear power plants, on-site spent fuel pools (SFP) of Taiwan's plants were not originally designed with a storage capacity for all the spent fuel generated over the operating life by their reactors. For interim spent fuel storage, dry casks are one of the most reliable measures to on-site store over-filled assemblies from SFPs. The NUHOMS{sup R}-52B System consisting of a canister stored horizontally in a concrete module is selected for thermal evaluation in this paper. The performance of each cask in criticality, radioactive, material and thermal needs to be carefully addressed to ensure its enduring safety. Regarding the thermal features of dry storage casks, three different kinds of heat transfer mechanisms are involved, which include natural convection heat transfer outside and/or inside the canister, radiation heat transfer inside and outside the canister, and conduction heat transfer inside the canister. To analyze the thermal performance of dry storage casks, RELAP5-3D is adopted to calculate the natural air convection and radiation heat transfer outside the canister to the ambient environment, and ANSYS is applied to calculate the internal conduction and radiation heat transfer. During coupling iteration between codes, the heat energy across the canister wall needs to be conserved, and the inner wall temperature of the canister needs to be converged. By the coupling of RELAP5-3D and ANSYS, the temperature distribution within each fuel assembly inside canisters can be calculated and the peaking cladding temperature can be identified. (authors)

  1. Thermal Analysis of a Dry Storage Concept for Capsule Dry Storage Project

    SciTech Connect (OSTI)

    JOSEPHSON, W S

    2003-09-04T23:59:59.000Z

    There are 1,936 cesium (Cs) and strontium (Sr) capsules stored in pools at the Waste Encapsulation and Storage Facility (WESF). These capsules will be moved to dry storage on the Hanford Site as an interim measure to reduce risk. The Cs/Sr Capsule Dry Storage Project is conducted under the assumption that the capsules will eventually be moved to the repository at Yucca Mountain, and the design criteria include requirements that will facilitate acceptance at the repository. The storage system must also permit retrieval of capsules in the event that vitrification of the capsule contents is pursued. The Capsule Advisory Panel (CAP) was created by the Project Manager for the Hanford Site Capsule Dry Storage Project (CDSP). The purpose of the CAP is to provide specific technical input to the CDSP; to identify design requirements; to ensure design requirements for the project are conservative and defensible; to identify and resolve emerging, critical technical issues, as requested; and to support technical reviews performed by regulatory organizations, as requested. The CAP will develop supporting and summary documents that can be used as part of the technical and safety bases for the CDSP. The purpose of capsule dry storage thermal analysis is to: (1) Summarize the pertinent thermal design requirements sent to vendors, (2) Summarize and address the assumptions that underlie those design requirements, (3) Demonstrate that an acceptable design exists that satisfies the requirements, (4) Identify key design features and phenomena that promote or impede design success, (5) Support other CAP analyses such as corrosion and integrity evaluations, and (6) Support the assessment of proposed designs. It is not the purpose of this report to optimize or fully analyze variations of postulated acceptable designs. The present evaluation will indicate the impact of various possible design features, but not systematically pursue design improvements obtainable through analysis refinements and/or relaxation of conservatisms. However, possible design improvements will be summarized for future application. All assumptions and related design features, while appropriate for conceptual designs, must be technically justified for the final design. The pertinent thermal design requirements and underlying assumptions are summarized in Section 1.3. The majority of the thermal analyses, as described in Sections 4.2 and 4.3, focus on an acceptable conceptual design arrived at by refinement of a preliminary but unacceptable design. The results of the subject thermal analyses, as presented in Section 4.0, satisfy items 3 and 4 above.

  2. Efficient Heat Storage Materials: Metallic Composites Phase-Change Materials for High-Temperature Thermal Energy Storage

    SciTech Connect (OSTI)

    None

    2011-11-21T23:59:59.000Z

    HEATS Project: MIT is developing efficient heat storage materials for use in solar and nuclear power plants. Heat storage materials are critical to the energy storage process. In solar thermal storage systems, heat can be stored in these materials during the day and released at night—when the sun’s not out—to drive a turbine and produce electricity. In nuclear storage systems, heat can be stored in these materials at night and released to produce electricity during daytime peak-demand hours. MIT is designing nanostructured heat storage materials that can store a large amount of heat per unit mass and volume. To do this, MIT is using phase change materials, which absorb a large amount of latent heat to melt from solid to liquid. MIT’s heat storage materials are designed to melt at high temperatures and conduct heat well—this makes them efficient at storing and releasing heat and enhances the overall efficiency of the thermal storage and energy-generation process. MIT’s low-cost heat storage materials also have a long life cycle, which further enhances their efficiency.

  3. Catalytically Enhanced Hydrogen Storage Systems

    E-Print Network [OSTI]

    with the Freedom CAR hydrogen storage system targets (Key parameters: cost, specific energy, and energy density). #12;Objectives I. Determination of the chemical nature of the titanium species responsible that are compatible with the Freedom CAR hydrogen storage system targets. Key parameters: cost, specific energy

  4. PHASE CHANGE MATERIALS IN FLOOR TILES FOR THERMAL ENERGY STORAGE

    SciTech Connect (OSTI)

    Douglas C. Hittle

    2002-10-01T23:59:59.000Z

    Passive solar systems integrated into residential structures significantly reduce heating energy consumption. Taking advantage of latent heat storage has further increased energy savings. This is accomplished by the incorporation of phase change materials into building materials used in passive applications. Trombe walls, ceilings and floors can all be enhanced with phase change materials. Increasing the thermal storage of floor tile by the addition of encapsulated paraffin wax is the proposed topic of research. Latent heat storage of a phase change material (PCM) is obtained during a change in phase. Typical materials use the latent heat released when the material changes from a liquid to a solid. Paraffin wax and salt hydrates are examples of such materials. Other PCMs that have been recently investigated undergo a phase transition from one solid form to another. During this process they will release heat. These are known as solid-state phase change materials. All have large latent heats, which makes them ideal for passive solar applications. Easy incorporation into various building materials is must for these materials. This proposal will address the advantages and disadvantages of using these materials in floor tile. Prototype tile will be made from a mixture of quartz, binder and phase change material. The thermal and structural properties of the prototype tiles will be tested fully. It is expected that with the addition of the phase change material the structural properties will be compromised to some extent. The ratio of phase change material in the tile will have to be varied to determine the best mixture to provide significant thermal storage, while maintaining structural properties that meet the industry standards for floor tile.

  5. Energy Storage Systems 2010 Update Conference Presentations ...

    Energy Savers [EERE]

    Systems 2010 Update Conference Presentations - Day 1, Session 1 Energy Storage Systems 2010 Update Conference Presentations - Day 1, Session 1 The U.S. DOE Energy Storage Systems...

  6. Title COMBINATION OF THERMAL SOLAR COLLECTORS, HEAT PUMP AND THERMAL ENERGY STORAGE FOR DWELLINGS IN BELGIUM.

    E-Print Network [OSTI]

    Contact Raf; De Herdt; Roel De Coninck; Filip Van Den Schoor; Lieve Helsen

    The amount of available solar energy in Belgium is more than sufficient to meet local heat demand for space heating and domestic hot water in a dwelling. However, the timing of both the availability of solar energy and the need for thermal energy, match only to a limited extent. Therefore, compact storage of the surplus of thermal energy is a critical issue. Depending on the temperature at which this energy is available, directly from the sun or indirectly through the storage, different combinations with a heat pump can be considered. By combining solar energy with a heat pump one may benefit on both sides since the fraction of solar energy increases as well as the performance of the heat pump. The aim of this thesis is to select the best out of three configurations that combine thermal solar collectors, heat pump and thermal energy storage for heating purposes in dwellings in Belgium, based on model simulations. Energetic, exergetic and economic criteria are used to evaluate the different configurations, while thermal comfort and domestic hot water tap profiles should be met. One (or more) performance index (indices) is (are) defined enabling an objective comparison between different systems. Today several systems are already commercially available on the international market [4]. Since these systems consist of different components, the system design is a crucial issue. Therefore, special attention should be paid to the sizing of the individual components, the interaction of the components within the global system, and the strategy for operational control. To study the interaction with the building, three types of buildings (already defined in a previous project) are considered.

  7. Seasonal thermal energy storage program. Progress report, January 1980-December 1980

    SciTech Connect (OSTI)

    Minor, J.E.

    1981-05-01T23:59:59.000Z

    The objectives of the Seasonal Thermal Energy Storage (STES) Program is to demonstrate the economic storage and retrieval of energy on a seasonal basis, using heat or cold available from waste sources or other sources during a surplus period to reduce peak period demand, reduce electric utilities peaking problems, and contribute to the establishment of favorable economics for district heating and cooling systems for commercialization of the technology. Aquifers, ponds, earth, and lakes have potential for seasonal storage. The initial thrust of the STES Program is toward utilization of ground-water systems (aquifers) for thermal energy storage. Program plans for meeting these objectives, the development of demonstration programs, and progress in assessing the technical, economic, legal, and environmental impacts of thermal energy storage are described. (LCL)

  8. THERMAL ENERGY STORAGE IN AQUIFERS WORKSHOP

    E-Print Network [OSTI]

    Authors, Various

    2011-01-01T23:59:59.000Z

    HAUSZ, W. , 1977. "Seasonal Storage in District Heating,"District Heating, July-August-September, 1977, pp. 5-11.aquifer storage for district heating and cooling. C. W.

  9. Solar thermal power system

    DOE Patents [OSTI]

    Bennett, Charles L.

    2010-06-15T23:59:59.000Z

    A solar thermal power generator includes an inclined elongated boiler tube positioned in the focus of a solar concentrator for generating steam from water. The boiler tube is connected at one end to receive water from a pressure vessel as well as connected at an opposite end to return steam back to the vessel in a fluidic circuit arrangement that stores energy in the form of heated water in the pressure vessel. An expander, condenser, and reservoir are also connected in series to respectively produce work using the steam passed either directly (above a water line in the vessel) or indirectly (below a water line in the vessel) through the pressure vessel, condense the expanded steam, and collect the condensed water. The reservoir also supplies the collected water back to the pressure vessel at the end of a diurnal cycle when the vessel is sufficiently depressurized, so that the system is reset to repeat the cycle the following day. The circuital arrangement of the boiler tube and the pressure vessel operates to dampen flow instabilities in the boiler tube, damp out the effects of solar transients, and provide thermal energy storage which enables time shifting of power generation to better align with the higher demand for energy during peak energy usage periods.

  10. ME 343 Thermal-Fluid Systems ABET EC2000 syllabus

    E-Print Network [OSTI]

    Ben-Yakar, Adela

    ) 8. Unsteady thermal system modeling, energy storage 9. Software design and development ClassME 343 ­ Thermal-Fluid Systems Page 1 ABET EC2000 syllabus ME 343 ­ Thermal-Fluid Systems Spring thermal and fluid processes are central to function and performance: thermodynamics of nonreacting

  11. The Strong Case for Thermal Energy Storage and Utility Incentives

    E-Print Network [OSTI]

    McCannon, L. W.

    construction costs, more stringent regulations, and increasing environmental constraints regarding development of new generating facilities. As the thermal cooling storage technology has matured, more and more utilities are recognizing that widespread use...

  12. Energy Storage R&D - Thermal Management Studies and Modeling

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

    Merit Review Energy Storage R&D Thermal Management Studies and Modeling Ahmad A. Pesaran, Ph. D. National Renewable Energy Laboratory Golden, Colorado February 25-28, 2008 DOE...

  13. An investigation of cement mortar thermal storage characteristics 

    E-Print Network [OSTI]

    Davis, Glenn Baker

    1979-01-01T23:59:59.000Z

    change in the storage material. Telkes and Raymond [1] investigated storing thermal energy in a sodium sulfate solution contained in sealed drums. Other salt solutions were tested [2], providing further evidence that phase-change materials are capable...

  14. An investigation of cement mortar thermal storage characteristics

    E-Print Network [OSTI]

    Davis, Glenn Baker

    1979-01-01T23:59:59.000Z

    change in the storage material. Telkes and Raymond [1] investigated storing thermal energy in a sodium sulfate solution contained in sealed drums. Other salt solutions were tested [2], providing further evidence that phase-change materials are capable...

  15. Semi-transparent solar energy thermal storage device

    DOE Patents [OSTI]

    McClelland, John F. (Ames, IA)

    1985-06-18T23:59:59.000Z

    A visually transmitting solar energy absorbing thermal storage module includes a thermal storage liquid containment chamber defined by an interior solar absorber panel, an exterior transparent panel having a heat mirror surface substantially covering the exterior surface thereof and associated top, bottom and side walls, Evaporation of the thermal storage liquid is controlled by a low vapor pressure liquid layer that floats on and seals the top surface of the liquid. Porous filter plugs are placed in filler holes of the module. An algicide and a chelating compound are added to the liquid to control biological and chemical activity while retaining visual clarity. A plurality of modules may be supported in stacked relation by a support frame to form a thermal storage wall structure.

  16. Semi-transparent solar energy thermal storage device

    DOE Patents [OSTI]

    McClelland, John F. (Ames, IA)

    1986-04-08T23:59:59.000Z

    A visually transmitting solar energy absorbing thermal storage module includes a thermal storage liquid containment chamber defined by an interior solar absorber panel, an exterior transparent panel having a heat mirror surface substantially covering the exterior surface thereof and associated top, bottom and side walls. Evaporation of the thermal storage liquid is controlled by a low vapor pressure liquid layer that floats on and seals the top surface of the liquid. Porous filter plugs are placed in filler holes of the module. An algicide and a chelating compound are added to the liquid to control biological and chemical activity while retaining visual clarity. A plurality of modules may be supported in stacked relation by a support frame to form a thermal storage wall structure.

  17. Designing a Thermal Energy Storage Program for Electric Utilities

    E-Print Network [OSTI]

    Niehus, T. L.

    1994-01-01T23:59:59.000Z

    Electric utilities are looking at thermal energy storage technology as a viable demand side management (DSM) option. In order for this DSM measure to be effective, it must be incorporated into a workable, well-structured utility program. This paper...

  18. Sandia National Laboratories: Energy Storage Systems

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

    Address Flooding, Water, and Power Systems On June 11, 2013, in Energy, Energy Assurance, Energy Storage, Energy Storage Systems, Energy Surety, Infrastructure Security, Microgrid,...

  19. Energy Storage Systems 2010 Update Conference Presentations ...

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

    : Poster Session Energy Storage Systems 2010 Update Conference Presentations - Day 3: Poster Session The U.S. DOE Energy Storage Systems Program (ESS) conducted a record-breaking...

  20. Development of a Procedure for the Predictive Control Strategy of a Chilled Water Storage System

    E-Print Network [OSTI]

    Wei, G.; Sakuri, Y.; Claridge, D. E.; Turner, W. D.; Liu, M.

    2000-01-01T23:59:59.000Z

    Thermal energy storage systems store the thermal energy produced by the chiller plant in periods of off-peak electrical demand or when cheaper electricity is available. The stored thermal energy is then withdrawn from the reservoir to satisfy...

  1. Sustainable systems for the storage and conversion of energy are dependent on interconnected

    E-Print Network [OSTI]

    Reisslein, Martin

    SEMTE abstract Sustainable systems for the storage and conversion of energy are dependent energy systems for harvesting low availability thermal energy and for providing integrated power, cooling performance buildings, renewable energy conversion, and energy storage can be streamlined by identifying

  2. Thermal neutron detection system

    DOE Patents [OSTI]

    Peurrung, Anthony J. (Richland, WA); Stromswold, David C. (West Richland, WA)

    2000-01-01T23:59:59.000Z

    According to the present invention, a system for measuring a thermal neutron emission from a neutron source, has a reflector/moderator proximate the neutron source that reflects and moderates neutrons from the neutron source. The reflector/moderator further directs thermal neutrons toward an unmoderated thermal neutron detector.

  3. Tuning energy transport in solar thermal systems using nanostructured materials

    E-Print Network [OSTI]

    Lenert, Andrej

    2014-01-01T23:59:59.000Z

    Solar thermal energy conversion can harness the entire solar spectrum and theoretically achieve very high efficiencies while interfacing with thermal storage or back-up systems for dispatchable power generation. Nanostructured ...

  4. Control Optimization for a Chilled Water Thermal Storage System Under a Complicated Time-of-Use Electricity Rate Schedule

    E-Print Network [OSTI]

    Zhou, J.; Wei, G.; Turner, W.D.; Deng, S.; Claridge, D.E.; Contreras, O.

    processes. A chiller start-stop optimization program was developed and implemented into the Energy Management and Control System (EMCS) to determine the number of chillers that need to be brought on line and the start and stop times for each chiller... every day, based on the prediction of the campus cooling load within the next 24 hours. With timely and accurate weather forecasting, the actual tank charging and discharging process closely matches the simulated process. The chiller plant...

  5. COUPLING SUPERCRITICAL AND SUPERHEATED DIRECT STEAM GENERATION WITH THERMAL ENERGY STORAGE

    E-Print Network [OSTI]

    COUPLING SUPERCRITICAL AND SUPERHEATED DIRECT STEAM GENERATION WITH THERMAL ENERGY STORAGE Joe a suitable turbine available. Overall, energy transport and storage concepts are presented that maximise dishes, in particular, minimisation of molten salt quantities in storage, and maximisation of thermal

  6. The High Performance Storage System

    SciTech Connect (OSTI)

    Coyne, R.A.; Hulen, H. [IBM Federal Systems Co., Houston, TX (United States); Watson, R. [Lawrence Livermore National Lab., CA (United States)

    1993-09-01T23:59:59.000Z

    The National Storage Laboratory (NSL) was organized to develop, demonstrate and commercialize technology for the storage system that will be the future repositories for our national information assets. Within the NSL four Department of Energy laboratories and IBM Federal System Company have pooled their resources to develop an entirely new High Performance Storage System (HPSS). The HPSS project concentrates on scalable parallel storage system for highly parallel computers as well as traditional supercomputers and workstation clusters. Concentrating on meeting the high end of storage system and data management requirements, HPSS is designed using network-connected storage devices to transfer data at rates of 100 million bytes per second and beyond. The resulting products will be portable to many vendor`s platforms. The three year project is targeted to be complete in 1995. This paper provides an overview of the requirements, design issues, and architecture of HPSS, as well as a description of the distributed, multi-organization industry and national laboratory HPSS project.

  7. Thermal analysis of adsorptive natural gas storages during dynamic charge phase at room temperature

    SciTech Connect (OSTI)

    Ridha, Firas N.; Yunus, Rosli M.; Rashid, Mohd. [Department of Chemical Engineering, University of Technology Malaysia, 81310 UTM, Skudai, Johor (Malaysia); Ismail, Ahmad F. [Department of Gas Engineering, University of Technology Malaysia, 81310 UTM, Skudai, Johor (Malaysia)

    2007-10-15T23:59:59.000Z

    The thermal behavior of an adsorptive natural gas (ANG) vessel pressurized continuously with light hydrocarbon gases and their mixture at 27 C was analyzed using two different activated carbons. Activated carbon AC-L showed better isothermal storage capacity than AC-D due to its sufficient porous structure. However, higher adsorption capacity claimed more extreme thermal fluctuation represented by a temperature rise of 99.2 C at the center region of the bed charged continuously with methane at 1 L min{sup -1} up to pressure of 4 MPa, corresponding to 82.5 C in AC-D bed. Higher charge rate of 5 L min{sup -1} claimed severer thermal fluctuation of 116 C in AC-L/methane system calling for a serious reduction of 26.9% in the dynamic storage capacity with respect to the isothermal storage capacity. This reduction brought the storage system to a working pressure of about 2.5 MPa rather than the desired working pressure of {proportional_to}4 MPa (about 40% reduction in storage pressure). The severest temperature rise was at the center region caused by bed poor thermal conductivity leading to limited heat transfer. High ethane and propane portions in natural gas may contribute to the thermal fluctuation of the storage system as their heats of adsorption are higher than that for methane. (author)

  8. Thermal Modeling of NUHOMS HSM-15 and HSM-1 Storage Modules at Calvert Cliffs Nuclear Power Station ISFSI

    SciTech Connect (OSTI)

    Suffield, Sarah R.; Fort, James A.; Adkins, Harold E.; Cuta, Judith M.; Collins, Brian A.; Siciliano, Edward R.

    2012-10-01T23:59:59.000Z

    As part of the Used Fuel Disposition Campaign of the Department of Energy (DOE), visual inspections and temperature measurements were performed on two storage modules in the Calvert Cliffs Nuclear Power Station’s Independent Spent Fuel Storage Installation (ISFSI). Detailed thermal models models were developed to obtain realistic temperature predictions for actual storage systems, in contrast to conservative and bounding design basis calculations.

  9. Storage and Retrieval of Thermal Light in Warm Atomic Vapor

    E-Print Network [OSTI]

    Young-Wook Cho; Yoon-Ho Kim

    2010-07-12T23:59:59.000Z

    We report slowed propagation and storage and retrieval of thermal light in warm rubidium vapor using the effect of electromagnetically-induced transparency (EIT). We first demonstrate slowed-propagation of the probe thermal light beam through an EIT medium by measuring the second-order correlation function of the light field using the Hanbury-Brown$-$Twiss interferometer. We also report an experimental study on the effect of the EIT slow-light medium on the temporal coherence of thermal light. Finally, we demonstrate the storage and retrieval of thermal light beam in the EIT medium. The direct measurement of the photon number statistics of the retrieved light field shows that the photon number statistics is preserved during the storage and retrieval process.

  10. Aquifer thermal energy storage reference manual: seasonal thermal energy storage program

    SciTech Connect (OSTI)

    Prater, L.S.

    1980-01-01T23:59:59.000Z

    This is the reference manual of the Seasonal Thermal Energy Storage (STES) Program, and is the primary document for the transfer of technical information of the STES Program. It has been issued in preliminary form and will be updated periodically to include more technical data and results of research. As the program progresses and new technical data become available, sections of the manual will be revised to incorporate these data. This primary document contains summaries of: the TRW, incorporated demonstration project at Behtel, Alaska, Dames and Moore demonstration project at Stony Brook, New York, and the University of Minnesota demonstration project at Minneapolis-St. Paul, Minnesota; the technical support programs including legal/institutional assessment; economic assessment; environmental assessment; field test facilities; a compendia of existing information; numerical simulation; and non-aquifer STES concepts. (LCL)

  11. THEORETICAL STUDIES IN LONG-TERM THERMAL ENERGY STORAGE IN AQUIFERS

    E-Print Network [OSTI]

    Tsang, C.F.

    2013-01-01T23:59:59.000Z

    ~Symposium, "Thermal Storage of Solar Energy 11 , Amsterdam,TNO~Symposium "Thermal Storage of Solar Energy" 5~6 NovemberSolar Energy, Office of Advanced Conservation Technology, Division of Thermal

  12. Sandia National Laboratories: DOE Energy Storage Systems program

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

    DOE Energy Storage Systems program 2013 Electricity Storage Handbook Published On July 31, 2013, in Energy, Energy Assurance, Energy Storage, Energy Storage Systems, Energy Surety,...

  13. Sandia National Laboratories: solar thermal storage

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

    Received Entrepreneurial Spirit Awards On April 3, 2013, in Concentrating Solar Power, Energy, Facilities, National Solar Thermal Test Facility, News, News & Events, Renewable...

  14. Dish Stirling High Performance Thermal Storage

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

    National Laboratories Amir Faghri, University of Connecticut Judith Gomez, NREL National Solar Thermal Test Facility: World Class Capabilities at Your Service Testing 5MW...

  15. Electrochemical hydrogen Storage Systems

    SciTech Connect (OSTI)

    Dr. Digby Macdonald

    2010-08-09T23:59:59.000Z

    As the global need for energy increases, scientists and engineers have found a possible solution by using hydrogen to power our world. Although hydrogen can be combusted as a fuel, it is considered an energy carrier for use in fuel cells wherein it is consumed (oxidized) without the production of greenhouse gases and produces electrical energy with high efficiency. Chemical storage of hydrogen involves release of hydrogen in a controlled manner from materials in which the hydrogen is covalently bound. Sodium borohydride and aminoborane are two materials given consideration as chemical hydrogen storage materials by the US Department of Energy. A very significant barrier to adoption of these materials as hydrogen carriers is their regeneration from 'spent fuel,' i.e., the material remaining after discharge of hydrogen. The U.S. Department of Energy (DOE) formed a Center of Excellence for Chemical Hydrogen Storage, and this work stems from that project. The DOE has identified boron hydrides as being the main compounds of interest as hydrogen storage materials. The various boron hydrides are then oxidized to release their hydrogen, thereby forming a 'spent fuel' in the form of a lower boron hydride or even a boron oxide. The ultimate goal of this project is to take the oxidized boron hydrides as the spent fuel and hydrogenate them back to their original form so they can be used again as a fuel. Thus this research is essentially a boron hydride recycling project. In this report, research directed at regeneration of sodium borohydride and aminoborane is described. For sodium borohydride, electrochemical reduction of boric acid and sodium metaborate (representing spent fuel) in alkaline, aqueous solution has been investigated. Similarly to literature reports (primarily patents), a variety of cathode materials were tried in these experiments. Additionally, approaches directed at overcoming electrostatic repulsion of borate anion from the cathode, not described in the previous literature for electrochemical reduction of spent fuels, have been attempted. A quantitative analytical method for measuring the concentration of sodium borohydride in alkaline aqueous solution has been developed as part of this work and is described herein. Finally, findings from stability tests for sodium borohydride in aqueous solutions of several different compositions are reported. For aminoborane, other research institutes have developed regeneration schemes involving tributyltin hydride. In this report, electrochemical reduction experiments attempting to regenerate tributyltin hydride from tributyltin chloride (a representative by-product of the regeneration scheme) are described. These experiments were performed in the non-aqueous solvents acetonitrile and 1,2-dimethoxyethane. A non-aqueous reference electrode for electrolysis experiments in acetonitrile was developed and is described. One class of boron hydrides, called polyhedral boranes, became of interest to the DOE due to their ability to contain a sufficient amount of hydrogen to meet program goals and because of their physical and chemical safety attributes. Unfortunately, the research performed here has shown that polyhedral boranes do not react in such a way as to allow enough hydrogen to be released, nor do they appear to undergo hydrogenation from the spent fuel form back to the original hydride. After the polyhedral boranes were investigated, the project goals remained the same but the hydrogen storage material was switched by the DOE to ammonia borane. Ammonia borane was found to undergo an irreversible hydrogen release process, so a direct hydrogenation was not able to occur. To achieve the hydrogenation of the spent ammonia borane fuel, an indirect hydrogenation reaction is possible by using compounds called organotin hydrides. In this process, the organotin hydrides will hydrogenate the spent ammonia borane fuel at the cost of their own oxidation, which forms organotin halides. To enable a closed-loop cycle, our task was then to be able to hydrogenate the organotin halides back to th

  16. Advanced Thermal Storage for Central Receivers with Supercritical Coolants

    SciTech Connect (OSTI)

    Kelly, Bruce D.

    2010-06-15T23:59:59.000Z

    The principal objective of the study is to determine if supercritical heat transport fluids in a central receiver power plant, in combination with ceramic thermocline storage systems, offer a reduction in levelized energy cost over a baseline nitrate salt concept. The baseline concept uses a nitrate salt receiver, two-tank (hot and cold) nitrate salt thermal storage, and a subcritical Rankine cycle. A total of 6 plant designs were analyzed, as follows: Plant Designation Receiver Fluid Thermal Storage Rankine Cycle Subcritical nitrate salt Nitrate salt Two tank nitrate salt Subcritical Supercritical nitrate salt Nitrate salt Two tank nitrate salt Supercritical Low temperature H2O Supercritical H2O Two tank nitrate salt Supercritical High temperature H2O Supercritical H2O Packed bed thermocline Supercritical Low temperature CO2 Supercritical CO2 Two tank nitrate salt Supercritical High temperature CO2 Supercritical CO2 Packed bed thermocline Supercritical Several conclusions have been drawn from the results of the study, as follows: 1) The use of supercritical H2O as the heat transport fluid in a packed bed thermocline is likely not a practical approach. The specific heat of the fluid is a strong function of the temperatures at values near 400 °C, and the temperature profile in the bed during a charging cycle is markedly different than the profile during a discharging cycle. 2) The use of supercritical CO2 as the heat transport fluid in a packed bed thermocline is judged to be technically feasible. Nonetheless, the high operating pressures for the supercritical fluid require the use of pressure vessels to contain the storage inventory. The unit cost of the two-tank nitrate salt system is approximately $24/kWht, while the unit cost of the high pressure thermocline system is nominally 10 times as high. 3) For the supercritical fluids, the outer crown temperatures of the receiver tubes are in the range of 700 to 800 °C. At temperatures of 700 °C and above, intermetallic compounds can precipitate between, and within, the grains of nickel alloys. The precipitation leads to an increase in tensile strength, and a decrease in ductility. Whether the proposed tube materials can provide the required low cycle fatigue life for the supercritical H2O and CO2 receivers is an open question. 4) A ranking of the plants, in descending order of technical and economic feasibility, is as follows: i) Supercritical nitrate salt and baseline nitrate salt: equal ratings ii) Low temperature supercritical H2O iii) Low temperature supercritical CO2 iv) High temperature supercritical CO2 v) High temperature supercritical H2O 5) The two-tank nitrate salt thermal storage systems are strongly preferred over the thermocline systems using supercritical heat transport fluids.

  17. Micro/Nano-Scale Phase Change Systems for Thermal Management and Solar Energy Conversion Applications

    E-Print Network [OSTI]

    Coso, Dusan

    2013-01-01T23:59:59.000Z

    Storage of Solar Thermal Energy,” Solar Energy, 18 (3), pp.Nocera D. G. , 2010, “Solar Energy Supply and Storage forof Abiotic Photo-chemical Solar Energy Storage Systems,”

  18. Nuclear Hybrid Energy Systems: Molten Salt Energy Storage

    SciTech Connect (OSTI)

    P. Sabharwall; M. Green; S.J. Yoon; S.M. Bragg-Sitton; C. Stoots

    2014-07-01T23:59:59.000Z

    With growing concerns in the production of reliable energy sources, the next generation in reliable power generation, hybrid energy systems, are being developed to stabilize these growing energy needs. The hybrid energy system incorporates multiple inputs and multiple outputs. The vitality and efficiency of these systems resides in the energy storage application. Energy storage is necessary for grid stabilizing and storing the overproduction of energy to meet peak demands of energy at the time of need. With high thermal energy production of the primary nuclear heat generation source, molten salt energy storage is an intriguing option because of its distinct properties. This paper will discuss the different energy storage options with the criteria for efficient energy storage set forth, and will primarily focus on different molten salt energy storage system options through a thermodynamic analysis

  19. Integrated Building Energy Systems Design Considering Storage Technologies

    E-Print Network [OSTI]

    Stadler, Michael

    2009-01-01T23:59:59.000Z

    could be acquired, e.g. battery storage, the costs for whichlead/acid battery, and thermal storage, capabilities, witha) thermal storage 8 IV) flow battery V) absorption chiller

  20. Legal and regulatory issues affecting aquifer thermal energy storage

    SciTech Connect (OSTI)

    Hendrickson, P.L.

    1981-10-01T23:59:59.000Z

    This document updates and expands the report with a similar title issued in October 1980. This document examines a number of legal and regulatory issues that potentially can affect implementation of the aquifer thermal energy storage (ATES) concept. This concept involves the storage of thermal energy in an underground aquifer until a later date when it can be effectively utilized. Either heat energy or chill can be stored. Potential end uses of the energy include district space heating and cooling, industrial process applications, and use in agriculture or aquaculture. Issues are examined in four categories: regulatory requirements, property rights, potential liability, and issues related to heat or chill delivery.

  1. Thermal Modeling and Analysis of Storage Systems Xunfei Jiang, Mohammed I. Alghamdi, Ji Zhang, Maen Al Assaf, Xiaojun Ruan, Tausif Muzaffar, and Xiao Qin

    E-Print Network [OSTI]

    Qin, Xiao

    systems' temperature on cooling costs of data centers, 3) the growing importance of reducing thermal the energy efficiency of data centers [17][26]. For instance, energy cost of cooling systems in data centers@wcupa.edu Abstract--Recognizing that power and cooling cost for data centers are increasing, we address in this study

  2. Hydrogen storage and generation system

    DOE Patents [OSTI]

    Dentinger, Paul M. (Sunol, CA); Crowell, Jeffrey A. W. (Castro Valley, CA)

    2010-08-24T23:59:59.000Z

    A system for storing and generating hydrogen generally and, in particular, a system for storing and generating hydrogen for use in an H.sub.2/O.sub.2 fuel cell. The hydrogen storage system uses the beta particles from a beta particle emitting material to degrade an organic polymer material to release substantially pure hydrogen. In a preferred embodiment of the invention, beta particles from .sup.63Ni are used to release hydrogen from linear polyethylene.

  3. Phase Change Materials for Thermal Energy Storage in Concentrated Solar Thermal Power Plants

    E-Print Network [OSTI]

    Hardin, Corey Lee

    2011-01-01T23:59:59.000Z

    demonstrated how well a molten salt thermal storage systembased CSP plant. Cold molten salt is pumped from a largetemperature and send to a hot molten salt tank. Salt is then

  4. Review of simulation techniques for aquifer thermal energy storage (ATES)

    SciTech Connect (OSTI)

    Mercer, J.W.; Faust, C.R.; Miller, W.J.; Pearson, F.J. Jr.

    1981-03-01T23:59:59.000Z

    The storage of thermal energy in aquifers has recently received considerable attention as a means to conserve and more efficiently use energy supplies. The analysis of aquifer thermal energy storage (ATES) systems will rely on the results from mathematical and geochemical models. Therefore, the state-of-the-art models relevant to ATES was reviewed and evaluated. These models describe important processes active in ATES including ground-water flow, heat transport (heat flow), solute transport (movement of contaminants), and geochemical reactions. In general, available models of the saturated ground-water environment are adequate to address most concerns associated with ATES; that is, design, operation, and environmental assessment. In those cases where models are not adequate, development should be preceded by efforts to identify significant physical phenomena and relate model parameters to measurable quantities. Model development can then proceed with the expectation of an adequate data base existing for the model's eventual use. Review of model applications to ATES shows that the major emphasis has been on generic sensitivity analysis and site characterization. Assuming that models are applied appropriately, the primary limitation on model calculations is the data base used to construct the model. Numerical transport models are limited by the uncertainty of subsurface data and the lack of long-term historical data for calibration. Geochemical models are limited by the lack of thermodynamic data for the temperature ranges applicable to ATES. Model applications undertaken with data collection activities on ATES sites should provide the most important contributions to the understanding and utilization of ATES. Therefore, the primary conclusion of this review is that model application to field sites in conjunction with data collection activities is essential to the development of this technology.

  5. Thermal Insulation Systems

    E-Print Network [OSTI]

    Stanley, T. F.

    1982-01-01T23:59:59.000Z

    Thermal insulation systems are receiving a high degree of attention in view of increasing energy cost. Industrial, commercial and residential energy users are all well aware of energy cost increases and great emphasis is being directed to energy...

  6. Modeling of thermal energy storage in groundwater aquifers

    E-Print Network [OSTI]

    Reed, David Bryan

    1979-01-01T23:59:59.000Z

    , nuclear fission, fusion, geo- thermal energy, and solar energy as potential alternate energy sources to replace natural gas and oil. Of these, soIar energy is one of the most promisino alternate energy sources for space heating and cooling. Solar...MODELING OF THERMAL ENERGY STORAGE IN GROUNDWATER AQUIFERS A Thesis by DAVID BRYAN REED Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE December 1979...

  7. STP-ECRTS - THERMAL AND GAS ANALYSES FOR SLUDGE TRANSPORT AND STORAGE CONTAINER (STSC) STORAGE AT T PLANT

    SciTech Connect (OSTI)

    CROWE RD; APTHORPE R; LEE SJ; PLYS MG

    2010-04-29T23:59:59.000Z

    The Sludge Treatment Project (STP) is responsible for the disposition of sludge contained in the six engineered containers and Settler tank within the 105-K West (KW) Basin. The STP is retrieving and transferring sludge from the Settler tank into engineered container SCS-CON-230. Then, the STP will retrieve and transfer sludge from the six engineered containers in the KW Basin directly into a Sludge Transport and Storage Containers (STSC) contained in a Sludge Transport System (STS) cask. The STSC/STS cask will be transported to T Plant for interim storage of the STSC. The STS cask will be loaded with an empty STSC and returned to the KW Basin for loading of additional sludge for transportation and interim storage at T Plant. CH2MHILL Plateau Remediation Company (CHPRC) contracted with Fauske & Associates, LLC (FAI) to perform thermal and gas generation analyses for interim storage of STP sludge in the Sludge Transport and Storage Container (STSCs) at T Plant. The sludge types considered are settler sludge and sludge originating from the floor of the KW Basin and stored in containers 210 and 220, which are bounding compositions. The conditions specified by CHPRC for analysis are provided in Section 5. The FAI report (FAI/10-83, Thermal and Gas Analyses for a Sludge Transport and Storage Container (STSC) at T Plant) (refer to Attachment 1) documents the analyses. The process considered was passive, interim storage of sludge in various cells at T Plant. The FATE{trademark} code is used for the calculation. The results are shown in terms of the peak sludge temperature and hydrogen concentrations in the STSC and the T Plant cell. In particular, the concerns addressed were the thermal stability of the sludge and the potential for flammable gas mixtures. This work was performed with preliminary design information and a preliminary software configuration.

  8. Phase change thermal energy storage material

    DOE Patents [OSTI]

    Benson, David K. (Golden, CO); Burrows, Richard W. (Conifer, CO)

    1987-01-01T23:59:59.000Z

    A thermal energy storge composition is disclosed. The composition comprises a non-chloride hydrate having a phase change transition temperature in the range of 70.degree.-95.degree. F. and a latent heat of transformation of at least about 35 calories/gram.

  9. Thermal performance measurements of insulated roof systems

    SciTech Connect (OSTI)

    Courville, G.E.; Childs, K.W.; Walukas, D.J.; Childs, P.W.; Griggs, E.I.

    1985-01-01T23:59:59.000Z

    Oak Ridge National Laboratory has established a Roof Thermal Researcch Apparatus for carrying out thermal and hygric experiments on sections of low-sloped roofs. Test panels are exposed to a controlled temperature interior space and to the prevailing East Tennessee exterior environment. They are well instrumented and all data are stored and aided in the analysis by computer systems. Current experiments include studies of the effect of wet insulation on membrane temperature, thermal storage phenomena in built-up roof insulation, and the effects of varying surface reflectance on roof thermal performance.

  10. Enterprise Storage Management System Dan Glasser1

    E-Print Network [OSTI]

    Fayad, Mohamed

    Enterprise Storage Management System Dan Glasser1 , Madeline Hardojo1 , Anand Sundaram1 , Nate.fayad@sjsu.edu Abstract: Enterprise Storage Management System is an interactive and user-friendly program that will enable the Lincoln Telephone Company to efficiently manage their storage system. With this system, the Lincoln

  11. Thermal Storage Applications for Commercial/Industrial Facilities

    E-Print Network [OSTI]

    Knipp, R. L.

    of the future may yet en courage such unique designs. For more information: Richard N. Poirier CBI Industries (815) 436-2912 I'it,jure 7 CASCADED CARBONDIOXIDE THERMAL STORAGE llYSTEM TRIPLE POINT OF CO2 (60 PSIG) (-7Oo...

  12. Energy Storage Systems 2010 Update Conference Presentations ...

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

    4 Energy Storage Systems 2010 Update Conference Presentations - Day 1, Session 4 The U.S. DOE Energy Storage Systems Program (ESS) conducted a record-breaking Update Conference at...

  13. Energy Storage Systems 2010 Update Conference Presentations ...

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

    3 Energy Storage Systems 2010 Update Conference Presentations - Day 2, Session 3 The U.S. DOE Energy Storage Systems Program (ESS) conducted a record-breaking Update Conference at...

  14. Energy Storage Systems 2010 Update Conference Presentations ...

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

    2 Energy Storage Systems 2010 Update Conference Presentations - Day 3, Session 2 The U.S. DOE Energy Storage Systems Program (ESS) conducted a record-breaking Update Conference at...

  15. Energy Storage Systems 2010 Update Conference Presentations ...

    Office of Environmental Management (EM)

    1 Energy Storage Systems 2010 Update Conference Presentations - Day 3, Session 1 The U.S. DOE Energy Storage Systems Program (ESS) conducted a record-breaking Update Conference at...

  16. Energy Storage Systems 2010 Update Conference Presentations ...

    Office of Environmental Management (EM)

    2 Energy Storage Systems 2010 Update Conference Presentations - Day 2, Session 2 The U.S. DOE Energy Storage Systems Program (ESS) conducted a record-breaking Update Conference at...

  17. Energy Storage Systems 2010 Update Conference Presentations ...

    Office of Environmental Management (EM)

    2 Energy Storage Systems 2010 Update Conference Presentations - Day 1, Session 2 The U.S. DOE Energy Storage Systems Program (ESS) conducted a record-breaking Update Conference at...

  18. Energy Storage Systems 2010 Update Conference Presentations ...

    Office of Environmental Management (EM)

    3 Energy Storage Systems 2010 Update Conference Presentations - Day 3, Session 3 The U.S. DOE Energy Storage Systems Program (ESS) conducted a record-breaking Update Conference at...

  19. Energy Storage Systems 2010 Update Conference Presentations ...

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

    3 Energy Storage Systems 2010 Update Conference Presentations - Day 1, Session 3 The U.S. DOE Energy Storage Systems Program (ESS) conducted a record-breaking Update Conference at...

  20. Cost Analysis of Hydrogen Storage Systems

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

    Cost Analysis of Hydrogen Cost Analysis of Hydrogen Storage Systems Storage Systems TIAX LLC 15 Acorn Park Cambridge, MA 02140-2390 Tel. 617- 498-5000 Fax 617-498-7200...

  1. Dynamic modeling and control strategies for a micro-CSP plant with thermal storage powered by the Organic Rankine cycle

    E-Print Network [OSTI]

    Ireland, Melissa Kara

    2014-01-01T23:59:59.000Z

    Organic Rankine cycle (ORC) systems are gaining ground as a means of effectively providing sustainable energy. Coupling small-scale ORCs powered by scroll expander- generators with solar thermal collectors and storage can ...

  2. Multilayer thermal barrier coating systems

    DOE Patents [OSTI]

    Vance, Steven J. (Orlando, FL); Goedjen, John G. (Oviedo, FL); Sabol, Stephen M. (Orlando, FL); Sloan, Kelly M. (Longwood, FL)

    2000-01-01T23:59:59.000Z

    The present invention generally describes multilayer thermal barrier coating systems and methods of making the multilayer thermal barrier coating systems. The thermal barrier coating systems comprise a first ceramic layer, a second ceramic layer, a thermally grown oxide layer, a metallic bond coating layer and a substrate. The thermal barrier coating systems have improved high temperature thermal and chemical stability for use in gas turbine applications.

  3. Transient-heat-transfer and stress analysis of a thermal-storage solar cooker module

    E-Print Network [OSTI]

    Zengeni, Hazel C

    2014-01-01T23:59:59.000Z

    This paper details the analysis carried out in Solidworks to determine the best material and configuration of a thermal-storage solar cooker module.The thermal-storage solar cooker utilizes the high-latent-heat lithium ...

  4. Cool Trends in District Energy: A Survey of Thermal Energy Storage...

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

    in District Energy: A Survey of Thermal Energy Storage Use in District Energy Utility Applications, June 2005 Cool Trends in District Energy: A Survey of Thermal Energy Storage Use...

  5. Effect of Thermal Aging on NO oxidation and NOx storage in a...

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

    Thermal Aging on NO oxidation and NOx storage in a Fully-Formulated Lean NOx Trap Effect of Thermal Aging on NO oxidation and NOx storage in a Fully-Formulated Lean NOx Trap...

  6. Distributed Energy Resources On-Site Optimization for Commercial Buildings with Electric and Thermal Storage Technologies

    E-Print Network [OSTI]

    Stadler, Michael

    2008-01-01T23:59:59.000Z

    could be acquired, e.g. battery storage, the costs for whichlead/acid battery, and thermal storage, capabilities, withis limited by battery size - Heat storage is limited by

  7. Relationship of regional water quality to aquifer thermal energy storage

    SciTech Connect (OSTI)

    Allen, R.D.

    1983-11-01T23:59:59.000Z

    Ground-water quality and associated geologic characteristics may affect the feasibility of aquifer thermal energy storage (ATES) system development in any hydrologic region. This study sought to determine the relationship between ground-water quality parameters and the regional potential for ATES system development. Information was collected from available literature to identify chemical and physical mechanisms that could adversely affect an ATES system. Appropriate beneficiation techniques to counter these potential geochemical and lithologic problems were also identified through the literature search. Regional hydrology summaries and other sources were used in reviewing aquifers of 19 drainage regions in the US to determine generic geochemical characteristics for analysis. Numerical modeling techniques were used to perform geochemical analyses of water quality from 67 selected aquifers. Candidate water resources regions were then identified for exploration and development of ATES. This study identified six principal mechanisms by which ATES reservoir permeability may be impaired: (1) particulate plugging, (2) chemical precipitation, (3) liquid-solid reactions, (4) formation disaggregation, (5) oxidation reactions, and (6) biological activity. Specific proven countermeasures to reduce or eliminate these effects were found. Of the hydrologic regions reviewed, 10 were identified as having the characteristics necessary for ATES development: (1) Mid-Atlantic, (2) South-Atlantic Gulf, (3) Ohio, (4) Upper Mississippi, (5) Lower Mississippi, (6) Souris-Red-Rainy, (7) Missouri Basin, (8) Arkansas-White-Red, (9) Texas-Gulf, and (10) California.

  8. Sandia Energy - Energy Storage Systems

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiationImplementing Nonlinear757 (1)Tara46Energy Storage Systems Permalink Gallery

  9. Thermal Energy Storage/Waste Heat Recovery Applications in the Cement Industry

    E-Print Network [OSTI]

    Beshore, D. G.; Jaeger, F. A.; Gartner, E. M.

    1979-01-01T23:59:59.000Z

    , and the Portland Cement Association have studied the potential benefits of using waste heat recovery methods and thermal energy storage systems in the cement manufacturing process. This work was performed under DOE Contract No. EC-77-C-01-50S4. The study has been...

  10. Thermal Energy Storage at a Federal Facility

    SciTech Connect (OSTI)

    Not Available

    2000-07-01T23:59:59.000Z

    Utility partnership upgrades energy system to help meet the General Services Administration's (GSA) energy-saving goals

  11. Exhaust system with emissions storage device and plasma reactor

    DOE Patents [OSTI]

    Hoard, John W. (Livonia, MI)

    1998-01-01T23:59:59.000Z

    An exhaust system for a combustion system, comprising a storage device for collecting NO.sub.x, hydrocarbon, or particulate emissions, or mixture of these emissions, and a plasma reactor for destroying the collected emissions is described. After the emission is collected in by the storage device for a period of time, the emission is then destroyed in a non-thermal plasma generated by the plasma reactor. With respect to the direction of flow of the exhaust stream, the storage device must be located before the terminus of the plasma reactor, and it may be located wholly before, overlap with, or be contained within the plasma reactor.

  12. Novel Molten Salts Thermal Energy Storage for Concentrating Solar Power Generation

    SciTech Connect (OSTI)

    Reddy, Ramana G. [The University of Alabama] [The University of Alabama

    2013-10-23T23:59:59.000Z

    The explicit UA program objective is to develop low melting point (LMP) molten salt thermal energy storage media with high thermal energy storage density for sensible heat storage systems. The novel Low Melting Point (LMP) molten salts are targeted to have the following characteristics: 1. Lower melting point (MP) compared to current salts (<222şC) 2. Higher energy density compared to current salts (>300 MJ/m3) 3. Lower power generation cost compared to current salt In terms of lower power costs, the program target the DOE's Solar Energy Technologies Program year 2020 goal to create systems that have the potential to reduce the cost of Thermal Energy Storage (TES) to less than $15/kWh-th and achieve round trip efficiencies greater than 93%. The project has completed the experimental investigations to determine the thermo-physical, long term thermal stability properties of the LMP molten salts and also corrosion studies of stainless steel in the candidate LMP molten salts. Heat transfer and fluid dynamics modeling have been conducted to identify heat transfer geometry and relative costs for TES systems that would utilize the primary LMP molten salt candidates. The project also proposes heat transfer geometry with relevant modifications to suit the usage of our molten salts as thermal energy storage and heat transfer fluids. The essential properties of the down-selected novel LMP molten salts to be considered for thermal storage in solar energy applications were experimentally determined, including melting point, heat capacity, thermal stability, density, viscosity, thermal conductivity, vapor pressure, and corrosion resistance of SS 316. The thermodynamic modeling was conducted to determine potential high temperature stable molten salt mixtures that have thermal stability up to 1000 °C. The thermo-physical properties of select potential high temperature stable (HMP) molten salt mixtures were also experimentally determined. All the salt mixtures align with the go/no-go goals stipulated by the DOE for this project. Energy densities of all salt mixtures were higher than that of the current solar salt. The salt mixtures costs have been estimated and TES system costs for a 2 tank, direct approach have been estimated for each of these materials. All estimated costs are significantly below the baseline system that used solar salt. These lower melt point salts offer significantly higher energy density per volume than solar salt – and therefore attractively smaller inventory and equipment costs. Moreover, a new TES system geometry has been recommended A variety of approaches were evaluated to use the low melting point molten salt. Two novel changes are recommended that 1) use the salt as a HTF through the solar trough field, and 2) use the salt to not only create steam but also to preheat the condensed feedwater for Rankine cycle. The two changes enable the powerblock to operate at 500°C, rather than the current 400°C obtainable using oil as the HTF. Secondly, the use of salt to preheat the feedwater eliminates the need to extract steam from the low pressure turbine for that purpose. Together, these changes result in a dramatic 63% reduction required for 6 hour salt inventory, a 72% reduction in storage volume, and a 24% reduction in steam flow rate in the power block. Round trip efficiency for the Case 5 - 2 tank “direct” system is estimated at >97%, with only small losses from time under storage and heat exchange, and meeting RFP goals. This attractive efficiency is available because the major heat loss experienced in a 2 tank “indirect” system - losses by transferring the thermal energy from oil HTF to the salt storage material and back to oil to run the steam generator at night - is not present for the 2 tank direct system. The higher heat capacity values for both LMP and HMP systems enable larger storage capacities for concentrating solar power.

  13. AQUIFER THERMAL ENERGY STORAGE-A SURVEY

    E-Print Network [OSTI]

    Tsang, Chin Fu

    2012-01-01T23:59:59.000Z

    of Technical and economic evaluation' of methods; sitefrom economic and systems analyses to evaluation and designeconomic, and environmental analyses, regional exploration to locate favorable sites, and evaluation

  14. AQUIFER THERMAL ENERGY STORAGE-A SURVEY

    E-Print Network [OSTI]

    Tsang, Chin Fu

    2012-01-01T23:59:59.000Z

    baseload power and oil-fired boilers for peak and standbyoil-fired boilers used in the conventional system as a backup, and to meet peak

  15. Thermal Systems Process and Components Laboratory (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2011-10-01T23:59:59.000Z

    This fact sheet describes the purpose, lab specifications, applications scenarios, and information on how to partner with NREL's Thermal Systems Process and Components Laboratory at the Energy Systems Integration Facility. The focus of the Thermal Systems Process and Components Laboratory at NREL's Energy Systems Integration Facility (ESIF) is to research, develop, test, and evaluate new techniques for thermal energy storage systems that are relevant to utility-scale concentrating solar power plants. The laboratory holds test systems that can provide heat transfer fluids for the evaluation of heat exchangers and thermal energy storage devices. The existing system provides molten salt at temperatures up to 800 C. This unit is charged with nitrate salt rated to 600 C, but is capable of handling other heat transfer fluid compositions. Three additional test bays are available for future deployment of alternative heat transfer fluids such as hot air, carbon dioxide, or steam systems. The Thermal Systems Process and Components Laboratory performs pilot-scale thermal energy storage system testing through multiple charge and discharge cycles to evaluate heat exchanger performance and storage efficiency. The laboratory equipment can also be utilized to test instrument and sensor compatibility with hot heat transfer fluids. Future applications in the laboratory may include the evaluation of thermal energy storage systems designed to operate with supercritical heat transfer fluids such as steam or carbon dioxide. These tests will require the installation of test systems capable of providing supercritical fluids at temperatures up to 700 C.

  16. Efficient Management of Idleness in Storage Systems

    E-Print Network [OSTI]

    Smirni, Evgenia

    -off between the performance of fore- ground and background tasks. As a result, the storage system is better4 Efficient Management of Idleness in Storage Systems NINGFANG MI College of William and Mary ALMA of storage sys- tems are scheduled with low priority and served during idle times. Under such conditions

  17. THERMAL ENERGY STORAGE IN AQUIFERS WORKSHOP

    E-Print Network [OSTI]

    Authors, Various

    2011-01-01T23:59:59.000Z

    III, "Man-made Geothermal Energy," presented at MiamiA.C.Meyers III; "Manmade Geothermal Energy", Proc. of MiamiBlack is director of Geothermal Energy Systems, Fox Parry is

  18. AQUIFER THERMAL ENERGY STORAGE-A SURVEY

    E-Print Network [OSTI]

    Tsang, Chin Fu

    2012-01-01T23:59:59.000Z

    In Switzerland, district heating accounts for 50% of totalproposed hot-water district heating system in the St. Paul/an industrial in a district heating Washington Market and

  19. Thermal Modeling Studies for Active Storage Modules in the Calvert Cliffs ISFSI

    SciTech Connect (OSTI)

    Adkins, Harold E.; Fort, James A.; Suffield, Sarah R.; Cuta, Judith M.; Collins, Brian A.

    2013-06-14T23:59:59.000Z

    Temperature measurements obtained for two storage modules in the Calvert Cliffs Nuclear Power Station’s Independent Spent Fuel Storage Installation (ISFSI) as part of the Used Fuel Disposition Campaign of the Department of Energy (DOE) were used to perform validation and sensitivity studies on detailed computational fluid dynamics (CFD) models of the concrete storage modules, including the dry storage canister within the modules. The storage modules in the Calvert Cliffs Nuclear Power Station’s ISFSI are a site-specific version of the standard NUHOMS® HSM. The two modules inspected each contained a 24P DSC loaded with 24 CE 14x14 spent fuel assemblies. The thermal analysis was performed using the STAR-CCM+ package, and the models developed for the specific ISFSI modules yielded temperature predictions in actual storage conditions for the concrete structure, the DSC and its contents, including preliminary estimates of fuel cladding temperatures for the used nuclear fuel. The results of this work demonstrate that existing CFD modeling tools can be used to obtain reasonable and accurate detailed representations of spent fuel storage systems with realistic decay heat loadings when the model omits specific conservatisms and bounding assumptions normally used in design-basis and safety-basis calculations. This paper presents sensitivity studies on modeling detail (for the storage module and the DSC), boundary conditions, and decay heat load, to evaluate the effect of the modeling approach on predicted temperatures and temperature distributions. Because nearly all degradation mechanisms for materials and structures comprising dry storage and transportation systems are dependent on temperature, accurate characterization of local temperatures and temperature gradients that the various components of these systems will experience over the entire storage period has been identified as a primary requirement for evaluation of very long term storage of used nuclear fuel.

  20. The Added Economic and Environmental Value of Solar Thermal Systems in Microgrids with Combined Heat and Power

    E-Print Network [OSTI]

    Marnay, Chris

    2010-01-01T23:59:59.000Z

    Economic and Environmental Value of Solar Thermal Systems inEconomic and Environmental Value of Solar Thermal Systems insolar thermal and heat storage systems can improve the economic, as well as environmental

  1. Summary Report for Concentrating Solar Power Thermal Storage Workshop: New Concepts and Materials for Thermal Energy Storage and Heat-Transfer Fluids, May 20, 2011

    SciTech Connect (OSTI)

    Glatzmaier, G.

    2011-08-01T23:59:59.000Z

    This document summarizes a workshop on thermal energy storage for concentrating solar power (CSP) that was held in Golden, Colorado, on May 20, 2011. The event was hosted by the U.S. Department of Energy (DOE), the National Renewable Energy Laboratory, and Sandia National Laboratories. The objective was to engage the university and laboratory research communities to identify and define research directions for developing new high-temperature materials and systems that advance thermal energy storage for CSP technologies. This workshop was motivated, in part, by the DOE SunShot Initiative, which sets a very aggressive cost goal for CSP technologies -- a levelized cost of energy of 6 cents per kilowatt-hour by 2020 with no incentives or credits.

  2. New phase-change thermal energy storage materials for buildings

    SciTech Connect (OSTI)

    Benson, D.K.; Christensen, C.B.; Burrows, R.W.

    1985-10-01T23:59:59.000Z

    A new class of phase-change thermal energy storage materials is under development at SERI. These materials are unusual in two ways. They reversibly absorb large amounts of heat during a solid-state, crystal transformation more than 70/sup 0/C below their melting temperatures, and their solid-state transformation temperatures may be adjusted over a range from 7/sup 0/C to 188/sup 0/C by varying the ratios of binary mixtures of the components. Because these storage materials remain solid throughout the range of their service temperatures, unique opportunities exist for incorporating them into building materials. Composites have been made with ordinary, porous construction materials such as wood, gypsum board, and lightweight concrete as the matrix and with the solid-state phase change materials (SS PCM) filling the void space. The thermal storage capacities of such composites are thereby increased by more than 100% without changing the basic nature and workability of the matrix, construction material. Parametric analyses have been conducted to determine what combination of properties would be optimum for certain solar and energy conserving building applications including Trombe wall, direct gain, and distributed cool storage (combined with night ventilation).

  3. Thermal ignition combustion system

    DOE Patents [OSTI]

    Kamo, R.; Kakwani, R.M.; Valdmanis, E.; Woods, M.E.

    1988-04-19T23:59:59.000Z

    The thermal ignition combustion system comprises means for providing walls defining an ignition chamber, the walls being made of a material having a thermal conductivity greater than 20 W/m C and a specific heat greater than 480 J/kg C with the ignition chamber being in constant communication with the main combustion chamber, means for maintaining the temperature of the walls above a threshold temperature capable of causing ignition of a fuel, and means for conducting fuel to the ignition chamber. 8 figs.

  4. Thermodynamic analysis of pumped thermal electricity storage

    E-Print Network [OSTI]

    White, Alexander; Parks, Geoff; Markides, Christos N.

    2012-03-24T23:59:59.000Z

    considered in France [5]. We include a brief description of a PTES system here since it is a not widely known technology. The general principle of operation is straightforward and is illustrated in Fig. 1. The main components are a compressor (C... and compressor respectively.) The heat engine and heat pump operate on the Joule-Brayton and reverse Joule-Brayton cycles respectively, the temperature-entropy (T-s) diagram for which is shown on the right of the figure for the case of ideal (reversible...

  5. Thermal Energy Storage for Space Cooling--Federal Technology Alert

    SciTech Connect (OSTI)

    Brown, Daryl R

    2000-12-31T23:59:59.000Z

    Cool storage technology can be used to significantly reduce energy costs by allowing energy-intensive, electrically driven cooling equipment to be predominantly operated during off peak hours when electricity rates are lower. This Federal Technology Alert, which is sponsored by DOE's Federal Energy Management Program (FEMP), describes the basic types of cool storage technologies and cooling system integration options. In addition, it defines the savings potential in the federal sector, presents application advice, and describes the performance experience of specific federal users. The results of a case study of a GSA building using cool storage technology are also provided.

  6. AQUIFER THERMAL ENERGY STORAGE. A NUMERICAL SIMULATION OF AUBURN UNIVERSITY FIELD EXPERIMENTS

    E-Print Network [OSTI]

    Tsang, Chin Fu

    2013-01-01T23:59:59.000Z

    C.F. , 1980, "Aquifer Thermal Energy - Parameter Study" (infrom the Auburn University Thermal Energy Storage , LBL No.studies in aquifer thermal energy , Presented at the ~~~~~~~

  7. Reducing the Cost of Thermal Energy Storage for Parabolic Trough Solar Power Plants

    SciTech Connect (OSTI)

    Gawlik, Keith

    2013-06-25T23:59:59.000Z

    Thermal energy storage systems using phase change materials were evaluated for trough systems that use oil, steam, and high temperature salts as heat transfer fluids. A variety of eutectic salts and metal alloys were considered as phase change materials in a cascaded arrangement. Literature values of specific heat, latent heat, density, and other thermophysical properties were used in initial analyses. Testing laboratories were contracted to measure properties for candidate materials for comparison to the literature and for updating the models. A TRNSYS model from Phase 1 was further developed for optimizing the system, including a novel control algorithm. A concept for increasing the bulk thermal conductivity of the phase change system was developed using expanded metal sheets. Outside companies were contracted to design and cost systems using platecoil heat exchangers immersed in the phase change material. Laboratory evaluations of the one-dimensional and three-dimensional behavior of expanded metal sheets in a low conductivity medium were used to optimize the amount of thermal conductivity enhancement. The thermal energy storage systems were compared to baseline conventional systems. The best phase change system found in this project, which was for the high temperature plant, had a projected cost of $25.2 per kWhth, The best system also had a cost that was similar to the base case, a direct two-tank molten salt system.

  8. Integration of Storage Devices into Power Systems

    E-Print Network [OSTI]

    Integration of Storage Devices into Power Systems with Renewable Energy Sources Final Project System #12;Integration of Storage Devices into Power Systems with Renewable Energy Sources Final Project report for the Power Systems Engineering Research Center (PSERC) research project titled "Integration

  9. Short term thermal energy storage Institut fr Kernenergetik und Energiesysteme, University of Stuttgart, Stuttgart, FRG

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    477 Short term thermal energy storage A. Abhat Institut fĂĽr Kernenergetik und Energiesysteme the problem of short term thermal energy storage for low temperature solar heating applications. The techniques of sensible and latent heat storage are discussed, with particular emphasis on the latter

  10. Sandia National Laboratories: Energy Storage Systems

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

    Energy Storage Systems New Report Describes Joint Opportunities for Natural Gas and Hydrogen Fuel-Cell Vehicle Markets On March 6, 2015, in Capabilities, Center for Infrastructure...

  11. Sandia National Laboratories: Energy Storage Systems

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

    Early Career Award for Scientists and Engineers (PECASE) On July 30, 2012, in Energy, Energy Storage Systems, Infrastructure Security, News Dr. Stanley Atcitty, an energy...

  12. Quantifying the Value of CSP with Thermal Energy Storage

    Broader source: Energy.gov [DOE]

    This PowerPoint slide deck was originally presented at the SunShot Concentrating Solar Power Program Review by Paul Denholm and Mark Mehos of NREL on April 23, 2013. Entitled "Quantifying the Value of CSP with Thermal Energy Storage," the presenters seek to answer the question, "What is the addition of TES to a CSP plant actually worth?" Ultimately they conclude that CSP with TES can actually complement other variable generation sources including solar PV and act as an enabling technology to achieve higher overall penetration of renewable energy.

  13. Bibliography of the seasonal thermal energy storage library

    SciTech Connect (OSTI)

    Prater, L.S.; Casper, G.; Kawin, R.A.

    1981-08-01T23:59:59.000Z

    The Main Listing is arranged alphabetically by the last name of the first author. Each citation includes the author's name, title, publisher, publication date, and where applicable, the National Technical Information Service (NTIS) number or other document number. The number preceding each citation is the identification number for that document in the Seasonal Thermal Energy Storage (STES) Library. Occasionally, one or two alphabetic characters are added to the identification number. These alphabetic characters indicate that the document is contained in a collection of papers, such as the proceedings of a conference. An Author Index and an Identification Number Index are included. (WHK)

  14. Thermal performance sensitivity studies in support of material modeling for extended storage of used nuclear fuel

    SciTech Connect (OSTI)

    Cuta, Judith M.; Suffield, Sarah R.; Fort, James A.; Adkins, Harold E.

    2013-08-15T23:59:59.000Z

    The work reported here is an investigation of the sensitivity of component temperatures of a storage system, including fuel cladding temperatures, in response to age-related changes that could degrade the design-basis thermal behavior of the system. Three specific areas of interest were identified for this study. • degradation of the canister backfill gas from pure helium to a mixture of air and helium, resulting from postulated leakage due to stress corrosion cracking (SCC) of canister welds • changes in surface emissivity of system components, resulting from corrosion or other aging mechanisms, which could cause potentially significant changes in temperatures and temperature distributions, due to the effect on thermal radiation exchange between components • changes in fuel and basket temperatures due to changes in fuel assembly position within the basket cells in the canister The purpose of these sensitivity studies is to provide a realistic example of how changes in the physical properties or configuration of the storage system components can affect temperatures and temperature distributions. The magnitudes of these sensitivities can provide guidance for identifying appropriate modeling assumptions for thermal evaluations extending long term storage out beyond 50, 100, 200, and 300 years.

  15. Management issues for high performance storage systems

    SciTech Connect (OSTI)

    Louis, S. [Lawrence Livermore National Lab., CA (United States); Burris, R. [Oak Ridge National Lab., TN (United States)

    1995-03-01T23:59:59.000Z

    Managing distributed high-performance storage systems is complex and, although sharing common ground with traditional network and systems management, presents unique storage-related issues. Integration technologies and frameworks exist to help manage distributed network and system environments. Industry-driven consortia provide open forums where vendors and users cooperate to leverage solutions. But these new approaches to open management fall short addressing the needs of scalable, distributed storage. We discuss the motivation and requirements for storage system management (SSM) capabilities and describe how SSM manages distributed servers and storage resource objects in the High Performance Storage System (HPSS), a new storage facility for data-intensive applications and large-scale computing. Modem storage systems, such as HPSS, require many SSM capabilities, including server and resource configuration control, performance monitoring, quality of service, flexible policies, file migration, file repacking, accounting, and quotas. We present results of initial HPSS SSM development including design decisions and implementation trade-offs. We conclude with plans for follow-on work and provide storage-related recommendations for vendors and standards groups seeking enterprise-wide management solutions.

  16. Micro/Nano-Scale Phase Change Systems for Thermal Management and Solar Energy Conversion Applications

    E-Print Network [OSTI]

    Coso, Dusan

    2013-01-01T23:59:59.000Z

    on Sustainable thermal Energy Storage Technologies, Part I:2009, “Review on Thermal Energy Storage with Phase Change2002, “Survey of Thermal Energy Storage for Parabolic Trough

  17. Micro/Nano-Scale Phase Change Systems for Thermal Management and Solar Energy Conversion Applications

    E-Print Network [OSTI]

    Coso, Dusan

    2013-01-01T23:59:59.000Z

    Review on Sustainable thermal Energy Storage Technologies,D. , 2009, “Review on Thermal Energy Storage with PhaseW. , 2002, “Survey of Thermal Energy Storage for Parabolic

  18. Value of Concentrating Solar Power and Thermal Energy Storage

    SciTech Connect (OSTI)

    Sioshansi, R.; Denholm, P.

    2010-02-01T23:59:59.000Z

    This paper examines the value of concentrating solar power (CSP) and thermal energy storage (TES) in four regions in the southwestern United States. Our analysis shows that TES can increase the value of CSP by allowing more thermal energy from a CSP plant?s solar field to be used, by allowing a CSP plant to accommodate a larger solar field, and by allowing CSP generation to be shifted to hours with higher energy prices. We analyze the sensitivity of CSP value to a number of factors, including the optimization period, price and solar forecasting, ancillary service sales, capacity value and dry cooling of the CSP plant. We also discuss the value of CSP plants and TES net of capital costs.

  19. Integrated Renewable Energy and Energy Storage Systems

    E-Print Network [OSTI]

    Integrated Renewable Energy and Energy Storage Systems Prepared for the U.S. Department of Energy and Energy Storage Systems TABLE OF CONTENTS 1 Office of Electricity Delivery and Energy Reliability Under Award No. DE-FC-06NT42847 Hawai`i Distributed

  20. Contributing Storage using the Transparent File System

    E-Print Network [OSTI]

    Berger, Emery

    Contributing Storage using the Transparent File System JAMES CIPAR and MARK D. CORNER and EMERY D barrier to the adoption of contributory storage systems is that contributing a large quantity of local--all of the currently available space-- without impacting the performance of ordinary file access operations. We show

  1. Systems considerations in capacitive energy storage

    SciTech Connect (OSTI)

    Schempp, E. [Cryo Energy Systems, Inc., Medford, MA (United States); Jackson, W.D. [HMJ Corp., Kensington, MD (United States)

    1996-12-31T23:59:59.000Z

    Capacitive energy storage systems are being developed as an alternative to SMES for utility power quality applications, to supplement batteries in electric vehicles, and other applications. Systems considerations show that the low voltages of ultra-capacitors impose a high penalty in terms of increased component count, greater complexity in the power electronics used for charging and discharging, and large IR voltage drops. The consequent dissipation and reductions in efficiency exacerbate thermal management and stresses on the power electronics. Alternative strategies using ceramic hyper-capacitors in the 800--1,500 V range will be discussed in terms of system cost and performance. A system analysis indicates that hyper-capacitors at 12 Wh/kg have higher effective energy density than ultra-capacitors at 20 Wh/kg when usable/recoverable energy, packing density, and system issues are taken into account. The power quality delivered to the load, the cost, weight, and volume of the power converters used in discharging and recharging are shown to be essential considerations. Cryogenic operation appears to offer numerous attractive performance benefits.

  2. Cool Storage Performance 

    E-Print Network [OSTI]

    Eppelheimer, D. M.

    1985-01-01T23:59:59.000Z

    Utilities have promoted the use of electric heat and thermal storage to increase off peak usage of power. High daytime demand charges and enticing discounts for off peak power have been used as economic incentives to promote thermal storage systems...

  3. Rainwater Harvesting: Soil Storage and Infiltration System

    E-Print Network [OSTI]

    Mechell, Justin; Lesikar, Bruce J.

    2008-08-11T23:59:59.000Z

    A soil storage and infiltration system collects rainfall runoff from the roofs of buildings and directs it underground where it infiltrates the soil. Such a system conserves water and protects it from surface pollution. This publication describes...

  4. POWER SCHEDULING IN A HYDRO-THERMAL SYSTEM UNDER UNCERTAINTY

    E-Print Network [OSTI]

    Römisch, Werner

    POWER SCHEDULING IN A HYDRO-THERMAL SYSTEM UNDER UNCERTAINTY C.C. Car e1, M.P. Nowak2, W. Romisch2 Forschungsgemeinschaft. leads to a tremendous increase in the complex- ity of the traditional power optimization mod- els-burning) thermal units, pumped-storage hydro plants and delivery con- tracts and describe an optimization model

  5. SPEK: A Storage Performance Evaluation Kernel Module for Block Level Storage Systems

    E-Print Network [OSTI]

    He, Xubin "Ben"

    SPEK: A Storage Performance Evaluation Kernel Module for Block Level Storage Systems Ming Zhang Cookeville, TN 38505, USA hexb@tntech.edu Abstract In this paper we introduce SPEK (Storage Performance storage systems at block level. It can be used for both DAS (Direct Attached Storage) and block level

  6. Lessons Learned from the Puerto Rico Battery Energy Storage System

    SciTech Connect (OSTI)

    BOYES, JOHN D.; DE ANA, MINDI FARBER; TORRES, WENCESLANO

    1999-09-01T23:59:59.000Z

    The Puerto Rico Electric Power Authority (PREPA) installed a distributed battery energy storage system in 1994 at a substation near San Juan, Puerto Rico. It was patterned after two other large energy storage systems operated by electric utilities in California and Germany. The U.S. Department of Energy (DOE) Energy Storage Systems Program at Sandia National Laboratories has followed the progress of all stages of the project since its inception. It directly supported the critical battery room cooling system design by conducting laboratory thermal testing of a scale model of the battery under simulated operating conditions. The Puerto Rico facility is at present the largest operating battery storage system in the world and is successfully providing frequency control, voltage regulation, and spinning reserve to the Caribbean island. The system further proved its usefulness to the PREPA network in the fall of 1998 in the aftermath of Hurricane Georges. The owner-operator, PREPA, and the architect/engineer, vendors, and contractors learned many valuable lessons during all phases of project development and operation. In documenting these lessons, this report will help PREPA and other utilities in planning to build large energy storage systems.

  7. Evaluation of olivine ceramic refractories for thermal-energy-storage application

    SciTech Connect (OSTI)

    Palmour, H. III; Gay, B.M.; Cochran, R.L.

    1981-01-01T23:59:59.000Z

    High-heat capacity refractory ceramics have been employed in European electric heat storage furnaces for over two decades. In these systems, ceramic refractories are heated to approximately 1500/sup 0/F, using low-cost electric energy during the off-peak demand hours. During the peak demand hours, heat is extracted as needed by controlled circulation of air through the core to meet space conditioning requirements. Heat storage or thermal energy storage (TES) furnaces represent (a) valuable load-leveling capabilities for electric utilities and (b) safe, convenient, reliable heat sources for consumers. Because of its relatively high-heat capacity and relatively low cost, olivine is one of the more attractive candidate materials for such ceramics. This paper includes a discussion of the goals of the current study, along with results achieved to date. Further, here is a discussion of future work to be undertaken as a part of this study.

  8. Spent fuel dry storage technology development: thermal evaluation of sealed storage cask containing spent fuel

    SciTech Connect (OSTI)

    Schmitten, P.F.; Wright, J.B.

    1980-08-01T23:59:59.000Z

    A PWR spent fuel assembly was encapsulated inside the E-MAD Hot Bay and placed in a instrumented above surface storage cell during December 1978 for thermal testing. Instrumentation provided to measure canister, liner and concrete temperatures consisted of thermocouples which were inserted into tubes on the outside of the canister and liner and in three radial positions in the concrete. Temperatures from the SSC test assembly have been recorded throughout the past 16 months. Canister and liner temperatures have reached their peak values of 200{sup 0}F and 140{sup 0}F, respectively. Computer predictions of the transient and steady-state temperatures show good agreement with the test data.

  9. Phase-change thermal energy storage: Final subcontract report

    SciTech Connect (OSTI)

    Not Available

    1989-11-01T23:59:59.000Z

    The research and development described in this document was conducted within the US Department of Energy's Solar Thermal Technology Program. The goal of this program is to advance the engineering and scientific understanding of solar thermal technology and to establish the technology base from which private industry can develop solar thermal power production options for introduction into the competitive energy market. Solar thermal technology concentrates the solar flux using tracking mirrors or lenses onto a receiver where the solar energy is absorbed as heat and converted into electricity or incorporated into products as process heat. The two primary solar thermal technologies, central receivers and distributed receivers, employ various point and line-focus optics to concentrate sunlight. Current central receiver systems use fields of heliostats (two-axes tracking mirrors) to focus the sun's radiant energy onto a single, tower-mounted receiver. Point focus concentrators up to 17 meters in diameter track the sun in two axes and use parabolic dish mirrors or Fresnel lenses to focus radiant energy onto a receiver. Troughs and bowls are line-focus tracking reflectors that concentrate sunlight onto receiver tubes along their focal lines. Concentrating collector modules can be used alone or in a multimodule system. The concentrated radiant energy absorbed by the solar thermal receiver is transported to the conversion process by a circulating working fluid. Receiver temperatures range from 100{degree}C in low-temperature troughs to over 1500{degree}C in dish and central receiver systems. 12 refs., 119 figs., 4 tabs.

  10. Energy Storage R&D: Thermal Management Studies and Modeling (Presentation)

    SciTech Connect (OSTI)

    Pesaran, A. A.

    2009-05-01T23:59:59.000Z

    Here we summarize NREL's FY09 energy storage R&D studies in the areas of 1. thermal characterization and analysis, 2. cost, life, and performance trade-off studies, and 3. thermal abuse modeling.

  11. Evaporative cooling enhanced cold storage system

    DOE Patents [OSTI]

    Carr, P.

    1991-10-15T23:59:59.000Z

    The invention provides an evaporatively enhanced cold storage system wherein a warm air stream is cooled and the cooled air stream is thereafter passed into contact with a cold storage unit. Moisture is added to the cooled air stream prior to or during contact of the cooled air stream with the cold storage unit to effect enhanced cooling of the cold storage unit due to evaporation of all or a portion of the added moisture. Preferably at least a portion of the added moisture comprises water condensed during the cooling of the warm air stream. 3 figures.

  12. Evaporative cooling enhanced cold storage system

    DOE Patents [OSTI]

    Carr, Peter (Cary, NC)

    1991-01-01T23:59:59.000Z

    The invention provides an evaporatively enhanced cold storage system wherein a warm air stream is cooled and the cooled air stream is thereafter passed into contact with a cold storage unit. Moisture is added to the cooled air stream prior to or during contact of the cooled air stream with the cold storage unit to effect enhanced cooling of the cold storage unit due to evaporation of all or a portion of the added moisture. Preferably at least a portion of the added moisture comprises water condensed during the cooling of the warm air stream.

  13. Distributed Storage Systems for Data Intensive Computing

    SciTech Connect (OSTI)

    Vazhkudai, Sudharshan S [ORNL; Butt, Ali R [Virginia Polytechnic Institute and State University (Virginia Tech); Ma, Xiaosong [ORNL

    2012-01-01T23:59:59.000Z

    In this chapter, the authors present an overview of the utility of distributed storage systems in supporting modern applications that are increasingly becoming data intensive. Their coverage of distributed storage systems is based on the requirements imposed by data intensive computing and not a mere summary of storage systems. To this end, they delve into several aspects of supporting data-intensive analysis, such as data staging, offloading, checkpointing, and end-user access to terabytes of data, and illustrate the use of novel techniques and methodologies for realizing distributed storage systems therein. The data deluge from scientific experiments, observations, and simulations is affecting all of the aforementioned day-to-day operations in data-intensive computing. Modern distributed storage systems employ techniques that can help improve application performance, alleviate I/O bandwidth bottleneck, mask failures, and improve data availability. They present key guiding principles involved in the construction of such storage systems, associated tradeoffs, design, and architecture, all with an eye toward addressing challenges of data-intensive scientific applications. They highlight the concepts involved using several case studies of state-of-the-art storage systems that are currently available in the data-intensive computing landscape.

  14. Compressed air energy storage system

    DOE Patents [OSTI]

    Ahrens, Frederick W. (Naperville, IL); Kartsounes, George T. (Naperville, IL)

    1981-01-01T23:59:59.000Z

    An internal combustion reciprocating engine is operable as a compressor during slack demand periods utilizing excess power from a power grid to charge air into an air storage reservoir and as an expander during peak demand periods to feed power into the power grid utilizing air obtained from the air storage reservoir together with combustible fuel. Preferably the internal combustion reciprocating engine is operated at high pressure and a low pressure turbine and compressor are also employed for air compression and power generation.

  15. CATALYTICALLY ENCHANCED SYSTEMS FOR HYDROGEN STORAGE

    E-Print Network [OSTI]

    to the conversion of the world to a "hydrogen economy" is the problem of onboard hydrogen storage. Despite decadesCATALYTICALLY ENCHANCED SYSTEMS FOR HYDROGEN STORAGE Craig M. Jensen, Dalin Sun, Sesha Sai RamanH/Al and the reverse hydrogenation reactions have been determined through kinetic studies of 2 mol % Ti and Zr doped

  16. IBM System Storage Product Guide IBM Systems and Technology Group

    E-Print Network [OSTI]

    IBM System Storage Product Guide IBM Systems and Technology Group #12;2 Today, information has, reduce storage and archiving costs and enable continuous access to information in support of business requirements. Learn more about IBM Information Infrastructure, including the full range of data storage

  17. Project Profile: Heat Transfer and Latent Heat Storage in Inorganic...

    Energy Savers [EERE]

    Terrafore, under the Thermal Storage FOA, is developing an economically feasible thermal energy storage (TES) system based on phase change materials (PCMs), for CSP plants....

  18. Evaluation of annual efficiencies of high temperature central receiver concentrated solar power plants with thermal energy storage.

    SciTech Connect (OSTI)

    Ehrhart, Brian David; Gill, David Dennis

    2013-07-01T23:59:59.000Z

    The current study has examined four cases of a central receiver concentrated solar power plant with thermal energy storage using the DELSOL and SOLERGY computer codes. The current state-of-the-art base case was compared with a theoretical high temperature case which was based on the scaling of some input parameters and the estimation of other parameters based on performance targets from the Department of Energy SunShot Initiative. This comparison was done for both current and high temperature cases in two configurations: a surround field with an external cylindrical receiver and a north field with a single cavity receiver. There is a fairly dramatic difference between the design point and annual average performance, especially in the solar field and receiver subsystems, and also in energy losses due to the thermal energy storage being full to capacity. Additionally, there are relatively small differences (<2%) in annual average efficiencies between the Base and High Temperature cases, despite an increase in thermal to electric conversion efficiency of over 8%. This is due the increased thermal losses at higher temperature and operational losses due to subsystem start-up and shut-down. Thermal energy storage can mitigate some of these losses by utilizing larger thermal energy storage to ensure that the electric power production system does not need to stop and re-start as often, but solar energy is inherently transient. Economic and cost considerations were not considered here, but will have a significant impact on solar thermal electric power production strategy and sizing.

  19. Development and Performance Evaluation of High Temperature Concrete for Thermal Energy Storage for Solar Power Generation

    SciTech Connect (OSTI)

    R. Panneer Selvam, Micah Hale and Matt strasser

    2013-03-31T23:59:59.000Z

    Thermal energy can be stored by the mechanism of sensible or latent heat or heat from chemical reactions. Sensible heat is the means of storing energy by increasing the temperature of the solid or liquid. Since the concrete as media cost per kWhthermal is $1, this seems to be a very economical material to be used as a TES. This research is focused on extending the concrete TES system for higher temperatures (500 Ă?ÂşC to 600 Ă?ÂşC) and increasing the heat transfer performance using novel construction techniques. To store heat at high temperature special concretes are developed and tested for its performance. The storage capacity costs of the developed concrete is in the range of $0.91-$3.02/kWhthermal Two different storage methods are investigated. In the first one heat is transported using molten slat through a stainless steel tube and heat is transported into concrete block through diffusion. The cost of the system is higher than the targeted DOE goal of $15/kWhthermal The increase in cost of the system is due to stainless steel tube to transfer the heat from molten salt to the concrete blocks.The other method is a one-tank thermocline system in which both the hot and cold fluid occupy the same tank resulting in reduced storage tank volume. In this model, heated molten salt enters the top of the tank which contains a packed bed of quartzite rock and silica sand as the thermal energy storage (TES) medium. The single-tank storage system uses about half the salt that is required by the two-tank system for a required storage capacity. This amounts to a significant reduction in the cost of the storage system. The single tank alternative has also been proven to be cheaper than the option which uses large concrete modules with embedded heat exchangers. Using computer models optimum dimensions are determined to have an round trip efficiency of 84%. Additionally, the cost of the structured concrete thermocline configuration provides the TES capacity cost of $33.80$/kWhthermal compared with $30.04/kWhthermal for a packed-bed thermocline (PBTC) configuration and $46.11/kWhthermal for a two-tank liquid configuration.

  20. Horizontal modular dry irradiated fuel storage system

    DOE Patents [OSTI]

    Fischer, Larry E. (Los Gatos, CA); McInnes, Ian D. (San Jose, CA); Massey, John V. (San Jose, CA)

    1988-01-01T23:59:59.000Z

    A horizontal, modular, dry, irradiated fuel storage system (10) includes a thin-walled canister (12) for containing irradiated fuel assemblies (20), which canister (12) can be positioned in a transfer cask (14) and transported in a horizontal manner from a fuel storage pool (18), to an intermediate-term storage facility. The storage system (10) includes a plurality of dry storage modules (26) which accept the canister (12) from the transfer cask (14) and provide for appropriate shielding about the canister (12). Each module (26) also provides for air cooling of the canister (12) to remove the decay heat of the irradiated fuel assemblies (20). The modules (26) can be interlocked so that each module (26) gains additional shielding from the next adjacent module (26). Hydraulic rams (30) are provided for inserting and removing the canisters (12) from the modules (26).

  1. Electricity storage for short term power system service (Smart...

    Open Energy Info (EERE)

    storage for short term power system service (Smart Grid Project) Jump to: navigation, search Project Name Electricity storage for short term power system service Country Denmark...

  2. Energy Storage Systems 2014 Peer Review Presentations - Poster...

    Office of Environmental Management (EM)

    4 Energy Storage Systems 2014 Peer Review Presentations - Poster Session 4 OE's Energy Storage Systems (ESS) Program conducted a peer review and update meeting in Washington, DC on...

  3. Energy Storage Systems 2012 Peer Review Presentations - Poster...

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

    National Lab Projects Energy Storage Systems 2012 Peer Review Presentations - Poster Session 1 (Day 1): National Lab Projects The U.S. DOE Energy Storage Systems Program (ESS)...

  4. Fact Sheet: Codes and Standards for Energy Storage System Performance...

    Energy Savers [EERE]

    Codes and Standards for Energy Storage System Performance and Safety (June 2014) Fact Sheet: Codes and Standards for Energy Storage System Performance and Safety (June 2014) The...

  5. Energy Storage Systems 2014 Peer Review Presentations - Poster...

    Office of Environmental Management (EM)

    8 Energy Storage Systems 2014 Peer Review Presentations - Poster Session 8 OE's Energy Storage Systems (ESS) Program conducted a peer review and update meeting in Washington, DC on...

  6. Hydrgoen Storage Systems Analysis Working Group Meeting Summary...

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

    Hydrgoen Storage Systems Analysis Working Group Meeting Summary Report Hydrgoen Storage Systems Analysis Working Group Meeting Summary Report Summary report from the May 17, 2007...

  7. Energy Storage Systems 2012 Peer Review Presentations - Poster...

    Office of Environmental Management (EM)

    University Projects Energy Storage Systems 2012 Peer Review Presentations - Poster Session 2 (Day 2): University Projects The U.S. DOE Energy Storage Systems Program (ESS)...

  8. Energy Storage Systems 2007 Peer Review - Power Electronics Presentati...

    Office of Environmental Management (EM)

    Power Electronics Presentations Energy Storage Systems 2007 Peer Review - Power Electronics Presentations The U.S. DOE Energy Storage Systems Program (ESS) held an annual peer...

  9. Energy Storage Systems 2007 Peer Review - Utility & Commercial...

    Office of Environmental Management (EM)

    Utility & Commercial Applications Presentations Energy Storage Systems 2007 Peer Review - Utility & Commercial Applications Presentations The U.S. DOE Energy Storage Systems...

  10. Technical Assessment of Compressed Hydrogen Storage Tank Systems...

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

    Compressed Hydrogen Storage Tank Systems for Automotive Applications Technical Assessment of Compressed Hydrogen Storage Tank Systems for Automotive Applications Technical report...

  11. Microwave impregnation of porous materials with thermal energy storage materials

    DOE Patents [OSTI]

    Benson, David K. (Golden, CO); Burrows, Richard W. (Conifer, CO)

    1993-01-01T23:59:59.000Z

    A method for impregnating a porous, non-metallic construction material with a solid phase-change material is described. The phase-change material in finely divided form is spread onto the surface of the porous material, after which the porous material is exposed to microwave energy for a time sufficient to melt the phase-change material. The melted material is spontaneously absorbed into the pores of the porous material. A sealing chemical may also be included with the phase-change material (or applied subsequent to the phase-change material) to seal the surface of the porous material. Fire retardant chemicals may also be included with the phase-change materials. The treated construction materials are better able to absorb thermal energy and exhibit increased heat storage capacity.

  12. Microwave impregnation of porous materials with thermal energy storage materials

    DOE Patents [OSTI]

    Benson, D.K.; Burrows, R.W.

    1993-04-13T23:59:59.000Z

    A method for impregnating a porous, non-metallic construction material with a solid phase-change material is described. The phase-change material in finely divided form is spread onto the surface of the porous material, after which the porous material is exposed to microwave energy for a time sufficient to melt the phase-change material. The melted material is spontaneously absorbed into the pores of the porous material. A sealing chemical may also be included with the phase-change material (or applied subsequent to the phase-change material) to seal the surface of the porous material. Fire retardant chemicals may also be included with the phase-change materials. The treated construction materials are better able to absorb thermal energy and exhibit increased heat storage capacity.

  13. ONLINE STORAGE ON COMPUTERS AS DISTRIBUTED LONG-TERM STORAGE SYSTEM

    E-Print Network [OSTI]

    Keller, Jörg

    ONLINE STORAGE ON COMPUTERS AS DISTRIBUTED LONG-TERM STORAGE SYSTEM Ralf Naues, Jörg Keller Dept.naues@fernuni-hagen.de joerg.keller@fernuni-hagen.de Keywords Long term storage, Distributed storage, preservation of data Abstract Long-term storage is a widely discussed problem. The amount of digital data is growing faster

  14. Using MEMS-Based Storage in Computer Systems --MEMS Storage Architectures

    E-Print Network [OSTI]

    Miller, Ethan L.

    Using MEMS-Based Storage in Computer Systems -- MEMS Storage Architectures Bo Hong Feng Wang. E. Schwarz, S. J. Santa Clara University As an emerging non-volatile secondary storage technology, MEMS-based storage exhibits sev- eral desirable properties including high performance, high storage

  15. Solar Thermal Energy Storage Device: Hybrid Nanostructures for High-Energy-Density Solar Thermal Fuels

    SciTech Connect (OSTI)

    None

    2012-01-09T23:59:59.000Z

    HEATS Project: MIT is developing a thermal energy storage device that captures energy from the sun; this energy can be stored and released at a later time when it is needed most. Within the device, the absorption of sunlight causes the solar thermal fuel’s photoactive molecules to change shape, which allows energy to be stored within their chemical bonds. A trigger is applied to release the stored energy as heat, where it can be converted into electricity or used directly as heat. The molecules would then revert to their original shape, and can be recharged using sunlight to begin the process anew. MIT’s technology would be 100% renewable, rechargeable like a battery, and emissions-free. Devices using these solar thermal fuels—called Hybrisol—can also be used without a grid infrastructure for applications such as de-icing, heating, cooking, and water purification.

  16. Comparison of closed and open thermochemical processes, for long-term thermal energy storage applications

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Comparison of closed and open thermochemical processes, for long-term thermal energy storage-term thermal storage, second law analysis * Corresponding author: E-mail: mazet@univ-perp.fr Nomenclature c Energy Tecnosud, Rambla de la thermodynamique, 66100 Perpignan, France b Université de Perpignan Via

  17. EXPERIMENTAL AND THEORETICAL STUDIES OF THERMAL ENERGY STORAGE IN AQUIFERS

    E-Print Network [OSTI]

    Tsang, Chin Fu

    2011-01-01T23:59:59.000Z

    1971, storage of Solar Energy in a Bandy- Gravel Ground. 2.Aquifer Storage of Heated Water: A Field Experuuent. GroundStorage of Heated Water: Part II - Numerical Simulation of Field Results. Ground

  18. SENSIBLE HEAT STORAGE FOR A SOLAR THERMAL POWER PLANT

    E-Print Network [OSTI]

    Baldwin, Thomas F.

    2011-01-01T23:59:59.000Z

    process configurations for solar power plants with sensible-heatsolar power plant with sensible-heat storage since the chemical~heat storage processsolar power plant with a sulfur-oxide storage process. chemical~heat

  19. Energy Storage Systems 2005 Peer Review

    Broader source: Energy.gov [DOE]

    The U.S. DOE Energy Storage Systems Program (ESS) held an annual peer review on October 20, 2005 in San Francisco, CA. The agenda and ESS program overview presentation are below.

  20. Thermal Solar Energy Systems for Space Heating of Buildings

    E-Print Network [OSTI]

    Gomri, R.; Boulkamh, M.

    2010-01-01T23:59:59.000Z

    combined with heat pump improve the thermal performance of the heat pump and the global system. The performances of the heating system combining heat pump and solar collectors are higher than that of solar heating system with solar collectors and storage...

  1. Integrated Building Energy Systems Design Considering Storage Technologies

    E-Print Network [OSTI]

    Stadler, Michael

    2009-01-01T23:59:59.000Z

    Energy Systems Design Considering Storage Technologiesenergy systems design considering storage technologiesand Technology, Japan HAki@lbl.gov Keywords Combined heat and power, CO 2 emissions, demand response, electric storage, energy

  2. Test report : Princeton power systems prototype energy storage system.

    SciTech Connect (OSTI)

    Rose, David Martin; Schenkman, Benjamin L.; Borneo, Daniel R.

    2013-08-01T23:59:59.000Z

    The Department of Energy Office of Electricity (DOE/OE), Sandia National Laboratory (SNL) and the Base Camp Integration Lab (BCIL) partnered together to incorporate an energy storage system into a microgrid configured Forward Operating Base to reduce the fossil fuel consumption and to ultimately save lives. Energy storage vendors will be sending their systems to SNL Energy Storage Test Pad (ESTP) for functional testing and then to the BCIL for performance evaluation. The technologies that will be tested are electro-chemical energy storage systems comprised of lead acid, lithium-ion or zinc-bromide. Princeton Power Systems has developed an energy storage system that utilizes lithium ion phosphate batteries to save fuel on a military microgrid. This report contains the testing results and some limited analysis of performance of the Princeton Power Systems Prototype Energy Storage System.

  3. The Effects of Nanoparticle Augmentation of Nitrate Thermal Storage Materials for Use in Concentrating Solar Power Applications

    E-Print Network [OSTI]

    Betts, Matthew

    2011-08-08T23:59:59.000Z

    The Department of Energy funded a project to determine if the specific heat of thermal energy storage materials could be improved by adding nanoparticles. The standard thermal energy storage materials are molten salts. The chosen molten salt was a...

  4. SENSIBLE HEAT STORAGE FOR A SOLAR THERMAL POWER PLANT

    E-Print Network [OSTI]

    Baldwin, Thomas F.

    2011-01-01T23:59:59.000Z

    Thermal Efficiency of Generation, Discharging, Gross Electric Generation,e 1% of the gross electric generation. Thermal losses fromNet Electric Power Generation, Discharging, MWe Net Thermal

  5. Gas hydrate cool storage system

    DOE Patents [OSTI]

    Ternes, Mark P. (Knoxville, TN); Kedl, Robert J. (Oak Ridge, TN)

    1985-01-01T23:59:59.000Z

    This invention is a process for formation of a gas hydrate to be used as a cool storage medium using a refrigerant in water. Mixing of the immiscible refrigerant and water is effected by addition of a surfactant and agitation. The difficult problem of subcooling during the process is overcome by using the surfactant and agitation and performance of the process significantly improves and approaches ideal.

  6. Energy storage systems cost update : a study for the DOE Energy Storage Systems Program.

    SciTech Connect (OSTI)

    Schoenung, Susan M. (Longitude 122 West, Menlo Park, CA)

    2011-04-01T23:59:59.000Z

    This paper reports the methodology for calculating present worth of system and operating costs for a number of energy storage technologies for representative electric utility applications. The values are an update from earlier reports, categorized by application use parameters. This work presents an update of energy storage system costs assessed previously and separately by the U.S. Department of Energy (DOE) Energy Storage Systems Program. The primary objective of the series of studies has been to express electricity storage benefits and costs using consistent assumptions, so that helpful benefit/cost comparisons can be made. Costs of energy storage systems depend not only on the type of technology, but also on the planned operation and especially the hours of storage needed. Calculating the present worth of life-cycle costs makes it possible to compare benefit values estimated on the same basis.

  7. Development and characterization of a new MgSO4-zeolite composite for long-term thermal energy storage

    E-Print Network [OSTI]

    the material. For that specific purpose, a new thermal energy storage composite material has been developed expanded structure for MgSO4, with energy densities of 150-400 kWh.m-3 at a storage temperature compatible. Keywords: thermal energy storage; thermochemical process; long-term storage; zeolites; magnesium sulphate

  8. MPEG-aware disk storage system

    E-Print Network [OSTI]

    Ren, Qian

    2000-01-01T23:59:59.000Z

    Disks. Digital Video Standards Multi-ported Disk Storage System. . . . . 3 . 4 . 4 . 5 III MPEG-A WARE DISK STORAGE SYSTEM. IV IMPLEMENTATION BACKGROUND. . . 10 4. 1 ISO 11172 Standard 4. 2 ISO 11172 System. 4. 2. 1 Overview . 4. 2. 2 Start... Code 4. 2. 3 System Bitstream Overview 4. 3 ISO 11172 Video. . 10 . 10 . 10 . 12 . 14 . 16 V IMPLEMENTATION DETAIL 18 5. 1 Software Structure 5. 2 Processing Center. 5. 3 Implemented Modules. 5. 3. 1 Fast-forwarding 5. 3. 2 Quality...

  9. Experimental investigation of an innovative thermochemical process operating with a hydrate salt and moist air for thermal storage of solar

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    and moist air for thermal storage of solar energy: global performance Benoit Michela, *, Nathalie Mazeta-gas reaction, hydration, thermal storage, seasonal storage, solar energy * Corresponding author: E-mail: mazet Der energy density of the reactor, Jm -3 thermal conductivity, Wm -1 .K -1 G reactive gas

  10. Sandia National Laboratories: thermochemical energy-storage systems

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

    energy-storage systems Sandia Researchers Win CSP:ELEMENTS Funding Award On June 4, 2014, in Advanced Materials Laboratory, Concentrating Solar Power, Energy, Energy Storage,...

  11. Hydrogen Storage Systems Analysis Working Group Meeting: Summary...

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

    Summary of June 11, 2008, biannual meeting of the Hydrogen Storage Systems Analysis Working Group. ssawgsummaryreport0608.pdf More Documents & Publications Hydrgoen Storage...

  12. Developing a Cost Model and Methodology to Estimate Capital Costs for Thermal Energy Storage

    SciTech Connect (OSTI)

    Glatzmaier, G.

    2011-12-01T23:59:59.000Z

    This report provides an update on the previous cost model for thermal energy storage (TES) systems. The update allows NREL to estimate the costs of such systems that are compatible with the higher operating temperatures associated with advanced power cycles. The goal of the Department of Energy (DOE) Solar Energy Technology Program is to develop solar technologies that can make a significant contribution to the United States domestic energy supply. The recent DOE SunShot Initiative sets a very aggressive cost goal to reach a Levelized Cost of Energy (LCOE) of 6 cents/kWh by 2020 with no incentives or credits for all solar-to-electricity technologies.1 As this goal is reached, the share of utility power generation that is provided by renewable energy sources is expected to increase dramatically. Because Concentrating Solar Power (CSP) is currently the only renewable technology that is capable of integrating cost-effective energy storage, it is positioned to play a key role in providing renewable, dispatchable power to utilities as the share of power generation from renewable sources increases. Because of this role, future CSP plants will likely have as much as 15 hours of Thermal Energy Storage (TES) included in their design and operation. As such, the cost and performance of the TES system is critical to meeting the SunShot goal for solar technologies. The cost of electricity from a CSP plant depends strongly on its overall efficiency, which is a product of two components - the collection and conversion efficiencies. The collection efficiency determines the portion of incident solar energy that is captured as high-temperature thermal energy. The conversion efficiency determines the portion of thermal energy that is converted to electricity. The operating temperature at which the overall efficiency reaches its maximum depends on many factors, including material properties of the CSP plant components. Increasing the operating temperature of the power generation system leads to higher thermal-to-electric conversion efficiency. However, in a CSP system, higher operating temperature also leads to greater thermal losses. These two effects combine to give an optimal system-level operating temperature that may be less than the upper operating temperature limit of system components. The overall efficiency may be improved by developing materials, power cycles, and system-integration strategies that enable operation at elevated temperature while limiting thermal losses. This is particularly true for the TES system and its components. Meeting the SunShot cost target will require cost and performance improvements in all systems and components within a CSP plant. Solar collector field hardware will need to decrease significantly in cost with no loss in performance and possibly with performance improvements. As higher temperatures are considered for the power block, new working fluids, heat-transfer fluids (HTFs), and storage fluids will all need to be identified to meet these new operating conditions. Figure 1 shows thermodynamic conversion efficiency as a function of temperature for the ideal Carnot cycle and 75% Carnot, which is considered to be the practical efficiency attainable by current power cycles. Current conversion efficiencies for the parabolic trough steam cycle, power tower steam cycle, parabolic dish/Stirling, Ericsson, and air-Brayton/steam Rankine combined cycles are shown at their corresponding operating temperatures. Efficiencies for supercritical steam and carbon dioxide (CO{sub 2}) are also shown for their operating temperature ranges.

  13. Simulating the Value of Concentrating Solar Power with Thermal Energy Storage in a Production Cost Model

    SciTech Connect (OSTI)

    Denholm, P.; Hummon, M.

    2012-11-01T23:59:59.000Z

    Concentrating solar power (CSP) deployed with thermal energy storage (TES) provides a dispatchable source of renewable energy. The value of CSP with TES, as with other potential generation resources, needs to be established using traditional utility planning tools. Production cost models, which simulate the operation of grid, are often used to estimate the operational value of different generation mixes. CSP with TES has historically had limited analysis in commercial production simulations. This document describes the implementation of CSP with TES in a commercial production cost model. It also describes the simulation of grid operations with CSP in a test system consisting of two balancing areas located primarily in Colorado.

  14. Integrated Building Energy Systems Design Considering Storage Technologies

    SciTech Connect (OSTI)

    Stadler, Michael; Marnay, Chris; Siddiqui, Afzal; Lai, Judy; Aki, Hirohisa

    2009-04-07T23:59:59.000Z

    The addition of storage technologies such as flow batteries, conventional batteries, and heat storage can improve the economic, as well as environmental attraction of micro-generation systems (e.g., PV or fuel cells with or without CHP) and contribute to enhanced demand response. The interactions among PV, solar thermal, and storage systems can be complex, depending on the tariff structure, load profile, etc. In order to examine the impact of storage technologies on demand response and CO2 emissions, a microgrid's distributed energy resources (DER) adoption problem is formulated as a mixed-integer linear program that can pursue two strategies as its objective function. These two strategies are minimization of its annual energy costs or of its CO2 emissions. The problem is solved for a given test year at representative customer sites, e.g., nursing homes, to obtain not only the optimal investment portfolio, but also the optimal hourly operating schedules for the selected technologies. This paper focuses on analysis of storage technologies in micro-generation optimization on a building level, with example applications in New York State and California. It shows results from a two-year research projectperformed for the U.S. Department of Energy and ongoing work. Contrary to established expectations, our results indicate that PV and electric storage adoption compete rather than supplement each other considering the tariff structure and costs of electricity supply. The work shows that high electricity tariffs during on-peak hours are a significant driver for the adoption of electric storage technologies. To satisfy the site's objective of minimizing energy costs, the batteries have to be charged by grid power during off-peak hours instead of PV during on-peak hours. In contrast, we also show a CO2 minimization strategy where the common assumption that batteries can be charged by PV can be fulfilled at extraordinarily high energy costs for the site.

  15. The Utility Battery Storage Systems Program Overview

    SciTech Connect (OSTI)

    Not Available

    1994-11-01T23:59:59.000Z

    Utility battery energy storage allows a utility or customer to store electrical energy for dispatch at a time when its use is more economical, strategic, or efficient. The UBS program sponsors systems analyses, technology development of subsystems and systems integration, laboratory and field evaluation, and industry outreach. Achievements and planned activities in each area are discussed.

  16. Lighting system with thermal management system

    DOE Patents [OSTI]

    Arik, Mehmet; Weaver, Stanton; Stecher, Thomas; Seeley, Charles; Kuenzler, Glenn; Wolfe, Jr., Charles; Utturkar, Yogen; Sharma, Rajdeep; Prabhakaran, Satish; Icoz, Tunc

    2013-05-07T23:59:59.000Z

    Lighting systems having unique configurations are provided. For instance, the lighting system may include a light source, a thermal management system and driver electronics, each contained within a housing structure. The light source is configured to provide illumination visible through an opening in the housing structure. The thermal management system is configured to provide an air flow, such as a unidirectional air flow, through the housing structure in order to cool the light source. The driver electronics are configured to provide power to each of the light source and the thermal management system.

  17. TIMING-ACCURATE STORAGE EMULATION: EVALUATING HYPOTHETICAL STORAGE COMPONENTS IN REAL COMPUTER SYSTEMS

    E-Print Network [OSTI]

    TIMING-ACCURATE STORAGE EMULATION: EVALUATING HYPOTHETICAL STORAGE COMPONENTS IN REAL COMPUTER;ABSTRACT Timing-accurate storage emulation offers a unique performance evaluation capability to experiment with not-yet-existing storage components in the context of real systems executing real

  18. Designing Microporus Carbons for Hydrogen Storage Systems

    SciTech Connect (OSTI)

    Alan C. Cooper

    2012-05-02T23:59:59.000Z

    An efficient, cost-effective hydrogen storage system is a key enabling technology for the widespread introduction of hydrogen fuel cells to the domestic marketplace. Air Products, an industry leader in hydrogen energy products and systems, recognized this need and responded to the DOE 'Grand Challenge' solicitation (DOE Solicitation DE-PS36-03GO93013) under Category 1 as an industry partner and steering committee member with the National Renewable Energy Laboratory (NREL) in their proposal for a center-of-excellence on Carbon-Based Hydrogen Storage Materials. This center was later renamed the Hydrogen Sorption Center of Excellence (HSCoE). Our proposal, entitled 'Designing Microporous Carbons for Hydrogen Storage Systems,' envisioned a highly synergistic 5-year program with NREL and other national laboratory and university partners.

  19. Magnetic Energy Storage System: Superconducting Magnet Energy Storage System with Direct Power Electronics Interface

    SciTech Connect (OSTI)

    None

    2010-10-01T23:59:59.000Z

    GRIDS Project: ABB is developing an advanced energy storage system using superconducting magnets that could store significantly more energy than today’s best magnetic storage technologies at a fraction of the cost. This system could provide enough storage capacity to encourage more widespread use of renewable power like wind and solar. Superconducting magnetic energy storage systems have been in development for almost 3 decades; however, past devices were designed to supply power only for short durations—generally less than a few minutes. ABB’s system would deliver the stored energy at very low cost, making it ideal for eventual use in the electricity grid as a costeffective competitor to batteries and other energy storage technologies. The device could potentially cost even less, on a per kilowatt basis, than traditional lead-acid batteries.

  20. SENSIBLE HEAT STORAGE FOR A SOLAR THERMAL POWER PLANT

    E-Print Network [OSTI]

    Baldwin, Thomas F.

    2011-01-01T23:59:59.000Z

    for concentrating solar-thermal energy use a large number ofBoth solar power plants absorb thermal energy in high-of a solar power plant that converts thermal energy into

  1. State-of-the-Art Thermal Energy Storage Retrofit at a Large Manufacturing Facility

    E-Print Network [OSTI]

    Fiorino, D.

    This paper will describe the existing conditions, strategic planning, feasibility study, economic analysis, design, specification, construction, and project management for the 2.9 megawatt “full shift” chilled water thermal energy storage retrofit...

  2. Thermal Energy Storage: It's not Just for Electric Cost Savings Anymore

    E-Print Network [OSTI]

    Andrepont, J. S.

    2014-01-01T23:59:59.000Z

    Large cool Thermal Energy Storage (TES), typically ice TES or chilled water (CHW) TES, has traditionally been thought of, and used for, managing time-of-day electricity use to reduce the cost associated with electric energy and demand charges...

  3. Thermal Energy Storage/Heat Recovery and Energy Conservation in Food Processing

    E-Print Network [OSTI]

    Combes, R. S.; Boykin, W. B.

    1980-01-01T23:59:59.000Z

    from waste heat streams for reuse in the processing operations. This paper addresses the recovery of waste heat and the storage of thermal energy as a means of energy conservation in food processing. An energy conservation project in a poultry...

  4. Comparison of the percent recoveries of activated charcoal and Spherocarb after storage utilizing thermal desorption

    E-Print Network [OSTI]

    Stidham, Paul Emery

    1980-01-01T23:59:59.000Z

    between the two adsorbents. The parameters of storage in- cluded various durations of time, temperatures, and concentrations. Rather than the present conventional solvent desorption methods, thermal desorption was used in the analysis of samples... Duncan's Multiple Range Test For Variable Percent. 32 6 Mean Percent Recoveries For The Interaction Between Type Of Adsorbent And Storage Time . 7 Mean Percent Recoveries For The Interaction Between Sample Concentration And Storage Time. 39 40 8...

  5. Site-specific investigations of aquifer thermal energy storage for space and process cooling

    SciTech Connect (OSTI)

    Brown, D R; Hattrup, M P; Watts, R L

    1991-08-01T23:59:59.000Z

    The Pacific Northwest Laboratory (PNL) has completed three preliminary site-specific feasibility studies that investigated using aquifer thermal energy storage (ATES) to reduce space and process cooling costs. Chilled water stored in an ATES system could be used to meet all or part of the process and/or space cooling loads at the three facilities investigated. The work was sponsored by the US Department of Energy's (DOE) Office of Energy Management. The ultimate goal of DOE's Thermal Energy Storage Program is to successfully transfer ATES technology to industrial and commercial sectors. The primary objective of this study was to identify prospective sites and determine the technical and economic feasibility of implementing chill ATES technology. A secondary objective was to identify site-specific factors promoting or inhibiting the application of chill ATES technology so that other potentially attractive sites could be more easily identified and evaluated. A preliminary investigation of the feasibility of commercializing chill ATES in automotive assembly facilities was completed. The results suggested that automotive assembly facilities was completed. The results suggested that automotive assembly facilities represent a good entry market for chill ATES, if the system is cost-effective. As a result, this study was undertaken to identify and evaluate prospective chill ATES applications in the automotive industry. The balance of the report contains two main sections. Section 2.0 describes the site identification process. Site feasibility is addressed in Section 3.0. Overall study conclusions and recommendations are than presented in Section 4.0.

  6. Decarbonizing the Electric Sector: Combining Renewable and Nuclear Energy using Thermal Storage

    SciTech Connect (OSTI)

    Denholm, P.; King, J.; Kutscher, C.; Wilson, P.

    2012-05-01T23:59:59.000Z

    Both renewable and nuclear energy can provide significant contributions to decarbonizing the electric sector. However, a grid employing large amounts of wind and solar energy requires the balance of the system to be highly flexible to respond to the increased variability of the net load. This makes deployment of conventional nuclear power challenging both due to the technical challenges of plant cycling and economic limits of reduced capacity factor. In the United States nuclear power plants generally provide constant, base load power and are most economic when operated at constant power levels. Operating nuclear power plants in load-following modes decreases the plants' annual energy output and increases the levelized cost of energy, decreasing economic competitiveness. One possible solution is to couple thermal energy storage to nuclear power plants. This would enable the reactor to remain at nearly constant output, while cycling the electrical generator in response to the variability of the net load. This paper conceptually explores combinations of wind, solar, and nuclear that can provide a large fraction of a system's electricity, assuming the use of thermal energy storage that would allow nuclear power to provide load following and cycling duty while operating at a constant reactor power output.

  7. Predictive control and thermal energy storage for optimizing a multi-energy district boiler

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Predictive control and thermal energy storage for optimizing a multi- energy district boiler Julien energy storage. 1. Introduction Managing energy demand, promoting renewable energy and finding ways of the OptiEnR research project, the present paper deals with optimizing the multi-energy district boiler

  8. INORGANIC NANOPARTICLES AS PHASE-CHANGE MATERIALS FOR LARGE-SCALE THERMAL ENERGY STORAGE

    E-Print Network [OSTI]

    Pennycook, Steve

    INORGANIC NANOPARTICLES AS PHASE-CHANGE MATERIALS FOR LARGE- SCALE THERMAL ENERGY STORAGE Miroslaw storage performance. The expected immediate outcome of this effort is the demonstration of high-energy generation at high efficiency could revolutionize the development of solar energy. Nanoparticle-based phase

  9. Thermal-hydraulic assessment of concrete storage cubicle with horizontal 3013 canisters

    SciTech Connect (OSTI)

    HEARD, F.J.

    1999-04-08T23:59:59.000Z

    The FIDAP computer code was used to perform a series of analyses to assess the thermal-hydraulic performance characteristics of the concrete plutonium storage cubicles, as modified for the horizontal placement of 3013 canisters. Four separate models were developed ranging from a full height model of the storage cubicle to a very detailed standalone model of a horizontal 3013 canister.

  10. Wave propagation and thermodynamic losses in packed-bed thermal reservoirs for energy storage

    E-Print Network [OSTI]

    White, Alexander; McTigue, Joshua; Markides, Christos

    2014-03-26T23:59:59.000Z

     .     The  reservoirs  of  interest  here  typically  comprise  a  cylindrical  pressure  vessel  containing  the  solid  storage  medium  in  the  form  of  a  packed  bed  of  pebbles  or  gravel,  or  a  uniform... WAVE  PROPAGATION  AND  THERMODYNAMIC  LOSSES  IN  PACKED-­?BED  THERMAL  RESERVOIRS  FOR  ENERGY  STORAGE       Alexander  White1,  Joshua  McTigue1,  Christos  Markides2   1  Cambridge  University...

  11. Full-scale study of a building equipped with phase change material wallboards and a multi-layer rack latent heat thermal energy store system

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    -layer rack latent heat thermal energy store system Julien Borderon1 , Joseph Virgone2 , Richard Cantin1 installed as wallboard and as latent heat thermal energy storage system coupled with the ventilation system for the ventilation air is efficient. INTRODUCTION Nowadays, thermal energy storage systems are one way for reducing

  12. Operating experience of a chilled water storage system

    SciTech Connect (OSTI)

    Pierpoint, T.J.; Marsilii, J.A.

    1986-03-01T23:59:59.000Z

    The Potomac Electric Power Company (PEPCO) is actively studying methods, such as Thermal Energy Storage (TES), to reduce the summer peak growth rate. TES is a technology that can provide significant reductions in the summer on-peak demand level thereby aiding building owners in reducing their operating costs while helping utilities reduce summer peak load growth. From analysis of PEPCO's chilled water storage system in its Forestville, MD office building it is evident that for demand reduction to be achieved significant consideration must be placed in the operational strategies chosen for the TES system. The chiller priority strategy was chosen because it is straightforward to implement and provides security that stored chilled water will always be available. The building, operating under the chiller priority scenario, accomplished a maximum load reduction 20 kW in 1985 and an average summer season load reduction of 13.5 kW. Demand reductions of up to 50 kW were expected but not achieved largely due to the operational strategies chosen. An alternative approach is storage priority. If storage priority had been implemented for the 1985 cooling season, analysis indicate that the expected demand reductions of 50 kW could have been achieved. 7 figures, 2 tables.

  13. University of Minnesota aquifer thermal energy storage (ATES) project report on the third long-term cycle

    SciTech Connect (OSTI)

    Hoyer, M.C.; Hallgren, J.P.; Uebel, M.H.; Delin, G.N.; Eisenreich, S.J.; Sterling, R.L.

    1994-12-01T23:59:59.000Z

    The University of Minnesota aquifer thermal energy storage (ATES) system has been operated as a field test facility (FTF) since 1982. The objectives were to design, construct, and operate the facility to study the feasibility of high-temperature ATES in a confined aquifer. Four short-term and two long-term cycles were previously conducted, which provided a greatly increased understanding of the efficiency and geochemical effects of high-temperature aquifer thermal energy storage. The third long-term cycle (LT3) was conducted to operate the ATES system in conjunction with a real heating load and to further study the geochemical impact that heated water storage had on the aquifer. For LT3, the source and storage wells were modified so that only the most permeable portion, the Ironton-Galesville part, of the Franconia-Ironton-Galesville aquifer was used for storage. This was expected to improve storage efficiency by reducing the surface area of the heated volume and simplify analysis of water chemistry results by reducing the number of aquifer-related variables which need to be considered. During LT3, a total volume of 63.2 {times} 10{sup 3} m {sup 3} of water was injected at a rate of 54.95 m{sup 3}/hr into the storage well at a mean temperature of 104.7{degrees}C. Tie-in to the reheat system of the nearby Animal Sciences Veterinary Medicine (ASVM) building was completed after injection was completed. Approximately 66 percent (4.13 GWh) of the energy added to the aquifer was recovered. Approximately 15 percent (0.64 GWh) of the usable (10 building. Operations during heat recovery with the ASVM building`s reheat system were trouble-free. Integration into more of the ASVM (or other) building`s mechanical systems would have resulted in significantly increasing the proportion of energy used during heat recovery.

  14. Thermalization in Quantum Systems

    E-Print Network [OSTI]

    of equilibrated states. iv. Definition for "quantum integrability". v. Many-body localization... vi. Open systems () 0 = ||2 . ETH: is approximately constant in the "energy window" of the state . ETH: For all 10 #12;Integrability 101 Quantum Integrability Classical systems: Definition: A system is integrable

  15. Heat storage system utilizing phase change materials government rights

    DOE Patents [OSTI]

    Salyer, Ival O. (Dayton, OH)

    2000-09-12T23:59:59.000Z

    A thermal energy transport and storage system is provided which includes an evaporator containing a mixture of a first phase change material and a silica powder, and a condenser containing a second phase change material. The silica powder/PCM mixture absorbs heat energy from a source such as a solar collector such that the phase change material forms a vapor which is transported from the evaporator to the condenser, where the second phase change material melts and stores the heat energy, then releases the energy to an environmental space via a heat exchanger. The vapor is condensed to a liquid which is transported back to the evaporator. The system allows the repeated transfer of thermal energy using the heat of vaporization and condensation of the phase change material.

  16. Thermal Storage with Conventional Cooling Systems

    E-Print Network [OSTI]

    Kieninger, R. T.

    1994-01-01T23:59:59.000Z

    approximately $1,000,000. This savings was offset by approximately $200,000 in optimim- tion software and sensors for a net savings of $800,000. Derailed energy cost savings calculations were not completed since the chillern~eaters are gas fired...

  17. Optimal design of ground source heat pump system integrated with phase change cooling storage tank in an office building 

    E-Print Network [OSTI]

    Zhu, N.

    2014-01-01T23:59:59.000Z

    Optimal design of ground source heat pump system integrated with phase change cooling storage tank in an office building Na Zhu*, Yu Lei, Pingfang Hu, Linghong Xu, Zhangning Jiang Department of Building Environment and Equipment Engineering... heat pump system integrated with phase change cooling storage technology could save energy and shift peak load. This paper studied the optimal design of a ground source heat pump system integrated with phase change thermal storage tank in an office...

  18. On the Energy Overhead of Mobile Storage Systems Anirudh Badam*

    E-Print Network [OSTI]

    Narasayya, Vivek

    On the Energy Overhead of Mobile Storage Systems Jing Li Anirudh Badam* Ranveer Chandra* Steven the energy consumption of the storage stack on mobile platforms. We conduct several experiments on mobile plat- forms to analyze the energy requirements of their re- spective storage stacks. Software storage

  19. Sandia Energy - Energy Storage Systems

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiationImplementing Nonlinear757 (1)Tara46 (1)Tara765oSystemsCenterDiffusion-61

  20. Evaluation Framework and Analyses for Thermal Energy Storage Integrated with Packaged Air Conditioning

    SciTech Connect (OSTI)

    Kung, F.; Deru, M.; Bonnema, E.

    2013-10-01T23:59:59.000Z

    Few third-party guidance documents or tools are available for evaluating thermal energy storage (TES) integrated with packaged air conditioning (AC), as this type of TES is relatively new compared to TES integrated with chillers or hot water systems. To address this gap, researchers at the National Renewable Energy Laboratory conducted a project to improve the ability of potential technology adopters to evaluate TES technologies. Major project outcomes included: development of an evaluation framework to describe key metrics, methodologies, and issues to consider when assessing the performance of TES systems integrated with packaged AC; application of multiple concepts from the evaluation framework to analyze performance data from four demonstration sites; and production of a new simulation capability that enables modeling of TES integrated with packaged AC in EnergyPlus. This report includes the evaluation framework and analysis results from the project.

  1. SENSIBLE HEAT STORAGE FOR A SOLAR THERMAL POWER PLANT

    E-Print Network [OSTI]

    Baldwin, Thomas F.

    2011-01-01T23:59:59.000Z

    Summary of the Proposed Solar Power Plant Design The ImpactGenerated by this Solar Power Plant The Impact of StorageVessel Design on the Solar Power Plant III I;l f> (I Q I)

  2. Thermal decomposition study of hydroxylamine nitrate during storage and handling 

    E-Print Network [OSTI]

    Zhang, Chuanji

    2007-09-17T23:59:59.000Z

    decomposition behavior under various conditions and proposed isothermal aging testing and kinetic-based simulation to determine safety boundaries for HAN storage and handling. Specifically, HAN decomposition in the presence of glass, titanium, stainless steel...

  3. SENSIBLE HEAT STORAGE FOR A SOLAR THERMAL POWER PLANT

    E-Print Network [OSTI]

    Baldwin, Thomas F.

    2011-01-01T23:59:59.000Z

    D. , The Central Reciever Power Plant: An Environmental,of the Proposed Solar Power Plant Design The Impact ofGenerated by this Solar Power Plant The Impact of Storage

  4. Thermal decomposition study of hydroxylamine nitrate during storage and handling

    E-Print Network [OSTI]

    Zhang, Chuanji

    2007-09-17T23:59:59.000Z

    Hydroxylamine nitrate (HAN), an important agent for the nuclear industry and the U.S. Army, has been involved in several costly incidents. To prevent similar incidents, the study of HAN safe storage and handling boundary has become extremely...

  5. SENSIBLE HEAT STORAGE FOR A SOLAR THERMAL POWER PLANT

    E-Print Network [OSTI]

    Baldwin, Thomas F.

    2011-01-01T23:59:59.000Z

    of the Proposed Solar Power Plant Design The Impact ofGenerated by this Solar Power Plant The Impact of StorageDesign on the Solar Power Plant III I;l f> (I Q I) II (I

  6. Control Algorithms for Grid-Scale Battery Energy Storage Systems

    E-Print Network [OSTI]

    Control Algorithms for Grid-Scale Battery Energy Storage Systems This report describes development-connected battery energy storage system. The report was submitted by HNEI to the U.S. Department of Energy Office.2: Energy Storage Systems August 2014 HAWAI`I NATURAL ENERGY INSTITUTE School of Ocean & Earth Science

  7. Dynamically Quantifying and Improving the Reliability of Distributed Storage Systems

    E-Print Network [OSTI]

    Bianchini, Ricardo

    Dynamically Quantifying and Improving the Reliability of Distributed Storage Systems Rekha Bachwani-scale storage systems can be significantly improved by using bet- ter reliability metrics and more efficient on a distributed storage system based on erasure codes. We find that MinI improves relia- bility significantly

  8. COBRA-SFS (Spent Fuel Storage): A thermal-hydraulic analysis computer code: Volume 1, Mathematical models and solution method

    SciTech Connect (OSTI)

    Rector, D.R.; Wheeler, C.L.; Lombardo, N.J.

    1986-11-01T23:59:59.000Z

    COBRA-SFS (Spent Fuel Storage) is a general thermal-hydraulic analysis computer code used to predict temperatures and velocities in a wide variety of systems. The code was refined and specialized for spent fuel storage system analyses for the US Department of Energy's Commercial Spent Fuel Management Program. The finite-volume equations governing mass, momentum, and energy conservation are written for an incompressible, single-phase fluid. The flow equations model a wide range of conditions including natural circulation. The energy equations include the effects of solid and fluid conduction, natural convection, and thermal radiation. The COBRA-SFS code is structured to perform both steady-state and transient calculations: however, the transient capability has not yet been validated. This volume describes the finite-volume equations and the method used to solve these equations. It is directed toward the user who is interested in gaining a more complete understanding of these methods.

  9. Advanced research in solar-energy storage

    SciTech Connect (OSTI)

    Luft, W.

    1983-01-01T23:59:59.000Z

    The Solar Energy Storage Program at the Solar Energy Research Institute is reviewed. The program provides research, systems analyses, and economic assessments of thermal and thermochemical energy storage and transport. Current activities include experimental research into very high temperature (above 800/sup 0/C) thermal energy storage and assessment of novel thermochemical energy storage and transport systems. The applications for such high-temperature storage are thermochemical processes, solar thermal-electric power generation, cogeneration of heat and electricity, industrial process heat, and thermally regenerative electrochemical systems. The research results for five high-temperature thermal energy storage technologies and two thermochemical systems are described.

  10. Optimal Deployment of Thermal Energy Storage under Diverse Economic and Climate Conditions

    SciTech Connect (OSTI)

    DeForest, Nicolas; Mendes, Goncalo; Stadler, Michael; Feng, Wei; Lai, Judy; Marnay, Chris

    2014-04-15T23:59:59.000Z

    This paper presents an investigation of the economic benefit of thermal energy storage (TES) for cooling, across a range of economic and climate conditions. Chilled water TES systems are simulated for a large office building in four distinct locations, Miami in the U.S.; Lisbon, Portugal; Shanghai, China; and Mumbai, India. Optimal system size and operating schedules are determined using the optimization model DER-CAM, such that total cost, including electricity and amortized capital costs are minimized. The economic impacts of each optimized TES system is then compared to systems sized using a simple heuristic method, which bases system size as fraction (50percent and 100percent) of total on-peak summer cooling loads. Results indicate that TES systems of all sizes can be effective in reducing annual electricity costs (5percent-15percent) and peak electricity consumption (13percent-33percent). The investigation also indentifies a number of criteria which drive TES investment, including low capital costs, electricity tariffs with high power demand charges and prolonged cooling seasons. In locations where these drivers clearly exist, the heuristically sized systems capture much of the value of optimally sized systems; between 60percent and 100percent in terms of net present value. However, in instances where these drivers are less pronounced, the heuristic tends to oversize systems, and optimization becomes crucial to ensure economically beneficial deployment of TES, increasing the net present value of heuristically sized systems by as much as 10 times in some instances.

  11. Integrated Ice Storage/Sprinkler HVAC System Sharply Cuts Energy Costs and Air-Distribution First Costs

    E-Print Network [OSTI]

    Meckler, G.

    1986-01-01T23:59:59.000Z

    Integrated ice thermal storage/sprinkler HVAC systems developed and applied by the author in several commercial applications shift a major portion of electric utility demand to cheaper off-peak hours, while also reducing significantly the first cost...

  12. Innovative Phase Change Thermal Energy Storage Solution for Baseload Power Phase 1 Final Report

    SciTech Connect (OSTI)

    Qiu, Songgang

    2013-05-15T23:59:59.000Z

    The primary purpose of this project is to develop and validate an innovative, scalable phase change salt thermal energy storage (TES) system that can interface with Infinia’s family of free-piston Stirling engines (FPSE). This TES technology is also appropriate for Rankine and Brayton power converters. Solar TES systems based on latent heat of fusion rather than molten salt temperature differences, have many advantages that include up to an order of magnitude higher energy storage density, much higher temperature operation, and elimination of pumped loops for most of Infinia’s design options. DOE has funded four different concepts for solar phase change TES, including one other Infinia awarded project using heat pipes to transfer heat to and from the salt. The unique innovation in this project is an integrated TES/pool boiler heat transfer system that is the simplest approach identified to date and arguably has the best potential for minimizing the levelized cost of energy (LCOE). The Phase 1 objectives are to design, build and test a 1-hour TES proof-of-concept lab demonstrator integrated with an Infinia 3 kW Stirling engine, and to conduct a preliminary design of a 12-hour TES on-sun prototype.

  13. Temperature-dependent mechanical property testing of nitrate thermal storage salts.

    SciTech Connect (OSTI)

    Everett, Randy L.; Iverson, Brian D.; Broome, Scott Thomas; Siegel, Nathan Phillip; Bronowski, David R.

    2010-09-01T23:59:59.000Z

    Three salt compositions for potential use in trough-based solar collectors were tested to determine their mechanical properties as a function of temperature. The mechanical properties determined were unconfined compressive strength, Young's modulus, Poisson's ratio, and indirect tensile strength. Seventeen uniaxial compression and indirect tension tests were completed. It was found that as test temperature increases, unconfined compressive strength and Young's modulus decreased for all salt types. Empirical relationships were developed quantifying the aforementioned behaviors. Poisson's ratio tends to increase with increasing temperature except for one salt type where there is no obvious trend. The variability in measured indirect tensile strength is large, but not atypical for this index test. The average tensile strength for all salt types tested is substantially higher than the upper range of tensile strengths for naturally occurring rock salts. Interest in raising the operating temperature of concentrating solar technologies and the incorporation of thermal storage has motivated studies on the implementation of molten salt as the system working fluid. Recently, salt has been considered for use in trough-based solar collectors and has been shown to offer a reduction in levelized cost of energy as well as increasing availability (Kearney et al., 2003). Concerns regarding the use of molten salt are often related to issues with salt solidification and recovery from freeze events. Differences among salts used for convective heat transfer and storage are typically designated by a comparison of thermal properties. However, the potential for a freeze event necessitates an understanding of salt mechanical properties in order to characterize and mitigate possible detrimental effects. This includes stress imparted by the expanding salt. Samples of solar salt, HITEC salt (Coastal Chemical Co.), and a low melting point quaternary salt were cast for characterization tests to determine unconfined compressive strength, indirect tensile strength, coefficient of thermal expansion (CTE), Young's modulus, and Poisson's ratio. Experiments were conducted at multiple temperatures below the melting point to determine temperature dependence.

  14. High Energy Density Thermal Batteries: Thermoelectric Reactors for Efficient Automotive Thermal Storage

    SciTech Connect (OSTI)

    None

    2011-11-15T23:59:59.000Z

    HEATS Project: Sheetak is developing a new HVAC system to store the energy required for heating and cooling in EVs. This system will replace the traditional refrigerant-based vapor compressors and inefficient heaters used in today’s EVs with efficient, light, and rechargeable hot-and-cold thermal batteries. The high energy density thermal battery—which does not use any hazardous substances—can be recharged by an integrated solid-state thermoelectric energy converter while the vehicle is parked and its electrical battery is being charged. Sheetak’s converters can also run on the electric battery if needed and provide the required cooling and heating to the passengers—eliminating the space constraint and reducing the weight of EVs that use more traditional compressors and heaters.

  15. Sandia National Laboratories: metal hydride storage thermal-management...

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

    thermal-management issues ECIS, Boeing, Caltrans, and Others: Fuel-Cell-Powered Mobile Lighting Applications On March 29, 2013, in Capabilities, CRF, Energy, Energy Efficiency,...

  16. Plasma-assisted catalytic storage reduction system

    DOE Patents [OSTI]

    Penetrante, Bernardino M. (San Ramon, CA); Vogtlin, George E. (Fremont, CA); Merritt, Bernard T. (Livermore, CA); Brusasco, Raymond M. (Livermore, CA)

    2002-01-01T23:59:59.000Z

    A two-stage method for NO.sub.x reduction in an oxygen-rich engine exhaust comprises a plasma oxidative stage and a storage reduction stage. The first stage employs a non-thermal plasma treatment of NO.sub.x gases in an oxygen-rich exhaust and is intended to convert NO to NO.sub.2 in the presence of O.sub.2 and hydrocarbons. The second stage employs a lean NO.sub.x trap to convert such NO.sub.2 to environmentally benign gases that include N.sub.2, CO.sub.2, and H.sub.2 O. By preconverting NO to NO.sub.2 in the first stage with a plasma, the efficiency of the second stage for NO.sub.x reduction is enhanced. For example, an internal combustion engine exhaust is connected by a pipe to a first chamber in which a non-thermal plasma converts NO to NO.sub.2 in the presence of O.sub.2 and hydrocarbons, such as propene. A flow of such hydrocarbons (C.sub.x H.sub.y) is input from usually a second pipe into at least a portion of the first chamber. The NO.sub.2 from the plasma treatment proceeds to a storage reduction catalyst (lean NO.sub.x trap) that converts NO.sub.2 to N.sub.2, CO.sub.2, and H.sub.2 O, and includes a nitrate-forming catalytic site. The hydrocarbons and NO.sub.x are simultaneously reduced while passing through the lean-NO.sub.x trap catalyst. The method allows for enhanced NO.sub.x reduction in vehicular engine exhausts, particularly those having relatively high sulfur contents.

  17. Plasma-assisted catalytic storage reduction system

    DOE Patents [OSTI]

    Penetrante, Bernardino M. (San Ramon, CA); Vogtlin, George E. (Fremont, CA); Merritt, Bernard T. (Livermore, CA); Brusasco, Raymond M. (Livermore, CA)

    2000-01-01T23:59:59.000Z

    A two-stage method for NO.sub.x reduction in an oxygen-rich engine exhaust comprises a plasma oxidative stage and a storage reduction stage. The first stage employs a non-thermal plasma treatment of NO.sub.x gases in an oxygen-rich exhaust and is intended to convert NO to NO.sub.2 in the presence of O.sub.2 and hydrocarbons. The second stage employs a lean NO.sub.x trap to convert such NO.sub.2 to environmentally benign gases that include N.sub.2, CO.sub.2, and H.sub.2 O. By preconverting NO to NO.sub.2 in the first stage with a plasma, the efficiency of the second stage for NO.sub.x reduction is enhanced. For example, an internal combustion engine exhaust is connected by a pipe to a first chamber in which a non-thermal plasma converts NO to NO.sub.2 in the presence of O.sub.2 and hydrocarbons, such as propene. A flow of such hydrocarbons (C.sub.x H.sub.y) is input from usually a second pipe into at least a portion of the first chamber. The NO.sub.2 from the plasma treatment proceeds to a storage reduction catalyst (lean NO.sub.x trap) that converts NO.sub.2 to N.sub.2, CO.sub.2, and H.sub.2 O, and includes a nitrate-forming catalytic site. The hydrocarbons and NO.sub.x are simultaneously reduced while passing through the lean-NO.sub.x trap catalyst. The method allows for enhanced NO.sub.x reduction in vehicular engine exhausts, particularly those having relatively high sulfur contents.

  18. A parametric and economic investigation of an energy system utilizing aquifer storage 

    E-Print Network [OSTI]

    Tostengard, Stephen Gilbert

    1980-01-01T23:59:59.000Z

    -Chairman of Committee) (Co-Chairman of Committee) (He d. of Department (Member) e ber) December 1980 ABSTRACT A Parametric and Economic Investigation of an Energy System Utilizing Aquifer Storage. (Dec. 1980) Stephen Gilbert Tostengard B. S. , Texas Lutheran... College Co-Chairmen of Advisory Committee: Or. Richard R. Davison Dr. William B. Harris Aquifers may be used as long-term storage facilities i'or heated or chilled water. Computer models were used to simulate the thermal response of an aquafer...

  19. Examining Energy Use in Heterogeneous Archival Storage Systems

    E-Print Network [OSTI]

    Polyzotis, Neoklis (Alkis)

    Examining Energy Use in Heterogeneous Archival Storage Systems Ian F. Adams*, Ethan L. Miller to consume upwards of 35% the total energy used [2]. As systems grow to encompass thousands of storage to power and cool storage devices, and energy costs are no longer the only issues--data center architects

  20. STATE OF CALIFORNIA DISTRIBUTED ENERGY STORAGE DX AC SYSTEMES ACCEPTANCE

    E-Print Network [OSTI]

    STATE OF CALIFORNIA DISTRIBUTED ENERGY STORAGE DX AC SYSTEMES ACCEPTANCE CEC-MECH-14A (Revised 08/09) CALIFORNIA ENERGY COMMISSION CERTIFICATE OF ACCEPTANCE MECH-14A NA7.5.13 Distributed Energy Storage DX AC DISTRIBUTED ENERGY STORAGE DX AC SYSTEMES ACCEPTANCE CEC-MECH-14A (Revised 08/09) CALIFORNIA ENERGY COMMISSION

  1. The Economic Case for Bulk Energy Storage in Transmission Systems

    E-Print Network [OSTI]

    The Economic Case for Bulk Energy Storage in Transmission Systems with High Percentages to Engineer the Future Electric Energy System #12;#12;The Economic Case for Bulk Energy Storage Economic Case for Bulk Energy Storage in Transmission Sys- tems with High Percentages of Renewable

  2. Stationary Applications of Energy Storage Technologies for Transit Systems

    E-Print Network [OSTI]

    Shu, Lily H.

    Stationary Applications of Energy Storage Technologies for Transit Systems Paul Radcliffe, James S, Ontario, Canada paul.radcliffe@utoronto.ca Abstract ­ Stationary energy storage technologies can improve the efficiency of transit systems. In this paper, three different demonstrations of energy storage technologies

  3. In-Vivo Storage System Development Noah Watkins1

    E-Print Network [OSTI]

    Maltzahn, Carlos

    In-Vivo Storage System Development Noah Watkins1 , Carlos Maltzahn1 , Scott Brandt1 , Ian Pye3. The emergence of high-performance open-source storage sys- tems is allowing application and middleware developers to consider non- standard storage system interfaces. In contrast to the practice of virtually

  4. Hybrid Energy Storage System Integration For Vehicles , Hai Zhou

    E-Print Network [OSTI]

    Zhou, Hai

    . Existing in-vehicle Lithium-ion battery systems are bulky, expensive, and unre- liable. Energy storage- plementary energy storage technologies, e.g., Lithium-ion batteries and ultracapacitors. Using physical- sign General Terms Algorithms, Design, Experimentation Keywords Energy Storage System, Battery

  5. Exploiting Redundancy to Conserve Energy in Storage Systems

    E-Print Network [OSTI]

    Bianchini, Ricardo

    Exploiting Redundancy to Conserve Energy in Storage Systems Eduardo Pinheiro Rutgers University redundancy configura- tion for new energy-aware storage systems. To study Diverted Ac- cesses for realistic, and wide-area storage utilities, con- sume significant amounts of energy. For example, one report indi

  6. The assessment of battery-ultracapacitor hybrid energy storage systems

    E-Print Network [OSTI]

    He, Yiou

    2014-01-01T23:59:59.000Z

    Battery-ultracapacitors hybrid energy storage systems (ESS) could combine the high power density and high life cycle of ultracapacitors with the high energy density of batteries, which forms a promising energy storage ...

  7. Information storage capacity of discrete spin systems

    E-Print Network [OSTI]

    Beni Yoshida

    2012-12-24T23:59:59.000Z

    Understanding the limits imposed on information storage capacity of physical systems is a problem of fundamental and practical importance which bridges physics and information science. There is a well-known upper bound on the amount of information that can be stored reliably in a given volume of discrete spin systems which are supported by gapped local Hamiltonians. However, all the previously known systems were far below this theoretical bound, and it remained open whether there exists a gapped spin system that saturates this bound. Here, we present a construction of spin systems which saturate this theoretical limit asymptotically by borrowing an idea from fractal properties arising in the Sierpinski triangle. Our construction provides not only the best classical error-correcting code which is physically realizable as the energy ground space of gapped frustration-free Hamiltonians, but also a new research avenue for correlated spin phases with fractal spin configurations.

  8. Information storage capacity of discrete spin systems

    SciTech Connect (OSTI)

    Yoshida, Beni, E-mail: rouge@caltech.edu

    2013-11-15T23:59:59.000Z

    Understanding the limits imposed on information storage capacity of physical systems is a problem of fundamental and practical importance which bridges physics and information science. There is a well-known upper bound on the amount of information that can be stored reliably in a given volume of discrete spin systems which are supported by gapped local Hamiltonians. However, all the previously known systems were far below this theoretical bound, and it remained open whether there exists a gapped spin system that saturates this bound. Here, we present a construction of spin systems which saturate this theoretical limit asymptotically by borrowing an idea from fractal properties arising in the Sierpinski triangle. Our construction provides not only the best classical error-correcting code which is physically realizable as the energy ground space of gapped frustration-free Hamiltonians, but also a new research avenue for correlated spin phases with fractal spin configurations. -- Highlights: •We propose a spin model with fractal ground states and study its coding properties. •We show that the model asymptotically saturates a theoretical limit on information storage capacity. •We discuss its relations to various theoretical physics problems.

  9. Hydrogen Storage Systems Analysis Meeting: Summary Report, March...

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

    Meeting: Summary Report, March 29, 2005 Hydrogen Storage Systems Analysis Meeting: Summary Report, March 29, 2005 This report highlights DOE's systems analysis work related to...

  10. Comparison of domestic olivine and European magnesite for electrically charged thermal energy storage

    SciTech Connect (OSTI)

    Laster, W.R.; Gay, B.M.; Palmour, H.; Schoenhals, R.J.

    1982-01-01T23:59:59.000Z

    Electrically charged thermal energy storage (TES) heaters employing high heat capacity ceramic refractories for sensible heat storage have been in use in Europe for several years. With these devices, low cost off-peak electrical energy is stored by heating a storage core composed of ceramic material to approximately 800/sup 0/C. During the peak period, no electrical energy is used as the building heating needs are supplied by extracting the stored energy from the core by forced air circulation. The recent increase in use of off-peak TES units in the U.S. has led to the search for a domestic supply of high heat capacity ceramic refractory material. North Carolina's extensive but underutilized supply of refractory grade olivine has been proposed as a source of storage material for these units. In this paper the suitability of North Carolina olivine for heat storage applications is assessed by comparing its thermal performance with that of European materials. Using the method of ASHRAE Standard 94.2, the thermal performance of two commercially available room-size TES units was determined experimentally with two different storage materials, North Carolina olivine and German magnesite. Comparisons are made and conclusions are drawn.

  11. Micro/Nano-Scale Phase Change Systems for Thermal Management and Solar Energy Conversion Applications

    E-Print Network [OSTI]

    Coso, Dusan

    2013-01-01T23:59:59.000Z

    Storage of Solar Thermal Energy,” Solar Energy, 18 (3), pp.Organometallic Frames for Solar Energy Storage, Berkeley. [Nanotubes as High-Energy Density Solar Thermal Fuels,” Nano

  12. Method of making improved gas storage carbon with enhanced thermal conductivity

    DOE Patents [OSTI]

    Burchell, Timothy D. (Oak Ridge, TN); Rogers, Michael R. (Knoxville, TN)

    2002-11-05T23:59:59.000Z

    A method of making an adsorbent carbon fiber based monolith having improved methane gas storage capabilities is disclosed. Additionally, the monolithic nature of the storage carbon allows it to exhibit greater thermal conductivity than conventional granular activated carbon or powdered activated carbon storage beds. The storage of methane gas is achieved through the process of physical adsorption in the micropores that are developed in the structure of the adsorbent monolith. The disclosed monolith is capable of storing greater than 150 V/V of methane [i.e., >150 STP (101.325 KPa, 298K) volumes of methane per unit volume of storage vessel internal volume] at a pressure of 3.5 MPa (500 psi).

  13. New York's Energy Storage System Gets Recharged

    Broader source: Energy.gov [DOE]

    Jonathan Silver and Matt Rogers on a major breakthrough for New York state's energy storage capacity.

  14. Micro/Nano-Scale Phase Change Systems for Thermal Management and Solar Energy Conversion Applications

    E-Print Network [OSTI]

    Coso, Dusan

    2013-01-01T23:59:59.000Z

    on Sustainable thermal Energy Storage Technologies, Part I:of various energy storage technologies. Here only batterieseffective solar energy storage technologies makes the sun,

  15. Legal and regulatory issues affecting the aquifer thermal energy storage concept

    SciTech Connect (OSTI)

    Hendrickson, P.L.

    1980-10-01T23:59:59.000Z

    A number of legal and regulatory issus that potentially can affect implementation of the Aquifer Thermal Energy Storage (ATES) concept are examined. This concept involves the storage of thermal energy in an underground aquifer until a later date when it can be effectively utilized. Either heat energy or chill can be stored. Potential end uses of the energy include district space heating and cooling, industrial process applications, and use in agriculture or aquaculture. Issues are examined in four categories: regulatory requirements, property rights, potential liability, and issues related to heat or chill delivery.

  16. Phase Change Materials for Thermal Energy Storage in Concentrated Solar Thermal Power Plants

    E-Print Network [OSTI]

    Hardin, Corey Lee

    2011-01-01T23:59:59.000Z

    FOR CONCENTRATING SOLAR POWER PLANTS,” Eurosun 2010, Graz,STUDY FOR SOLAR THERMAL POWER PLANTS, Ottawa, Ontario: 1999.Concentrated Solar Thermal Power Plants A Thesis submitted

  17. Project Profile: Thermochemical Heat Storage for CSP Based on...

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

    Multivalent Metal Oxides General Atomics logo General Atomics (GA), under the Thermal Storage FOA, is developing a high-density thermochemical heat storage system based on solid...

  18. Sandia Energy - Energy Storage Components and Systems

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItemResearch > TheNuclear Press ReleasesInAppliedEnergy Storage Components and Systems

  19. Large Scale Energy Storage: From Nanomaterials to Large Systems

    E-Print Network [OSTI]

    Fisher, Frank

    Large Scale Energy Storage: From Nanomaterials to Large Systems Wednesday October 26, 2011, Babbio energy storage devices. Specifically, this talk discusses 1) the challenges for grid scale of emergent technologies with ultralow costs on new energy storage materials and mechanisms. Dr. Jun Liu

  20. Using Storage To Control Uncertainty in Power Systems

    E-Print Network [OSTI]

    Using Storage To Control Uncertainty in Power Systems Glyn Eggar Department of Actuarial the simplest case 5-10mins · Questions 2 #12;Disclaimer 3 #12;Motivation · Can we use storage to control uncertainty in the electricity network? · What sort of storage are we even talking about here? · How much

  1. Power Systems Engineering Research Center Integration of Storage Devices into Power Systems

    E-Print Network [OSTI]

    Van Veen, Barry D.

    of storage technology have led to wider deployment of storage technologies. In this project we developed energy sources into a power system while improving overall system reliability. Storage also hasPower Systems Engineering Research Center Integration of Storage Devices into Power Systems

  2. Integrated Vehicle Thermal Management Systems (VTMS) Analysis...

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

    Systems (VTMS) AnalysisModeling Integrated Vehicle Thermal Management Systems (VTMS) AnalysisModeling 2009 DOE Hydrogen Program and Vehicle Technologies Program Annual Merit...

  3. Operating Experience and Economic Assessment of Commercial and Industrial Cool Storage Systems - TVA Case Study

    E-Print Network [OSTI]

    Sieber, R. E.; Dahmus, A. B.

    1985-01-01T23:59:59.000Z

    Thermal storage systems offer utilities a means to change the energy use patterns of both residential and commercial and industrial (C&I) customers by moving water-heating and space-conditioning loads from peak to offpeak periods. Benefits from...

  4. Hydrogen Storage Systems Analysis Meeting 955 L'Enfant Plaza North, SW, Suite 6000

    E-Print Network [OSTI]

    , engineering, and optimization of reactors, including consideration of hybrid approaches, materials properties of a hybrid (elevated pressure, lowered temperature) activated carbon hydrogen storage system. Representatives, and thermal management; and life-cycle analyses, including energy balances, life-cycle costs, environmental

  5. Loss analysis of thermal reservoirs for electrical energy storage schemes

    E-Print Network [OSTI]

    White, Alexander

    2011-05-14T23:59:59.000Z

    phase. HX1 and HX2 are heat exchangers used to reject heat at near-ambient conditions. The compressor, C, and expander, E, may be turbomachines as in Ref. [5] or reciprocating devices, as in Ref. [4] 33 2 Schematic view of heat transfer within... are heat exchangers used to reject heat at near-ambient conditions. The compressor, C, and expander, E, may be turboma- chines as in Ref. [5] or reciprocating devices, as in Ref. [4] 33 T2 x hot 1 T ? T ? T x gas front storage m edia Tg + Tg sT Q . ? Tg...

  6. Reducing Energy Costs And Minimizing Capital Requirements: Case Studies of Thermal Energy Storage (TES)

    E-Print Network [OSTI]

    Andrepont, J. S.

    2007-01-01T23:59:59.000Z

    , and thus during those times when power has its highest cost or value. Thermal Energy Storage (TES) provides a means of de-coupling the generation of cooling from the provision of cooling to the peak cooling loads. In this manner, peak power demand...

  7. External review of the thermal energy storage (TES) cogeneration study assumptions. Final report

    SciTech Connect (OSTI)

    Lai, B.Y.; Poirier, R.N. [Chicago Bridge and Iron Technical Services Co., Plainfield, IL (United States)

    1996-08-01T23:59:59.000Z

    This report is to provide a detailed review of the basic assumptions made in the design, sizing, performance, and economic models used in the thermal energy storage (TES)/cogeneration feasibility studies conducted by Pacific Northwest Laboratory (PNL) staff. This report is the deliverable required under the contract.

  8. Regional assessment of aquifers for thermal-energy storage. Volume 2. Regions 7 through 12

    SciTech Connect (OSTI)

    Not Available

    1981-06-01T23:59:59.000Z

    This volume contains information on the geologic and hydrologic framework, major aquifers, aquifers which are suitable and unsuitable for annual thermal energy storage (ATES) and the ATES potential of the following regions of the US: Unglaciated Central Region; Glaciated Appalachians, Unglaciated Appalachians; Coastal Plain; Hawaii; and Alaska. (LCL)

  9. Regional assessment of aquifers for thermal energy storage. Volume 1. Regions 1 through 6

    SciTech Connect (OSTI)

    Not Available

    1981-06-01T23:59:59.000Z

    This volume contains information on the geologic and hydrologic framework, major aquifers, aquifers which are suitable and unsuitable for annual thermal energy storage (ATES) and the ATES potential of the following regions of the US: the Western Mountains; Alluvial Basins; Columbia LAVA Plateau; Colorado Plateau; High Plains; and Glaciated Central Region. (LCL)

  10. Energy Storage Systems 2010 Update Conference Presentations ...

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

    chaired by DOE's Imre Gyuk, are below. ESS 2010 Update Conference - UltraBattery Grid Storage - John Wood, Ecoult.pdf ESS 2010 Update Conference - PV Plus Storage for Simultaneous...

  11. Energy Storage Systems Program Report for FY98

    SciTech Connect (OSTI)

    Butler, P.C.

    1999-04-01T23:59:59.000Z

    Sandia National Laboratories, New Mexico, conducts the Energy Storage Systems Program, which is sponsored by the U.S. Department of Energy's Office of Power Technologies. The goal of this program is to collaborate with industry in developing cost-effective electric energy storage systems for many high-value stationary applications. Sandia National Laboratories is responsible for the engineering analyses, contracted development and testing of energy storage components and systems. This report details the technical achievements realized during fiscal year 1998.

  12. Energy Storage Systems Program Report for FY99

    SciTech Connect (OSTI)

    BOYES,JOHN D.

    2000-06-01T23:59:59.000Z

    Sandia National Laboratories, New Mexico, conducts the Energy Storage Systems Program, which is sponsored by the US Department of Energy's Office of Power Technologies. The goal of this program is to develop cost-effective electric energy storage systems for many high-value stationary applications in collaboration with academia and industry. Sandia National Laboratories is responsible for the engineering analyses, contracted development, and testing of energy storage components and systems. This report details the technical achievements realized during fiscal year 1999.

  13. Energy storage systems program report for FY1996

    SciTech Connect (OSTI)

    Butler, P.C.

    1997-05-01T23:59:59.000Z

    Sandia National Laboratories, New Mexico, conducts the Energy Storage Systems Program, which is sponsored by the US Department of Energy`s Office of Utility Technologies. The goal of this program is to assist industry in developing cost-effective energy storage systems as a resource option by 2000. Sandia is responsible for the engineering analyses, contracted development, and testing of energy storage systems for stationary applications. This report details the technical achievements realized during fiscal year 1996.

  14. Cost analysis of energy storage systems for electric utility applications

    SciTech Connect (OSTI)

    Akhil, A. [Sandia National Lab., Albuquerque, NM (United States); Swaminathan, S.; Sen, R.K. [R.K. Sen & Associates, Inc., Bethesda, MD (United States)

    1997-02-01T23:59:59.000Z

    Under the sponsorship of the Department of Energy, Office of Utility Technologies, the Energy Storage System Analysis and Development Department at Sandia National Laboratories (SNL) conducted a cost analysis of energy storage systems for electric utility applications. The scope of the study included the analysis of costs for existing and planned battery, SMES, and flywheel energy storage systems. The analysis also identified the potential for cost reduction of key components.

  15. Mechanism of Thermal Reversal of the (Fulvalene)tetracarbonyldiruthenium Photoisomerization: Toward Molecular Solar-Thermal Energy Storage

    SciTech Connect (OSTI)

    Kanai, Y; Srinivasan, V; Meier, S K; Vollhardt, K P; Grossman, J C

    2010-02-18T23:59:59.000Z

    In the currently intensifying quest to harness solar energy for the powering of our planet, most efforts are centered around photoinduced generic charge separation, such as in photovoltaics, water splitting, other small molecule activation, and biologically inspired photosynthetic systems. In contrast, direct collection of heat from sunlight has received much less diversified attention, its bulk devoted to the development of concentrating solar thermal power plants, in which mirrors are used to focus the sun beam on an appropriate heat transfer material. An attractive alternative strategy would be to trap solar energy in the form of chemical bonds, ideally through the photoconversion of a suitable molecule to a higher energy isomer, which, in turn, would release the stored energy by thermal reversal. Such a system would encompass the essential elements of a rechargeable heat battery, with its inherent advantages of storage, transportability, and use on demand. The underlying concept has been explored extensively with organic molecules (such as the norbornadiene-quadricyclane cycle), often in the context of developing photoswitches. On the other hand, organometallic complexes have remained relatively obscure in this capacity, despite a number of advantages, including expanded structural tunability and generally favorable electronic absorption regimes. A highly promising organometallic system is the previously reported, robust photo-thermal fulvalene (Fv) diruthenium couple 1 {l_reversible} 2 (Scheme 1). However, although reversible and moderately efficient, lack of a full, detailed atom-scale understanding of its key conversion and storage mechanisms have limited our ability to improve on its performance or identify optimal variants, such as substituents on the Fv, ligands other than CO, and alternative metals. Here we present a theoretical investigation, in conjunction with corroborating experiments, of the mechanism for the heat releasing step of 2 {yields} 1 and its Fe (4) and Os (6) relatives. The results of the combined study has enabled a rigorous interpretation of earlier and new experimental measurements and paint a surprising picture. First-principles calculations were employed based on spin unrestricted density functional theory (DFT) with a non-empirical gradient corrected exchange-correlation functional. Ultrasoft pseudopotentials were used to describe the valence-core interactions of electrons, including scalar relativistic effects of the core. Wavefunctions and charge densities were expanded in plane waves with kinetic energies up to 25 and 200 Rydberg, respectively. Reaction pathways were delineated with the string method, as implemented within the Car-Parrinello approach. This method allows for the efficient determination of the minimum energy path (MEP) of atomistic transitions and thus also saddle points (transition states, TSs), which are the energy maxima along the MEP. All geometries were optimized until all forces on the atoms were less than 0.02 eV/{angstrom}. The calculated structures of 1 and 2 were in good agreement with their experimental counterparts.

  16. THERMAL EVALUATION OF DRUM TYPE RADIOACTIVE MATERIAL PACKAGING ARRAYS IN STORAGE

    SciTech Connect (OSTI)

    Gupta, N

    2009-04-27T23:59:59.000Z

    Drum type packages are routinely used to transport radioactive material (RAM) in the U.S. Department of Energy (DOE) complex. These packages are designed to meet the federal regulations described in 10 CFR 71.[1] In recent years, there has been a greater need to use these packagings to store the excess fissile material, especially plutonium for long term storage. While the design requirements for safe transportation of these packagings are well defined, the requirements for safe long term storage are not well established. Since the RAM contents in the packagings produce decay heat, it is important that they are stored carefully to prevent overheating of the containment vessel (CV) seals to prevent any leakage and the impact limiter to maintain the package structural integrity. This paper analyzes different storage arrays for a typical 9977 packaging for thermal considerations and makes recommendations for their safe storage under normal operating conditions.

  17. Test report : Raytheon / KTech RK30 energy storage system.

    SciTech Connect (OSTI)

    Rose, David Martin; Schenkman, Benjamin L.; Borneo, Daniel R.

    2013-10-01T23:59:59.000Z

    The Department of Energy Office of Electricity (DOE/OE), Sandia National Laboratories (SNL) and the Base Camp Integration Lab (BCIL) partnered together to incorporate an energy storage system into a microgrid configured Forward Operating Base to reduce the fossil fuel consumption and to ultimately save lives. Energy storage vendors will be sending their systems to SNL Energy Storage Test Pad (ESTP) for functional testing and then to the BCIL for performance evaluation. The technologies that will be tested are electro-chemical energy storage systems comprising of lead acid, lithium-ion or zinc-bromide. Raytheon/KTech has developed an energy storage system that utilizes zinc-bromide flow batteries to save fuel on a military microgrid. This report contains the testing results and some limited analysis of performance of the Raytheon/KTech Zinc-Bromide Energy Storage System.

  18. Hydrogen Storage Systems Anlaysis Working Group Meeting, December...

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

    Anlaysis Working Group Meeting, December 12, 2006 Hydrogen Storage Systems Anlaysis Working Group Meeting, December 12, 2006 This document provides a summary of the Hydrogen...

  19. Hydrogen Storage Systems Analysis Working Group Meeting: Summary...

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

    to bring together the DOE research community involved in systems analysis of hydrogen storage materials and processes. ssawgsummaryreport.pdf More Documents & Publications...

  20. Hydrogen Storage Systems Analysis Working Group Meeting: Summary...

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

    Hydrogen Storage Systems Analysis Working Group Meeting Argonne DC Offices L'Enfant Plaza, Washington, DC December 4, 2007 SUMMARY REPORT Compiled by Romesh Kumar Argonne National...

  1. Project Profile: Innovative Phase Change Thermal Energy Storage Solution

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn April 23, 2014, an OHASeptember 2010 | DepartmentEnergyThermal Energy

  2. Project Profile: Innovative Thermal Energy Storage for Baseload Solar Power

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn April 23, 2014, an OHASeptember 2010 | DepartmentEnergyThermal EnergyGeneration |

  3. PRIMAL AND DUAL METHODS FOR UNIT COMMITMENT IN A HYDRO-THERMAL POWER SYSTEM

    E-Print Network [OSTI]

    Römisch, Werner

    PRIMAL AND DUAL METHODS FOR UNIT COMMITMENT IN A HYDRO-THERMAL POWER SYSTEM R. Gollmer1 , A. Moller comprising thermal and pumped-storage hydro units a large-scale mixed-integer optimization model is developed aims at the cost optimal scheduling of on/o decisions and output levels for generating units. The power

  4. Electrical Energy Storage for Renewable Energy Systems

    SciTech Connect (OSTI)

    Helms, C. R.; Cho, K. J.; Ferraris, John; Balkus, Ken; Chabal, Yves; Gnade, Bruce; Rotea, Mario; Vasselli, John

    2012-08-31T23:59:59.000Z

    This program focused on development of the fundamental understanding necessary to significantly improve advanced battery and ultra-capacitor materials and systems to achieve significantly higher power and energy density on the one hand, and significantly lower cost on the other. This program spanned all the way from atomic-level theory, to new nanomaterials syntheses and characterization, to system modeling and bench-scale technology demonstration. Significant accomplishments are detailed in each section. Those particularly noteworthy include: • Transition metal silicate cathodes with 2x higher storage capacity than commercial cobalt oxide cathodes were demonstrated. • MnO? nanowires, which are a promising replacement for RuO?, were synthesized • PAN-based carbon nanofibers were prepared and characterized with an energy density 30-times higher than current ultracapacitors on the market and comparable to lead-acid batteries • An optimization-based control strategy for real-time power management of battery storage in wind farms was developed and demonstrated. • PVDF films were developed with breakdown strengths of > 600MVm?ą, a maximum energy density of approximately 15 Jcm?ł, and an average dielectric constant of 9.8 (±1.2). Capacitors made from these films can support a 10-year lifetime operating at an electric field of 200 MV m?ą. This program not only delivered significant advancements in fundamental understanding and new materials and technology, it also showcased the power of the cross-functional, multi-disciplinary teams at UT Dallas and UT Tyler for such work. These teams are continuing this work with other sources of funding from both industry and government.

  5. Building Energy Information Systems: State of the Technology and User Case Studies

    E-Print Network [OSTI]

    Granderson, Jessica

    2010-01-01T23:59:59.000Z

    for example via thermal energy storage systems. The fewis affected by the thermal energy storage system. 3.1.2without use of the Thermal Energy Storage system Table 1: UC

  6. Project Profile: Novel Molten Salts Thermal Energy Storage for...

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

    Gauge round-trip efficiency. The research team is also conducting investigations of corrosion behavior and material selections for a laboratory-scale TES system, as well as...

  7. Energy dispatch schedule optimization and cost benefit analysis for grid-connected, photovoltaic-battery storage systems

    E-Print Network [OSTI]

    Nottrott, A.; Kleissl, J.; Washom, B.

    2013-01-01T23:59:59.000Z

    photovoltaic systems with battery storages control based onconnected, photovoltaic-battery storage systems A. Nottrott,combined photovoltaic-battery storage system (PV+ system).

  8. Micro/Nano-Scale Phase Change Systems for Thermal Management and Solar Energy Conversion Applications

    E-Print Network [OSTI]

    Coso, Dusan

    2013-01-01T23:59:59.000Z

    S. a. , 2004, “Solar Thermal Collectors and Applications,”86] Schnatbaum L. , 2009, “Solar Thermal Power Plants,” Thefor Storage of Solar Thermal Energy,” Solar Energy, 18 (3),

  9. Thermal Storage Applications for Commercial/Industrial Facilities 

    E-Print Network [OSTI]

    Knipp, R. L.

    1986-01-01T23:59:59.000Z

    , if extremely low temperatures are necessary, the SEC0 system is applicable. But 2 for normal refr.igerated warehouse temperature ranges of -10?F, the effic.iency disadvantage would make this system impractical at today's energy costs. However, energy rates...

  10. Utility Battery Storage Systems Program report for FY93

    SciTech Connect (OSTI)

    Butler, P.C.

    1994-02-01T23:59:59.000Z

    Sandia National Laboratories, New Mexico, conducts the Utility Battery Storage Systems Program, which is sponsored by the US Department of Energy`s Office of Energy Management. In this capacity, Sandia is responsible for the engineering analyses, contract development, and testing of rechargeable batteries and systems for utility-energy-storage applications. This report details the technical achievements realized during fiscal year 1993.

  11. Superconducting magnetic energy storage for asynchronous electrical systems

    DOE Patents [OSTI]

    Boenig, H.J.

    1984-05-16T23:59:59.000Z

    It is an object of the present invention to provide superconducting magnetic energy storage for a plurality of asynchronous electrical systems. It is a further object of the present invention to provide load leveling and stability improvement in a plurality of independent ac systems using a single superconducting magnetic energy storage coil.

  12. Power Electronic Thermal System Performance and Integration ...

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

    -- Washington D.C. ape13bennion.pdf More Documents & Publications Power Electronic Thermal System Performance and Integration Integrated Power Module Cooling Vehicle...

  13. Summary of: Simulating the Value of Concentrating Solar Power with Thermal Energy Storage in a Production Cost Model (Presentation)

    SciTech Connect (OSTI)

    Denholm, P.; Hummon, M.

    2013-02-01T23:59:59.000Z

    Concentrating solar power (CSP) deployed with thermal energy storage (TES) provides a dispatchable source of renewable energy. The value of CSP with TES, as with other potential generation resources, needs to be established using traditional utility planning tools. Production cost models, which simulate the operation of grid, are often used to estimate the operational value of different generation mixes. CSP with TES has historically had limited analysis in commercial production simulations. This document describes the implementation of CSP with TES in a commercial production cost model. It also describes the simulation of grid operations with CSP in a test system consisting of two balancing areas located primarily in Colorado.

  14. Southern company energy storage study : a study for the DOE energy storage systems program.

    SciTech Connect (OSTI)

    Ellison, James; Bhatnagar, Dhruv; Black, Clifton [Southern Company Services, Inc., Birmingham, AL; Jenkins, Kip [Southern Company Services, Inc., Birmingham, AL

    2013-03-01T23:59:59.000Z

    This study evaluates the business case for additional bulk electric energy storage in the Southern Company service territory for the year 2020. The model was used to examine how system operations are likely to change as additional storage is added. The storage resources were allowed to provide energy time shift, regulation reserve, and spinning reserve services. Several storage facilities, including pumped hydroelectric systems, flywheels, and bulk-scale batteries, were considered. These scenarios were tested against a range of sensitivities: three different natural gas price assumptions, a 15% decrease in coal-fired generation capacity, and a high renewable penetration (10% of total generation from wind energy). Only in the elevated natural gas price sensitivities did some of the additional bulk-scale storage projects appear justifiable on the basis of projected production cost savings. Enabling existing peak shaving hydroelectric plants to provide regulation and spinning reserve, however, is likely to provide savings that justify the project cost even at anticipated natural gas price levels. Transmission and distribution applications of storage were not examined in this study. Allowing new storage facilities to serve both bulk grid and transmission/distribution-level needs may provide for increased benefit streams, and thus make a stronger business case for additional storage.

  15. MRS (monitored retrievable storage) systems study Task G report: The role and functions of surface storage of radioactive material in the federal waste management system

    SciTech Connect (OSTI)

    Wood, T.W.; Short, S.M.; Woodruff, M.G.; Altenhofen, M.K.; MacKay, C.A.

    1989-04-01T23:59:59.000Z

    This is one of nine studies undertaken by contractors to the US Department of Energy (DOE), Office of Civilian Radioactive Waste Management (OCRWM), to provide a technical basis for re-evaluating the role of a monitored retrievable storage (MRS) facility. The study investigates the functions that could be performed by surface storage of radioactive material within the federal radioactive waste management system, including enabling acceptance of spent fuel from utility owners, scheduling of waste-preparation processes within the system, enhancement of system operating reliability, and conditioning the thermal (decay heat) characteristics of spent fuel emplaced in a repository. The analysis focuses particularly on the effects of storage capacity and DOE acceptance schedule on power reactors. Figures of merit developed include the storage capacity (in metric tons of uranium (MTU)) required to be added beyond currently estimated maximum spent fuel storage capacities and its associated cost, and the number of years that spent fuel pools would remain open after last discharge (in pool-years) and the cost of this period of operation. 27 refs., 36 figs., 18 tabs.

  16. Advanced Liquid Natural Gas Onboard Storage System

    SciTech Connect (OSTI)

    Greg Harper; Charles Powars

    2003-10-31T23:59:59.000Z

    Cummins Westport Incorporated (CWI) has designed and developed a liquefied natural gas (LNG) vehicle fuel system that includes a reciprocating pump with the cold end submerged in LNG contained in a vacuum-jacketed tank. This system was tested and analyzed under the U.S. Department of Energy (DOE) Advanced LNG Onboard Storage System (ALOSS) program. The pumped LNG fuel system developed by CWI and tested under the ALOSS program is a high-pressure system designed for application on Class 8 trucks powered by CWI's ISX G engine, which employs high-pressure direct injection (HPDI) technology. A general ALOSS program objective was to demonstrate the feasibility and advantages of a pumped LNG fuel system relative to on-vehicle fuel systems that require the LNG to be ''conditioned'' to saturation pressures that exceeds the engine fuel pressure requirements. These advantages include the capability to store more fuel mass in given-size vehicle and station tanks, and simpler lower-cost LNG refueling stations that do not require conditioning equipment. Pumped LNG vehicle fuel systems are an alternative to conditioned LNG systems for spark-ignition natural gas and port-injection dual-fuel engines (which typically require about 100 psi), and they are required for HPDI engines (which require over 3,000 psi). The ALOSS program demonstrated the feasibility of a pumped LNG vehicle fuel system and the advantages of this design relative to systems that require conditioning the LNG to a saturation pressure exceeding the engine fuel pressure requirement. LNG tanks mounted on test carts and the CWI engineering truck were repeatedly filled with LNG saturated at 20 to 30 psig. More fuel mass was stored in the vehicle tanks as well as the station tank, and no conditioning equipment was required at the fueling station. The ALOSS program also demonstrated the general viability and specific performance of the CWI pumped LNG fuel system design. The system tested as part of this program is designed to be used on Class 8 trucks with CWI ISX G HPDI engines. Extensive test cart and engineering truck tests of the pump demonstrated good durability and the high-pressure performance needed for HPDI application. The LNG tanks manufactured by Taylor-Wharton passed SAE J2343 Recommended Practice drop tests and accelerated road-load vibration tests. NER and hold-time tests produced highly consistent results. Additional tests confirmed the design adequacy of the liquid level sensor, vaporizer, ullage volume, and other fuel system components. While the testing work performed under this program focused on a high-pressure pumped LNG fuel system design, the results also validate the feasibility of a low-pressure pumped fuel system. A low-pressure pumped fuel system could incorporate various design refinements including a simpler and lighter-weight pump, which would decrease costs somewhat relative to a high-pressure system.

  17. Battery energy storage systems life cycle costs case studies

    SciTech Connect (OSTI)

    Swaminathan, S.; Miller, N.F.; Sen, R.K. [SENTECH, Inc., Bethesda, MD (United States)

    1998-08-01T23:59:59.000Z

    This report presents a comparison of life cycle costs between battery energy storage systems and alternative mature technologies that could serve the same utility-scale applications. Two of the battery energy storage systems presented in this report are located on the supply side, providing spinning reserve and system stability benefits. These systems are compared with the alternative technologies of oil-fired combustion turbines and diesel generators. The other two battery energy storage systems are located on the demand side for use in power quality applications. These are compared with available uninterruptible power supply technologies.

  18. Preliminary Thermal Modeling of HI-STORM 100 Storage Modules at Diablo Canyon Power Plant ISFSI

    SciTech Connect (OSTI)

    Cuta, Judith M.; Adkins, Harold E.

    2014-04-17T23:59:59.000Z

    Thermal analysis is being undertaken at Pacific Northwest National Laboratory (PNNL) in support of inspections of selected storage modules at various locations around the United States, as part of the Used Fuel Disposition Campaign of the U.S. Department of Energy, Office of Nuclear Energy (DOE-NE) Fuel Cycle Research and Development. This report documents pre-inspection predictions of temperatures for two modules at the Diablo Canyon Power Plant ISFSI identified as candidates for inspection. These are HI-STORM 100 modules of a site-specific design for storing PWR 17x17 fuel in MPC-32 canisters. The temperature predictions reported in this document were obtained with detailed COBRA-SFS models of these storage systems, with the following boundary conditions and assumptions. • storage module overpack configuration based on FSAR documentation of HI-STORM100S-218, Version B; due to unavailability of site-specific design data for Diablo Canyon ISFSI modules • Individual assembly and total decay heat loadings for each canister, based on at-loading values provided by PG&E, “aged” to time of inspection using ORIGEN modeling o Special Note: there is an inherent conservatism of unquantified magnitude – informally estimated as up to approximately 20% -- in the utility-supplied values for at-loading assembly decay heat values • Axial decay heat distributions based on a bounding generic profile for PWR fuel. • Axial location of beginning of fuel assumed same as WE 17x17 OFA fuel, due to unavailability of specific data for WE17x17 STD and WE 17x17 Vantage 5 fuel designs • Ambient conditions of still air at 50°F (10°C) assumed for base-case evaluations o Wind conditions at the Diablo Canyon site are unquantified, due to unavailability of site meteorological data o additional still-air evaluations performed at 70°F (21°C), 60°F (16°C), and 40°F (4°C), to cover a range of possible conditions at the time of the inspection. (Calculations were also performed at 80°F (27°C), for comparison with design basis assumptions.) All calculations are for steady-state conditions, on the assumption that the surfaces of the module that are accessible for temperature measurements during the inspection will tend to follow ambient temperature changes relatively closely. Comparisons to the results of the inspections, and post-inspection evaluations of temperature measurements obtained in the specific modules, will be documented in a separate follow-on report, to be issued in a timely manner after the inspection has been performed.

  19. PRELIMINARY REPORT: EFFECTS OF IRRADIATION AND THERMAL EXPOSURE ON ELASTOMERIC SEALS FOR CASK TRANSPORTATION AND STORAGE

    SciTech Connect (OSTI)

    Verst, C.; Skidmore, E.; Daugherty, W.

    2014-05-30T23:59:59.000Z

    A testing and analysis approach to predict the sealing behavior of elastomeric seal materials in dry storage casks and evaluate their ability to maintain a seal under thermal and radiation exposure conditions of extended storage and beyond was developed, and initial tests have been conducted. The initial tests evaluate the aging response of EPDM elastomer O-ring seals. The thermal and radiation exposure conditions of the CASTOR® V/21 casks were selected for testing as this cask design is of interest due to its widespread use, and close proximity of the seals to the fuel compared to other cask designs leading to a relatively high temperature and dose under storage conditions. A novel test fixture was developed to enable compression stress relaxation measurements for the seal material at the thermal and radiation exposure conditions. A loss of compression stress of 90% is suggested as the threshold at which sealing ability of an elastomeric seal would be lost. Previous studies have shown this value to be conservative to actual leakage failure for most aging conditions. These initial results indicate that the seal would be expected to retain sealing ability throughout extended storage at the cask design conditions, though longer exposure times are needed to validate this assumption. The high constant dose rate used in the testing is not prototypic of the decreasingly low dose rate that would occur under extended storage. The primary degradation mechanism of oxidation of polymeric compounds is highly dependent on temperature and time of exposure, and with radiation expected to exacerbate the oxidation.

  20. Hydrogen storage of energy for small power supply systems

    E-Print Network [OSTI]

    Monaghan, Rory F. D. (Rory Francis Desmond)

    2005-01-01T23:59:59.000Z

    Power supply systems for cell phone base stations using hydrogen energy storage, fuel cells or hydrogen-burning generators, and a backup generator could offer an improvement over current power supply systems. Two categories ...

  1. Life Cycle Assessment of Thermal Energy Storage: Two-Tank Indirect and Thermocline

    SciTech Connect (OSTI)

    Heath, G.; Turchi, C.; Burkhardt, J.; Kutscher, C.; Decker, T.

    2009-07-01T23:59:59.000Z

    In the United States, concentrating solar power (CSP) is one of the most promising renewable energy (RE) technologies for reduction of electric sector greenhouse gas (GHG) emissions and for rapid capacity expansion. It is also one of the most price-competitive RE technologies, thanks in large measure to decades of field experience and consistent improvements in design. One of the key design features that makes CSP more attractive than many other RE technologies, like solar photovoltaics and wind, is the potential for including relatively low-cost and efficient thermal energy storage (TES), which can smooth the daily fluctuation of electricity production and extend its duration into the evening peak hours or longer. Because operational environmental burdens are typically small for RE technologies, life cycle assessment (LCA) is recognized as the most appropriate analytical approach for determining their environmental impacts of these technologies, including CSP. An LCA accounts for impacts from all stages in the development, operation, and decommissioning of a CSP plant, including such upstream stages as the extraction of raw materials used in system components, manufacturing of those components, and construction of the plant. The National Renewable Energy Laboratory (NREL) is undertaking an LCA of modern CSP plants, starting with those of parabolic trough design.

  2. Parametric studies and optimisation of pumped thermal electricity storage

    E-Print Network [OSTI]

    McTigue, Joshua; White, Alexander; Markides, Christos N.

    2014-09-11T23:59:59.000Z

    , crucial 12 advantage of reciprocating devices is that, by adjusting valve timings, they can in principle be reversed 13 such that compressors become expanders and vice versa. This means that the same devices can be used for 14 both charge and discharge... Technologies Institute (ETI)? and its proponents estimate that it will attain an overall round-trip 19 efficiency of 75%. Achieving this will require extremely low ‘thermodynamic’ losses in the compressors and 20 expanders, and in the other system components...

  3. Viewing Systems for Large Underground Storage Tanks.

    SciTech Connect (OSTI)

    Heckendorn, F.M., Robinson, C.W., Anderson, E.K. [Westinghouse Savannah River Co., Aiken, SC (United States)], Pardini, A.F. [Westinghouse Hanford Co., Richland, WA (United States)

    1996-12-31T23:59:59.000Z

    Specialized remote video systems have been successfully developed and deployed in a number of large radiological Underground Storage Tanks (USTs)that tolerate the hostile tank interior, while providing high resolution video to a remotely located operator. The deployment is through 100 mm (4 in) tank openings, while incorporating full video functions of the camera, lights, and zoom lens. The usage of remote video minimizes the potential for personnel exposure to radiological and hazardous conditions, and maximizes the quality of the visual data used to assess the interior conditions of both tank and contents. The robustness of this type of remote system has a direct effect on the potential for radiological exposure that personnel may encounter. The USTs typical of the Savannah River and Hanford Department Of Energy - (DOE) sites are typically 4.5 million liter (1.2 million gal) units under earth. or concrete overburden with limited openings to the surface. The interior is both highly contaminated and radioactive with a wide variety of nuclear processing waste material. Some of the tanks are -flammable rated -to Class 1, Division 1,and personnel presence at or near the openings should be minimized. The interior of these USTs must be assessed periodically as part of the ongoing management of the tanks and as a step towards tank remediation. The systems are unique in their deployment technology, which virtually eliminates the potential for entrapment in a tank, and their ability to withstand flammable environments. A multiplicity of components used within a common packaging allow for cost effective and appropriate levels of technology, with radiation hardened components on some units and lesser requirements on other units. All units are completely self contained for video, zoom lens, lighting, deployment,as well as being self purging, and modular in construction.

  4. Innovative Application of Maintenance-Free Phase-Change Thermal Energy Storage for Dish-Engine Solar Power Generation

    SciTech Connect (OSTI)

    Qui, Songgang [Temple University] [Temple University; Galbraith, Ross [Infinia] [Infinia

    2013-01-23T23:59:59.000Z

    This final report summarizes the final results of the Phase II Innovative Application of Maintenance-Free Phase-Change Thermal Energy Storage for Dish-Engine Solar Power Generation project being performed by Infinia Corporation for the U.S. Department of Energy under contract DE-FC36-08GO18157 during the project period of September 1, 2009 - August 30, 2012. The primary objective of this project is to demonstrate the practicality of integrating thermal energy storage (TES) modules, using a suitable thermal salt phase-change material (PCM) as its medium, with a dish/Stirling engine; enabling the system to operate during cloud transients and to provide dispatchable power for 4 to 6 hours after sunset. A laboratory prototype designed to provide 3 kW-h of net electrical output was constructed and tested at Infinia's Ogden Headquarters. In the course of the testing, it was determined that the system's heat pipe network - used to transfer incoming heat from the solar receiver to both the Stirling generator heater head and to the phase change salt - did not perform to expectations. The heat pipes had limited capacity to deliver sufficient heat energy to the generator and salt mass while in a charging mode, which was highly dependent on the orientation of the device (vertical versus horizontal). In addition, the TES system was only able to extract about 30 to 40% of the expected amount of energy from the phase change salt once it was fully molten. However, the use of heat pipes to transfer heat energy to and from a thermal energy storage medium is a key technical innovation, and the project team feels that the limitations of the current device could be greatly improved with further development. A detailed study of manufacturing costs using the prototype TES module as a basis indicates that meeting DOE LCOE goals with this hardware requires significant efforts. Improvement can be made by implementing aggressive cost-down initiatives in design and materials, improving system performance by boosting efficiencies, and by refining cost estimates with vendor quotes in lieu of mass-based approaches. Although the prototype did not fully demonstrate performance and realize projected cost targets, the project team believes that these challenges can be overcome. The test data showed that the performance can be significantly improved by refining the heat pipe designs. However, the project objective for phase 3 is to design and test on sun the field ready systems, the project team feels that is necessary to further refine the prototype heat pipe design in the current prototype TES system before move on to field test units, Phase 3 continuation will not be pursued.

  5. Demand-Side and Supply-Side Load Management: Optimizing with Thermal Energy Storage (TES) for the Restructuring Energy Marketplace

    E-Print Network [OSTI]

    Andrepont, J. S.

    -side regarding power generation. Thermal Energy Storage (TES) can provide the flexibility essential to the economical management of power. In large industrial applications, the added value of TES has been demonstrated, not only in managing operating costs...

  6. Energy Storage Systems 2010 Update Conference Presentations ...

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

    chaired by NETL's Kim Nuhfer, are below. ESS 2010 Update Conference - Low Cost Energy Storage - Ted Wiley, Aquion.pdf Ess 2010 Update Conference - Solid State Li Metal Batteries...

  7. The development of a fullerene based hydrogen storage system

    SciTech Connect (OSTI)

    Brosha, E.L.; Davey, J.R.; Garzon, F.H.; Gottesfeld, S.

    1998-11-01T23:59:59.000Z

    This is the final report of a three-year, Laboratory Directed Research and Development (LDRD) project at Los Alamos National Laboratory (LANL). The project objective was to evaluate hydrogen uptake by fullerene substrates and to probe the potential of the hydrogen/fullerene system for hydrogen fuel storage. As part of this project, the authors have completed and tested a fully automated, computer controlled system for measuring hydrogen uptake that is capable of handling both a vacuum of 1 x 10{sup -6} torr and pressures greater than 200 bars. The authors have first established conditions for significant uptake of hydrogen by fullerenes. Subsequently, hydrogenation and dehydrogenation of pure and catalyst-doped C60 was further studied to probe suitability for hydrogen storage applications. C60 {center_dot} H18.7 was prepared at 100 bar H2 and 400 C, corresponding to hydrogen uptake of 2.6 wt%. Dehydrogenation of C60 {center_dot} H18.7 was studied using thermogravimetric and powder x-ray diffraction analysis. The C60 {center_dot} H18.7 molecule was found to be stable up to 430 C in Ar, at which point the release of hydrogen took place simultaneously with the collapse of the fullerene structure. X-ray diffraction analysis performed on C60 {center_dot} H18.7 samples dehydrogenated at 454 C, 475 C, and 600 C showed an increasing volume fraction of amorphous material due to randomly oriented, single-layer graphine sheets. Evolved gas analysis using gas chromatography and mass spectroscopy confirmed the presence of both H{sub 2} and methane upon dehydrogenation, indicating decomposition of the fullerene. The remaining carbon could not be re-hydrogenated. These results provide the first complete evidence for the irreversible nature of fullerene hydrogenation and for limitations imposed on the hydrogenation/dehydrogenation cycle by the limited thermal stability of the molecular crystal of fullerene.

  8. Thermionic reactor module with thermal-storage reservoir

    SciTech Connect (OSTI)

    Kennel, E.B.

    1987-03-11T23:59:59.000Z

    A thermionic energy conversion system assembly is described, which comprises a fissionable nuclear fuel that surrounds a cylindrical arrangement of thermionic-emitter electrodes that surround corresponding collector electrodes, which in turn surround a cylindrical container of a heat-sink material such as lithium hydride, which can absorb large amounts of waste heat energy through a phase change. The heat-sink material may also act as a nuclear moderator to reduce the amount of required nuclear fuel. A heat pipe is enclosed within the container of heat-sink material to remove waste heat stored in the material. A thermionic energy-conversion module is described which comprises 100 stacked-in-series thermionic-converter assemblies. A complete space-based thermionic nuclear reactor is described which comprises an array of 91 thermionic-converter modules wherein the heat pipes connect to a lithium hydride radiation shield which acts as a further heat sink. The radiation shield connects to radiators to remove the waste heat to space.

  9. A VRLA battery energy storage system for Metlakatla, Alaska

    SciTech Connect (OSTI)

    Miller, N.W.; Zrebiec, R.S.; Delmerico, R.W. [GE Power Systems Engineering, Schenectady, NY (United States); Hunt, G. [GNB Industrial Battery, Lombard, IL (United States); Achenbach, H.A. [Metlakatla Power and Light, AK (United States)

    1996-11-01T23:59:59.000Z

    The emergence of new power electronics and improved battery technology has created renewed interest in Battery Energy Storage Systems (BESS). These new systems provide electric utilities with alternatives to conventional storage technologies, such as pumped hydro. BESs has the potential to provide substantial benefits in terms of energy management, improved voltage, spinning reserve and protection from interruptions when compared to large centralized storage. This paper describes a commercial, economically justified, application of the new Battery Energy Storage Systems which is presently under construction in the Metlakatla Power and Light system. The paper outlines the system performance requirements which lead to consideration of BESS as an option; the economic factors which provided the justification for BESS as an economic alternative; and the overall BES system design and performance.

  10. Systems Engineering of Chemical Hydrogen Storage, Pressure Vessel and Balance of Plant for Onboard Hydrogen Storage

    SciTech Connect (OSTI)

    Brooks, Kriston P.; Simmons, Kevin L.; Weimar, Mark R.

    2014-09-02T23:59:59.000Z

    This is the annual report for the Hydrogen Storage Engineering Center of Excellence project as required by DOE EERE's Fuel Cell Technologies Office. We have been provided with a specific format. It describes the work that was done with cryo-sorbent based and chemical-based hydrogen storage materials. Balance of plant components were developed, proof-of-concept testing performed, system costs estimated, and transient models validated as part of this work.

  11. Molten Salt Nanomaterials for Thermal Energy Storage and Concentrated Solar Power Applications

    E-Print Network [OSTI]

    Shin, Donghyun

    2012-10-19T23:59:59.000Z

    The thermal efficiency of concentrated solar power (CSP) system depends on the maximum operating temperature of the system which is determined by the operating temperature of the TES device. Organic materials (such as synthetic oil, fatty acid...

  12. Molten Salt Nanomaterials for Thermal Energy Storage and Concentrated Solar Power Applications 

    E-Print Network [OSTI]

    Shin, Donghyun

    2012-10-19T23:59:59.000Z

    The thermal efficiency of concentrated solar power (CSP) system depends on the maximum operating temperature of the system which is determined by the operating temperature of the TES device. Organic materials (such as synthetic oil, fatty acid...

  13. Utility battery storage systems program report for FY 94

    SciTech Connect (OSTI)

    Butler, P.C.

    1995-03-01T23:59:59.000Z

    Sandia National Laboratories, New Mexico, conducts the Utility Battery Storage Systems Program, which is sponsored by the US Department of Energy`s Office of Energy Management. The goal of this program is to assist industry in developing cost-effective battery systems as a utility resource option by 2000. Sandia is responsible for the engineering analyses, contracted development, and testing of rechargeable batteries and systems for utility energy storage applications. This report details the technical achievements realized during fiscal year 1994.

  14. Specific systems studies of battery energy storage for electric utilities

    SciTech Connect (OSTI)

    Akhil, A.A.; Lachenmeyer, L. [Sandia National Labs., Albuquerque, NM (United States); Jabbour, S.J. [Decision Focus, Inc., Mountain View, CA (United States); Clark, H.K. [Power Technologies, Inc., Roseville, CA (United States)

    1993-08-01T23:59:59.000Z

    Sandia National Laboratories, New Mexico, conducts the Utility Battery Storage Systems Program, which is sponsored by the US Department of Energy`s Office of Energy Management. As a part of this program, four utility-specific systems studies were conducted to identify potential battery energy storage applications within each utility network and estimate the related benefits. This report contains the results of these systems studies.

  15. Energy storage systems program report for FY97

    SciTech Connect (OSTI)

    Butler, P.C.

    1998-08-01T23:59:59.000Z

    Sandia National Laboratories, New Mexico, conducts the Energy Storage Systems Program, which is sponsored by the US Department of Energy`s Office of Utility Technologies. The goal of this program is to collaborate with industry in developing cost-effective electric energy storage systems for many high-value stationary applications. Sandia National Laboratories is responsible for the engineering analyses, contracted development, and testing of energy storage components and systems. This report details the technical achievements realized during fiscal year 1997. 46 figs., 20 tabs.

  16. July 17 ESTAP Webinar: Resilient Solar-Storage Systems for Homes...

    Energy Savers [EERE]

    July 17 ESTAP Webinar: Resilient Solar-Storage Systems for Homes and Commercial Facilities July 17 ESTAP Webinar: Resilient Solar-Storage Systems for Homes and Commercial...

  17. Manufacturing R&D of Onboard Hydrogen Storage Systems for Transportati...

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

    Onboard Hydrogen Storage Systems for Transportation Applications Manufacturing R&D of Onboard Hydrogen Storage Systems for Transportation Applications Background paper prepared for...

  18. HybridPlan: A Capacity Planning Technique for Projecting Storage Requirements in Hybrid Storage Systems

    SciTech Connect (OSTI)

    Kim, Youngjae [ORNL] [ORNL; Gupta, Aayush [IBM Corporation, Almaden Research Center] [IBM Corporation, Almaden Research Center; Urgaonkar, Bhuvan [Pennsylvania State University] [Pennsylvania State University; Piotr, Berman [Pennsylvania State University, University Park, PA] [Pennsylvania State University, University Park, PA; Sivasubramaniam, Anand [Pennsylvania State University] [Pennsylvania State University

    2014-01-01T23:59:59.000Z

    Economic forces, driven by the desire to introduce flash into the high-end storage market without changing existing software-base, have resulted in the emergence of solid-state drives (SSDs), flash packaged in HDD form factors and capable of working with device drivers and I/O buses designed for HDDs. Unlike the use of DRAM for caching or buffering, however, certain idiosyncrasies of NAND Flash-based solid-state drives (SSDs) make their integration into hard disk drive (HDD)-based storage systems nontrivial. Flash memory suffers from limits on its reliability, is an order of magnitude more expensive than the magnetic hard disk drives (HDDs), and can sometimes be as slow as the HDD (due to excessive garbage collection (GC) induced by high intensity of random writes). Given the complementary properties of HDDs and SSDs in terms of cost, performance, and lifetime, the current consensus among several storage experts is to view SSDs not as a replacement for HDD, but rather as a complementary device within the high-performance storage hierarchy. Thus, we design and evaluate such a hybrid storage system with HybridPlan that is an improved capacity planning technique to administrators with the overall goal of operating within cost-budgets. HybridPlan is able to find the most cost-effective hybrid storage configuration with different types of SSDs and HDDs

  19. Energy storage benefits and market analysis handbook : a study for the DOE Energy Storage Systems Program.

    SciTech Connect (OSTI)

    Eyer, James M. (Distributed Utility Associates, Livermore, CA); Corey, Garth P.; Iannucci, Joseph J., Jr. (Distributed Utility Associates, Livermore, CA)

    2004-12-01T23:59:59.000Z

    This Guide describes a high level, technology-neutral framework for assessing potential benefits from and economic market potential for energy storage used for electric utility-related applications. In the United States use of electricity storage to support and optimize transmission and distribution (T&D) services has been limited due to high storage system cost and by limited experience with storage system design and operation. Recent improvement of energy storage and power electronics technologies, coupled with changes in the electricity marketplace, indicate an era of expanding opportunity for electricity storage as a cost-effective electric resource. Some recent developments (in no particular order) that drive the opportunity include: (1) states adoption of the renewables portfolio standard (RPS), which may increased use of renewable generation with intermittent output, (2) financial risk leading to limited investment in new transmission capacity, coupled with increasing congestion on some transmission lines, (3) regional peaking generation capacity constraints, and (4) increasing emphasis on locational marginal pricing (LMP).

  20. An investigation into the thermal properties of selected sensible and latent heat storage materials 

    E-Print Network [OSTI]

    Wood, Stanley Clayton

    1982-01-01T23:59:59.000Z

    in the latent heat of fusion. Considerable work has been done in analyzing latent heat storage systems. Telkes and Raymond [lj did early work with a sodium sulfate system using sealed drums. iVore recent experimental work was conducted with other salt...

  1. An investigation into the thermal properties of selected sensible and latent heat storage materials

    E-Print Network [OSTI]

    Wood, Stanley Clayton

    1982-01-01T23:59:59.000Z

    in the latent heat of fusion. Considerable work has been done in analyzing latent heat storage systems. Telkes and Raymond [lj did early work with a sodium sulfate system using sealed drums. iVore recent experimental work was conducted with other salt...

  2. Accepted for publication in Energy and Buildings. 2014. http://dx.doi.org/10.1016/j.enbuild.2014.03.056 Improvement of Borehole Thermal Energy Storage Design Based on

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    .03.056 1 Improvement of Borehole Thermal Energy Storage Design Based on Experimental and Modelling Results Thermal Energy Storage appears to be an attractive solution for solar thermal energy storage. The SOLARGEOTHERM research project aimed to evaluate the energetic potential of borehole thermal energy storage

  3. Benefits of battery-uItracapacitor hybrid energy storage systems

    E-Print Network [OSTI]

    Smith, Ian C., S.M. (Ian Charles). Massachusetts Institute of Technology

    2012-01-01T23:59:59.000Z

    This thesis explores the benefits of battery and battery-ultracapacitor hybrid energy storage systems (ESSs) in pulsed-load applications. It investigates and quantifies the benefits of the hybrid ESS over its battery-only ...

  4. The design and evaluation of an international plutonium storage system

    E-Print Network [OSTI]

    Bae, Eugene

    2001-01-01T23:59:59.000Z

    To address the proliferation risk of separated plutonium, a technical and institutional design of an international plutonium storage system (IPSS) is presented. The IPSS is evaluated from two perspectives: its ability to ...

  5. Preliminary Thermal Modeling of HI-Storm 100S-218 Version B Storage Modules at Hope Creek Cuclear Power Station ISFSI

    SciTech Connect (OSTI)

    Cuta, Judith M.; Adkins, Harold E.

    2013-08-30T23:59:59.000Z

    As part of the Used Fuel Disposition Campaign of the U. S. Department of Energy, Office of Nuclear Energy (DOE-NE) Fuel Cycle Research and Development, a consortium of national laboratories and industry is performing visual inspections and temperature measurements of selected storage modules at various locations around the United States. This report documents thermal analyses in in support of the inspections at the Hope Creek Nuclear Generating Station ISFSI. This site utilizes the HI-STORM100 vertical storage system developed by Holtec International. This is a vertical storage module design, and the thermal models are being developed using COBRA-SFS (Michener, et al., 1987), a code developed by PNNL for thermal-hydraulic analyses of multi assembly spent fuel storage and transportation systems. This report describes the COBRA-SFS model in detail, and presents pre-inspection predictions of component temperatures and temperature distributions. The final report will include evaluation of inspection results, and if required, additional post-test calculations, with appropriate discussion of results.

  6. Securing Distributed Storage: Challenges, Techniques, and Systems

    E-Print Network [OSTI]

    Kim, Dae-Shik

    and Engineering University of Minnesota Minneapolis, MN 55455 vkher@cs.umn.edu Yongdae Kim Computer Science and Engineering University of Minnesota Minneapolis, MN 55455 kyd@cs.umn.edu ABSTRACT The rapid increase permission and/or a fee. StorageSS'05 November 11, 2005, Fairfax, Virginia, USA. Copyright 2005 ACM 1

  7. Distributed Energy Resources On-Site Optimization for Commercial Buildings with Electric and Thermal Storage Technologies

    SciTech Connect (OSTI)

    Lacommare, Kristina S H; Stadler, Michael; Aki, Hirohisa; Firestone, Ryan; Lai, Judy; Marnay, Chris; Siddiqui, Afzal

    2008-05-15T23:59:59.000Z

    The addition of storage technologies such as flow batteries, conventional batteries, and heat storage can improve the economic as well as environmental attractiveness of on-site generation (e.g., PV, fuel cells, reciprocating engines or microturbines operating with or without CHP) and contribute to enhanced demand response. In order to examine the impact of storage technologies on demand response and carbon emissions, a microgrid's distributed energy resources (DER) adoption problem is formulated as a mixed-integer linear program that has the minimization of annual energy costs as its objective function. By implementing this approach in the General Algebraic Modeling System (GAMS), the problem is solved for a given test year at representative customer sites, such as schools and nursing homes, to obtain not only the level of technology investment, but also the optimal hourly operating schedules. This paper focuses on analysis of storage technologies in DER optimization on a building level, with example applications for commercial buildings. Preliminary analysis indicates that storage technologies respond effectively to time-varying electricity prices, i.e., by charging batteries during periods of low electricity prices and discharging them during peak hours. The results also indicate that storage technologies significantly alter the residual load profile, which can contribute to lower carbon emissions depending on the test site, its load profile, and its adopted DER technologies.

  8. Monitored Retrievable Storage System Requirements Document. Revision 1

    SciTech Connect (OSTI)

    Not Available

    1994-03-01T23:59:59.000Z

    This Monitored Retrievable Storage System Requirements Document (MRS-SRD) describes the functions to be performed and technical requirements for a Monitored Retrievable Storage (MRS) facility subelement and the On-Site Transfer and Storage (OSTS) subelement. The MRS facility subelement provides for temporary storage, at a Civilian Radioactive Waste Management System (CRWMS) operated site, of spent nuclear fuel (SNF) contained in an NRC-approved Multi-Purpose Canister (MPC) storage mode, or other NRC-approved storage modes. The OSTS subelement provides for transfer and storage, at Purchaser sites, of spent nuclear fuel (SNF) contained in MPCs. Both the MRS facility subelement and the OSTS subelement are in support of the CRWMS. The purpose of the MRS-SRD is to define the top-level requirements for the development of the MRS facility and the OSTS. These requirements include design, operation, and decommissioning requirements to the extent they impact on the physical development of the MRS facility and the OSTS. The document also presents an overall description of the MRS facility and the OSTS, their functions (derived by extending the functional analysis documented by the Physical System Requirements (PSR) Store Waste Document), their segments, and the requirements allocated to the segments. In addition, the top-level interface requirements of the MRS facility and the OSTS are included. As such, the MRS-SRD provides the technical baseline for the MRS Safety Analysis Report (SAR) design and the OSTS Safety Analysis Report design.

  9. NV energy electricity storage valuation : a study for the DOE Energy Storage Systems program.

    SciTech Connect (OSTI)

    Ellison, James F.; Bhatnagar, Dhruv; Samaan, Nader [Pacific Northwest National Laboratory, Richland, WA; Jin, Chunlian [Pacific Northwest National Laboratory, Richland, WA

    2013-06-01T23:59:59.000Z

    This study examines how grid-level electricity storage may benefit the operations of NV Energy, and assesses whether those benefits are likely to justify the cost of the storage system. To determine the impact of grid-level storage, an hourly production cost model of the Nevada Balancing Authority (%22BA%22) as projected for 2020 was created. Storage was found to add value primarily through the provision of regulating reserve. Certain storage resources were found likely to be cost-effective even without considering their capacity value, as long as their effectiveness in providing regulating reserve was taken into account. Giving fast resources credit for their ability to provide regulating reserve is reasonable, given the adoption of FERC Order 755 (%22Pay-for-performance%22). Using a traditional five-minute test to determine how much a resource can contribute to regulating reserve does not adequately value fast-ramping resources, as the regulating reserve these resources can provide is constrained by their installed capacity. While an approximation was made to consider the additional value provided by a fast-ramping resource, a more precise valuation requires an alternate regulating reserve methodology. Developing and modeling a new regulating reserve methodology for NV Energy was beyond the scope of this study, as was assessing the incremental value of distributed storage.

  10. Comparison of cask and drywell storage concepts for a monitored retrievable storage/interim storage system

    SciTech Connect (OSTI)

    Rasmussen, D.E.

    1982-12-01T23:59:59.000Z

    The Department of Energy, through its Richland Operations Office is evaluating the feasibility, timing, and cost of providing a federal capability for storing the spent fuel, high-level wastes, and transuranic wastes that DOE may be obligated by law to manage until permanent waste disposal facilities are available. Three concepts utilizing a monitored retrievable storage/interim storage (MRS/IS) facility have been developed and analyzed. The first concept, co-location with a reprocessing plant, has been developed by staff of Allied General Nuclear Services. the second concept, a stand-alone facility, has been developed by staff of the General Atomic Company. The third concept, co-location with a deep geologic repository, has been developed by the Pacific Northwest Laboratory with the assistance of the Westinghouse Hanford Company and Kaiser Engineers. The objectives of this study are: to develop preconceptual designs for MRS/IS facilities: to examine various issues such as transportation of wastes, licensing of the facilities, and environmental concerns associated with operation of such facilities; and to estimate the life-cycle costs of the facilities when operated in response to a set of scenarios that define the quantities and types of waste requiring storage in specific time periods, generally spanning the years 1989 to 2037. Three scenarios are examined to develop estimates of life-cycle costs for the MRS/IS facilities. In the first scenario, the reprocessing plant is placed in service in 1989 and HLW canisters are stored until a repository is opened in the year 1998. Additional reprocessing plants and repositories are placed in service at intervals as needed to meet the demand. In the second scenario, the reprocessing plants are delayed in starting operations by 10 years, but the repositories open on schedule. In the third scenario, the repositories are delayed 10 years, but the reprocessing plants open on schedule.

  11. Proceedings of the DOE chemical energy storage and hydrogen energy systems contracts review

    SciTech Connect (OSTI)

    Not Available

    1980-02-01T23:59:59.000Z

    Sessions were held on electrolysis-based hydrogen storage systems, hydrogen production, hydrogen storage systems, hydrogen storage materials, end-use applications and system studies, chemical heat pump/chemical energy storage systems, systems studies and assessment, thermochemical hydrogen production cycles, advanced production concepts, and containment materials. (LHK)

  12. Variable emissivity laser thermal control system

    DOE Patents [OSTI]

    Milner, Joseph R. (Livermore, CA)

    1994-01-01T23:59:59.000Z

    A laser thermal control system for a metal vapor laser maintains the wall mperature of the laser at a desired level by changing the effective emissivity of the water cooling jacket. This capability increases the overall efficiency of the laser.

  13. ACCEPTABILITY ENVELOPE FOR METAL HYDRIDE-BASED HYDROGEN STORAGE SYSTEMS

    SciTech Connect (OSTI)

    Hardy, B.; Corgnale, C.; Tamburello, D.; Garrison, S.; Anton, D.

    2011-07-18T23:59:59.000Z

    The design and evaluation of media based hydrogen storage systems requires the use of detailed numerical models and experimental studies, with significant amount of time and monetary investment. Thus a scoping tool, referred to as the Acceptability Envelope, was developed to screen preliminary candidate media and storage vessel designs, identifying the range of chemical, physical and geometrical parameters for the coupled media and storage vessel system that allow it to meet performance targets. The model which underpins the analysis allows simplifying the storage system, thus resulting in one input-one output scheme, by grouping of selected quantities. Two cases have been analyzed and results are presented here. In the first application the DOE technical targets (Year 2010, Year 2015 and Ultimate) are used to determine the range of parameters required for the metal hydride media and storage vessel. In the second case the most promising metal hydrides available are compared, highlighting the potential of storage systems, utilizing them, to achieve 40% of the 2010 DOE technical target. Results show that systems based on Li-Mg media have the best potential to attain these performance targets.

  14. A New Aerosol Flow System for Photochemical and Thermal Studies...

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

    Aerosol Flow System for Photochemical and Thermal Studies of Tropospheric Aerosols. A New Aerosol Flow System for Photochemical and Thermal Studies of Tropospheric Aerosols....

  15. Solar Energy Grid Integration Systems -- Energy Storage (SEGIS-ES).

    SciTech Connect (OSTI)

    Hanley, Charles J.; Ton, Dan T. (U.S. Department of Energy, Washington, D.C.); Boyes, John D.; Peek, Georgianne Huff

    2008-07-01T23:59:59.000Z

    This paper describes the concept for augmenting the SEGIS Program (an industry-led effort to greatly enhance the utility of distributed PV systems) with energy storage in residential and small commercial applications (SEGIS-ES). The goal of SEGIS-ES is to develop electrical energy storage components and systems specifically designed and optimized for grid-tied PV applications. This report describes the scope of the proposed SEGIS-ES Program and why it will be necessary to integrate energy storage with PV systems as PV-generated energy becomes more prevalent on the nation's utility grid. It also discusses the applications for which energy storage is most suited and for which it will provide the greatest economic and operational benefits to customers and utilities. Included is a detailed summary of the various storage technologies available, comparisons of their relative costs and development status, and a summary of key R&D needs for PV-storage systems. The report concludes with highlights of areas where further PV-specific R&D is needed and offers recommendations about how to proceed with their development.

  16. Standard review plan for dry cask storage systems. Final report

    SciTech Connect (OSTI)

    NONE

    1997-01-01T23:59:59.000Z

    The Standard Review Plan (SRP) For Dry Cask Storage Systems provides guidance to the Nuclear Regulatory Commission staff in the Spent Fuel Project Office for performing safety reviews of dry cask storage systems. The SRP is intended to ensure the quality and uniformity of the staff reviews, present a basis for the review scope, and clarification of the regulatory requirements. Part 72, Subpart B generally specifies the information needed in a license application for the independent storage of spent nuclear fuel and high level radioactive waste. Regulatory Guide 3.61 {open_quotes}Standard Format and Content for a Topical Safety Analysis Report for a Spent Fuel Dry Storage Cask{close_quotes} contains an outline of the specific information required by the staff. The SRP is divided into 14 sections which reflect the standard application format. Regulatory requirements, staff positions, industry codes and standards, acceptance criteria, and other information are discussed.

  17. Shielding analysis of the NAC-MPC storage system

    SciTech Connect (OSTI)

    Napolitano, D.G.; Romano, N.J. [NAC International, Norcross, GA (United States); Hertel, N.E. [Georgia Institute of Technology, Atlanta, GA (United States)] [and others

    1997-12-01T23:59:59.000Z

    This paper presents the shielding analyses of the NAC-MPC dry cask storage system. The NAC-MPC dry cask storage system consists of a transportable storage canister, a transfer cask, and a vertical concrete storage cask. The NAC-MPC is designed to accommodate 36 {open_quotes}Yankee Class{close_quotes} fuel assemblies with a maximum burnup of 36,000 MWd/tonne U burnup and 8 yr cooling time. The shielding analysis is performed with the SCALE 4.3 code package which includes SAS2H for source term generation and SAS4A, a modification of SAS4, for shielding evaluations. SAS4 utilizes a one-dimensional XSDRNPM adjoint calculation of the cask to generate biasing parameters for a three-dimensional MORSE-SGC Monte Carlo model of the cask geometry.

  18. Superconducting magnetic energy storage for asynchronous electrical systems

    DOE Patents [OSTI]

    Boenig, Heinrich J. (Los Alamos, NM)

    1986-01-01T23:59:59.000Z

    A superconducting magnetic energy storage coil connected in parallel between converters of two or more ac power systems provides load leveling and stability improvement to any or all of the ac systems. Control is provided to direct the charging and independently the discharging of the superconducting coil to at least a selected one of the ac power systems.

  19. Sizing Storage and Wind Generation Capacities in Remote Power Systems

    E-Print Network [OSTI]

    Victoria, University of

    Sizing Storage and Wind Generation Capacities in Remote Power Systems by Andy Gassner B Capacities in Remote Power Systems by Andy Gassner B.Sc., University of Wisconsin ­ Madison, 2003 Supervisory and small power systems. However, the variability due to the stochastic nature of the wind resource

  20. Cooperative heat transfer and ground coupled storage system

    DOE Patents [OSTI]

    Metz, Philip D. (Rocky Point, NY)

    1982-01-01T23:59:59.000Z

    A cooperative heat transfer and ground coupled storage system wherein collected solar heat energy is ground stored and permitted to radiate into the adjacent ground for storage therein over an extended period of time when such heat energy is seasonally maximally available. Thereafter, when said heat energy is seasonally minimally available and has propagated through the adjacent ground a substantial distance, the stored heat energy may be retrieved by a circumferentially arranged heat transfer means having a high rate of heat transfer.

  1. Thermal Energy Storage Using Phase Change Materials in Corrugated Copper Panels 

    E-Print Network [OSTI]

    Aigbotsua, Clifford Okhumeode

    2012-07-16T23:59:59.000Z

    variations (Lane [2]; Abhat [3]). Latent heat storage has been researched and pioneered by Dr. Telkes in the 1940s (Lane [2]) and others. It did not receive much attention until the energy crisis of the late 1970s and 1980s when it was researched for use... in different applications especially for solar heating. The first application of PCM described in literature was their use for the heating and cooling of buildings by Telkes [4]. The storage capacity of a LHS system incorporating a PCM medium is given...

  2. Thermal Energy Storage Using Phase Change Materials in Corrugated Copper Panels

    E-Print Network [OSTI]

    Aigbotsua, Clifford Okhumeode

    2012-07-16T23:59:59.000Z

    variations (Lane [2]; Abhat [3]). Latent heat storage has been researched and pioneered by Dr. Telkes in the 1940s (Lane [2]) and others. It did not receive much attention until the energy crisis of the late 1970s and 1980s when it was researched for use... in different applications especially for solar heating. The first application of PCM described in literature was their use for the heating and cooling of buildings by Telkes [4]. The storage capacity of a LHS system incorporating a PCM medium is given...

  3. Design Tool for Cryogenic Thermal Insulation Systems

    SciTech Connect (OSTI)

    Demko, Jonathan A [ORNL] [ORNL; Fesmire, J. E. [NASA Kennedy Space Center, Kennedy Space Center, Florida] [NASA Kennedy Space Center, Kennedy Space Center, Florida; Augustynowicz, S. D. [Sierra Lobo Inc., Kennedy Space Center, Florida] [Sierra Lobo Inc., Kennedy Space Center, Florida

    2008-01-01T23:59:59.000Z

    Thermal isolation of low-temperature systems from ambient environments is a constant issue faced by practitioners of cryogenics. For energy-efficient systems and processes to be realized, thermal insulation must be considered as an integrated system, not merely an add-on element. A design tool to determine the performance of insulation systems for comparative trade-off studies of different available material options was developed. The approach is to apply thermal analysis to standard shapes (plane walls, cylinders, spheres) that are relatively simple to characterize with a one-dimensional analytical or numerical model. The user describes the system hot and cold boundary geometry and the operating environment. Basic outputs such as heat load and temperature profiles are determined. The user can select from a built-in insulation material database or input user defined materials. Existing information has been combined with the new experimental thermal conductivity data produced by the Cryogenics Test Laboratory for cryogenic and vacuum environments, including high vacuum, soft vacuum, and no vacuum. Materials in the design tool include multilayer insulation, aerogel blankets, aerogel bulk-fill, foams, powders, composites, and other insulation system constructions. A comparison of the design tool to a specific composite thermal insulation system is given.

  4. Energy dispatch schedule optimization and cost benefit analysis for grid-connected, photovoltaic-battery storage systems

    E-Print Network [OSTI]

    Nottrott, A.; Kleissl, J.; Washom, B.

    2013-01-01T23:59:59.000Z

    photovoltaic-battery storage system (PV+ system). The LPrate). Eq. 1 minimizes net PV+ battery system power output (photovoltaic-battery storage system (PV+ system). The

  5. Design optimization of thermal paths in spacecraft systems

    E-Print Network [OSTI]

    Stout, Kevin Dale

    2013-01-01T23:59:59.000Z

    This thesis introduces a thermal design approach to increase thermal control system performance and decrease reliance on system resources, e.g., mass. Thermal design optimization has lagged other subsystems because the ...

  6. Autothermal hydrogen storage and delivery systems

    DOE Patents [OSTI]

    Pez, Guido Peter (Allentown, PA); Cooper, Alan Charles (Macungie, PA); Scott, Aaron Raymond (Allentown, PA)

    2011-08-23T23:59:59.000Z

    Processes are provided for the storage and release of hydrogen by means of dehydrogenation of hydrogen carrier compositions where at least part of the heat of dehydrogenation is provided by a hydrogen-reversible selective oxidation of the carrier. Autothermal generation of hydrogen is achieved wherein sufficient heat is provided to sustain the at least partial endothermic dehydrogenation of the carrier at reaction temperature. The at least partially dehydrogenated and at least partially selectively oxidized liquid carrier is regenerated in a catalytic hydrogenation process where apart from an incidental employment of process heat, gaseous hydrogen is the primary source of reversibly contained hydrogen and the necessary reaction energy.

  7. NERSC Nick Balthaser NERSC Storage Systems Group

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Saleshttp://www.fnal.gov/directorate/nalcal/nalcal02_07_05_files/nalcal.gif Directorate - Events -ExascalemadeArchival Storage at

  8. Targeting adequate thermal stability and fire safety in selecting ionic liquid-based electrolytes for energy storage

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    for energy storage L. Chancelier,a,b A.O. Diallo,c,d C.C. Santini,*a G. Marlair,*c T. Gutel,b S. Mailley,b C Abstract The energy storage market relating to lithium based systems regularly grows in size and expands for the promotion of a new generation of energy storage systems. These systems must be capable of addressing

  9. Modelling Concentrating Solar Power with Thermal Energy Storage for Integration Studies: Preprint

    SciTech Connect (OSTI)

    Hummon, M.; Denholm, P.; Jorgenson, J.; Mehos, M.

    2013-10-01T23:59:59.000Z

    Concentrating solar power with thermal energy storage (CSP-TES) can provide multiple benefits to the grid, including low marginal cost energy and the ability to levelize load, provide operating reserves, and provide firm capacity. It is challenging to properly value the integration of CSP because of the complicated nature of this technology. Unlike completely dispatchable fossil sources, CSP is a limited energy resource, depending on the hourly and daily supply of solar energy. To optimize the use of this limited energy, CSP-TES must be implemented in a production cost model with multiple decision variables for the operation of the CSP-TES plant. We develop and implement a CSP-TES plant in a production cost model that accurately characterizes the three main components of the plant: solar field, storage tank, and power block. We show the effect of various modelling simplifications on the value of CSP, including: scheduled versus optimized dispatch from the storage tank and energy-only operation versus co-optimization with ancillary services.

  10. Modelling Concentrating Solar Power with Thermal Energy Storage for Integration Studies (Presentation)

    SciTech Connect (OSTI)

    Hummon, M.; Jorgenson, J.; Denholm, P.; Mehos, M.

    2013-10-01T23:59:59.000Z

    Concentrating solar power with thermal energy storage (CSP-TES) can provide multiple benefits to the grid, including low marginal cost energy and the ability to levelize load, provide operating reserves, and provide firm capacity. It is challenging to properly value the integration of CSP because of the complicated nature of this technology. Unlike completely dispatchable fossil sources, CSP is a limited energy resource, depending on the hourly and daily supply of solar energy. To optimize the use of this limited energy, CSP-TES must be implemented in a production cost model with multiple decision variables for the operation of the CSP-TES plant. We develop and implement a CSP-TES plant in a production cost model that accurately characterizes the three main components of the plant: solar field, storage tank, and power block. We show the effect of various modelling simplifications on the value of CSP, including: scheduled versus optimized dispatch from the storage tank and energy-only operation versus co-optimization with ancillary services.

  11. Utility battery storage systems. Program report for FY95

    SciTech Connect (OSTI)

    Butler, P.C.

    1996-03-01T23:59:59.000Z

    Sandia National Laboratories, New Mexico, conducts the Utility Battery Storage Systems Program, which is sponsored by the U.S. Department of Energy`s Office of Utility Technologies. The goal of this program is to assist industry in developing cost-effective battery systems as a utility resource option by 2000. Sandia is responsible for the engineering analyses, contracted development, and testing of rechargeable batteries and systems for utility energy storage applications. This report details the technical achievements realized during fiscal year 1995.

  12. Air ejector augmented compressed air energy storage system

    DOE Patents [OSTI]

    Ahrens, Frederick W. (Naperville, IL); Kartsounes, George T. (Naperville, IL)

    1980-01-01T23:59:59.000Z

    Energy is stored in slack demand periods by charging a plurality of underground reservoirs with air to the same peak storage pressure, during peak demand periods throttling the air from one storage reservoir into a gas turbine system at a constant inlet pressure until the air pressure in the reservoir falls to said constant inlet pressure, thereupon permitting air in a second reservoir to flow into said gas turbine system while drawing air from the first reservoir through a variable geometry air ejector and adjusting said variable geometry air ejector, said air flow being essentially at the constant inlet pressure of the gas turbine system.

  13. Surface-enhanced raman optical data storage system

    DOE Patents [OSTI]

    Vo-Dinh, Tuan (Knoxville, TN)

    1991-01-01T23:59:59.000Z

    A method and apparatus for a Surface-Enhanced Raman Optical Data Storage (SERODS) System is disclosed. A medium which exhibits the Surface Enhanced Raman Scattering (SERS) phenomenon has data written onto its surface of microenvironment by means of a write-on procedure which disturbs the surface or microenvironment of the medium and results in the medium having a changed SERS emission when excited. The write-on procedure is controlled by a signal that corresponds to the data to be stored so that the disturbed regions on the storage device (e.g., disk) represent the data. After the data is written onto the storage device it is read by exciting the surface of the storage device with an appropriate radiation source and detecting changes in the SERS emission to produce a detection signal. The data is then reproduced from the detection signal.

  14. Surface-Enhanced Raman Optical Data Storage system

    DOE Patents [OSTI]

    Vo-Dinh, T.

    1991-03-12T23:59:59.000Z

    A method and apparatus for a Surface-Enhanced Raman Optical Data Storage (SERODS) System are disclosed. A medium which exhibits the Surface Enhanced Raman Scattering (SERS) phenomenon has data written onto its surface of microenvironment by means of a write-on procedure which disturbs the surface or microenvironment of the medium and results in the medium having a changed SERS emission when excited. The write-on procedure is controlled by a signal that corresponds to the data to be stored so that the disturbed regions on the storage device (e.g., disk) represent the data. After the data is written onto the storage device it is read by exciting the surface of the storage device with an appropriate radiation source and detecting changes in the SERS emission to produce a detection signal. The data is then reproduced from the detection signal. 5 figures.

  15. Stasis: Flexible Transactional Storage

    E-Print Network [OSTI]

    Sears, Russell C.

    2009-01-01T23:59:59.000Z

    storage . . . . . . . . . . . . . . . . . . . . . .example system based on log-structured storage 10.1 SystemA storage bottleneck. . . . . . . . . . . . . . . .

  16. Thermal energy storage : a key technology for the food cold chain Denis Leducq(a), P. Schalbart(a), F. Trinquet(a), G. Alvarez(a), B. Verlinden(b),P.

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ID: 123 Thermal energy storage : a key technology for the food cold chain Denis Leducq(a), P and intermittent renewable energy sources, energy storage, and more specifically thermal energy storage is one of thermal energy storage devices, is also an important factor of food quality and security enhancement

  17. Using Encapsulated Phase Change Material in Thermal Energy Storage for Baseload Concentrating Solar Power (EPCM-TES)

    SciTech Connect (OSTI)

    Mathur, Anoop [Terrafore Technologies LLC, Minneapolis, MN (United States)

    2013-12-15T23:59:59.000Z

    Terrafore successfully demonstrated and optimized the manufacturing of capsules containing phase-changing inorganic salts. The phase change was used to store thermal energy collected from a concentrating solar-power plant as latent heat. This latent heat, in addition to sensible heat increased the energy density (energy stored per unit weight of salt) by over 50%, thus requiring 40% less salt and over 60% less capsule container. Therefore, the cost to store high-temperature thermal energy collected in a concentrating solar power plant will be reduced by almost 40% or more, as compared to conventional two-tank, sensible-only storage systems. The cost for thermal energy storage (TES) system is expected to achieve the Sun Shot goal of $15 per kWh(t). Costs associated with poor heat-transfer in phase change materials (PCM) were also eliminated. Although thermal energy storage that relies on the latent heat of fusion of PCM improves energy density by as much as 50%, upon energy discharge the salt freezes and builds on the heat transfer surfaces. Since these salts have low thermal conductivity, large heat-transfer areas, or larger conventional heat-exchangers are needed, which increases costs. By encapsulating PCM in small capsules we have increased the heat transfer area per unit volume of salt and brought the heat transfer fluid in direct contact with the capsules. These two improvements have increased the heat transfer coefficient and boosted heat transfer. The program was successful in overcoming the phenomenon of melt expansion in the capsules, which requires the creation of open volume in the capsules or shell to allow for expansion of the molten salt on melting and is heated above its melting point to 550°C. Under contract with the Department of Energy, Terrafore Inc. and Southwest Research Institute, developed innovative method(s) to economically create the open volume or void in the capsule. One method consists of using a sacrificial polymer coating as the middle layer between the salt prill and the shell material. The selected polymer decomposes at temperatures below the melting point of the salt and forms gases which escape through the pores in the capsule shell thus leaving a void in the capsule. We have demonstrated the process with a commonly used inorganic nitrate salt in a low-cost shell material that can withstand over 10,000 high-temperature thermal cycles, or a thirty-year or greater life in a solar plant. The shell used to encapsulate the salt was demonstrated to be compatible with molten salt heat transfer fluid typically used in CSP plants to temperatures up to 600 °C. The above findings have led to the concept of a cascaded arrangement. Salts with different melting points can be encapsulated using the same recipe and contained in a packed bed by cascading the salt melting at higher melting point at the top over the salt melting at lower melting point towards the bottom of the tank. This cascaded energy storage is required to effectively transfer the sensible heat collected in heat transfer fluids between the operating temperatures and utilize the latent heat of fusion in the salts inside the capsule. Mathematical models indicate that over 90% of the salts will undergo phase change by using three salts in equal proportion. The salts are selected such that the salt at the top of the tank melts at about 15°C below the high operating-temperature, and the salt at the bottom of the tank melts 15°C above the low operating-temperature. The salt in the middle of tank melts in-between the operating temperature of the heat transfer fluid. A cascaded arrangement leads to the capture of 90% of the latent-heat of fusion of salts and their sensible heats. Thus the energy density is increased by over 50% from a sensible-only, two-tank thermal energy storage. Furthermore, the Terrafore cascaded storage method requires only one tank as opposed to the two-tanks used in sensible heat storage. Since heat is transferred from the heat transfer fluid by direct contact with capsules, external heat-exchangers are not required

  18. A Review of Energy Storage Technologies for Marine Current Energy Systems A Review of Energy Storage Technologies for Marine Current Energy Systems

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    A Review of Energy Storage Technologies for Marine Current Energy Systems 1 A Review of Energy Storage Technologies for Marine Current Energy Systems Z. Zhoua,b,c , M.E.H. Benbouzida,* , J reliable, energy storage systems can play a crucial role. In this paper, an overview and the state of art

  19. Energy dispatch schedule optimization and cost benefit analysis for grid-connected, photovoltaic-battery storage systems

    E-Print Network [OSTI]

    Nottrott, A.; Kleissl, J.; Washom, B.

    2013-01-01T23:59:59.000Z

    State Assembly Bill 2514 – Energy storage systems,” Energy Storage for the Electricity5. D. Rastler, Electric Energy Storage Technology Options: A

  20. First-Principles Study of the Li-Na-Ca-N-H System: Compound Structures and Hydrogen-Storage Properties

    E-Print Network [OSTI]

    Teeratchanan, Pattanasak

    2012-01-01T23:59:59.000Z

    system for reversible hydrogen storage,” J. Alloys Comp, volCompound structures and hydrogen-storage properties,” J.compounds: Application to hydrogen storage materials,” Phys.