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Note: This page contains sample records for the topic "rigid foam insulation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Material Characterization Of Rigid Foam Insulation For Aerospace Vehicles.  

E-Print Network [OSTI]

?? There is a continuing need for improved rigid foam insulation, particularly for cryogenic storage aboard aerospace vehicles. The present work is a material characterization… (more)

Barrios, Matt

2011-01-01T23:59:59.000Z

2

Thermal conductivity of rigid foam insulations for aerospace vehicles  

Science Journals Connector (OSTI)

The present work describes measurements of the effective thermal conductivity of NCFI 24-124 foam, a spray-on foam insulation used formerly on the Space Shuttle external fuel tank. A novel apparatus to measure the effective thermal conductivity of rigid foam at temperatures ranging from 20 K to 300 K was developed and used to study three samples of NCFI 24-124 foam insulation. In preparation for measurement, the foam samples were either treated with a uniquely designed moisture absorption apparatus or different residual gases to study their impact on the effective thermal conductivity of the foam. The resulting data are compared to other measurements and mathematical models reported in the literature.

M. Barrios; S.W. Van Sciver

2013-01-01T23:59:59.000Z

3

Fire Behaviour of Rigid Foam Insulation Boards  

Science Journals Connector (OSTI)

Low density cellular polymers have established a significant share of the market for insulating materials in the building industry due to their unique combination of low density and low thermal conductivity. Manu...

P. J. Briggs

1986-01-01T23:59:59.000Z

4

Rigid foam polyurethane (PU) derived from castor oil (Ricinus communis) for thermal insulation in roof systems  

Science Journals Connector (OSTI)

This paper discusses the response of the thermal insulation lining of rigid foam polyurethane (PU) derived from castor oil (Ricinus communis) in heat conditions, based on dynamic climate approach. Liners have been widely used, because the coverage of buildings is responsible for the greatest absorption of heat by radiation, but the use of PU foam derived from this vegetal oil is unprecedented and has the advantage of being biodegradable and renewable. The hot wire parallel method provided the thermal conductivity value of the foam. The thermogravimetric analysis enabled the study of the foam decomposition and its lifetime by kinetic evaluation that involves the decomposition process. The PU foam thermal behavior analysis was performed by collecting experimental data of internal surface temperature measured by thermocouples and assessed by representative episode of the climatic fact. The results lead to the conclusion that the PU foam derived from castor oil can be applied to thermal insulation of roof systems and is an environmentally friendly material.

Grace Tibério Cardoso; Salvador Claro Neto; Francisco Vecchia

2012-01-01T23:59:59.000Z

5

Synthesis and characterization of melamine–formaldehyde rigid foams for vacuum thermal insulation  

Science Journals Connector (OSTI)

Abstract A novel core material for vacuum thermal insulation, the melamine–formaldehyde (MF) rigid foam was processed from an emulsion of the melamine–formaldehyde resin at temperatures between 130 °C and 150 °C, using pentane as the blowing agent. The achieved porosity was between 92% and 98%. Open pore structure with desired mechanical properties was achieved by variations of the initial chemical composition of liquid reactants and controlled foaming and hardening, employing classical heating. The average pore size was determined directly by SEM and indirectly by measuring the thermal conductivity in a wide pressure range from 10?3 mbar to the atmosphere. Optimization of the synthesis resulted in the base thermal conductivity equal to only 0.006 W m?1 K?1 and an extremely low outgassing rate. The long-term pressure-rise measurements indicate that these MF rigid foams could be the first organic candidates applied as the core material in Vacuum Insulating Panels (VIPs) whose performance may be comparable to selected inorganic core materials. Their further advantages compared to conventional organic foams are their stability, as they can withstand a temperature in excess of 200 °C, and good fire resistance.

V. Nemani?; B. Zajec; M. Žumer; N. Figar; M. Kavšek; I. Miheli?

2014-01-01T23:59:59.000Z

6

A study on rigid foam/evacuated powder composite panels for thermal insulation  

Science Journals Connector (OSTI)

The present study investigates the feasibility of a composite panel: a series of individually evacuated panels incapsulated in a rigid closed cell foam matrix. The panels were encapsulated in a thin glass shee...

L. R. Glicksman; N. Solomou; J. K. Hong

1997-03-01T23:59:59.000Z

7

Building America Whole-House Solutions for New Homes: Exterior Rigid Foam Insulation at the Edge of a Slab Foundation, Fresno, California  

Broader source: Energy.gov [DOE]

Exterior rigid foam insulation at the edge of the slab foundation was a unique feature for this low-load, unoccupied test house in a hot-dry climate and maybe more appropriate for climates with higher heating loads.

8

Polyurethane rigid foam from soybean oil-based polyol.  

E-Print Network [OSTI]

??Polyurethane rigid foams are widely used as thermal insulation materials. The general route to make polyurethane is through the reaction between polyol and isocyanate. Blowing… (more)

Tan, Suqin

2010-01-01T23:59:59.000Z

9

Measure Guideline: Installing Rigid Foam Insulation on the Interior of Existing Brick Walls  

SciTech Connect (OSTI)

This measure guideline provides information on an effective method to insulate the interior of existing brick masonry walls with extruded polystyrene (XPS) insulation board. The guide outlines step-by-step design and installation procedures while explaining the benefits and tradeoffs where applicable. The authors intend that this document be useful to a varied audience that includes builders, remodelers, contractors and homeowners.

Natarajan, H.; Klocke, S.; Puttagunta, S.

2012-06-01T23:59:59.000Z

10

Improving the Performance of Heat Insulation Polyurethane Foams by Silica Nanoparticles  

Science Journals Connector (OSTI)

Heat insulation polyurethane foam materials were doped by silica nano particles, ... , thermal and mechanical properties of polyurethane rigid foam were investigated. Thermal and mechanical properties were...

M. M. Alavi Nikje; A. Bagheri Garmarudi; M. Haghshenas…

2009-01-01T23:59:59.000Z

11

Analysis of Fire Performance, Smoke Development and Combustion Gases from Flame Retarded Rigid Polyurethane Foams.  

E-Print Network [OSTI]

??Rigid polyurethane foam is a polymeric material which is widely used for thermal insulation in building construction and other applications. Given recent emphasis on energy… (more)

Adeosun, David

2014-01-01T23:59:59.000Z

12

Exterior Rigid Insulation Best Practices- Building America Top Innovation  

Broader source: Energy.gov [DOE]

Field and lab studies by Building America teams BSC, PHI, and Northern STAR characterize the thermal, air, and vapor resistance properties of rigid foam insulation and describe best practices for their use on walls, roofs, and foundations.

13

Development of microwave foaming method for phenolic insulation foams  

Science Journals Connector (OSTI)

Many types of foams are used for thermal insulation in building, frozen food industries and LNG containment systems. Low thermal conductivity, low density and low flammability are required for thermal insulation. Among many foams, phenolic foams are preferred for thermal insulation due to its lower flammability and lower gas generation than any other polymer insulation foams. However, it takes long time to manufacture large size phenolic foams and the environmental regulation limits the use of blowing agents. Urethane foams and polystyrene foams are widely used in spite of their high flammability and toxic gas generation because conventional phenolic foams usually have higher thermal conductivity than expected. In this work, a foaming method for the resole-type phenolic foams was developed using microwave and air instead of blowing agents, and its thermal and mechanical properties were measured. From the measured results, it was found that the phenolic foams developed had low thermal conductivity and low density suitable for insulation foams.

Bu Gi Kim; Dai Gil Lee

2008-01-01T23:59:59.000Z

14

Mechanical Characterization of Rigid Polyurethane Foams.  

SciTech Connect (OSTI)

Foam materials are used to protect sensitive components from impact loading. In order to predict and simulate the foam performance under various loading conditions, a validated foam model is needed and the mechanical properties of foams need to be characterized. Uniaxial compression and tension tests were conducted for different densities of foams under various temperatures and loading rates. Crush stress, tensile strength, and elastic modulus were obtained. A newly developed confined compression experiment provided data for investigating the foam flow direction. A biaxial tension experiment was also developed to explore the damage surface of a rigid polyurethane foam.

Lu, Wei-Yang

2014-12-01T23:59:59.000Z

15

Experimental Study of a New PVC Foam Insulation System for Liquid-Hydrogen-Liquid-Oxygen Space Vehicles  

Science Journals Connector (OSTI)

This paper discusses the development of a rigid external foam insulation for liquid-hydrogen-liquid-oxygen space vehicles...1...], dealing with the use of Klegecell G 300,* a PVC closed-cell foam. This foam does ...

F. J. Muller

1971-01-01T23:59:59.000Z

16

Exterior Rigid Foam Insulation at the Edge of a Slab Foundation, Fresno, California (Fact Sheet), Building America Case Study: Efficient Solutions for New and Existing Homes, Building Technologies Office (BTO)  

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

Exterior Rigid Foam Insulation at Exterior Rigid Foam Insulation at the Edge of a Slab Foundation Fresno, California PROJECT INFORMATION Construction: New Home Type: Single-family, affordable Builder: Wathen-Castanos Hybrid Homes, Inc., www.wchomes.com Size: 1,789 ft 2 Price Range: Starting at $205,000 Date completed: 2011 Climate Zone: Hot-dry PERFORMANCE DATA Using BEopt version 1.3 modeling on the house plan and specifications noted for this Fresno, California, unoccupied test house, the research team deter- mined that the house will achieve energy savings of 35.5% with respect to the Building America House Simulation Protocols*. * Hendron, R. and Engebrecht, C. NREL/TP-550-49426. "Building America House Simulation Protocols." Golden, CO: National Renewable Energy Laboratory, 2010.

17

CFC alternatives for thermal insulation foams  

Science Journals Connector (OSTI)

Low density polymeric foam material expanded with chlorofluorocarbon (CFC) blowing agents have found widespread use as highly efficient thermal insulation materials in the construction, refrigeration appliance and transportation industries. The advent of regulations which are reducing the production and consumption of the fully halogenated \\{CFCs\\} for environmental reasons has prompted the development of environmentally acceptable substitutes for the CFC blowing agents. This paper summarizes the physical properties and performance of the leading alternatives for CFC-11, which is used to expand rigid polyurethane and polyisocyanurate foams, and the leading alternatives for CFC-12 which is used to expand extruded polystyrene board foam. Although the alternatives, HCFC-123 and HCFC-141b for CFC-11 and HCFC-142b and HCFC-124 for CFC-12, are not perfect matches from the performance viewpoint, they represent the optimum choice given the constraints on environmental acceptability, toxicity, flammability and performance.

Ian R Shankland

1990-01-01T23:59:59.000Z

18

Aging Characteristics of Polyurethane Foam Insulation  

Science Journals Connector (OSTI)

Closed-cell polyurethane foam insulation displays a time-dependent thermal conductivity characteristic commonly known as aging. Freshly made foam has a relatively low thermal conductivity, which ... in order to e...

J. Navickas; R. A. Madsen

1977-01-01T23:59:59.000Z

19

Panelized wall system with foam core insulation  

DOE Patents [OSTI]

A wall system includes a plurality of wall members, the wall members having a first metal panel, a second metal panel, and an insulating core between the first panel and the second panel. At least one of the first panel and the second panel include ridge portions. The insulating core can be a foam, such as a polyurethane foam. The foam can include at least one opacifier to improve the k-factor of the foam.

Kosny, Jan (Oak Ridge, TN); Gaskin, Sally (Houston, TX)

2009-10-20T23:59:59.000Z

20

Rigid polyurethane foams in refrigeration. (Latest citations from the Rubber and Plastics Research Association database). Published Search  

SciTech Connect (OSTI)

The bibliography contains citations concerning the use of rigid polyurethane as thermal insulation in refrigerators. Production machinery, foam systems such as one-shot prepolymer systems, and properties of rigid polyurethane foams used in refrigerators are among the topics discussed. Curing methods, in-place foaming, and bun foaming are also included. (Contains a minimum of 70 citations and includes a subject term index and title list.)

Not Available

1994-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "rigid foam insulation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

ENVIRONMENTALLY FRIENDLY PROCESSING OF POLYURETHANE FOAM FOR THERMAL INSULATION  

E-Print Network [OSTI]

ENVIRONMENTALLY FRIENDLY PROCESSING OF POLYURETHANE FOAM FOR THERMAL INSULATION CHANJOONG KIM was proposed and evaluated for the application of thermal insulation. For the production of polyurethane foam correspondence should be sent. #12;Key Words: Foam; Polyurethane; Thermal insulation; Nucleation; Growth

Kim, Chanjoong

22

Foam insulation for a liquid oxygen densifier  

Science Journals Connector (OSTI)

Analyses indicated that it would not be cost effective to vacuum insulate a 7 foot diameter by 30 foot long liquid nitrogen vessel for a launch facility liquid oxygen densifier. Foam insulation appeared to be the logical choice for this infrequently used ground support equipment but the history of foam problems due to cracking, adhesive failure and internal shearing weighed against the use of commercial spray-on material. These problems were solved with a system consisting of alternate sealing and flexible foam layers: (1) an inner membrane sealed to itself but not attached to the cold shell or pipe; (2) a flexible foam insulation layer; (3) a vapor-tight sealing membrane; (4) a second flexible foam insulation layer and (5) an outer aluminized sealing membrane. The second and subsequent layers are sealed to each underlying layer by flexible foam contact adhesive. The inner sealing membrane is particularly vital in that it allows the first foam layer to expand and contract as the tank temperature changes and it also protects the tank from chloride corrosion from the foam. This paper describes preliminary testing to prove out the system and the steps taken to install flexible foam insulation on the oxygen densifier vessel.

G.E. McIntosh; R. Stuckenschmidt

2012-01-01T23:59:59.000Z

23

Mechanism of high energy absorption by foamed materials-foamed rigid polyurethane and foamed glass  

Science Journals Connector (OSTI)

Energy absorbability of foamed rigid materials, polyurethane and glass, was studied under a compressive load. The brittle materials were proved to absorb much energy in a manner similar to ductile materials. A me...

Toshio Kurauchi; Norio Sato; Osami Kamigaito…

1984-03-01T23:59:59.000Z

24

10 - Polymeric foam materials for insulation in buildings  

Science Journals Connector (OSTI)

Abstract: This chapter discusses polymeric foams used mainly for building insulation with a view to saving energy. It deals first with a brief foam history, the necessary materials for foam production, the polymers and the foaming (blowing) agents, and the foaming mechanism. It continues with the type of processing polymers for foam production and underlines the thermoplastic and thermosetting foams manufactured for the construction industry. It ends with foam main properties and future trends in the field of polymeric insulation materials.

D. Feldman

2010-01-01T23:59:59.000Z

25

Reinforced Phenolic Foams for Thermal Insulation  

Science Journals Connector (OSTI)

The reported research is related to phenolic resins panels for thermal insulation. This research started from previous results on the fabrication of foams from powdered Novolaque phenolic resins without acid...

P. Dubois; C. Reinaudo; E. Morel; C. Chauvelier

1984-01-01T23:59:59.000Z

26

Vacuum insulation properties of phenolic foam  

Science Journals Connector (OSTI)

Characteristic properties of phenolic foam as the interstitial material of a vacuum insulation panel are investigated experimentally. For the measurement of effective thermal conductivity, a vacuum guarded hot plate (VGHP) apparatus is used and the conductivity is measured at various vacuum levels. Radiative properties are found using a Fourier transform infrared spectroscopy (FT-IR) device. Solid conductivity is estimated using the porosity of the foam. Effective thermal conductivity at high level of vacuum is measured to be 5 mW/m K which is sum of solid conductivity (2.56 mW/m K) and radiative conductivity (2.44 mW/m K) with 5% of measurement uncertainty. The pore size of the foam is estimated to be 260 ?m using rarefied gas conduction theory. This ensures insulation performance of phenolic foam up to about 10?3 atm. Other practical characteristics of phenolic foam as the VIP core material are also discussed.

Jongmin Kim; Jae-Hyug Lee; Tae-Ho Song

2012-01-01T23:59:59.000Z

27

Effects of foamed plastic insulation on severity of room fires  

Science Journals Connector (OSTI)

The results of a series of full scale room burn experiments with foamed plastic insulation in two walls indicate that the severity ... appear to be increased by the addition of foamed plastic insulation.

K. K. Choi

1986-02-01T23:59:59.000Z

28

Thermal radiative properties of phenolic foam insulation  

Science Journals Connector (OSTI)

Thermal insulation has long been an important subject in engineering. Foam insulations have become the most widely used insulations due to their low cost and ease of procesing. In recent years, phenolic foams find increasing applications because of their fire retardation. This paper presents experimental results of thermal radiative properties of phenolic foams, with or without activated carbon. Transmittance spectra were first taken using FTIR for samples of various densities. Extinction coefficient spectra were then obtained by applying Beer's law. Finally, by using the diffusion approximation, the Rosseland mean extinction coefficients and radiative thermal conductivities were obtained for various temperatures. Results show that the extinction coefficient increases with sample density. The addition of activated carbon increases the extinction coefficient slightly.

Chung-jen Tseng; Kuang-te Kuo

2002-01-01T23:59:59.000Z

29

Thermal Transport in High-Strength Polymethacrylimide (PMI) Foam Insulations  

Science Journals Connector (OSTI)

Thermal transport in high-strength polymethacrylimide (PMI) foam insulations is described, with special emphasis on the... $$3\\omega $$ ...

L. Qiu; X. H. Zheng; J. Zhu; D. W. Tang…

2014-06-01T23:59:59.000Z

30

Gasification of waste rigid polyurethane foam: optimizing operational conditions  

Science Journals Connector (OSTI)

The influence of temperature and catalyst type on production of combustible gas during the air gasification of waste rigid polyurethane foam has been...16 (43...) of three parameters was employed to optimize the...

Xiaoya Guo; Lixin Wang; Shouguang Li…

2014-07-01T23:59:59.000Z

31

Super Building Insulation by CO2 Foaming Process Research Project |  

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

Emerging Technologies » Super Building Insulation by CO2 Foaming Emerging Technologies » Super Building Insulation by CO2 Foaming Process Research Project Super Building Insulation by CO2 Foaming Process Research Project The Department of Energy is currently researching the development of building superinsulation through a carbon dioxide (CO2) foaming process. Project Description This project seeks to develop building super insulation through a carbon dioxide foaming process that does not use hydrofluorocarbons (HFCs), and which produces insulation with a high R-value. Project Partners Research is being undertaken between the Department of Energy and The Industrial Science & Technology Network. Project Goals The goal of this project is to develop advanced insulation without HFC, and to achieve a competitive processing cost for CO2 foaming technology.

32

Polyurethane and Polyisocyanurate Foams in External Tank Cryogenic Insulation  

Science Journals Connector (OSTI)

External tanks of the spacecrafts need not only efficient, but also safe cryogenic insulation materials and the issues of their development ... , polyurethane (PUR) or polyisocyanurate (PIR) foams’ cryogenic insulation

U. Stirna; I. Beverte; V. Yakushin; U. Cabulis

2013-01-01T23:59:59.000Z

33

Wind Pressure Resistance of Walls with Exterior Rigid Foam: Structural Performance Testing and Development of Design Specifications  

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

Wind Pressure Resistance of Wind Pressure Resistance of Walls with Exterior Rigid Foam: Structural Performance Testing and Development of Design Specifications Building America Stakeholder Meeting February 2012 2 Gaps and Barriers  Wind pressure resistance of multi- layered walls with exterior rigid foam * Performance characteristics * Capacity * Limitations * Design method * Design specification 3 Market Implications  Walls with exterior rigid foam  2012 IECC - Climate Zones 3 and higher  Wall systems:  Claddings and their attachments  Interior finishes  Air sealing, air barriers  Cavity insulation 4 Research Tasks  Laboratory Testing of Wall Assemblies under dynamic wind pressures at the NAHB Research Center  NAHB/DOE/ACC  Laboratory Testing of a One-story House in IBHS Wind Tunnel Facility

34

Accumulated CFC-11 in polyurethane foam insulation: an estimate of the total amount in district heating installations in Sweden  

Science Journals Connector (OSTI)

In rigid polyurethane foam used for thermal insulation, CFC-11 has been the main blowing agent for many years, but is now subject to phase-out regulations. During ageing of this foam, air diffuses into it and blowing agents leak into the atmosphere, resulting in a decreased insulating capacity. Determinations of the cell gas composition and the total content of CFC-11 in foam from district heating installations of different ages are reported in this paper. The total amount of CFC-11 in old district heating schemes in Sweden is estimated at 2000 tonnes. The amount in refrigeration equipment in Sweden is about twice as large.

M. Svanstrom

1996-01-01T23:59:59.000Z

35

Characterization of New Glass Coated Foam Glass Insulating Tiles by Standard Tests  

Science Journals Connector (OSTI)

A good thermal insulation of buildings is today more and more...1). Among insulating materials, foam glasses are increasing their importance because of...2). Foam glasses are fiber-free inorganic insulation mater...

Andrea Ventrella; Federico Smeacetto…

2012-11-01T23:59:59.000Z

36

A Structural Plastic Foam Thermal Insulation for Cryogenic Service  

Science Journals Connector (OSTI)

Today, with the impending energy crisis and the rush to construct LNG facilities as one method to alleviate the energy shortage, it is not surprising that we find plastic foams and other thermal insulating materi...

R. B. Bennett

1995-01-01T23:59:59.000Z

37

Fungi associated with urea-formaldehyde foam insulation in Canada  

Science Journals Connector (OSTI)

Sixty-eight fungal taxa were identified from samples of urea-formaldehyde foam insulation taken from Canadian residences. Mesophilic taxa were...Penicillium spp., Trichoderma harzianum and Paecilomyces variotii o...

John Bissett

1987-07-01T23:59:59.000Z

38

Experimental study on cryogenic moisture uptake in polyurethane foam insulation material  

Science Journals Connector (OSTI)

Rigid foam is widely used to insulate cryogenic tanks, in particular for space launch vehicles due to its lightweight, mechanical strength and thermal-insulating performance. Up to now, little information is available on the intrusion of moisture into the material under cryogenic conditions, which will bring substantial additional weight for the space vehicles at lift-off. A cryogenic moisture uptake apparatus has been designed and fabricated to measure the amount of water uptake into the polyurethane foam. One side of the specimen is exposed to an environment with high humidity and ambient temperature, while the other with cryogenic temperature at approximately 78 K. A total of 16 specimens were tested for up to 24 h to explore the effects of the surface thermal protection layer, the foam thickness, exposed time, the butt joints, and the material density on water uptake of the foam. The results are constructive for the applications of the foam to the cryogenic insulation system in space launch vehicles.

X.B. Zhang; L. Yao; L.M. Qiu; Z.H. Gan; R.P. Yang; X.J. Ma; Z.H. Liu

2012-01-01T23:59:59.000Z

39

Development of high void fraction polylactide composite foams using injection molding: Mechanical and thermal insulation properties  

Science Journals Connector (OSTI)

Abstract Polylactide (PLA) and PLA composites with void fractions as high as 65% were fabricated using low-pressure foam injection molding (FIM) and high-pressure FIM (HPFIM) equipped with mold opening and gas counter pressure. The cellular morphology and crystallinity were characterized using scanning electron microscopy and differential scanning calorimetry, respectively. The mechanical (flexural and impact resistance) and thermal insulation properties were also measured. Unlike, talc, the addition of nanoclay markedly enhanced the ductility of solid PLA samples as well as significantly improved the cell morphology of foamed samples, which resulted in the increased specific modulus, strength and impact resistance. In all the PLA samples made using HPFIM, with an increased void fraction up to 55%, the flexural rigidity increased up to four times, the specific impact resistance increased up to 15%, and the thermal insulation increased up to three times. The results of this investigation revealed that low-density PLA composite foams with improved rigidity, impact strength, and thermal insulation can be developed using HPFIM for various applications such as transportation and construction industries.

A. Ameli; D. Jahani; M. Nofar; P.U. Jung; C.B. Park

2014-01-01T23:59:59.000Z

40

The use of coated micropowders to reduce radiation heat transfer in foam insulation  

E-Print Network [OSTI]

Polyurethane foam is the most effective insulation currently available for buildings. Chlorofluorocarbon (CFC) blowing agents, which have low thermal conductivities, contribute highly to the effectiveness of this insulation. ...

Marge, Arlene Lanciani

1991-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "rigid foam insulation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Characterization of corrosive agents in polyurethane foams for thermal insulation of pipelines  

Science Journals Connector (OSTI)

Thermal insulated pipelines consists of a pipe, an optional anticorrosive coating, covered by rigid polyurethane (PU) foam and an outer casing made of high-density polyethylene (HDPE). In this paper, a methodology to investigate corrosion under thermal insulation and the compatibility between the polyurethane foams and anticorrosive coatings was developed. It consists of chemical, electrochemical and mass loss tests in aqueous extracts of the foams. The aqueous extracts were prepared according to an adaptation of ASTM C871 standard, taking into account the temperature range commonly employed in pipes operations of heavy petroleum derivatives. The chemical analysis of the extracts included pH, conductivity, phosphate, chloride and fluoride contents. Mass loss, electrochemical impedance and linear polarization were accomplished in autoclave. The influence of temperature, flame retardant and blowing agent was considered on the generation of corrosive agents. It was verified that the content of chloride in the foams is a very important parameter that must be controlled. Still in this paper, the compatibility of polyurethane foams with anticorrosive coatings is preliminary evaluated. The results show that investments on a proper coating selection are essential to guarantee good performance.

F.V.V. de Sousa; R.O. da Mota; J.P. Quintela; M.M. Vieira; I.C.P. Margarit; O.R. Mattos

2007-01-01T23:59:59.000Z

42

Fire spread in concealed foamed plastic insulation  

Science Journals Connector (OSTI)

A test program, jointly sponsored by the Society of the Plastics Industry of Canada and the National Research Council, examined the contribution of plastic foams to fire spread in buildings. The conditions und...

Dr. W. Taylor

1983-08-01T23:59:59.000Z

43

Polyol-Based Rigid Urethane Foam Systems Kansas City Division  

Office of Scientific and Technical Information (OSTI)

A Study of Polyether-Polyol- and Polyester- A Study of Polyether-Polyol- and Polyester- Polyol-Based Rigid Urethane Foam Systems Kansas City Division J. P. Madden, G. K. Baker, and 6. H. Smith BDX-613-531 Published September 1971 Replacement Copy Delivered December 1994 Approved for public release; distribution is unlimited Prepared Under Contract Number DE-AC04-76-DP00613 for the United States Department of Energy tlHSTRI8UVON OF THlS DOCUMENT I S UNUMED f- DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus,

44

Optimization of functionally graded metallic foam insulation under transient heat transfer conditions  

Science Journals Connector (OSTI)

The problem of minimizing the maximum temperature of a structure insulated by a functionally graded metal foam insulation under transient heat conduction is studied. First, the performance of insulation designed ...

H. Zhu; B.V. Sankar; R.T. Haftka…

2004-11-01T23:59:59.000Z

45

Honeywell's Solstice liquid blowing agent approved by EPA for foam insulation  

Science Journals Connector (OSTI)

Honeywell has announced that its new low global-warming-potential (LGWP) blowing agent for foam insulation has received final approval from the US Environmental Protection Agency under the latter's Significant New Alternatives Policy (SNAP) programme. The approval allows the company's Solstice™ Liquid Blowing Agent (LBA) to be used in foam insulation in refrigerators, spray foam insulation for residential and commercial buildings, insulated metal panels and other applications in the USA.

2012-01-01T23:59:59.000Z

46

Spray-on foam insulations for launch vehicle cryogenic tanks  

Science Journals Connector (OSTI)

Spray-on foam insulation (SOFI) has been developed for use on the cryogenic tanks of space launch vehicles beginning in the 1960s with the Apollo program. The use of SOFI was further developed for the Space Shuttle program. The External Tank (ET) of the Space Shuttle, consisting of a forward liquid oxygen tank in line with an aft liquid hydrogen tank, requires thermal insulation over its outer surface to prevent ice formation and avoid in-flight damage to the ceramic tile thermal protection system on the adjacent Orbiter. The insulation also provides system control and stability throughout the lengthy process of cooldown, loading, and replenishing the tank. There are two main types of SOFI used on the ET: acreage (with the rind) and closeout (machined surface). The thermal performance of the seemingly simple SOFI system is a complex array of many variables starting with the large temperature difference of 200–260 K through the typical 25-mm thickness. Environmental factors include air temperature and humidity, wind speed, solar exposure, and aging or weathering history. Additional factors include manufacturing details, launch processing operations, and number of cryogenic thermal cycles. The study of the cryogenic thermal performance of SOFI under large temperature differentials is the subject of this article. The amount of moisture taken into the foam during the cold soak phase, termed Cryogenic Moisture Uptake, must also be considered. The heat leakage rates through these foams were measured under representative conditions using laboratory standard liquid nitrogen boiloff apparatus. Test articles included baseline, aged, and weathered specimens. Testing was performed over the entire pressure range from high vacuum to ambient pressure. Values for apparent thermal conductivity and heat flux were calculated and compared with prior data. As the prior data of record was obtained for small temperature differentials on non-weathered foams, analysis of the different methods is provided. Recent advancements and applications of SOFI systems on future launch vehicles and spacecraft are also addressed.

J.E. Fesmire; B.E. Coffman; B.J. Meneghelli; K.W. Heckle

2012-01-01T23:59:59.000Z

47

Spray Foam Exterior Insulation with Stand-Off Furring  

SciTech Connect (OSTI)

IBACOS, in collaboration with GreenHomes America, was contracted by the New York State Energy Research and Development Authority to research exterior wall insulation solutions. This research investigated cost-effective deep energy retrofit (DER) solutions for improving the building shell exterior while achieving a cost-reduction goal, including reduced labor costs to reach a 50/50 split between material and labor. The strategies included exterior wall insulation plus energy upgrades as needed in the attic, mechanical and ventilation systems, and basement band joist, walls, and floors. The work can be integrated with other home improvements such as siding or window replacement. This strategy minimizes physical connections to existing wall studs, encapsulates existing siding materials (including lead paint) with spray foam, and creates a vented rain screen assembly to promote drying. GreenHomes America applied construction details created by IBACOS to a test home. 2x4 framing members were attached to the wall at band joists and top plates using 'L' clips, with spray foam insulating the wall after framing was installed. Windows were installed simultaneously with the framing, including extension jambs. The use of clips in specific areas provided the best strength potential, and 'picture framing' the spray foam held the 2x4s in place. Short-term testing was performed at this house, with monitoring equipment installed for long-term testing. Testing measurements will be provided in a later report, as well as utility impact (before and after), costs (labor and materials), construction time, standard specifications, and analysis for the exterior wall insulation strategy.

Herk, A.; Baker, R.; Prahl, D.

2014-03-01T23:59:59.000Z

48

Corrosion testing of urea-formaldehyde foam insulating material  

SciTech Connect (OSTI)

Two tests of the corrosiveness of urea-formaldehyde (UF) foam insulating materials were compared. One test, the Timm test, had test coupons foamed in place. In the second, the Canadian test, blocks of foam already set were placed in contact with test coupons. The Timm test uses 10 gage thick coupons, while the Canadian test specifies 3 mil thick ones. Two samples of UF foam were tested by the Timm and the Canadian tests. The electrical-resistance probes showed that the corrosion rate against steel was initially quite high, of the order of 12 to 20 mpy (mils per year). After about 20 days, the rate was almost zero. In the Timm test, the corrosion rates of steel coupons were of the order to 0.5 to 2 mpy when averaged over the 28 or 56 day test period. The greater corrosion rate of the thick coupons in the Canadian test as well as poor reproducibility of the corrosion rates was attributed primarily to variations in the contact areas between the sample and the UF foam. The corrosion rates of galvanized steel coupons in the Canadian test in several cases exceeded the failure value. In the Timm test, the corrosion rates averaged over the whole test period were quite low. The corrosion rates of copper and aluminum in both tests were quite low. On the basis of the results of this study the following recommendations for a corrosion-test procedure for UF foam were made: two corrosion tests should be conducted, one for foam while curing and one after it has stabilized; the Timm test for corrosiveness while curing should be used, but for only 1 to 2 days; the test for corrosiveness after stabilizing should be of the accelerated type such as the Canadian one. To insure a constant-contact area, thicker coupons should be used; and the coupons for both tests should have a controlled part of the area not in contact with the foam to simulate field conditions.

Weil, R.; Graviano, A.; Sheppard, K.

1980-09-01T23:59:59.000Z

49

Polyurethane/polyisocyanurate foam thermal insulation. (Latest citations from the Rubber and Plastics Research Association database). Published Search  

SciTech Connect (OSTI)

The bibliography contains citations concerning the use of polyisocyanurate/polyurethane foam for thermal insulation building materials. The topics discussed include flammability and smoke generation characteristics, building frame sheathing materials, fiber reinforcement, laminated insulation foam boards, substitution for controversial formaldehyde foams and aging characteristics. Performance evaluations of existing buildings with installed foam insulation are included. (Contains a minimum of 187 citations and includes a subject term index and title list.)

Not Available

1994-06-01T23:59:59.000Z

50

Time domain terahertz detection of flaws within space shuttle sprayed on foam insulation  

Science Journals Connector (OSTI)

We demonstrate the detection of voids and disbonds intentionally incorporated within the sprayed on foam insulation of a space shuttle external tank mock-up segment using time domain...

Zimdars, David A; Valdmanis, Janis A; White, Jeffrey S; Winfree, William P; Madaras, Eric I; Stuk, G

51

An experimental study of the heat transfer in PS foam insulation  

Science Journals Connector (OSTI)

Heat transfer mechanisms in 14 samples of vacuum insulation panels (VIPs) are examined to reveal the influence of porous foam structure on VIP performance. The samples were ... house equipment that was able to va...

Pen-Chang Tseng; Hsin-Sen Chu

2009-02-01T23:59:59.000Z

52

An Analytical Model for Determining the Thermal Conductivity of Closed-Cell Foam Insulation  

Science Journals Connector (OSTI)

The purpose of this paper is to present analytical methods and some preliminary test results for determining the thermal conductivity and net heat flow in closed-cell foam materials used as cryogenic insulation. ...

M. B. Hammond Jr.

1995-01-01T23:59:59.000Z

53

Foamed epoxy resin composite waterproofing and heat insulation in hydraulic construction  

Science Journals Connector (OSTI)

Laboratory and field tests and work on an experimental-industrial scale confimed the feasibility of using foamed epoxy resin heat insulation and waterproofing for protecting hydraulic engineering structures...

V. I. Sakharov

1969-05-01T23:59:59.000Z

54

Rigid Polyurethane Foam (RPF) Technology for Countermines (Sea) Program Phase II  

SciTech Connect (OSTI)

This Phase II report documents the results of one subtask initiated under the joint Department of Energy (DOE)/Department of Defense (DoD) Memorandum of Understanding (MOU) for Countermine Warfare. The development of Rigid Polyurethane Foams for neutralization of mines and barriers in amphibious assault was the objective of the tasking. This phase of the program concentrated on formation of RPF in water, explosive mine simulations, and development of foam and fabric pontoons. Field experimentation was done primarily at the Energetic Materials Research and Testing Center (EMRTC) of the New Mexico Institute of Mining and Technology, Socorro, NM between February 1996 and September 1998.

WOODFIN,RONALD L.; FAUCETT,DAVID L.; HANCE,BRADLEY G.; LATHAM,AMY E.; SCHMIDT,C.O.

1999-10-01T23:59:59.000Z

55

Honeywell developing low-GWP liquid blowing agent for foam insulation  

Science Journals Connector (OSTI)

Honeywell reports that it is developing a new blowing agent with low global warming potential (GWP) for energy-efficient polyurethane foam insulation. The non-flammable liquid blowing agent will provide customers with an alternative to hydrocarbons and traditional hydrofluorocarbons (HFCs) and assist customers in reducing the overall environmental impact of foam, the company says.

2009-01-01T23:59:59.000Z

56

APPLICATION OF POLYURETHANE FOAM FOR IMPACT ABSORPTION AND THERMAL INSULATION FOR RADIOACTIVE MATERIALS PACKAGINGS.  

SciTech Connect (OSTI)

Polyurethane foam has been widely used as an impact absorbing and thermal insulating material for large radioactive materials packages, since the 1980's. With the adoption of the regulatory crush test requirement, for smaller packages, polyurethane foam has been adopted as a replacement for cane fiberboard, because of its ability to withstand the crush test. Polyurethane foam is an engineered material whose composition is much more closely controlled than that of cane fiberboard. In addition, the properties of the foam can be controlled by controlling the density of the foam. The conditions under which the foam is formed, whether confined or unconfined have an affect on foam properties. The study reported here reviewed the application of polyurethane foam in RAM packagings and compared property values reported in the literature with published property values and test results for foam specimens taken from a prototype 9977 packaging. The study confirmed that, polyurethane foam behaves in a predictable and consistent manner and fully satisfies the functional requirements for impact absorption and thermal insulation.

Smith, A; Glenn Abramczyk, G; Paul Blanton, P; Steve Bellamy, S; William Daugherty, W; Sharon Williamson, S

2007-05-15T23:59:59.000Z

57

APPLICATION OF POLYURETHANE FOAM FOR IMPACT ABSORPTION AND THERMAL INSULATION FOR GENERAL PURPOSE RADIOACTIVE MATERIALS PACKAGINGS  

SciTech Connect (OSTI)

Polyurethane foam has been employed in impact limiters for large radioactive materials packagings since the early 1980's. Its consistent crush response, controllable structural properties and excellent thermal insulating characteristics have made it attractive as replacement for the widely used cane fiberboard for smaller, drum size packagings. Accordingly, polyurethane foam was chosen for the overpack material for the 9977 and 9978 packagings. The study reported here was undertaken to provide data to support the analyses performed as part of the development of the 9977 and 9978, and compared property values reported in the literature with published property values and test results for foam specimens taken from a prototype 9977 packaging. The study confirmed that, polyurethane foam behaves in a predictable and consistent manner and fully satisfies the functional requirements for impact absorption and thermal insulation.

Smith, A; Glenn Abramczyk, G; Paul Blanton, P; Steve Bellamy, S; William Daugherty, W; Sharon Williamson, S

2009-02-18T23:59:59.000Z

58

Sound insulation property of Al–Si closed-cell aluminum foam sandwich panels  

Science Journals Connector (OSTI)

Al–Si closed-cell aluminum foam sandwich panels (1240 mm × 1100 mm) of different thicknesses and different densities were prepared by molten body transitional foaming process in Northeastern University. The experiments were carried out to investigate the sound insulation property of Al–Si closed-cell aluminum foam sandwich panels of different thicknesses and different densities under different frequencies (100–4000 Hz). Results show that sound reduction index (R) is small under low frequencies, large under high frequencies; thickness affects the sound insulation property of material obviously: when the thicknesses of Al–Si closed-cell aluminum foam sandwich panels are 12, 22, and 32 mm, the corresponding weighted sound reduction indices (RW) are 26.3, 32.2, and 34.6 dB, respectively, the rising trend tempered; the increase of density of Al–Si closed-cell aluminum foam can also increase the sound insulation property: when the densities of aluminum foam are 0.31, 0.51, and 0.67 g/cm3, the corresponding weighted sound reduction indices (RW) are 28.9, 34.3, and 34.6 dB, the increasing value mitigating.

Haijun Yu; Guangchun Yao; Xiaolin Wang; Yihan Liu; Hongbin Li

2007-01-01T23:59:59.000Z

59

Net climatic impact of solid foam insulation produced with halocarbon and non-halocarbon blowing agents  

Science Journals Connector (OSTI)

The net climatic effect of increasing the amount of insulation in buildings through the use of halocarbon-blown foam insulation involves three factors: the greenhouse gas emissions associated with the energy used to make the insulation; the climatic impact of leakage of the halocarbon blowing agent from the insulation during its manufacture, use, and at the time of disposal; and the reduction in heating and/or cooling energy use and associated greenhouse gas emissions. Recent studies and assessments leave the impression that the use of halocarbon-blown foam insulation has a strong net positive impact on climate, with the reduction in heating-related emissions being 20–100 times greater than the CO2-equivalent halocarbon emissions. This result applies only to the overall impact of rather modest levels of insulation applied to a pre-existing roof or wall with negligible thermal resistance. It is appropriate to consider the time required for heating-related emission savings to offset halocarbon and manufacturing emissions for the addition of successive increments of insulation—the marginal payback time. For typical blowing agent leakage rates and for insulation levels found in high-performance houses, marginal payback times can be in excess of 100 years using halocarbon blowing agents, but are only 10–50 years using non-halocarbon blowing agents. With a fixed thickness of insulation, the difference in heating energy savings using insulation with different blowing agents is generally only a few per cent, in spite of differences in thermal conductivity of up to 66%. The net savings in CO2-equivalent emissions is larger using non-halocarbon blowing agents, with the relative benefit of using non-halocarbon blowing agents greater the greater the thermal resistance of the envelope element prior to adding foam insulation.

L.D. Danny Harvey

2007-01-01T23:59:59.000Z

60

Heat transfer in open cell polyurethane foam insulation  

Science Journals Connector (OSTI)

This paper study systematic investigates the combined conductive and non-gray radiative heat transfer of open cell polyurethane (PU) foam in the pressure range between 760 and 0.02?Torr. Direct transmission m...

J.-W. Wu; H.-S. Chu

1998-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "rigid foam insulation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Building America Top Innovations 2013 Profile Â… Exterior Rigid Insulation Best Practices  

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

teams has provided the critical scientific basis for acceptance of foam sheathing by the codes community and understanding of the best practices for implementation to ensure thermal performance as well as air barrier and drainage plane integrity. Although rigid foam has long been recognized as one of the key Building America technologies for high-R walls, the practice lacked a precise engineering basis for the basic elements of the wall system such as foam thickness, connection schedules, and cladding requirements to resist wind loading. As prescriptive construction provisions in residential building codes came under increased scrutiny in building code forums, the need for a consistent, building-science-based methodology became apparent. Research by the Partnership for Home Innovation, led by the Home

62

Building America Top Innovations 2013 Profile Â… Exterior Rigid Insulation Best Practices  

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

teams teams has provided the critical scientific basis for acceptance of foam sheathing by the codes community and an understanding of best practices for installation to ensure thermal performance as well as air barrier and drainage plane integrity. Although rigid foam has long been recognized as one of the key Building America technologies for high-R walls, the practice lacked a precise engineering basis for the basic elements of the wall system such as foam thickness, connection schedules, and cladding requirements to resist wind loading. As prescriptive construction provisions in residential building codes came under increased scrutiny in building code forums, the need for a consistent, building-science-based methodology became apparent. Research by the Partnership for Home Innovation led by the Home

63

Tips: Insulation | Department of Energy  

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

Insulation Insulation Tips: Insulation May 2, 2012 - 6:03pm Addthis Where to Insulate. Adding insulation in the areas shown here may be the best way to improve your home's energy efficiency. Insulate either the attic floor or under the roof. Check with a contractor about crawl space or basement insulation. Where to Insulate. Adding insulation in the areas shown here may be the best way to improve your home's energy efficiency. Insulate either the attic floor or under the roof. Check with a contractor about crawl space or basement insulation. Insulation is made from a variety of materials, and it usually comes in four types: rolls and batts, loose-fill, rigid foam, and foam-in-place. Rolls and Batts Rolls and batts -- or blankets -- are flexible products made from mineral

64

Laser Shearographic Testing of Foam Insulation on Cryogenic Fuel Tanks  

Science Journals Connector (OSTI)

The Centaur is a high-energy rocket used as a second stage to the Atlas launch vehicle. The Centaur is cryogenically fueled, using liquid hydrogen and liquid oxygen, and requires insulation to prevent fuel boi...

Douglas D. Burleigh; James E. Engel…

1993-01-01T23:59:59.000Z

65

Insulation Materials | Department of Energy  

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

Insulation Materials Insulation Materials Insulation Materials May 30, 2012 - 10:08am Addthis Cellulose, a fiber insulation material with a high recycled content, is blown into a home attic. | Photo courtesy of Cellulose Insulation Manufacturers Association. Cellulose, a fiber insulation material with a high recycled content, is blown into a home attic. | Photo courtesy of Cellulose Insulation Manufacturers Association. Blown-in fiberglass insulation thoroughly fills the stud cavities in this home. | Photo courtesy of Bob Hendron, NREL. Blown-in fiberglass insulation thoroughly fills the stud cavities in this home. | Photo courtesy of Bob Hendron, NREL. Rigid foam board adds R-value to this wall in a Florida home. | Photo courtesy of FSEC/IBACOS. Rigid foam board adds R-value to this wall in a Florida home. | Photo

66

Experience gained from the use of polyurethane foam-insulated pipelines at OAO Moscow Heating-Network Company  

Science Journals Connector (OSTI)

Results from 10 years of experience using polyurethane foam-insulated pipelines at OAO Moscow Heating-Network Co. are presented. It is shown that the failure rate of such pipelines is considerably lower than t...

V. I. Kashinskii; V. M. Lipovskikh; Ya. G. Rotmistrov

2007-07-01T23:59:59.000Z

67

Detection of space shuttle insulation foam defects by using a 0.2 THz Gunn diode oscillator and pyroelectric detector  

Science Journals Connector (OSTI)

We report detection of space shuttle insulation foam defects by using a 0.2 THz Gunn diode oscillator as the light source, and a pyroelectric camera as the detector. The size and...

Zhong, Hua; Karpowicz, Nick; Xu, Jingzhou; Deng, Yanqing; Ussery, Warren; Shur, Michael; Zhang, Xi-Cheng

68

Elasticity of a cryo-insulation polymer foam coating in the temperature range 8–293 K  

Science Journals Connector (OSTI)

An apparatus is developed for investigating the dynamic deformation properties of cryoinsulation coatings in the temperature range 8–293 K. One type of cryo-insulation material — polyurethane foam — is chosen as ...

L. A. Bulavin; Yu. F. Zabashta; A. Ya. Fridman; A. I. Kostyuk

1999-02-01T23:59:59.000Z

69

Building America Webinar: High Performance Enclosure Strategies: Part II, New Construction- August 13, 2014- Cladding Attachment Over Thick Exterior Rigid Insulation  

Broader source: Energy.gov [DOE]

This presentation, Cladding Attachment Over Thick Rigid Exterior Insulation, was delivered at the Building America webinar on August 13, 2014.

70

Application of Spray Foam Insulation Under Plywood and Oriented Strand Board Roof Sheathing  

SciTech Connect (OSTI)

Unvented roof strategies with open cell and closed cell spray polyurethane foam insulation sprayed to the underside of roof sheathing have been used since the mid-1990's to provide durable and efficient building enclosures. However, there have been isolated moisture related incidents reported anecdotally that raise potential concerns about the overall hygrothermal performance of these systems. The incidents related to rainwater leakage and condensation concerns. Condensation concerns have been extensively studied by others and are not further discussed in this report. This project involved hygrothermal modeling of a range of rainwater leakage and field evaluations of in-service residential roofs using spray foam insulation. All of the roof assemblies modeled exhibited drying capacity to handle minor rainwater leakage. All field evaluation locations of in-service residential roofs had moisture contents well within the safe range for wood-based sheathing. Explorations of eleven in-service roof systems were completed. The exploration involved taking a sample of spray foam from the underside of the roof sheathing, exposing the sheathing, then taking a moisture content reading. All locations had moisture contents well within the safe range for wood-based sheathing. One full-roof failure was reviewed, as an industry partner was involved with replacing structurally failed roof sheathing. In this case the manufacturer's investigation report concluded that the spray foam was installed on wet OSB based on the observation that the spray foam did not adhere well to the substrate and the pore structure of the closed cell spray foam at the ccSPF/OSB interface was indicative of a wet substrate.

Grin, A.; Smegal, J.; Lstiburek, J.

2013-10-01T23:59:59.000Z

71

Cryogenic sandwich-type insulation board composed of E-glass/epoxy composite and polymeric foams  

Science Journals Connector (OSTI)

Liquefied natural gas (LNG) is a clean energy source whose consumption has recently increased greatly due to the failure of a nuclear power plant. LNG is transported with LNG carriers that store LNG at the cryogenic temperature of ?163 °C. Because the cargo containment system (CCS) of LNG carriers should be operated for more than 40 years at the cryogenic temperature, its reliability against thermal and mechanical loads should be guaranteed without compromising its thermal insulation performance. For reasons of both mechanical and thermal performance, the faces and cores of conventional insulation boards are made of plywood and high-density (110 kg/m3) polymeric. In this study, an advanced sandwich-type insulation board composed of E-glass/epoxy composite faces and a low-density polymeric foam core with a composite box configuration was developed to seal a foam blowing gas of low thermal conductivity. The mechanical performance of the advanced sandwich-type insulation board was simulated using the finite element analysis (FEA) software ABAQUS (SIMULIA, USA). The sealing performance of the composite box was also investigated experimentally. Finally, the thermal performance of the advanced sandwich-type insulation board was numerically investigated using thermal conductivity equations.

Ilbeom Choi; Young Ho Yu; Dai Gil Lee

2013-01-01T23:59:59.000Z

72

Sound insulation property of Al-Si closed-cell aluminum foam bare board material  

Science Journals Connector (OSTI)

A1-Si closed-cell aluminum foam bare boards of 1?240 mm×1?100 mm with different densities and thicknesses were prepared by molten body transitional foaming process. The sound reduction index(R) of AI-Si closed-cell aluminum foam bare boards was investigated experimentally under different frequencies (100-4?000 Hz). It is found that sound reduction index(R) is small under low frequencies, large under high frequencies and is controlled by different mechanisms. The sound insulation property basically conforms with the monolayer board sound insulation theory. The sound reduction index(R) increases with the even growth of thickness and density, but its rising trend is tempered. The single number sound reduction indexes(Rw) of specimen with thickness of 20 cm and density of 0.51 g/cm3 are 30.8 dB and 33 dB respectively, which demonstrates good sound insulation property for lightmass materials.

Hai-jun YU; Guang-chun YAO; Xiao-lin WANG; Bing LI; Yao YIN; Ke LIU

2007-01-01T23:59:59.000Z

73

Steady-State Thermal Performance Evaluation of Steel-Framed Wall Assembly with Local Foam Insulation  

SciTech Connect (OSTI)

During January and May, 2009, two configurations of steel-framed walls constructed with conventional 2 4 steel studs insulated with R-19 ~14cm. (5.5-in. thick) and R-13 ~9cm. (3.5-in. thick) fiberglass insulation batts were tested in the Oak Ridge National Laboratory (ORNL) guarded hot-box using ASTM C1363 test procedure. The first test wall used conventional 2 4 steel studs insulated with 2.5-cm. (1-in.) thick foam profiles, called stud snugglers. These stud snugglers converted the 2 4 wall assembly into a 2 6 assembly allowing application of R-19 fiberglass insulation. The second wall tested for comparison was a conventional 2 4 steel stud wall using R-13 insulation batts. Further, numerical simulations were performed in order to evaluate the steady-state thermal performance of various wood- and steel-framed wall assemblies. The effects of adding the stud-snugglers to the wood and steel studs were also investigated numerically. Different combinations of insulation and framing factor were used in the simulations.

Kosny, Jan [ORNL] [ORNL; Biswas, Kaushik [ORNL] [ORNL; Childs, Phillip W [ORNL] [ORNL

2010-01-01T23:59:59.000Z

74

Insulation Materials | Department of Energy  

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

Materials Materials Insulation Materials May 30, 2012 - 10:08am Addthis Cellulose, a fiber insulation material with a high recycled content, is blown into a home attic. | Photo courtesy of Cellulose Insulation Manufacturers Association. Cellulose, a fiber insulation material with a high recycled content, is blown into a home attic. | Photo courtesy of Cellulose Insulation Manufacturers Association. Blown-in fiberglass insulation thoroughly fills the stud cavities in this home. | Photo courtesy of Bob Hendron, NREL. Blown-in fiberglass insulation thoroughly fills the stud cavities in this home. | Photo courtesy of Bob Hendron, NREL. Rigid foam board adds R-value to this wall in a Florida home. | Photo courtesy of FSEC/IBACOS. Rigid foam board adds R-value to this wall in a Florida home. | Photo

75

Aging of polyurethane insulation foamed with second- and third-generation blowing agents  

SciTech Connect (OSTI)

Results are presented on two studies of the effect of aging on the apparent thermal conductivity of polyurethane foam insulation for refrigerators. Both studies are cooperative projects between the Oak Ridge National Laboratory and the Appliance Research Consortium. The first study has been ongoing for four years and involves evaluation of second generation blowing agents: HCFC-141b and HCFC-142/22 blend with CFC-11 for comparison. The second study has recently started and involves third generation blowing agents: HFC-134a, HFC-245fa. and cyclopentane with HCFC-141b for comparison. Both studies consist of periodic thermal measurements on panels made with solid steel and/or plastic skins and a core of foam to simulate refrigerator walls, and measurements on thin slices with cut faces to characterize the core foam. Laboratory data are presented on four years of aging of panels containing second generation blowing agents. Preliminary data are presented for the third generation blowing agents. The data on panels are compared with predictions of computer models of foam aging.

Wilkes, K.E.; Gabbard, W.A.; Weaver, F.J.

1998-05-01T23:59:59.000Z

76

In situ performance evaluation of spray polyurethane foam in the exterior insulation basement system (EIBS)  

Science Journals Connector (OSTI)

In 1995, a joint research project11The consortium included Canadian Plastics Industry Association, Expanded Polystyrene Association of Canada, Canadian Urethane Foam Contractors Association, Owens Corning Inc. and Roxul Inc. with the Institute for Research in Construction was initiated to assess the in situ thermal performance of a number of insulation products used as exterior basement insulation in contact with the ground. Sixteen insulation specimens measuring 610 mm and 1220 mm wide were installed on the exterior basement walls of an experimental building, test hut no. 1, located on NRC campus in Ottawa. These specimens were instrumented prior to backfilling and their thermal performance was monitored over two full years. Soil temperatures and moisture content were monitored concurrently. Weather events were recorded daily. This paper focuses on the performance of the two spray polyurethane foam (SPF) specimens assessed in this experiment. Through analysis of the surface temperatures of the specimens, water movement was detected at the insulation/soil interface through various periods of heavy rain and major thaws throughout the two-year period. Over the same period, the surface of the concrete on the inside of the insulation showed no evidence of water penetration through the SPF layer. The insulation specimens were retrieved after 31 months of exposure in the soil. Good and continuous surface adhesion was also noted on removal. Samples were taken from these exposed specimens. When tested in the lab, after recovery and drying of the specimens, the compressive strengths of the SPF samples were slightly higher than those tested at the beginning of the experiment. For the conditions recorded over two years of monitoring, the thermal performance of each insulation specimen was found to be stable through the heating season. The thermal performance appeared not to be significantly affected by water movement at the exterior face of the insulation. One SPF specimen showed steady thermal performance through two heating seasons while the other actually improved in the second year. It was concluded that the key performance factors of the 76 mm thick SPF specimens sprayed on the exterior surfaces of the concrete basement wall all remained at a very good level, i.e., the in situ thermal resistance, the compressive strength, and the moisture contents of the specimens.

M.C. Swinton; W. Maref; M.T. Bomberg; M.K. Kumaran; N. Normandin

2006-01-01T23:59:59.000Z

77

Aging of polyurethane foam insulation in simulated refrigerator panels -- Initial results with third-generation blowing agents  

SciTech Connect (OSTI)

Laboratory data are presented on the effect of constant-temperature aging on the apparent thermal conductivity of polyurethane foam insulation for refrigerators and freezers. The foam specimens were blown with HCFC-141b and with three of its potential replacements -- HFC-134a, HFC-245fa, and cyclopentane. Specimens were aged at constant temperatures of 90 F, 40 F, and {minus}10 F. Thermal conductivity measurements were made on two types of specimens: full-thickness simulated refrigerator panels containing foam enclosed between solid plastic sheets, and thin slices of core foam cut from similar panels. Results are presented for about 250 days of aging for the core-foam specimens and for the first six months of aging for the full-thickness panels.

Wilkes, K.E.; Gabbard, W.A.; Weaver, F.J.

1998-11-01T23:59:59.000Z

78

Aging of Polyurethane Foam Insulation in Simulated Refrigerator Panels--One-Year Results with Third-Generation Blowing Agents  

SciTech Connect (OSTI)

Laboratory data are presented on the effect of constant-temperature aging on the apparent thermal conductivity of polyurethane foam insulation for refrigerators and freezers. The foam specimens were blown with HCFC-141b and with three of its potential replacements--HFC-134a, HFC-245fa, and cyclopentane. Specimens were aged at constant temperatures of 90 F, 40 F, and {minus}10 F. Thermal conductivity measurements were made on two types of specimens: full-thickness simulated refrigerator panels containing foam enclosed between solid plastic sheets, and thin slices of core foam cut from similar panels. Results are presented for the first year of a multi-year study for the full-thickness panels and for about 1-1/2 years of aging for the core-foam specimens.

Gabbard, W.A.; Weaver, F.J.; Wilkes, K.E.

1999-09-27T23:59:59.000Z

79

Application of Spray Foam Insulation Under Plywood and OSB Roof Sheathing (Fact Sheet)  

SciTech Connect (OSTI)

Spray polyurethane foams (SPFs) have advantages over alternative insulation methods because they provide air sealing in complex assemblies, particularly roofs. Spray foam can provide the thermal, air, and vapor control layers in both new and retrofit construction. Unvented roof strategies with open cell and closed cell SPF insulation sprayed to the underside of roof sheathing have been used since the mid-1990s to provide durable and efficient building enclosures. However, there have been isolated incidents of failures (either sheathing rot or SPF delamination) that raise some general concerns about the hygrothermal performance and durability of these systems. The primary risks for roof systems are rainwater leaks, condensation from diffusion and air leakage, and built-in construction moisture. This project directly investigated rain and indirectly investigated built-in construction moisture and vapor drives. Research involved both hygrothermal modeling of a range of rain water leakage scenarios and field evaluations of in-service residential roofs. Other variables considered were climate zone, orientation, interior relative humidity, and the vapor permeance of the coating applied to the interior face of open cell SPF.

Not Available

2013-11-01T23:59:59.000Z

80

Initial and Long-Term Movement of Cladding Installed Over Exterior Rigid Insulation  

SciTech Connect (OSTI)

Changes in the International Energy Conservation Code (IECC) from 2009 to 2012 have resulted in the use of exterior rigid insulation becoming part of the prescriptive code requirements. With more jurisdictions adopting the 2012 IECC builders are going to finding themselves required to incorporate exterior insulation in the construction of their exterior wall assemblies. For thick layers of exterior insulation (levels greater than 1.5 inches), the use wood furring strips attached through the insulation back to the structure has been used by many contractors and designers as a means to provide a convenient cladding attachment location. However, there has been a significant resistance to its widespread implementation due to a lack of research and understanding of the mechanisms involved and potential creep effects of the assembly under the sustained dead load of a cladding. This research was an extension on previous research conducted by BSC in 2011, and 2012. Each year the understanding of the system discrete load component interactions, as well as impacts of environmental loading has increased. The focus of the research was to examine more closely the impacts of screw fastener bending on the total system capacity, effects of thermal expansion and contraction of materials on the compressive forces in the assembly, as well as to analyze a full years worth of cladding movement data from assemblies constructed in an exposed outdoor environment.

Baker, P.

2014-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "rigid foam insulation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Measure Guideline: Hybrid Foundation Insulation Retrofits  

SciTech Connect (OSTI)

This measure guideline provides recommendations for designs and variations for retrofit hybrid assemblies in improving interior foundation insulation and water management of basements. Variations include closed cell spray foam (ccSPF) with membrane waterproofing or air gap membrane drainage layers, rigid board foam insulation at flat walls (cast concrete or CMU block), a 'partial drainage' detail making use of the bulk water drainage that occurs through the field of a rubble stone wall, and non-drained spray foam assemblies (including slab insulation).

Ueno, K.; Lstiburek, J.

2012-05-01T23:59:59.000Z

82

Failure analysis of reinforced polyurethane foam-based LNG insulation structure using damage-coupled finite element analysis  

Science Journals Connector (OSTI)

Abstract The primary aim of this study was to develop a unified anisotropic elasto-viscoplastic-damage model that describes the material nonlinear behavior and damage/crack growth of a reinforced polyurethane foam-based liquefied natural gas carrier insulation system. A Bodner–Partom unified elasto-viscoplastic model independent of the yield surface and loading history was expanded to an anisotropic unified model. To predict the damage growth and the crack initiation/growth of reinforced polyurethane foam, a Bodner–Chan damage model was applied to the proposed unified elasto-viscoplastic-damage model. The developed mechanical model was implicitly formulated and implemented into an ABAQUS user-defined material subroutine. To validate the proposed numerical method, the simulation results were compared with the results of a series of static uniaxial tests and dynamic cyclic tests conducted on the reinforced polyurethane foam and the liquefied natural gas carrier insulation system, respectively.

Chi-Seung Lee; Jae-Myung Lee

2014-01-01T23:59:59.000Z

83

Aging of Polyurethane Foam Insulation in Simulated Refrigerator Panels--Three-Year Results with Third-Generation Blowing Agents  

SciTech Connect (OSTI)

Laboratory data are presented on the effect of constant-temperature aging on the apparent thermal conductivity of polyurethane foam insulation for refrigerators and freezers. The foam specimens were blown with HCFC-141b and with three of its potential replacements--HFC-134a, HFC-245fa, and cyclopentane. Specimens were aged at constant temperatures of 90 F, 40 F, and -10 F. Thermal conductivity measurements were made on two types of specimens: full-thickness simulated refrigerator panels containing foam enclosed between solid plastic sheets, and thin slices of core foam cut from similar panels. Results are presented for the first three years of a multi-year aging study. Preliminary comparisons of measured data with predictions of a mathematical aging model are presented.

Wilkes, K.E.

2001-05-29T23:59:59.000Z

84

Aging of Polyurethane Foam Insulation in Simulated Refrigerator Panels--Two-Year Results with Third-Generation Blowing Agents  

SciTech Connect (OSTI)

Laboratory data are presented on the effect of constant-temperature aging on the apparent thermal conductivity of polyurethane foam insulation for refrigerators and freezers. The foam specimens were blown with HCFC-141b and with three of its potential replacements--HFC-134a, HFC-245fa, and cyclopentane. Specimens were aged at constant temperatures of 90 F, 40 F, and {minus}10 F. Thermal conductivity measurements were made on two types of specimens: full-thickness simulated refrigerator panels containing foam enclosed between solid plastic sheets, and thin slices of core foam cut from similar panels. Results are presented for the first two years of a multi-year aging study. Preliminary comparisons of measured data with predictions of a mathematical aging model are presented.

Wilkes, K.E.

2001-02-14T23:59:59.000Z

85

EVALUATION OF THERMAL CONDUCTIVITY OF INSTALLED-IN-PLACE POLYURETHANE FOAM INSULATION BY EXPERIMENT AND ANALYSIS  

SciTech Connect (OSTI)

In the thermal analysis of the 9977 package, it was found that calculated temperatures, determined using a typical thermal analysis code, did not match those measured in the experimental apparatus. The analysis indicated that the thermal resistance of the overpack in the experimental apparatus was less than that expected, based on manufacturer's reported value of thermal conductivity. To resolve this question, the thermal conductivity of the installed foam was evaluated from the experimental results, using a simplified analysis. This study confirmed that the thermal resistance of the experimental apparatus was lower than that which would result from the manufacturer's published values for thermal conductivity of the foam insulation. The test package was sectioned to obtain samples for measurement of material properties. In the course of the destructive examination a large uninsulated region was found at the bottom of the package, which accounted for the anomalous results. Subsequent measurement of thermal conductivity confirmed the manufacturer's published values. The study provides useful insight into the use of simplified, scoping calculations for evaluation of thermal performance of packages.

Smith, A; Bruce Hardy, B; Kurt Eberl, K; Nick Gupta, N

2007-12-05T23:59:59.000Z

86

Evaluating the bonding condition of NASA spray on foam insulation (SOFI) using audio frequency sound absorption measurements  

Science Journals Connector (OSTI)

The bonding condition of the spray on foam insulation (SOFI) used to insulate the external tank of the NASA space shuttle can be found by using the audio frequency sound absorption coefficient. The ASTM E1050 standard method for sound absorptionmeasurements was used with an open?ended 1?in?diam cast acrylic impedance tube sealed to the SOFI with closed cell PVC foam. Two artificially disbonded locations measuring 1.0 in. by 5.5 in. by 0.0625 in. and 2.0 in. by 8.0 in. by 0.0625 in. were detected by peaks in the sound absorption coefficient spectrum. The peaks in the sound absorptionspectrum between 1000 and 4000 Hz were 25% to 50% higher over disbonded areas when compared to bonded locations. The maximum and minimum sound absorption levels for the foam ranged between approximately 0.1 and 0.3. The entire sample was scanned using the sound absorption peaks as indicators. Samples of 2?in.?thick polystyrene foam were used with different sized defects at different locations in the foam to relate defect size and location to peaks in absorption coeffi?cient spectrum. [Work supported by NASA under Award No. NAG102098.

2005-01-01T23:59:59.000Z

87

Thermographic analysis of polyurethane foams integrated with phase change materials designed for dynamic thermal insulation in refrigerated transport  

Science Journals Connector (OSTI)

Abstract The dispersion process of a micro-encapsulated phase change material (n-tetradecane) into a polyurethane foam was studied in order to develop a micro-composite insulating material with both low thermal conductivity and latent heat storage properties. The maximum weight content of micro-capsules added to the cellular matrix was 13.5%. Dynamic thermal properties of hybrid foams were investigated by means of a thermographic analysis. This was found to be a very effective diagnostic technique in detecting the change in heat transfer rate across the micro-composite foam in an indirect way, i.e. by measuring how the surface temperature changes over time under heat irradiation. Such a material would be of interest in the field of transport of perishable goods, particularly those requiring a controlled regime of carriage/storage temperatures.

Andrea Tinti; Antonella Tarzia; Alessandra Passaro; Riccardo Angiuli

2014-01-01T23:59:59.000Z

88

Structural insulated panels produced from recycled Expanded-Polystrene (EPS) foam scrap. Final report  

SciTech Connect (OSTI)

This report documents a research project undertaken to assess the feasibility of using scrap reground expanded polystyrene (EPS) in the manufacture of structural insulated panels (SIPs) in order to save material costs and reduce the amount of EPS waste products to be disposed. The project team, managed by Steven Winter Associates, Inc., a Norwalk, Connecticut-based building systems research and consulting firm included: Thermal Foams, Inc., a Buffalo-based manufacturer of EPS products; BASF Corp., the world`s largest producer of EPS beads; Oak Ridge National Laboratory, which performed thermal tests (ASTM C-518); RADCO, Inc. which performed material properties tests: density (ASTM C-303), flexural strength (ASTM C-203), tensile strength (ASTM D-1623), and transverse load test of SIPs panels (ASTM E-72). The report documents the manufacturing and testing process and concludes that there was relatively little difference in the thermal and structural characteristics under normal loading conditions of the panels tested with varying amount of regrind (from 10% - 25%) and those made with 100% virgin beads. The report recommends that additional tests be undertaken, but suggests that, based on the test results, reground EPS can be successfully used in the cores of SIPs in amounts up to 25%.

Grinnell, A.

1996-11-01T23:59:59.000Z

89

Thermal and mechanical properties of polyurethane foams and a survey of insulating concretes at cryogenic temperatures. Final report, January 1979-February 1984  

SciTech Connect (OSTI)

Thermal and mechanical properties of expanded plastics, foams, are reported. The system studied was rigid, closed cell, CCl/sub 3/F blown, polyether based polyurethane. The primary temperature range of study was 100 to 300 K; however, several properties were determined to 4 K. The nominal densities of the foams tested were 32, 64, and 96 kg/cu m. Properties reported are thermal conductivity, thermal expansion, strength and moduli in tension and in compression, proportional limit, yield strength, ultimate strength, and shear strength. Physical properties were determined both parallel and perpendicular to the orthogonal axes of the bulk supplies. The gas content of the specimens was determined using a gas chromatograph-mass spectrometer and with a gas displacement pycnometer. Empirical procedures for estimating the temperature dependent thermophysical properties were developed. These procedures are based on the experimental data and utilize the characterization parameters for molar gas concentration, gas pressure, and cell morphology. Regulations affecting vapor dispersion in the area around liquefied natural gas facilities make it attractive to construct dikes and impounding areas out of materials having low thermal conductivities. Several insulating concretes have the general properties required for such applications. Screening tests were done to determine the thermal conductivity, modulus of rupture, and the compressive strength of several polyester based materials with glass bead or perlite aggregate and of portland cement based materials with vermiculite or polystyrene aggregate. A bibliography resulting from an extensive literature survey of lightweight concretes is presented. Seven of the references which were particularly applicable are presented in annotated form.

Sparks, L.L.; Arvidson, J.M.

1984-04-01T23:59:59.000Z

90

Application of Spray Foam Insulation Under Plywood and OSB Roof Sheathing (Fact Sheet), Building America Case Study: Technology Solutions for New and Existing Homes, Building Technologies Office (BTO)  

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

Application of Spray Foam Application of Spray Foam Insulation Under Plywood and OSB Roof Sheathing PROJECT aPPliCaTiON Construction: Existing homes with unvented cathedralized roofs. Type: Residential Climate Zones: All TEam mEmbERs Building Science Corporation www.buildingscience.com BASF www.basf.com Dow Chemical Company www.dow.com Honeywell http://honeywell.com Icynene www.icynene.com COdE COmPliaNCE 2012 International Code Council, International Residential Code Spray polyurethane foams (SPFs) have advantages over alternative insulation methods because they provide air sealing in complex assemblies, particularly roofs. Spray foam can provide the thermal, air, and vapor control layers in both new and retrofit construction. Unvented roof strategies with open cell and

91

Destruction behavior of hexabromocyclododecanes during incineration of solid waste containing expanded and extruded polystyrene insulation foams  

Science Journals Connector (OSTI)

Abstract Hexabromocyclododecanes (HBCDs) have been used for flame retardation mainly in expanded polystyrene (EPS) and extruded polystyrene (XPS) insulation foams. Controlled incineration experiments with solid wastes containing each of EPS and XPS were conducted using a pilot-scale incinerator to investigate the destruction behavior of \\{HBCDs\\} and their influence on the formation of polybrominated dibenzo-p-dioxins and dibenzofurans (PBDD/DFs). EPS and XPS materials were respectively blended with refuse derived fuel (RDF) as input wastes for incineration. Concentrations of \\{HBCDs\\} contained in the EPS- and XPS-added RDFs, were 140 and 1100 mg kg?1, respectively. In which ?-HBCD was dominant (68% of the total HBCD content) in EPS-added RDF and ?-HBCD accounted for 73% of the total \\{HBCDs\\} in XPS-added RDF. During the incineration experiments with EPS and XPS, primary and secondary combustion zones were maintained at temperatures of 840 °C and 900 °C. The residence times of waste in the primary combustion zone and flue gas in the secondary combustion zone was 30 min and three seconds, respectively. \\{HBCDs\\} were steadily degraded in the combustion chambers and ?-, ?-, and ?-HBCD behaved similarly. Concentration levels of the total \\{HBCDs\\} in the bag filter exit gas for the two experiments with EPS and XPS were 0.7 and 0.6 ng  m N - 3 , respectively. \\{HBCDs\\} were also not detected (<0.2 ng g?1) in the bottom and fly ash samples. From the obtained results, it was calculated that \\{HBCDs\\} were sufficiently destroyed in the whole incineration process with destruction efficiencies of more than 99.9999 for both of EPS and XPS cases. For PBDD/DFs, the levels detected in the bottom and fly ash samples were very low (0.028 ng g?1 at maximum). In the case of XPS-added experiment, 2,3,7,8-TeBDD and 2,3,7,8-TeBDF were determined in the flue gas at levels (0.05–0.07 ng  m N - 3 ) slightly over the detection limits in the environmental emission gas samples, suggesting \\{HBCDs\\} in XPS are possibly a precursor of detected PBDD/DFs. Operational care should be taken when the ratio of HBCD-containing polystyrene is increased in the input wastes just to make sure of formation prevention and emission control of PBDD/DFs. The concentrations and congener patterns of PCDD/DFs and dl-PCBs in the samples during the three experiments were not affected by an addition of HBCDs.

Hidetaka Takigami; Mafumi Watanabe; Natsuko Kajiwara

2014-01-01T23:59:59.000Z

92

9 - Thermoset insulation materials in appliances, buildings and other applications  

Science Journals Connector (OSTI)

Abstract: Thermoset foam products are widely used for many technical insulation applications. They offer superior thermal insulation, a very favorable strength-to-weight ratio, and durability in a broad range of service conditions. Furthermore, fabrication technology is eased by the processing of a liquid reaction mixture and the auto-adhesive bond of reacting foam to most common substrates and facings materials. Polyurethane rigid foam is the material of choice for the whole cold-chain insulation industry, from food-processing, storage and transportation, to retailers and fridges at home. Polyurethane products are also largely used for the thermal insulations of buildings and for heat-management in pipelines and hot-water tanks. Phenolic foams find applications in some specific segments, thanks to their excellent fire and smoke behavior characteristics.

A. Fangareggi; L. Bertucelli

2012-01-01T23:59:59.000Z

93

Building America Case Study: Initial and Long-Term Movement of Cladding Installed Over Exterior Rigid Insulation (Fact Sheet)  

SciTech Connect (OSTI)

Changes in the International Energy Conservation Code (IECC) from 2009 to 2012 have resulted in the use of exterior rigid insulation becoming part of the prescriptive code requirements. With more jurisdictions adopting the 2012 IECC builders are going to finding themselves required to incorporate exterior insulation in the construction of their exterior wall assemblies. For thick layers of exterior insulation (levels greater than 1.5 inches), the use wood furring strips attached through the insulation back to the structure has been used by many contractors and designers as a means to provide a convenient cladding attachment location. However, there has been a significant resistance to its widespread implementation due to a lack of research and understanding of the mechanisms involved and potential creep effects of the assembly under the sustained dead load of a cladding. This research was an extension on previous research conducted by BSC in 2011, and 2012. Each year the understanding of the system discrete load component interactions, as well as impacts of environmental loading has increased. The focus of the research was to examine more closely the impacts of screw fastener bending on the total system capacity, effects of thermal expansion and contraction of materials on the compressive forces in the assembly, as well as to analyze a full years worth of cladding movement data from assemblies constructed in an exposed outdoor environment.

Not Available

2014-10-01T23:59:59.000Z

94

High Temperature Structural Foam  

Science Journals Connector (OSTI)

The Aerospace Industry is experiencing growing demand for high performance polymer foam. The X-33 program needs structural foam insulation capable of retaining its strength over a wide range of environmental conditions. The High Speed Research Program ...

Weiser Erik S.; Baillif Faye F.; Grimsley Brian W.; Marchello Joseph M.

1998-05-01T23:59:59.000Z

95

Immunologic studies of subjects with asthma exposed to formaldehyde and urea-formaldehyde foam insulation (UFFI) off products  

Science Journals Connector (OSTI)

There has been concern in recent years as to the health hazards of exposure to potentially carcinogenic or immunotoxic substances in the environment. This study was done to determine the effects of exposure to urea-formaldehyde foam insulation (UFFI) off products on various hematologic and immunologic parameters in subjects with asthma: complete blood count and differential, erythrocyte sedimentation rate, lymphocyte subpopulations (E-rosetting, T3, T4, T8. B73.1, and Fc receptor positive lymphocytes and large granular lymphocytes), lymphocyte response to phytohemagglutinin and formalin-treated red blood cells (Form-RBC), serum antibody against the Thomsen-Friedenreich RBC antigen and against Form-RBC, and natural killer (NK), interferon (IFN)-boosted NK (IFN-NK), and antibody-dependent cell-mediated cytotoxicity. Four control subjects with asthma from conventionally insulated homes (control group) and 23 subjects with asthma from UFFI-insulated homes (home group) were exposed to placebo, formaldehyde, dust, and UFFI off gas at levels ordinarily found in UFFI-containing homes for four separate periods in an environmental chamber. Immunologic testing was carried out before the exposure series and 1 day after completion 7 days later as part of an investigation of respiratory and possible allergic effects of such exposure. Data from the UFFI-insulated home group were not significantly different from data of the normal conventionally insulated home control group for any of the variables studied, either before or after UFFI exposure. Paired t tests comparing data from each of the two groups before and after UFFI exposure demonstrated minimal, but statistically significant increases in percent eosinophils and T8 positive cells in the UFFI-insulated home group only. Although NK, relative NK, and IFN-NK were normal in all groups, IFN-NK assays by use of a low concentration of ?-interferon demonstrated a statistically significant decrease in NK response to IFN in both the control and UFFI-insulated home groups after UFFI exposure. These differences were not observed at optimum levels of IFN stimulation. These data indicate that long-term exposure to UFFI off products in the home apparently had no effect on the immunologic parameters studied. Short-term exposure resulted in minor immunologic changes in this subject population.

H.F. Pross; J.H. Day; R.H. Clark; R.E.M. Lees

1987-01-01T23:59:59.000Z

96

Excavationless Exterior Foundation Insulation Field Study  

SciTech Connect (OSTI)

Building science research supports installing exterior (soil side) foundation insulation as the optimal method to enhance the hygrothermal performance of new homes. With exterior foundation insulation, water management strategies are maximized while insulating the basement space and ensuring a more even temperature at the foundation wall. However, such an approach can be very costly and disruptive when applied to an existing home, requiring deep excavation around the entire house. The NorthernSTAR Building America Partnership team implemented an innovative, minimally invasive foundation insulation upgrade technique on an existing home. The approach consisted of using hydrovac excavation technology combined with a liquid insulating foam. The team was able to excavate a continuous 4" wide by 4' to 5' deep trench around the entire house, 128 linear feet, except for one small part under the stoop that was obstructed with concrete debris. The combination pressure washer and vacuum extraction technology also enabled the elimination of large trenches and soil stockpiles normally produced by backhoe excavation. The resulting trench was filled with liquid insulating foam, which also served as a water-control layer of the assembly. The insulation was brought above grade using a liquid foam/rigid foam hybrid system and terminated at the top of the rim joist. Cost savings over the traditional excavation process ranged from 23% to 50%. The excavationless process could result in even greater savings since replacement of building structures, exterior features, utility meters, and landscaping would be minimal or non-existent in an excavationless process.

Schirber, T.; Mosiman, G.; Ojczyk, C.

2014-10-01T23:59:59.000Z

97

Recycling Polyurethane Foam and its Use as Filler in Renovation Mortar with Thermal Insulating Effect  

Science Journals Connector (OSTI)

Once the building have dried, it is necessary to assess the state of the renovation mortar with thermal insulating effect as well as the backing wall. If the building is not affected by the degrading effects, it ...

V. Václavík; T. Dvorský; V. Dirner…

2013-01-01T23:59:59.000Z

98

Evaluation of kinetic parameters appropriate for modeling urethane foam insulation performance  

Science Journals Connector (OSTI)

Computer codes which model the pyrolysis of thermal insulators for in-depth temperature response are particularly sensitive to the kinetic parameters used in the code. The parameter values, which are evaluated...

I. Auerbach

99

Effect of Convection in Helium-Charged, Partial-Foam Insulations for Liquid Hydrogen Propellant Tanks  

Science Journals Connector (OSTI)

Liquid hydrogen, because of its low density and extremely low boiling point, requires very effective insulation during its storage and use as a fuel for space booster applications. For space booster. insulatio...

B. N. Taylor; F. E. Mack

1966-01-01T23:59:59.000Z

100

High-Performance Spray-Foam Insulation for Application on Saturn S-II Stage  

Science Journals Connector (OSTI)

Space boosters using liquid hydrogen as a propellant require insulation to minimize the heat leak into the liquid for ground and boost operations. Thus, during the early design phase of the Saturn S-II program...

F. E. Mack; M. E. Smith

1971-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "rigid foam insulation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

insulation  

Science Journals Connector (OSTI)

The material used to insulate an electrical conductor, i.e., to enable a point to maintain an insulated state. Note: Insulations consist of dielectric materials. Airspace may serve...See also ...

2001-01-01T23:59:59.000Z

102

A Review of Vacuum Degradation Research and the Experimental Outgassing Research of the Core Material- Pu foam on Vacuum Insulation Panels  

Science Journals Connector (OSTI)

Vacuum Insulation Panels(VIPs) have been regarded as a super thermal insulation material with a thermal resistance of about 5-8 times higher than that of equally thick conventional polyurethane boards. In this paper, the researches on factors influencing interior pressure in VIPs, including gas and water vapor permeation through the barrier and outgassing of the core materials, were reviewed respectively. Following this, aiming at the outgassing from open cell PU foam, the specific outgassing rate of the core material is tested not only at room temperature but also at low and high temperatures by an orifice known-conductance method.

C.G. Yang; Y.J. Li; X. Gao; L. Xu

2012-01-01T23:59:59.000Z

103

Application of Genetic Algorithms and Thermogravimetry to Determine the Kinetics of Polyurethane Foam in Smoldering Combustion  

E-Print Network [OSTI]

for modeling urethane foam insulation performance, Journalinsulation, upholstery, as well as sound and shock dampening materials. PU foam

Rein, Guillermo; Lautenberger, Chris; Fernandez-Pello, Carlos; Torero, Jose; Urban, David

2006-01-01T23:59:59.000Z

104

Insulation | Department of Energy  

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

Insulation Insulation Insulation May 30, 2012 - 9:14am Addthis Spray foam insulation fills the nooks and crannies in the walls of this energy-efficient Florida home. | Photo courtesy of FSEC/IBACOS. Spray foam insulation fills the nooks and crannies in the walls of this energy-efficient Florida home. | Photo courtesy of FSEC/IBACOS. Foam core structural insulated panels are built in a factory, shipped to the jobsite, and assembled. | Photo courtesy of Michael Baechler. Foam core structural insulated panels are built in a factory, shipped to the jobsite, and assembled. | Photo courtesy of Michael Baechler. Spray foam insulation fills the nooks and crannies in the walls of this energy-efficient Florida home. | Photo courtesy of FSEC/IBACOS. Foam core structural insulated panels are built in a factory, shipped to the jobsite, and assembled. | Photo courtesy of Michael Baechler.

105

Polypropylene Foam Gains in Appeal  

Science Journals Connector (OSTI)

Wire and cable manufacturers show interest in this product as an insulator for coaxial cable ... The initial market growth for polypropylene foam is as insulation for coaxial cable. ... Boston Insulated Wire & Cable Co. is presently the only commercial producer of foamed polypropylene coaxial cable. ...

1964-06-15T23:59:59.000Z

106

Insulation products promote thermal efficiency  

SciTech Connect (OSTI)

The judicious use of thermal insulation products in non-residential buildings can provide a number of advantages including increased energy efficiency, lower first costs (by avoiding overside HVAC systems), improved fire safety and better acoustics. Thermal insulation products are those products which retard the flow of heat energy. Materials include glass, plastics, and organic materials such as wood fibers, vermiculite and perlite. Forms range from the familiar batts and blankets of glass fibers to foamed plastic, rigid boards, losse fill and systems combining two or more products, such as polystyrene boards covered with insulating plaster. The R values of selected insulation materials with a cost/sq. ft. of each material at R 10 are given. Costs cover both the material and installation and may vary depending on local conditions.

Chalmers, R.

1985-04-01T23:59:59.000Z

107

The properties of foams and lattices  

Science Journals Connector (OSTI)

...management, for thermal insulation, filtration and...material with a foam-like structure...becomes important in foams of low density intended for thermal insulation, which have a conductivity...management, for thermal insulation, filtration and...material with a foam-like structure...

2006-01-01T23:59:59.000Z

108

Measuring the Impact of Experimental Parameters upon the Estimated Thermal Conductivity of Closed-Cell Foam Insulation Subjected to an Accelerated Aging Protocol ? Two Year Results  

SciTech Connect (OSTI)

The thermal conductivity of many closed-cell foam insulation products changes over time as production gases diffuse out of the cell matrix and atmospheric gases diffuse into the cells. Thin slicing has been shown to be an effective means of accelerating this process in such a way as to produce meaningful results. Efforts to produce a more prescriptive version of the ASTM C 1303 standard test method have led to a broad ruggedness test. This test includes the aging of full size insulation specimens for time periods up to five years for later comparison to the predicted results. Experimental parameters under investigation include: slice thickness, slice origin (at the surface or from the core of the slab), thin slice stack composition, product facings, original product thickness, product density, and product type. This paper will compare the results after two years of full-thickness aging.

Stovall, Therese K [ORNL] [ORNL

2009-01-01T23:59:59.000Z

109

Measuring the Impact of Experimental Parameters upon the Estimated Thermal Conductivity of Closed-Cell Foam Insulation Subjected to an Accelerated Aging Protocol  

SciTech Connect (OSTI)

The thermal conductivity of many closed-cell foam insulation products changes over time as production gases diffuse out of the cell matrix and atmospheric gases diffuse into the cells. Thin slicing has been shown to be an effective means of accelerating this process in such a way as to produce meaningful results. Recent efforts to produce a more prescriptive version of the ASTM standard test method have led to the initiation of a broad ruggedness test. This test includes the aging of full size insulation specimens for time periods up to five years for later comparison to the predicted results. Experimental parameters under investigation include: slice thickness, slice origin (at the surface or from the core of the slab), thin slice stack composition, product facings, original product thickness, product density, and product type. This paper will cover the structure of the ruggedness test and provide a glimpse of some early trends

Stovall, Therese K [ORNL] [ORNL; Bogdan, mary [Honeywell, Inc.] [Honeywell, Inc.

2008-01-01T23:59:59.000Z

110

Hydrolytic ageing of syntactic foams for thermal insulation in deep water: degradation mechanisms and water uptake model  

Science Journals Connector (OSTI)

This paper focuses on a novel syntactic foam formulation based on a model diepoxy-diamine matrix with a controlled architecture, discusses the factors governing the long-term performance of these materials and...

V. Sauvant-Moynot; N. Gimenez; H. Sautereau

2006-07-01T23:59:59.000Z

111

Structural graphitic carbon foams  

SciTech Connect (OSTI)

Graphitic carbon foams are a unique material form with very high structural and thermal properties at a light weight. A process has been developed to produce microcellular, open-celled graphitic foams. The process includes heating a mesophase pitch preform above the pitch melting temperature in a pressurized reactor. At the appropriate time, the pressure is released, the gas nucleates bubbles, and these bubbles grow forming the pitch into the foam structure. The resultant foamed pitch is then stabilized in an oxygen environment. At this point a rigid structure exists with some mechanical integrity. The foam is then carbonized to 800 C followed by a graphitization to 2700 C. The shear action from the growing bubbles aligns the graphitic planes along the foam struts to provide the ideal structure for good mechanical properties. Some of these properties have been characterized for some of the foam materials. It is known that variations of the blowing temperature, blowing pressure and saturation time result in foams of variously sized with mostly open pores; however, the mechanism of bubble nucleation is not known. Therefore foams were blown with various gases to begin to determine the nucleation method. These gases are comprised of a variety of molecular weights as well as a range of various solubility levels. By examining the resultant structures of the foam, differences were noted to develop an explanation of the foaming mechanism.

Kearns, K.M.; Anderson, H.J. [Air Force Lab., Wright-Patterson AFB, OH (United States). Materials and Mfg. Directorate

1998-12-31T23:59:59.000Z

112

Evaluation of the Transient Thermal Performance of a Graphite Foam/Phase Change Material Composite.  

E-Print Network [OSTI]

?? The thermal transient response of graphite foam infiltrated with paraffin wax as a thermal protection composite was investigated. Graphite foam is a rigid open-celled… (more)

Trammell, Michael Paul

2013-01-01T23:59:59.000Z

113

Development and Optimization of Polyurea Foam  

Science Journals Connector (OSTI)

This foam block could be sliced into panels, which presented attractive properties as an insulation material. Especially their flexibility, which is...

Dr H. S. Creyf

1980-01-01T23:59:59.000Z

114

Building America Case Study: Excavationless Exterior-Side Foundation Insulation for Existing Homes, Minneapolis, Minnesota (Fact Sheet)  

SciTech Connect (OSTI)

Building science research supports installing exterior (soil side) foundation insulation as the optimal method to enhance the hygrothermal performance of new homes. With exterior foundation insulation, water management strategies are maximized while insulating the basement space and ensuring a more even temperature at the foundation wall. However, such an approach can be very costly and disruptive when applied to an existing home, requiring deep excavation around the entire house. The NorthernSTAR Building America Partnership team implemented an innovative, minimally invasive foundation insulation upgrade technique on an existing home. The approach consisted of using hydrovac excavation technology combined with a liquid insulating foam. The team was able to excavate a continuous 4" wide by 4' to 5' deep trench around the entire house, 128 linear feet, except for one small part under the stoop that was obstructed with concrete debris. The combination pressure washer and vacuum extraction technology also enabled the elimination of large trenches and soil stockpiles normally produced by backhoe excavation. The resulting trench was filled with liquid insulating foam, which also served as a water-control layer of the assembly. The insulation was brought above grade using a liquid foam/rigid foam hybrid system and terminated at the top of the rim joist. Cost savings over the traditional excavation process ranged from 23% to 50%. The excavationless process could result in even greater savings since replacement of building structures, exterior features, utility meters, and landscaping would be minimal or non-existent in an excavationless process.

NorthernSTAR

2014-09-01T23:59:59.000Z

115

A procedure for analyzing energy and global warming impacts of foam insulation in U.S. commercial buildings  

SciTech Connect (OSTI)

The objective of this paper is to develop a procedure for evaluating the energy and global warming impacts of alternative insulation technologies for US commercial building applications. The analysis is focused on the sum of the direct contribution of greenhouse gas emissions from a system and the indirect contribution of the carbon dioxide emission resulting from the energy required to operate the system over its expected lifetime. In this paper, parametric analysis was used to calculate building related CO{sub 2} emission in two US locations. A retail mail building has been used as a model building for this analysis. For the analyzed building, minimal R-values of insulation are estimated using ASHRAE 90.1 requirements.

Kosny, J.; Yarbrough, D.W.; Desjarlais, A.O.

1998-11-01T23:59:59.000Z

116

Bioresistance of Foam-Glass Crystal Materials to Filamentous Fungi  

Science Journals Connector (OSTI)

Foam-glass crystal (FGC) materials used for heat insulation obtained by the technology described in [7...] were chosen for the present study. It is known that foam glass is environmentally harmless and safe for ....

O. V. Kaz’mina; M. A. Dushkina; M. V. Chubik

2014-01-01T23:59:59.000Z

117

LCA Case Studies of Starch-Based Foam  

Science Journals Connector (OSTI)

The LDPE block/WBF was delivered to the company specialising in foam conversion (Foam Engineers Ltd., UK). Here the ... cut and converted to the shaped pieces of insulation for the final manufacture of the coolbo...

Miao Guo

2012-01-01T23:59:59.000Z

118

Solar Decathlon Technology Spotlight: Structural Insulated Panels |  

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

Decathlon Technology Spotlight: Structural Insulated Panels Decathlon Technology Spotlight: Structural Insulated Panels Solar Decathlon Technology Spotlight: Structural Insulated Panels September 20, 2011 - 7:13am Addthis These structural insulated panels consist of foam insulation sandwiched between oriented strand boards. (Courtesy of Michael Bacchler) These structural insulated panels consist of foam insulation sandwiched between oriented strand boards. (Courtesy of Michael Bacchler) Alexis Powers EDITOR'S NOTE: Originally posted on the Solar Decathlon News Blog on September 19, 2011. Editor's Note: This post is one of a series of technology spotlights that introduces common technologies used in U.S. Department of Energy Solar Decathlon team houses. Structural insulated panels (SIPs) are prefabricated structural elements

119

Heat insulation layer of polymer composite material  

Science Journals Connector (OSTI)

A new heat insulation layer polymer composite material is developed, within whose composition there is foam polyurethane and basaltoplastic. Results are provided for...

G. P. Ponomareva; A. A. Artemenko; O. M. Sladkov…

2010-05-01T23:59:59.000Z

120

Building America Technology Solutions for New and Existing Homes: Application of Spray Foam Insulation Under Plywood and OSB Roof Sheathing (Fact Sheet)  

Broader source: Energy.gov [DOE]

This case study describes Building Science Corporation’s research into spray polyurethane foams in residential roofs, performing hygrothermal modeling of a range of rain water leakage scenarios and field evaluations of in-service residential roofs.

Note: This page contains sample records for the topic "rigid foam insulation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Aluminium foams for lighter vehicles  

Science Journals Connector (OSTI)

Metallic foams have become an attractive research field both from the scientific viewpoint and the prospect of industrial applications. Various methods for making such foams are available. Some techniques start from specially prepared molten metals with adjusted viscosities. Such melts can be foamed by injecting gases or by adding gas-releasing blowing agents which decompose in-situ, causing the formation of bubbles. A further way is to start from solid precursors containing a blowing agent. These can be prepared by mixing metal powders with a blowing agent, compacting the mix and then foaming the compact by melting. Alternatively, casting routes can be used to make such precursors. The unique properties of foams promise a variety of applications in vehicle design ranging from light-weight construction, impact energy absorption to various types of acoustic damping and thermal insulation. Four applications are discussed, including a lifting arm on a lorry, an automobile and a train crash box, and a motor bracket.

John Banhart

2005-01-01T23:59:59.000Z

122

Thermally insulated pipelines successfully move high-wax-content crude offshore Gabon  

SciTech Connect (OSTI)

Three thermally insulated pipelines have been installed at a water depth of 35 m (115 ft) in Shell Gabon's Lucina Marine field. The three lines consist of two 2-km (1.24-mile) long flowlines connecting drilling and production platforms and a 3.2 km (2 mile) long loading line connecting a production platform to a storage tanker permanently moored in the field. All three pipelines are of 10.75-in. OD with rigid polyurethane-foam insulation contained in a high-density polyethylene sleeve. The pipelines have been designed with an operating temperature of 90/degree/C. (194/degree/F.). Thermal insulation was chosen because of the Lucina crude's high wax cloud point of 55/degree/C. (131/degree/F.). Without insulation, cooling of the crude in subsea pipelines would have lead to rapid wax deposition. Details of the coating and insulation of the line and riser pipe are given. For the line pipe, a thermal-insulation system consisting of polyurethane foam (PUF) within a polyethylene (PE) sleeve pipe was chosen.

Hales, M.

1982-01-25T23:59:59.000Z

123

Periodic explosions by positive feedback in a rising foam column  

Science Journals Connector (OSTI)

...for a small outward heat flow from the foam to the containing wall. We also predict...explosions would be prevented by sufficient insulation between the foam and the surrounding wall. Such insulation could be provided by a thin film of high...

Clarence Zener; Jaime Noriega

1982-01-01T23:59:59.000Z

124

Heat and Sound Insulation Materials  

Science Journals Connector (OSTI)

Of the three heat transfer processes: heat conduction, convection and radiation, convectional heat transfer is reduced by fiber and foam insulation materials1, 2). Air circulation is prevented by compartmentalizi...

Dr. Andre Knop; Dr. Louis A. Pilato

1985-01-01T23:59:59.000Z

125

Microcellular foams via phase separation  

SciTech Connect (OSTI)

A study of wide variety of processes for making plastic foams shows that phase separation processes for polymers from solutions offers the most viable methods for obtaining rigid plastic foams which met the physical requirements for fusion target designs. Four general phase separation methods have been shown to give polymer foams with densities less than 0.1 g/cm/sup 3/ and cell sizes of 30..mu..m or less. These methods involve the utilization of non-solvent, chemical or thermal cooling processes to achieve a controlled phase separation wherein either two distinct phases are obtained where the polymer phase is a continuous phase or two bicontinuous phases are obtained where both the polymer and solvent are interpenetrating, continuous, labyrinthine phases. Subsequent removal of the solvent gives the final foam structure.

Young, A.T.

1985-01-01T23:59:59.000Z

126

Building America Technlogy Solutions for New and Existing Homes: Interior Foundation Insulation Upgrade – Madison Residence (Fact Sheet)  

Broader source: Energy.gov [DOE]

This basement insulation project included a dimple map conveying inbound moisture to a draintile, airtight spray polyurethane foam wall and floor insulation, and radiant floor heat installation.

127

Building America Technology Solutions for New and Existing Homes: Excavationless: Exterior-Side Foundation Insulation for Existing Homes (Fact Sheet)  

Broader source: Energy.gov [DOE]

This project describes an innovative, minimally invasive building foundation insulation upgrade technique on an existing home that uses hydrovac excavation technology combined with a liquid insulating foam.

128

Insulation Workers  

Science Journals Connector (OSTI)

Insulation workers apply insulation materials on objects and buildings for thermal insulation and/or waterproofing.

R. Riala

2012-01-01T23:59:59.000Z

129

Numerical Analysis and Design of Carbon-Foam-based Garment and Helmet for Firefighters.  

E-Print Network [OSTI]

??Carbon foam is known for its excellent insulation properties and is also regarded as an effective shock absorbing material. In the present work, a numerical… (more)

Mishra, Sarthak

2014-01-01T23:59:59.000Z

130

Feasibility of Achieving a Zero-Net-Energy, Zero-Net-Cost Homes  

E-Print Network [OSTI]

A 20 cm layer of rigid foam insulation (U=0.11 W/m²K) was with a 120 mm rigid?foam insulation board below the screed (sprayed?in Icyene® foam insulation R?18;  Windows: Dual 

Al-Beaini, S.

2010-01-01T23:59:59.000Z

131

Simulation of radiant cooling performance with evaporative cooling sources  

E-Print Network [OSTI]

continuous rigid EPS foam insulation. The roofing assemblybatt insulation between the studs, and continuous rigid foamfoam. This provides the baseline with the same thermal mass and insulation

Moore, Timothy

2008-01-01T23:59:59.000Z

132

Numerical simulation of VOC Emissions from Dry Materials , J.S. Zhang2  

E-Print Network [OSTI]

, subfloors), and insulation materials (fiberglass, rigid foam) emit a variety of volatile organic compounds

Chen, Qingyan "Yan"

133

Problems associated with the use of urea-formaldehyde foam for residential insulation. Part III. Residential studies in Colorado and Wisconsin  

SciTech Connect (OSTI)

Formaldehyde levels were measured in homes in problem and non-problem areas in Wisconsin and Colorado to elucidate the severity and the extent of formaldehyde emission under field conditions, help correlate laboratory findings with field observations, and investigate the cause and effect relationship between insulation stability and weather conditions of an area. Methods for selecting homes and sampling are described. Interviews were conducted with occupants of the homes and the data are tabulated. Results are summarized. Investigation forms are shown and weather information in Denver and Wisconsin is tabulated. (MCW)

Schutte, W.C.; Cole, R.S.; Frank, C.W.; Long, K.R.

1981-02-01T23:59:59.000Z

134

Environmental assessment of thermal insulation composite material  

Science Journals Connector (OSTI)

Of other thermal insulation materials, the foam glass has most similar mechanical properties (PE...2008) and use (structural details exposed to high compressive loads). Therefore, it is (to a certain extend) comp...

Karel Struhala; Zuzana Stránská; Jan P?n?ík…

2014-12-01T23:59:59.000Z

135

ENHANCEMENT OF STRUCTURAL FOAM MATERIALS BY INCORPORATION OF GASIFIER SLAG  

SciTech Connect (OSTI)

As advanced gasification technology is increasingly adopted as an energy source, disposal of the resulting slag will become a problem. We have shown that gasifier slag can be incorporated into foamed glass, which is currently being manufactured as an abrasive and as an insulating material. The slag we add to foamed glass does not simply act as filler, but improves the mechanical properties of the product. Incorporation of gasifier slag can make foamed glass stronger and more abrasion resistant.

Olin Perry Norton; Ronald A. Palmer; W. Gene Ramsey

2006-03-15T23:59:59.000Z

136

Void Detection in Foam with Knit Lines Using THz Pulse Interrogation H. T. Banks 1  

E-Print Network [OSTI]

Columbia. The detection of voids inside the Sprayed on Foam Insulation (SOFI) belonging to the ThermalVoid Detection in Foam with Knit Lines Using THz Pulse Interrogation H. T. Banks 1 and N. L. Gibson­8205 February 4, 2006 Abstract We model electromagnetic interrogation of a polyurethane foam using the TE mode

137

Chapter Three - Material Selection for Thermal Insulation  

Science Journals Connector (OSTI)

Abstract This chapter covers the minimum requirements and fundamental concepts relating to the composition, size, dimensions, physical properties, inspection, packaging, and marking of a wide range of thermal insulations for use on pipe and equipment surfaces such as mineral wool insulation, rigid and semi-rigid mineral fiber block and board thermal insulation, mineral blanket and blanket-type pipe insulation, calcium silicate preformed block and pipe section thermal insulation, cellular glass, baked cork, and rigid cellular polyurethane and polyisocyanurate and filler insulation. In addition, vapor barriers, joint sealants, adhesive materials, metallic jacketing, and accessory materials are reviewed. For satisfactory performance, properly installed protective vapor barriers have to be used in low-temperature applications to prevent movement of moisture through or around the insulation towards the colder surface.

Alireza Bahadori

2014-01-01T23:59:59.000Z

138

THERMAL CONDUCTIVITY OF POWDER INSULATIONS FOR CRYOGENIC STORAGE  

E-Print Network [OSTI]

THERMAL CONDUCTIVITY OF POWDER INSULATIONS FOR CRYOGENIC STORAGE VESSELS Y. S. Choi1 '3 , M. N), powder insulation, and foam insulation, are used in the cryogenic storage vessels. Among CP823, Advances in Cjyogenie Engineering: Transactions of the Cryogenic Engineering Conference - CEC, Vol. 51, edited by J. G

Chang, Ho-Myung

139

Insulation Workers  

Science Journals Connector (OSTI)

Insulation workers install or spray insulation on pipes, boilers, walls, roofs, floors, etc. to improve thermal insulation or waterproofing. Most thermal insulation is now composed of man-made mineral ... rock wo...

R. Riala

2000-01-01T23:59:59.000Z

140

Cryogenic Foam Insulations: Polyurethane and Polystyrene  

Science Journals Connector (OSTI)

Increased use of cryogenic temperatures in the recent past may be credited in large part to military and aerospace endeavors. However, the impending energy shortage, advanced surgical techniques, refrigeration of...

L. L. Sparks

1979-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "rigid foam insulation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Pitch based foam with particulate  

DOE Patents [OSTI]

A thermally conductive, pitch based foam composite having a particulate content. The particulate alters the mechanical characteristics of the foam without severely degrading the foam thermal conductivity. The composite is formed by mixing the particulate with pitch prior to foaming.

Klett, James W. (Knoxville, TN)

2001-01-01T23:59:59.000Z

142

Research on Buildings General Quality of Insulation, Especially with Respect to Developing and Improving Methods of Post Insulation  

Science Journals Connector (OSTI)

Urea formaldehyde foam for cavity walls insulation has been investigated due to thermal conductivity...3.... There is doubt about the number of companies and of products in Denmark, that are able to observe this ...

N. H. Bertelsen; G. C. Larsen; T. Nielsen; A. D. Olsen

1984-01-01T23:59:59.000Z

143

International Conference on Advanced Composite Materials in Bridges and Structures Confrence Internationale sur les matriaux composites d'avant-garde pour ponts et charpentes  

E-Print Network [OSTI]

flow strength of the CGRID/foam insulation material mechanism, including the type of rigid insulating foam, the spacing between rows of CFRP grids, and the thickness of the foam insulation. The unique concrete layers separated by a rigid foam insulating core to provide better thermal efficiency. In place

144

FOAM DENSITY SENSITIVITY STUDY FOR THE 9977 PACKAGE  

SciTech Connect (OSTI)

Two layers of insulation fill the volume of the 9977 package between the drum liner and the shell. One of these layers is composed of General Plastics FR-3716 polyurethane foam (also known as Last-A-Foam{reg_sign}), poured through fill holes in the drum bottom and foamed in place. There was concern that the density of the foam insulating layer may vary due to the manufacturing process and that variations in foam density would compromise the safety basis of the package. Thus, a structural finite element analysis was performed to investigate this concern. The investigation examined the effect of replacing the material properties for the FR-3716 polyurethane foam, which has a density equal to 16 lb{sub m}/ft{sup 3}, with material properties of similar foam with varying densities through finite element analysis of hypothetical accident conditions (HAC) pertaining to impact conditions. The results showed that the functional performance of the containment vessel (CV) was not compromised under the conditions investigated.

Gorczyca, J; Tsu-Te Wu, T

2008-05-02T23:59:59.000Z

145

Foam Processing of Textiles  

E-Print Network [OSTI]

limits line speed of finishing ranges, the use of foam has led to doubling of line speeds. Foam finishing has also led to reduction in the consumption of chemical agents per unit of fabric because foam finishing provides for more uniform distribution...

Bafford, R. A.; Namboodri, C. G.

1984-01-01T23:59:59.000Z

146

Mechanical Properties of a Metal Powder-Loaded Polyurethane Foam  

SciTech Connect (OSTI)

Quasi-static compression tests have been performed on polyurethane foam specimens. The modulus of the foam exhibited a power-law dependence with respect to density of the form: E* {proportional_to} {rho}*{sup n}, where n = 1.7. The modulus data is well described by a simple geometric model (attributed to the work of Gibson and Ashby) for closed-cell foam in which the stiffness of the foam is governed by the flexure of the cell struts and cell walls. The compressive strength of the foam is also found to follow a power-law behavior with respect to foam density. In this instance, Euler buckling is used to rationalize the density dependence. The modulus of the polyurethane foam was modified by addition of a gas atomized, spherical aluminum powder. Additions of 30 and 50 weight percent of the powder significantly increased the foam modulus. However, there were only slight increases in modulus with 5 and 10 weight percent additions of the metal powder. Strength was also slightly increased at high loading fractions of powder. This increase in modulus and strength could be predicted by combining the above geometric model with a well-known model describing the effect on modulus of a rigid dispersoid in a compliant matrix.

C. L. Neuschwanger; L. L. Whinnery; S. H. Goods

1999-04-01T23:59:59.000Z

147

A new approach to low-conductivity, environmentally acceptable thermal insulation. Final report  

SciTech Connect (OSTI)

The object of this work was to develop a low-conductivity, economical, environmentally benign insulation. Specific objectives were to develop the following: (1) a very low conductivity use as ``super insulation`` in refrigerators, and (2) a general-purpose insulation for buildings and other applications. The technical goals of this work were to minimize gas phase, solid phase, and radiative conductivity. The novel approach pursued to achieve low gas phase conductivity was to blow foam with a removable gas or vapor, encapsulate the foam panel in a pouch made with a barrier film, and introduce a very low conductivity gas as the insulating gas phase. For super insulation and general-purpose insulation, the gases of choice were xenon and krypton, respectively. To control cost, the gases were present at low pressure, and the insulating panel was encapsulated with an impermeable polymeric film. Solid-phase conductivity was minimized by using low-density, open-cell, polyurethane foam. For super insulation, radiative heat transfer was impeded by placing aluminized Mylar films between relatively transparent 70-mil foam slabs. For general-purpose insulation, it was projected to impede radiative heat transfer by achieving the same very small cell size with open-cell CO{sub 2}-blown foam as is now achieved with closed-cell CO{sub 2}-blown foam.

Buckley, B.; Day, J.; Ferrero-Heredia, M.; Shanklin, E.; Varadarajan, G.; Woodruff, L.

1996-02-01T23:59:59.000Z

148

nanoFOAM  

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

nanoFOAM nanoFOAM nanoFOAM Los Alamos National Laboratory's (LANL) nanoFOAM technique produces self-supporting, nanoporous metal foams. July 30, 2013 nanoFOAM In the upper left frame, the slanted U-shape with the bright spot is a resistively heated wire igniting a pellet pressed from one of our high-nitrogen transition-metal complexes. (The spot is a reflection from the window of the experimental chamber.) As the pellet rapidly burns, its volume dramatically increases as nitrogen gas released by the combustion creates nanoscopic pores in coalescing metal particles that are also released. Available for thumbnail of Feynman Center (505) 665-9090 Email nanoFOAM Applications: Nanofoams can improve the efficiencies of: Catalytic production of ammonia, sulfuric acid, fuels, plastics,

149

Building America Whole-House Solutions for New Homes: Exterior...  

Energy Savers [EERE]

Exterior Rigid Foam Insulation at the Edge of a Slab Foundation, Fresno, California Building America Whole-House Solutions for New Homes: Exterior Rigid Foam Insulation at the Edge...

150

Numerical modeling of the effect of heat and mass transfer in porous low-temperature heat insulation in composite material structures on the magnitude of stresses which develop  

Science Journals Connector (OSTI)

The stressed state of multilayer low-temperature heat insulation for a cryogenic fuel tank is considered. ... is taken of heat and mass transfer in foam plastic (the main heat insulation material) occurring at cr...

G. V. Kuznetsov; N. V. Rudzinskaya

151

Development of lifetime test procedure for powder evacuated panel insulation. CRADA final report  

SciTech Connect (OSTI)

This CRADA is between Appliance Research Consortium (ARC) of the Association of Home Appliance Manufacturers (AHAM) and the Lockheed Martin Energy Research Corp. A Powder Evacuated Panel (PEP) is a "super" thermal insulation, having a thermal resistivity (R) substantially above that of existing insulation without the environmental problems of some insulations such as Chlorofluorocarbon (CFC) blown foam.

Wilkes, K E; Graves, R S; Childs, K W

1996-03-01T23:59:59.000Z

152

Bionics in textiles: flexible and translucent thermal insulations for solar thermal applications  

Science Journals Connector (OSTI)

...simultaneously high thermal insulation characteristics. The principle...Development of a translucent thermal insulation (a) Polar bear and its fur...show a hollow structure with foam in the core (figure 2...at the same time an ideal insulation material. In combination...

2009-01-01T23:59:59.000Z

153

Image captions/credits on Page 2. INDEX/SATAL 2010  

E-Print Network [OSTI]

of rigid foam insulation or foamcore, approximately 3" x 3"; two for each student group q Ceramic tiles

154

Nanoclay Syntactic Foam Composites.  

E-Print Network [OSTI]

??Syntactic foams are composite materials in which the matrix phase is reinforced with hollow particles called microballoons. They possess low moisture absorption, low thermal conductivity… (more)

Peter, Sameer Leo

2008-01-01T23:59:59.000Z

155

Insulation Resistance  

Science Journals Connector (OSTI)

n...(1) The electrical resistance between two conductors or systems of conductors separated only by an insulating material. The resistance of a particular insulation may be measured by dividing the v...

Jan W. Gooch

2011-01-01T23:59:59.000Z

156

Insulation resistance  

Science Journals Connector (OSTI)

n....(1) The electrical resistance between two conductors or systems of conductors separated only by an insulating material. The resistance of a particular insulation may be measured by dividing the ...

2007-01-01T23:59:59.000Z

157

Pipeline system insulation: Thermal insulation and corrosion prevention. (Latest citations from the Rubber and Plastics Research Association database). Published Search  

SciTech Connect (OSTI)

The bibliography contains citations concerning thermal and corrosion insulation of pipeline systems used to transport liquids and gases. Topics include thermal aging of polyurethane used for foam heating pipes, extrusion film pipeline insulation materials and processes, flexible expanded nitrile rubber pipeline insulation with Class 1 fire rating, and underground fiberglass reinforced polyester insulated pipeline systems. Applications in solar heating systems; underground water, oil, and gas pipelines; interior hot and cold water lines under seawater; and chemical plant pipeline system insulation are included. (Contains 50-250 citations and includes a subject term index and title list.) (Copyright NERAC, Inc. 1995)

NONE

1995-11-01T23:59:59.000Z

158

Pipeline system insulation: Thermal insulation and corrosion prevention. (Latest citations from the Rubber and Plastics Research Association database). Published Search  

SciTech Connect (OSTI)

The bibliography contains citations concerning thermal and corrosion insulation of pipeline systems used to transport liquids and gases. Topics include thermal aging of polyurethane used for foam heating pipes, extrusion film pipeline insulation materials and processes, flexible expanded nitrile rubber pipeline insulation with Class 1 fire rating, and underground fiberglass reinforced polyester insulated pipeline systems. Applications in solar heating systems; underground water, oil, and gas pipelines; interior hot and cold water lines under seawater; and chemical plant pipeline system insulation are included. (Contains 250 citations and includes a subject term index and title list.)

NONE

1995-01-01T23:59:59.000Z

159

Pipeline system insulation: Thermal insulation and corrosion prevention. (Latest citations from the Rubber and Plastics Research Association database). Published Search  

SciTech Connect (OSTI)

The bibliography contains citations concerning thermal and corrosion insulation of pipeline systems used to transport liquids and gases. Topics include thermal aging of polyurethane used for foam heating pipes, extrusion film pipeline insulation materials and processes, flexible expanded nitrile rubber pipeline insulation with Class 1 fire rating, and underground fiberglass reinforced polyester insulated pipeline systems. Applications in solar heating systems; underground water, oil, and gas pipelines; interior hot and cold water lines under seawater; and chemical plant pipeline system insulation are included. (Contains 250 citations and includes a subject term index and title list.)

Not Available

1994-05-01T23:59:59.000Z

160

SUSTAINABLE, COMPOSITE, AND THERMALLY EFFICIENT PRECAST CONCRETE LOAD BEARING AND ARCHITECTURAL  

E-Print Network [OSTI]

as a grid and placed in composite action with rigid foam insulation, as the main shear transfer mechanism, and warehouses. Panels are constructed with two outer concrete layers separated by rigid foam insulating core were the type and thickness of the rigid foam insulation, the spacing between lines of grid, the effect

Note: This page contains sample records for the topic "rigid foam insulation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Recycling Foam Countercurrent Chromatography  

Science Journals Connector (OSTI)

A new sample injection method for foam countercurrent chromatography (CCC), named the “recycle injection system”, has been developed. ... In this recycling foam CCC system, the effluent from the liquid outlet is directly returned into the column through the sample feed line so that the sample solution is continuously recycled. ...

Hisao Oka; Masato Iwaya; Ken-ichi Harada; Makoto Suzuki; Yoichiro Ito

2000-02-26T23:59:59.000Z

162

CPI Concrete Plant International 2 | 2013 www.cpi-worldwide.com2 PRECAST CONCRETE ELEMENTS  

E-Print Network [OSTI]

of the insulating core. The grid passes through slits in the foam core, but does not create a thermal break due. With the insulation and CFRP grid in place, the inner wythe reinforcement is added above the rigid foam insulation with an inner and an outer wythe of concrete separated by a core of rigid foam insulation. Thermal efficiency

163

New production process for insulation blocks composed of EPS and lightweight concrete containing pumice aggregate  

Science Journals Connector (OSTI)

This study introduces a new production method for production of the insulation blocks made of pumice aggregate, lightweight concrete and expanded polystyrene foam (EPS). Products produced via this method ... × he...

Ali Sariisik; Gencay Sariisik

2012-09-01T23:59:59.000Z

164

Thermal Performance Characteristics of a Combined External Insulation System under Simulated Space Vehicle Operating Conditions  

Science Journals Connector (OSTI)

The main purpose of this investigation was to determine the long-term thermal performance characteristics, with liquid hydrogen, of an externally applied combined foam/multilayer insulation system under simulated...

F. J. Muller; P. L. Klevatt

1995-01-01T23:59:59.000Z

165

Steady-state and transient results on insulation materials  

SciTech Connect (OSTI)

The Unguarded Thin-Heater Apparatus (UTHA, ASTM C 1114) was used to determine the thermal conductivity (k), specific heat (C), and thermal diffusivity ({alpha}) of selected building materials from 24 to 50{degree}C. Steady-state and transient measurements yielded data on four types of material: gypsum wall board containing 0, 15, and 30 wt % wax; calcium silicate insulations with densities ({rho}) of 307, 444, and 605 kg/m{sup 3}; three wood products: southern yellow pine flooring (575 kg/m{sup 3}), Douglas fir plywood (501 kg/m{sup 3}), and white spruce flooring (452 kg/m{sup 3}); and two cellular plastic foams: extruded polystyrene (30 kg/m{sup 3}) blown with HCFC-142b and polyisocyanurate rigid board (30.2 kg/m{sup 3}) blown with CFC-11. The extruded polystyrene was measured several times after production (25 days, 45 days, 74 days, 131 days, and 227 days). The UTHA is an absolute technique that yields k with an uncertainty of less than {plus minus}2% as determined by modeling, by determinate error analyses, and by use of Standard Reference Materials SRM-1450b and SRM-1451. 37 refs., 5 figs., 10 tabs.

Graves, R.S.; Yarbrough, D.W.; McElroy, D.L.; Fine, H.A.

1991-01-01T23:59:59.000Z

166

Pipeline system insulation: thermal insulation and corrosion prevention. December 1985-February 1988 (citations from the rubber and plastics research association data base). Report for December 1985-February 1988  

SciTech Connect (OSTI)

This bibliography contains citations concerning thermal and corrosion insulating of pipeline systems used to transfer liquids and gases. Thermal aging of polyurethane foam for insulating heating pipes, extrusion-film pipeline-insulation materials and processes, flexible expanded nitrile-rubber pipeline insulation with class 1 fire rating, and underground fiberglass-reinforced polyester insulated-pipeline systems are among the topics discussed. Applications in solar-heating systems, underground water, oil, and gas, interior hot water and cold water lines under seawater, and chemical-plant pipeline-system insulation are included. (This updated bibliography contains 139 citations, all of which are new entries to the previous edition.)

Not Available

1988-03-01T23:59:59.000Z

167

Electrical insulation  

Science Journals Connector (OSTI)

n....Material with very low conductivity, which surrounds active electrical devices. Common electrical insulation chemicals are fluorine-containing polymers.

2007-01-01T23:59:59.000Z

168

Electrical Insulation  

Science Journals Connector (OSTI)

n...Material with very low conductivity which surrounds active electrical devices. Common electrical insulation chemicals are fluorine-containing polymers (Dissado LA...

Jan W. Gooch

2011-01-01T23:59:59.000Z

169

Foam encapsulated targets  

DOE Patents [OSTI]

Foam encapsulated laser-fusion targets wherein a quantity of thermonuclear fuel is embedded in low density, microcellular foam which serves as an electron conduction channel for symmetrical implosion of the fuel by illumination of the target by one or more laser beams. The fuel, such as DT, is contained within a hollow shell constructed of glass, for example, with the foam having a cell size of preferably no greater than 2 .mu.m, a density of 0.065 to 0.6.times.10.sup.3 kg/m.sup.3, and external diameter of less than 200 .mu.m.

Nuckolls, John H. (Livermore, CA); Thiessen, Albert R. (Livermore, CA); Dahlbacka, Glen H. (Livermore, CA)

1983-01-01T23:59:59.000Z

170

APFIS Dec 2013 Asia-Pacific Conference on FRP in Structures Melbourne -Australia  

E-Print Network [OSTI]

foam insulation, as the main shear transfer mechanism for precast concrete sandwich panels flow strength of the CGRID/foam insulation material mechanism, including the type of rigid insulating foam, the spacing between rows of CFRP grids, and the thickness of the foam insulation. A comprehensive

171

Foam drilling simulator  

E-Print Network [OSTI]

Although the use of compressible drilling fluids is experiencing growth, the flow behavior and stability properties of drilling foams are more complicated than those of conventional fluids. In contrast with conventional mud, the physical properties...

Paknejad, Amir Saman

2007-04-25T23:59:59.000Z

172

Magnetic insulation  

Science Journals Connector (OSTI)

... by Winterberg1, led me to look into the background of the idea of 'magnetic insulation'. The purpose of this letter is to point out that the scheme described in ... were presented earlier in a longer article2. In that article he suggested that 'magnetic insulation' might make possible a transformer for 109 V. A year later the same objections ...

JOHN P. BLEWETT

1974-06-28T23:59:59.000Z

173

Crustation insulation  

Science Journals Connector (OSTI)

... nervous systems by wrapping it in multilayered sheaths of a fatty material called myelin. This insulation allows electrical nerve impulses to be conveyed over long distances much more rapidly. Considering ...

Eleanor Lawrence

1999-04-15T23:59:59.000Z

174

insulation blocking  

Science Journals Connector (OSTI)

In a cable, such as a coaxial cable, a paired cable, a twisted pair, or a fiber optic cable, the ability of the outer covering, such as a jacket, sheath, or insulation, to withstand elevated temperatures without ...

2001-01-01T23:59:59.000Z

175

Surfactant monitoring by foam generation  

DOE Patents [OSTI]

A device for monitoring the presence or absence of active surfactant or other surface active agents in a solution or flowing stream based on the formation of foam or bubbles is presented. The device detects the formation of foam with a light beam or conductivity measurement. The height or density of the foam can be correlated to the concentration of the active surfactant present.

Mullen, Ken I. (Los Alamos, NM)

1997-01-01T23:59:59.000Z

176

Measure Guideline: Three High Performance Mineral Fiber Insulation Board Retrofit Solutions  

SciTech Connect (OSTI)

This Measure Guideline describes a high performance enclosure retrofit package that uses mineral fiber insulation board. The Measure Guideline describes retrofit assembly and details for wood frame roof and walls and for cast concrete foundations. This Measure Guideline is intended to serve contractors and designers seeking guidance for non-foam exterior insulation retrofit.

Neuhauser, K.

2015-01-01T23:59:59.000Z

177

Building America Technlogy Solutions for New and Existing Homes: Interior Foundation Insulation Upgrade- Minneapolis Residence (Fact Sheet)  

Broader source: Energy.gov [DOE]

This interior foundation project employed several techniques to improve performance and mitigate moisture issues: dimple mat; spray polyurethane foam insulation; moisture and thermal management systems for the floor; and paperless gypsum board and steel framing.

178

Foams in porous media  

SciTech Connect (OSTI)

In 1978 a literature search on selective blocking of fluid flow in porous media was done by Professor S.S. Marsden and two of his graduate students, Tom Elson and Kern Huppy. This was presented as SUPRI Report No. TR-3 entitled ''Literature Preview of the Selected Blockage of Fluids in Thermal Recovery Projects.'' Since then a lot of research on foam in porous media has been done on the SUPRI project and a great deal of new information has appeared in the literature. Therefore we believed that a new, up-to-date search should be done on foam alone, one which would be helpful to our students and perhaps of interest to others. This is a chronological survey showing the development of foam flow, blockage and use in porous media, starting with laboratory studies and eventually getting into field tests and demonstrations. It is arbitrarily divided into five-year time periods. 81 refs.

Marsden, S.S.

1986-07-01T23:59:59.000Z

179

Pipeline-system insulation: Thermal insulation and corrosion prevention. December 1985-September 1989 (Citations from the Rubber and Plastics Research Association data base). Report for December 1985-September 1989  

SciTech Connect (OSTI)

This bibliography contains citations concerning thermal and corrosion insulating of pipeline systems utilized to transfer liquids and gases. Thermal aging of polyurethane foam for insulating heating pipes, extrusion-film pipeline insulation materials and processes, flexible expanded nitrile-rubber pipeline insulation with class 1 fire rating, and underground fiberglass-reinforced polyester-insulated pipeline systems are among the topics discussed. Applications in solar heating systems, underground water, oil, and gas, interior hot water and cold water lines under seawater, and chemical plant pipeline system insulation are included. (This updated bibliography contains 231 citations, 92 of which are new entries to the previous edition.)

Not Available

1989-10-01T23:59:59.000Z

180

Pipeline-system insulation: thermal insulation and corrosion prevention. January 1976-November 1985 (Citations from the Rubber and Plastics Research Association data base). Report for January 1976-November 1985  

SciTech Connect (OSTI)

This bibliography contains citations concerning thermal and corrosion insulating of pipeline systems used to transfer liquids and gases. Thermal aging of polyurethane foam for insulating heating pipes, extrusion-film pipeline-insulation materials and processes, flexible expanded nitrile-rubber pipeline insulation with class 1 fire rating, and underground fiberglass-reinforced polyester insulated-pipeline systems are among the topics discussed. Applications in solar-heating systems, underground water, oil, and gas, interior hot-water and cold-water lines under seawater, and chemical-plant pipeline-system insulation are included. (This updated bibliography contains 266 citations, none of which are new entries to the previous edition.)

Not Available

1988-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "rigid foam insulation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Insulation | Department of Energy  

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

Insulation Insulation Insulation Where to Insulate Learn where to insulate in a home to save money and improve comfort. Read more Insulation Get the facts about how insulation works. Read more Estimate the Payback Period for Insulation Adding insulation to your home will likely have an attractive payback. Read more You can reduce your home's heating and cooling costs through proper insulation and air sealing techniques. These techniques will also make your home more comfortable. Any air sealing efforts will complement your insulation efforts, and vice versa. Proper moisture control and ventilation strategies will improve the effectiveness of air sealing and insulation, and vice versa. Featured Insulation for New Home Construction Planning carefully for insulation results in reduced utility bills and superior comfort during the life of the home. In this house, raised heel trusses accommodate R-60 insulation. | Credit: Paul Norton, NREL.

182

Experimental evidence of foam homogenization  

SciTech Connect (OSTI)

The propagation of an ionization wave through a subcritical foam is studied under inertial confinement fusion conditions. Independent measurements of the ionization wave velocity are compared with hydrodynamic simulations and analytical models. It is shown that simulations of a homogeneous material at equivalent density strongly overestimate the front velocity. The internal foam structure can be accounted for with a simple model of foam homogenization that allows improving agreement between experiment and calculations.

Nicolaie, Ph.; Olazabal-Loume, M.; Tikhonchuk, V. [Univ. Bordeaux-CNRS-CEA, CELIA F-33405 Talence cedex (France); Fujioka, S.; Sunahara, A. [Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita Osaka 565-0871 (Japan); Borisenko, N.; Gus'kov, S.; Orekov, A. [P. N. Lebedev Physical Institute, RAS Leninskii Prospect 53, Moscow 119991 (Russian Federation); Grech, M. [Max-Planck-Institute for the Physics of Complex Systems, D-01187 Dresden (Germany); Riazuelo, G. [CEA, DAM, DIF, F-91297 Arpajon (France); Labaune, C. [Laboratoire pour l'Utilisation des Lasers Intenses, Ecole Polytechnique, Palaiseau (France); Velechowski, J. [Czech Technical University in Prague, Technicka 2, 166 27 Prague 6 (Czech Republic); Univ. Bordeaux-CNRS-CEA, CELIA F-33405 Talence cedex (France)

2012-11-15T23:59:59.000Z

183

Thermal Effects of Moisture in Rigid Insulation Board  

E-Print Network [OSTI]

.... ~ .-------. PHOENIX ~ .---. 27 26 26 ~.............. ---=: ~ 2. ~ -------..; ~ 2 ----. 22 0.4 0.6 0.6 0,7 0.8 THERMAL RESISTANCE RATIO FIGURE 10: PEAK AUGUST COOLING LOADS 0.8 ~ ~ 7 .- E-::::::. r--::::: 3 -I---- ~MITHI AUSTIN ~ENIX ~ 0...th Conference on Roofing Technology. National Roofing Contr

Crow, G. W.

184

A review of vacuum insulation research and development in the Building Materials Group of the Oak Ridge National Laboratory  

SciTech Connect (OSTI)

This report is a summary of the development work on flat-vacuum insulation performed by the Building Materials Group (BMG) in the Metals and Ceramics Division of the Oak Ridge National Laboratory (ORNL) during the last two years. A historical review of the technology of vacuum insulation is presented, and the role that ORNL played in this development is documented. The ORNL work in vacuum insulation has been concentrated in Powder-filled Evacuated Panels (PEPs) that have a thermal resistivity over 2.5 times that of insulating foams and seven times that of many batt-type insulations, such as fiberglass. Experimental results of substituting PEPs for chlorofluorocarbon (CFC) foal insulation in Igloo Corporation ice coolers are summarized. This work demonstrated that one-dimensional (1D) heat flow models overestimated the increase in thermal insulation of a foam/PEP-composite insulation, but three-dimensional (3D) models provided by a finite-difference, heat-transfer code (HEATING-7) accurately predicted the resistance of the composites. Edges and corners of the ice coolers were shown to cause the errors in the 1D models as well as shunting of the heat through the foam and around the PEPs. The area of coverage of a PEP in a foam/PEP composite is established as an important parameter in maximizing the resistance of such composites. 50 refs., 27 figs,. 22 tabs.

Kollie, T.G.; McElroy, D.L.; Fine, H.A.; Childs, K.W.; Graves, R.S.; Weaver, F.J.

1991-09-01T23:59:59.000Z

185

New types of light-weight refractory and heat-insulation materials for long-term use at extremely high temperatures  

Science Journals Connector (OSTI)

The particulars of a technology for new types of refractory and heat-insulation materials with high porosity, which are obtained ... cellular structure of the polymer base (polyurethane foam) and using pore-formi...

V. S. Vladimirov; E. S. Lukin; N. A. Popova; M. A. Ilyukhin…

2011-07-01T23:59:59.000Z

186

High temperature lightweight foamed cements  

DOE Patents [OSTI]

Cement slurries are disclosed which are suitable for use in geothermal wells since they can withstand high temperatures and high pressures. The formulation consists of cement, silica flour, water, a retarder, a foaming agent, a foam stabilizer, and a reinforcing agent. A process for producing these cements is also disclosed. 3 figs.

Sugama, Toshifumi.

1989-10-03T23:59:59.000Z

187

Rigidity theory for matroids  

E-Print Network [OSTI]

the (squared) edge lengths Q(pu pv), for fu;vg2E, where Q(x) = Pdi=1x2i ? (II.) What is the dimension of the space of in nitesimal motions p that preserve all the edge directions pu pv regarded as slopes, that is, up to scaling? The answers... to these questions are known to be determined by certain linear dependence matroids repre- sented over transcendental extensions of R, as we now explain. First, the d-dimensional rigidity matroid Rd(G) is the matroid represented by the vectors (2) f(eu ev) (pu pv...

Develin, Mike; Martin, Jeremy L.; Reiner, Victor

2007-01-01T23:59:59.000Z

188

Validation of Laser Shearography Testing for Fixed Foam Insulation Bonds  

Science Journals Connector (OSTI)

Electronic Laser Shearography is a relatively new Nondestructive Evaluation (NDE) technique that is used with excitation methods to measure differential displacements and subsequent strains at the surface of a ma...

J. E. Engel; D. D. Burleigh

1990-01-01T23:59:59.000Z

189

Attenuation of Fluorocarbons Released from Foam Insulation in Landfills  

Science Journals Connector (OSTI)

Lyngby, Denmark, and Department of Civil and Environmental Engineering, Miyazaki University, 1-1 Gakuen Kibanadai Nishi, Miyazaki 889-2192, Japan ... The investigation was performed using organic household waste or refuse excavated from a landfill. ... A:? Organic waste collected from Danish households. ...

Charlotte Scheutz; Yutaka Dote; Anders M. Fredenslund; Hans Mosbæk; Peter Kjeldsen

2007-10-20T23:59:59.000Z

190

A Study of the Energy-Saving Potential of Metal Roofs Incorporating Dynamic Insulation Systems  

SciTech Connect (OSTI)

This article presents various metal roof configurations that were tested at Oak Ridge National Laboratory in Tennessee, U.S. between 2009 and 2013, and describes their potential for reducing the attic-generated space-conditioning loads. These roofs contained different combinations of phase-change material, rigid insulation, low emittance surface, and above-sheathing ventilation with standing-seam metal panels on top. These roofs were designed to be installed on existing roofs decks, or on top of asphalt shingles for retrofit construction. All the tested roofs showed the potential for substantial energy savings compared to an asphalt shingle roof, which was used as a control for comparison. The roofs were constructed on a series of adjacent attics separated at the gables using thick foam insulation. The attics were built on top of a conditioned room. All attics were vented at the soffit and ridge. The test roofs and attics were instrumented with an array of thermocouples. Heat flux transducers were installed in the roof deck and attic floor (ceiling) to measure the heat flows through the roof and between the attic and conditioned space below. Temperature and heat flux data were collected during the heating, cooling and swing seasons over a three-year period. Data from previous years of testing have been published. Here, data from the latest roof configurations being tested in year three of the project are presented. All test roofs were highly effective in reducing the heat flows through the roof and ceiling, and in reducing the diurnal attic-temperature fluctuations.

Biswas, Kaushik [ORNL; Miller, William A [ORNL; Kriner, Scott [Metal Construction Association, Glenview, IL; Manlove, Gary [Metanna, Monument, CO

2013-01-01T23:59:59.000Z

191

Insulation Monitors Settings Selection  

Science Journals Connector (OSTI)

In the chapter general requirements set to insulation monitors selection in AC and DC networks ... given. Examples of regulations requirements for circuits insulation equivalent resistance are presented. Traditio...

Piotr Olszowiec

2013-01-01T23:59:59.000Z

192

Insulation Resistance Measurement Methods  

Science Journals Connector (OSTI)

A traditional method of insulation resistance measurement in live DC networks is ... of an ammeter is described. Formulas for insulation equivalent resistance calculation are derived with help...

Piotr Olszowiec

2013-01-01T23:59:59.000Z

193

Method of casting pitch based foam  

DOE Patents [OSTI]

A process for producing molded pitch based foam is disclosed which minimizes cracking. The process includes forming a viscous pitch foam in a container, and then transferring the viscous pitch foam from the container into a mold. The viscous pitch foam in the mold is hardened to provide a carbon foam having a relatively uniform distribution of pore sizes and a highly aligned graphic structure in the struts.

Klett, James W. (Knoxville, TN)

2002-01-01T23:59:59.000Z

194

Insulation Fact Sheet  

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

DOE/CE-0180 DOE/CE-0180 2008 Department of Energy Assistant Secretary Energy Efficiency and Renewable Energy Contents: Introduction Why Insulate Your House? How Insulation Works Which Kind of Insulation is Best? What Is an R-Value? Reading the Label Insulation Product Types Insulating a New House Where and How Much Air Sealing Moisture Control and Ventilation Installation Issues Precautions Attics Walls Design Options Crawlspaces and Slabs Advanced Wall Framing Metal Framing Insulating Concrete Forms Massive Walls Structural Insulated Panels External Insulation Finish System Attic Ventilation or a Cathedralized Attic Adding Insulation to an Existing House Where and How Much How Much Insulation Do I Already Have? Air Sealing Moisture Control and Ventilation Insulation Installation, the Retrofit Challenge

195

Energy-Saving Melting and Revert Reduction Technology (E-SMARRT): Lost Foam Thin Wall - Feasibility of Producing Lost Foam Castings in Aluminum and Magnesium Based Alloys  

SciTech Connect (OSTI)

With the increased emphasis on vehicle weight reduction, production of near-net shape components by lost foam casting will make significant inroad into the next-generation of engineering component designs. The lost foam casting process is a cost effective method for producing complex castings using an expandable polystyrene pattern and un-bonded sand. The use of un-bonded molding media in the lost foam process will impose less constraint on the solidifying casting, making hot tearing less prevalent. This is especially true in Al-Mg and Al-Cu alloy systems that are prone to hot tearing when poured in rigid molds partially due to their long freezing range. Some of the unique advantages of using the lost foam casting process are closer dimensional tolerance, higher casting yield, and the elimination of sand cores and binders. Most of the aluminum alloys poured using the lost foam process are based on the Al-Si system. Very limited research work has been performed with Al-Mg and Al-Cu type alloys. With the increased emphasis on vehicle weight reduction, and given the high-strength-to-weight-ratio of magnesium, significant weight savings can be achieved by casting thin-wall (? 3 mm) engineering components from both aluminum- and magnesium-base alloys.

Fasoyinu, Yemi [CanmetMATERIALS] [CanmetMATERIALS; Griffin, John A. [University of Alabama - Birmingham] [University of Alabama - Birmingham

2014-03-31T23:59:59.000Z

196

Explosively driven low-density foams and powders  

DOE Patents [OSTI]

Hollow RX-08HD cylindrical charges were loaded with boron and PTFE, in the form of low-bulk density powders or powders dispersed in a rigid foam matrix. Each charge was initiated by a Comp B booster at one end, producing a detonation wave propagating down the length of the cylinder, crushing the foam or bulk powder and collapsing the void spaces. The PdV work done in crushing the material heated it to high temperatures, expelling it in a high velocity fluid jet. In the case of boron particles supported in foam, framing camera photos, temperature measurements, and aluminum witness plates suggest that the boron was completely vaporized by the crush wave and that the boron vapor turbulently mixed with and burned in the surrounding air. In the case of PTFE powder, X-ray photoelectron spectroscopy of residues recovered from fragments of a granite target slab suggest that heating was sufficient to dissociate the PTFE to carbon vapor and molecular fluorine which reacted with the quartz and aluminum silicates in the granite to form aluminum oxide and mineral fluoride compounds.

Viecelli, James A. (Orinda, CA); Wood, Lowell L. (Simi Valley, CA); Ishikawa, Muriel Y. (Livermore, CA); Nuckolls, John H. (Danville, CA); Pagoria, Phillip F. (Livermore, CA)

2010-05-04T23:59:59.000Z

197

Multiple density layered insulator  

DOE Patents [OSTI]

A multiple density layered insulator for use with a laser is disclosed wh provides at least two different insulation materials for a laser discharge tube, where the two insulation materials have different thermoconductivities. The multiple layer insulation materials provide for improved thermoconductivity capability for improved laser operation.

Alger, Terry W. (Tracy, CA)

1994-01-01T23:59:59.000Z

198

Calcium silicate insulation structure  

DOE Patents [OSTI]

An insulative structure including a powder-filled evacuated casing utilizes a quantity of finely divided synthetic calcium silicate having a relatively high surface area. The resultant structure-provides superior thermal insulating characteristics over a broad temperature range and is particularly well-suited as a panel for a refrigerator or freezer or the insulative barrier for a cooler or a insulated bottle.

Kollie, Thomas G. (Oak Ridge, TN); Lauf, Robert J. (Oak Ridge, TN)

1995-01-01T23:59:59.000Z

199

Process for making carbon foam  

DOE Patents [OSTI]

The process obviates the need for conventional oxidative stabilization. The process employs mesophase or isotropic pitch and a simplified process using a single mold. The foam has a relatively uniform distribution of pore sizes and a highly aligned graphic structure in the struts. The foam material can be made into a composite which is useful in high temperature sandwich panels for both thermal and structural applications.

Klett, James W. (Knoxville, TN)

2000-01-01T23:59:59.000Z

200

Foam shell project: Progress report  

SciTech Connect (OSTI)

The authors report on their work to produce a foam shell target for two possible applications: (1) as liquid-layered cryogenic target on Omega Upgrade, and (2) as a back-up design for the NIF. This target consists of a roughly 1 mm diameter and 100 {mu}m thick spherical low-density foam shell surrounding a central void. The foam will be slightly overfilled with liquid D{sub 2} or DT, the overfilled excess being symmetrically distributed on the inside of the shell and supported by thermal gradient techniques. The outside of the foam is overcoated with full density polymer which must be topologically smooth. The technology for manufacturing this style of foam shell involves microencapsulation techniques and has been developed by the Japanese at ILE. Their goal is to determine whether this technology can be successfully adapted to meet US ICF objectives. To this end a program of foam shell development has been initiated at LLNL in collaboration with both the General Atomics DOE Target Fabrication Contract Corporation and the Target Fabrication Group at LLE.

Overturf, G.; Reibold, B.; Cook, B. [Lawrence Livermore National Lab., CA (United States); Schroen-Carey, D. [WJSA (United States)

1994-03-25T23:59:59.000Z

Note: This page contains sample records for the topic "rigid foam insulation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Metal-doped organic foam  

DOE Patents [OSTI]

Organic foams having a low density and very small cell size and method for producing same in either a metal-loaded or unloaded (nonmetal loaded) form are described. Metal-doped foams are produced by soaking a polymer gel in an aqueous solution of desired metal salt, soaking the gel successively in a solvent series of decreasing polarity to remove water from the gel and replace it with a solvent of lower polarity with each successive solvent in the series being miscible with the solvents on each side and being saturated with the desired metal salt, and removing the last of the solvents from the gel to produce the desired metal-doped foam having desired density cell size, and metal loading. The unloaded or metal-doped foams can be utilized in a variety of applications requiring low density, small cell size foam. For example, rubidium-doped foam made in accordance with the invention has utility in special applications, such as in x-ray lasers.

Rinde, James A. (Livermore, CA)

1982-01-01T23:59:59.000Z

202

SPRAY FOAM IN ACCESSIBLE SPACES:BEST PRACTICES AND CASE STUDIES FOR RETROFIT IN MIXED-HUMID CLIMATE  

SciTech Connect (OSTI)

Heating and cooling the house is one of the homeowners major expenses. Reducing these costs, saving energy, and creating a healthier, more comfortable indoor environment are good reasons to consider improving the building thermal envelope. Improvements usually consider increasing the amount of insulation, reducing the infiltration of outside air, and controlling moisture in existing buildings. This report describes the use of spray foam materials to insulate, seal, and control moisture. This discussion is limited to treating areas that are accessible. What is accessible, however, can vary depending on the type of renovation. If the building has been gutted or exterior surfaces removed, there are more options. This report will look at areas to consider for spray foam application and discuss the types of spray foams available and their uses. A number of case studies are presented to show the effectiveness of this retrofit in existing houses based on performance data.

Christian, Jeffrey E [ORNL] [ORNL; Gant, Kathy [Oak Ridge National Laboratory (ORNL)] [Oak Ridge National Laboratory (ORNL)

2013-12-01T23:59:59.000Z

203

Building America Whole-House Solutions for New Homes: Urbane...  

Energy Savers [EERE]

rigid foam insulated slabs and foundation walls, advanced framed walls, high-efficiency heat pumps, and ducts in conditioned space. Urbane Homes - Louisville, KY More Documents &...

204

Epoxy Foam Encapsulants: Processing and Dielectric Characterization  

SciTech Connect (OSTI)

The dielectric performance of epoxy foams was investigated to determine if such materials might provide advantages over more standard polyurethane foams in the encapsulation of electronic assemblies. Comparisons of the dielectric characteristics of epoxy and urethane encapsulant foams found no significant differences between the two resin types and no significant difference between as-molded and machined foams. This study specifically evaluated the formulation and processing of epoxy foams using simple methylhydrosiloxanes as the flowing agent and compared the dielectric performance of those to urethane foams of similar density.

Linda Domeier; Marion Hunter

1999-01-01T23:59:59.000Z

205

Biopolymer foams - Relationship between material characteristics and foaming behavior of cellulose based foams  

SciTech Connect (OSTI)

Biopolymers are becoming increasingly important to both industry and consumers. With regard to waste management, CO{sub 2} balance and the conservation of petrochemical resources, increasing efforts are being made to replace standard plastics with bio-based polymers. Nowadays biopolymers can be built for example of cellulose, lactic acid, starch, lignin or bio mass. The paper will present material properties of selected cellulose based polymers (cellulose propionate [CP], cellulose acetate butyrate [CAB]) and corresponding processing conditions for particle foams as well as characterization of produced parts. Special focus is given to the raw material properties by analyzing thermal behavior (differential scanning calorimetry), melt strength (Rheotens test) and molecular weight distribution (gel-permeation chromatography). These results will be correlated with the foaming behavior in a continuous extrusion process with physical blowing agents and underwater pelletizer. Process set-up regarding particle foam technology, including extrusion foaming and pre-foaming, will be shown. The characteristics of the resulting foam beads will be analyzed regarding part density, cell morphology and geometry. The molded parts will be tested on thermal conductivity as well as compression behavior (E-modulus, compression strength)

Rapp, F., E-mail: florian.rapp@ict.fraunhofer.de, E-mail: anja.schneider@ict.fraunhofer.de; Schneider, A., E-mail: florian.rapp@ict.fraunhofer.de, E-mail: anja.schneider@ict.fraunhofer.de [Fraunhofer Institute for Chemical Technology ICT (Germany); Elsner, P., E-mail: peter.elsner@ict.fraunhofer.de [Fraunhofer Institute for Chemical Technology ICT, Germany and Karlsruhe Institute of Technology KIT (Germany)

2014-05-15T23:59:59.000Z

206

Engineering the Quantum Foam  

E-Print Network [OSTI]

In 1990 Alcubierre, within the General Relativity model for space-time, proposed a scenario for `warp drive' faster than light travel, in which objects would achieve such speeds by actually being stationary within a bubble of space which itself was moving through space, the idea being that the speed of the bubble was not itself limited by the speed of light. However that scenario required exotic matter to stabilise the boundary of the bubble. Here that proposal is re-examined within the context of the new modelling of space in which space is a quantum system, viz a quantum foam, with on-going classicalisation. This model has lead to the resolution of a number of longstanding problems, including a dynamical explanation for the so-called `dark matter' effect. It has also given the first evidence of quantum gravity effects, as experimental data has shown that a new dimensionless constant characterising the self-interaction of space is the fine structure constant. The studies here begin the task of examining to what extent the new spatial self-interaction dynamics can play a role in stabilising the boundary without exotic matter, and whether the boundary stabilisation dynamics can be engineered; this would amount to quantum gravity engineering.

Reginald T. Cahill

2005-06-06T23:59:59.000Z

207

Assessment of Oxidation in Carbon Foam  

E-Print Network [OSTI]

Carbon foams exhibit numerous unique properties which are attractive for light weight applications such as aircraft and spacecraft as a tailorable material. Carbon foams, when exposed to air, oxidize at temperatures as low as 500-600 degrees Celsius...

Lee, Seung Min

2010-07-14T23:59:59.000Z

208

Interaction of "rigid" quantum systems  

E-Print Network [OSTI]

We introduce the notion of a "rigid" quantum system as a system with constant relative positions of its nuclei and constant relative distribution of the electrons with respect to the nuclei. In accordance with this definition, a molecule which does not interact with other objects, is a "rigid" quantum system. Molecule is also "rigid" if it interacts with other objects, but the interaction does not change the intrinsic structure of the molecule (or this change can be neglected). Several "rigid" quantum systems interact one with another in the quantum manner. The interaction is ruled by the Schr{\\"o}dinger equation [1] written for all the particles of the systems under consideration. We consider the case when the external potential is zero.

A. A. Kolpakov; A. G. Kolpakov

2013-01-03T23:59:59.000Z

209

Buildings Energy Data Book: 5.1 Building Materials/Insulation  

Buildings Energy Data Book [EERE]

(1) Insulation Type 1992 2001 2006 (1) Fiberglass 2,938 55% 3,760 54% 4,085 53% Foamed Plastic 1,223 23% 1,775 25% 1,955 26% Cellulose 485 9% 665 9% 730 10% Mineral Wool 402 8% 445...

210

Carbon foam characterization tensile evaluation of carbon foam ligaments  

E-Print Network [OSTI]

of Gibson and Ashby [5], [6]. The materials they studied were a high purity alumina with relative densities ranging from 0.09 to 0.25, an alumina-mullite (0.08-0.23) and an alumina-10% zirconia (0.08-0.19). They used scanning electron micrographs... of foam microstructure have been developed to model the foam mechanical behavior where the deformation of the bulk sample is predicted by the deformation of the unit cell. The model most widely used is that of Gibson and Ashby which is represented as a...

Verdugo Rodriguez, Rogelio Alberto

2004-09-30T23:59:59.000Z

211

Foam vessel for cryogenic fluid storage  

DOE Patents [OSTI]

Cryogenic storage and separator vessels made of polyolefin foams are disclosed, as are methods of storing and separating cryogenic fluids and fluid mixtures using these vessels. In one embodiment, the polyolefin foams may be cross-linked, closed-cell polyethylene foams with a density of from about 2 pounds per cubic foot to a density of about 4 pounds per cubic foot.

Spear, Jonathan D (San Francisco, CA)

2011-07-05T23:59:59.000Z

212

Highly concentrated foam formulation for blast mitigation  

DOE Patents [OSTI]

A highly concentrated foam formulation for blast suppression and dispersion mitigation for use in responding to a terrorism incident involving a radiological dispersion device. The foam formulation is more concentrated and more stable than the current blast suppression foam (AFC-380), which reduces the logistics burden on the user.

Tucker, Mark D. (Albuquerque, NM); Gao, Huizhen (Albuquerque, NM)

2010-12-14T23:59:59.000Z

213

Insulation Monitoring Systems  

Science Journals Connector (OSTI)

In this chapter there is presented general information on insulation deterioration signalization systems for AC IT networks. Few systems of continuous insulation supervision are described. The old concepts includ...

Piotr Olszowiec

2013-01-01T23:59:59.000Z

214

ASSISTANT PROFESSOR (SEMI-RIGID PLASTIC PACKAGING)  

E-Print Network [OSTI]

ASSISTANT PROFESSOR (SEMI-RIGID PLASTIC PACKAGING) IN FOOD, NUTRITION, & PACKAGING SCIENCES/rigid plastics packaging. The successful candidate will be responsible for teaching undergraduate and graduate in university teaching, experience in designing and implementing semi-rigid/rigid plastics research, a record

Stuart, Steven J.

215

Process for epoxy foam production  

DOE Patents [OSTI]

An epoxy resin mixture with at least one epoxy resin of between approximately 60 wt % and 90 wt %, a maleic anhydride of between approximately 1 wt % and approximately 30 wt %, and an imidazole catalyst of less than approximately 2 wt % where the resin mixture is formed from at least one epoxy resin with a 1-30 wt % maleic anhydride compound and an imidazole catalyst at a temperature sufficient to keep the maleic anhydride compound molten, the resin mixture reacting to form a foaming resin which can then be cured at a temperature greater than 50.degree. C. to form an epoxy foam.

Celina, Mathias C. (Albuquerque, NM)

2011-08-23T23:59:59.000Z

216

Gordon Research Conferences: Program for 1969  

Science Journals Connector (OSTI)

...Mechanics and properies of structural foams." 22 August. L. C. Rubens...diffusion in rigid closed-cell foams"; D. R. Otis, "Impact loading...submersible transducer includ-ing Teflon insulated cable: $97500 APPLICATIONS: Cell destruction...

Alexander M. Cruickshank

1969-03-07T23:59:59.000Z

217

Method of making a cyanate ester foam  

DOE Patents [OSTI]

A cyanate ester resin mixture with at least one cyanate ester resin, an isocyanate foaming resin, other co-curatives such as polyol or epoxy compounds, a surfactant, and a catalyst/water can react to form a foaming resin that can be cured at a temperature greater than 50.degree. C. to form a cyanate ester foam. The cyanate ester foam can be heated to a temperature greater than 400.degree. C. in a non-oxidative atmosphere to provide a carbonaceous char foam.

Celina, Mathias C.; Giron, Nicholas Henry

2014-08-05T23:59:59.000Z

218

Low density, microcellular foams, preparation, and articles  

DOE Patents [OSTI]

A microcellular low-density foam of poly(4-methyl-1-pentene) particularly useful for forming targets for inertial confinement fusion has been developed. Articles made from the foam have been machined to tolerances of 0.0001 inch, although the densities of the fragile foam are low (about 10 to about 100 mg/cc) and the cell sizes are small (about 10 to about 30 ..mu..m). Methods for forming the foam and articles are given. The yield strength of the foam of the invention is higher than was obtained in other structures of this same material.

Young, A.T.

1982-03-03T23:59:59.000Z

219

Compression of felt?type thermal insulation layer for underfloor heating system and floor impact sound  

Science Journals Connector (OSTI)

In Korea almost every house uses underfloor heating which has advantages of thermal comfort and energy efficiency. However when it is constructed for high?rise apartment houses it yields a problem in floor impact sound insulation. It accounts for the fact that a foam?type thermal insulator sandwiched between structural slab and heating floor functions as a spring and easily transmits impacts on the floor to the slab. In that case the system's transmissibility is determined by dynamic stiffness of the thermal insulation layer and the lower the dynamic stiffness is the more the floor impact is isolated. For that reason apartments construction companies are attempting to lower the dynamic stiffness of the thermal insulation layer for impact sound reduction. As part of the attempt felt?type materials with relatively low dynamic stiffness such as glass wool or polyester felt are considered as a substitution for the foam?type thermal insulator. However there is a possibility that compression of the felt?type materials would increase the dynamic stiffness and the impact sound insulation effect at early stage might be weakened in the long term. This paper investigates the correlation between gradual compression of the felt?type thermal insulation layer and the impact sound variation.

Tongjun Cho; Hyun?Min Kim

2008-01-01T23:59:59.000Z

220

SPUF - a simple polyurethane foam mass loss and response model.  

SciTech Connect (OSTI)

A Simple PolyUrethane Foam (SPUF) mass loss and response model has been developed to predict the behavior of unconfined, rigid, closed-cell, polyurethane foam-filled systems exposed to fire-like heat fluxes. The model, developed for the B61 and W80-0/1 fireset foam, is based on a simple two-step mass loss mechanism using distributed reaction rates. The initial reaction step assumes that the foam degrades into a primary gas and a reactive solid. The reactive solid subsequently degrades into a secondary gas. The SPUF decomposition model was implemented into the finite element (FE) heat conduction codes COYOTE [1] and CALORE [2], which support chemical kinetics and dynamic enclosure radiation using 'element death.' A discretization bias correction model was parameterized using elements with characteristic lengths ranging from 1-mm to 1-cm. Bias corrected solutions using the SPUF response model with large elements gave essentially the same results as grid independent solutions using 100-{micro}m elements. The SPUF discretization bias correction model can be used with 2D regular quadrilateral elements, 2D paved quadrilateral elements, 2D triangular elements, 3D regular hexahedral elements, 3D paved hexahedral elements, and 3D tetrahedron elements. Various effects to efficiently recalculate view factors were studied -- the element aspect ratio, the element death criterion, and a 'zombie' criterion. Most of the solutions using irregular, large elements were in agreement with the 100-{micro}m grid-independent solutions. The discretization bias correction model did not perform as well when the element aspect ratio exceeded 5:1 and the heated surface was on the shorter side of the element. For validation, SPUF predictions using various sizes and types of elements were compared to component-scale experiments of foam cylinders that were heated with lamps. The SPUF predictions of the decomposition front locations were compared to the front locations determined from real-time X-rays. SPUF predictions of the 19 radiant heat experiments were also compared to a more complex chemistry model (CPUF) predictions made with 1-mm elements. The SPUF predictions of the front locations were closer to the measured front locations than the CPUF predictions, reflecting the more accurate SPUF prediction of mass loss. Furthermore, the computational time for the SPUF predictions was an order of magnitude less than for the CPUF predictions.

Hobbs, Michael L.; Lemmon, Gordon H.

2003-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "rigid foam insulation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Test Report: Cost Effective Foundation Insulation  

SciTech Connect (OSTI)

A field experiment was conducted to demonstrate and quantify the thermal effectiveness of rigid insulation board when installed on the exterior of a buried concrete foundation wall. A heated, insulated box was constructed along one wall of an existing, unheated building to simulate the living space of a home. The crawl space beneath the living space was divided into two sections. One featured external foundation insulation, while the other side had none. 36 temperature and heat flux sensors were installed at predetermined locations to measure the temperature profile and heat flow out of the living space. The temperature profile through the foundation was then used to calculate the total heat flow out of the foundation for both cases. This experiment showed that a significant energy savings is available with exterior foundation insulation. Over the course of 3 months, the heat-loss differential between the insulated and non-insulated foundations was 4.95 kilowatt-hours per lineal foot of foundation wall, for a ratio of 3:1. For a 2200 sq. ft home with a foundation perimeter 200 ft. long, this would amount to a savings of 990 kW-hrs in just 3 months, or 330 kW-hrs per month. Extrapolating to an 8-month heating year, we would expect to save over 2640 kW-hrs per year for such a home. The savings for a basement foundation, rather than a crawlspace, would be approach twice that amount, nearing 5280 kW-hr per year. Because these data were not collected during the coldest months of the year, they are conservative, and greater savings may be expected during colder periods.

Jeffrey M. Lacy; T. E. Rahl; G. A. Twitchell; R. G. Kobbe

2003-06-01T23:59:59.000Z

222

Topological insulators/Isolants topologiques An introduction to topological insulators  

E-Print Network [OSTI]

Topological insulators/Isolants topologiques An introduction to topological insulators Introduction in the first Brillouin Zone, and their associated energies. In an insulator, an energy gap around the chemical topology, the insulator is called a topological insulator. We introduce this notion of topological order

Paris-Sud XI, Université de

223

Blast mitigation capabilities of aqueous foam.  

SciTech Connect (OSTI)

A series of tests involving detonation of high explosive blanketed by aqueous foam (conducted from 1982 to 1984) are described in primarily terms of recorded peak pressure, positive phase specific impulse, and time of arrival. The investigation showed that optimal blast mitigation occurs for foams with an expansion ratio of about 60:1. Simple analyses representing the foam as a shocked single phase mixture are presented and shown inadequate. The experimental data demonstrate that foam slows down and broadens the propagated pressure disturbance relative to a shock in air. Shaped charges and flyer plates were evaluated for operation in foam and appreciable degradation was observed for the flyer plates due to drag created by the foam.

Hartman, William Franklin; Larsen, Marvin Elwood; Boughton, Bruce A.

2006-02-01T23:59:59.000Z

224

A Simple Holographic Insulator  

E-Print Network [OSTI]

We present a simple holographic model of an insulator. Unlike most previous holographic insulators, the zero temperature infrared geometry is completely nonsingular. Both the low temperature DC conductivity and the optical conductivity at zero temperature satisfy power laws with the same exponent, given by the scaling dimension of an operator in the IR. Changing a parameter in the model converts it from an insulator to a conductor with a standard Drude peak.

Mefford, Eric

2014-01-01T23:59:59.000Z

225

A Simple Holographic Insulator  

E-Print Network [OSTI]

We present a simple holographic model of an insulator. Unlike most previous holographic insulators, the zero temperature infrared geometry is completely nonsingular. Both the low temperature DC conductivity and the optical conductivity at zero temperature satisfy power laws with the same exponent, given by the scaling dimension of an operator in the IR. Changing a parameter in the model converts it from an insulator to a conductor with a standard Drude peak.

Eric Mefford; Gary T. Horowitz

2014-06-16T23:59:59.000Z

226

NATIONAL AERONAUTICS AND SPACE ADMINISTRATION PETITIONFORSPACESHUTTLEPROGRAM  

E-Print Network [OSTI]

SHUTTLE TPS REQUIREMENTS I I Shuttle Use of Foam Insulation I4 ET Uses of HCFC I 4 I b Blown Foam I4 environments, prevent formation of ice on exterior surfaces, and maintain structural integrity The TPS is rigid foam using HCFC l l l b as the chemical blowing agent to provide the critical insulation and cell

Christian, Eric

227

Pitch-based carbon foam and composites  

DOE Patents [OSTI]

A process for producing carbon foam or a composite is disclosed which obviates the need for conventional oxidative stabilization. The process employs mesophase or isotropic pitch and a simplified process using a single mold. The foam has a relatively uniform distribution of pore sizes and a highly aligned graphic structure in the struts. The foam material can be made into a composite which is useful in high temperature sandwich panels for both thermal and structural applications.

Klett, James W. (Knoxville, TN)

2002-01-01T23:59:59.000Z

228

Pitch-based carbon foam and composites  

DOE Patents [OSTI]

A process for producing carbon foam or a composite is disclosed which obviates the need for conventional oxidative stabilization. The process employs mesophase or isotropic pitch and a simplified process using a single mold. The foam has a relatively uniform distribution of pore sizes and a highly aligned graphic structure in the struts. The foam material can be made into a composite which is useful in high temperature sandwich panels for both thermal and structural applications.

Klett, James W. (Knoxville, TN)

2001-01-01T23:59:59.000Z

229

Plastics and Insulation  

Science Journals Connector (OSTI)

... the Institution of Electrical Engineers on March 24 to discuss a paper on “Plastics and Insulation” by L. Hartshorn, N. J. L. Megson and E. Rushton. It ...

1938-04-02T23:59:59.000Z

230

Process for preparing silicon carbide foam  

DOE Patents [OSTI]

A method of preparing near net shape, monolithic, porous SiC foams is disclosed. Organosilicon precursors are used to produce polymeric gels by thermally induced phase separation, wherein, a sufficiently concentrated solution of an organosilicon polymer is cooled below its solidification temperature to form a gel. Following solvent removal from the gel, the polymer foam is pretreated in an oxygen plasma in order to raise its glass transition temperature. The pretreated foam is then pyrolyzed in an inert atmosphere to form a SiC foam. 9 figs.

Whinnery, L.L.; Nichols, M.C.; Wheeler, D.R.; Loy, D.A.

1997-09-16T23:59:59.000Z

231

Process for preparing silicon carbide foam  

DOE Patents [OSTI]

A method of preparing near net shape, monolithic, porous SiC foams is disclosed. Organosilicon precursors are used to produce polymeric gels by thermally induced phase separation, wherein, a sufficiently concentrated solution of an organosilicon polymer is cooled below its solidification temperature to form a gel. Following solvent removal from the gel, the polymer foam is pretreated in an oxygen plasma in order to raise its glass transition temperature. The pretreated foam is then pyrolized in an inert atmosphere to form a SiC foam.

Whinnery, LeRoy Louis (Livermore, CA); Nichols, Monte Carl (Livermore, CA); Wheeler, David Roger (Albuquerque, NM); Loy, Douglas Anson (Albuquerque, NM)

1997-01-01T23:59:59.000Z

232

Gas insulated transmission line with insulators having field controlling recesses  

DOE Patents [OSTI]

A gas insulated transmission line having a novel insulator for supporting an inner conductor concentrically within an outer sheath. The insulator has a recess contiguous with the periphery of one of the outer and inner conductors. The recess is disposed to a depth equal to an optimum gap for the dielectric insulating fluid used for the high voltage insulation or alternately disposed to a large depth so as to reduce the field at the critical conductor/insulator interface.

Cookson, Alan H. (Pittsburgh, PA); Pederson, Bjorn O. (Chelmsford, MA)

1984-01-01T23:59:59.000Z

233

Alloy Foam Diesel Emissions Control School Bus Implementation...  

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

Alloy Foam Diesel Emissions Control School Bus Implementation Alloy Foam Diesel Emissions Control School Bus Implementation Poster presentation from the 2007 Diesel...

234

Heat transfer in microsphere insulation  

Science Journals Connector (OSTI)

The results of an investigation of heat transfer in a new type of insulation (microsphere insulation) are presented. The effects of the ... gas pressure on the thermal conductivity of the insulation were investig...

R. Wawryk; J. Rafa?owicz

235

Investigation for the selection of foaming agents to produce steel foams  

SciTech Connect (OSTI)

During earlier investigators conducted at the Fraunhofer Institute for Applied Materials Research (IFAM), concentrating on the metal foaming technology using the powder metallurgy process, it was shown that some steel alloys are foamable with Fraunhofer`s patented powder technology approach. To further investigate the foamability of steel alloys, suitable foaming agents need to be identified and characterized. This article reports the finding of two metallic compounds used for steel foaming. The foaming behaviors of the selected foaming agents in the steel powder compacts are also evaluated in terms of different alloying elements.

Yu, C.J.; Eifert, H.H. [Fraunhofer Resource Center Delaware, Newark, DE (United States); Knuewer, M.; Weber, M.; Baumeister, J. [Fraunhofer Inst. for Applied Materials Research, Bremen (Germany)

1998-12-31T23:59:59.000Z

236

Elaboration And Characterization Of Foam Glass Based On Cullet With Addition Of Soluble Silicates  

SciTech Connect (OSTI)

The politics of the energy saving and of the acoustic comfort buildings is at the heart of the research of new compounds permitting to improve the materials performance actually commercialised. With this aim in view, we'll purpose to elaborate a porous material (foam glass) with addition of soluble silicates (up to 40%) of which the principal material is the waste glass in order to recycle it and improving the present laws about the waste products in closed circuit: (Finished products (leftarrow) waste products (leftarrow) finished products). The investigations have shown that grinding waste glass to particle size less than 0.1 mm and adding 1% of Ca CO{sub 3} content provide production of material with the following properties: particle density 0,5 g/cm{sup 3}, strength 17,50 MPa and water adsorption 95%, the temperature for foaming ranges were determined at 850 deg. C. The microstructures are homogenous, with pore sizes up to 2 mm. The addition of soluble silicates (up to 40%) has resulted in the foam glass of very high porosity. The foam glass is counted among the new glass products meeting certain requirements sought comfort in the building industry in particular (thermal and acoustic insulation). The product obtained present of excellent properties thermal ({lambda} = 0,031 W/m deg. C) and acoustic (R = 15 dB).

Ayadi, A.; Stiti, N.; Benhaoua, F.; Boumchedda, K.; Lerari, Y. [Laboratory of mineral materials and composite, Faculty of Engineering Sciences, University of Boumerdes (Algeria)

2011-01-17T23:59:59.000Z

237

Behaviour of Insulation  

Science Journals Connector (OSTI)

... to say in effect, even if I do inadvertently misquote. "The trouble with our insulation is that it is too thick". The lessons at any rate are clear: ... The book Dielectric Relaxation has certainly contributed greatly to our understanding of the behaviour of insulation for a specialist few.

COLIN ADAMSON

1968-12-07T23:59:59.000Z

238

Magnetic insulation (reply)  

Science Journals Connector (OSTI)

... DR WINTERBERG REPLIES: Contrary to Blewett's belief, magnetic insulation has not only been experimentally confirmed2 since I proposed it several years ago1, but ... generators (for example, the MJ Aurora machine). The magnetic field needed for the insulation effect in this case is generated by the strong azimuthal self-induced field of the ...

F. WINTERBERG

1974-06-28T23:59:59.000Z

239

Thermal Insulation of Houses  

Science Journals Connector (OSTI)

... THE Thermal Insulation (Dwellings) Bill which Mr. G. Nabarro introduced into the House of Commons on ... , sponsored by members of both major political parties, extends the principle of the Thermal Insulation (Industrial Buildings) Act of July 1957 to all new dwelling houses built in the ...

1958-02-22T23:59:59.000Z

240

Insulation of Electrical Equipment  

Science Journals Connector (OSTI)

... A VACATION 'school' on the insulation of electrical equipment was held in the Electrical Engineering Department of the Imperial College of ... the universities. The purpose of the course was to consider the factors which are limiting insulation design in the main classes of electrical equipment, and the general principles which should ...

1952-12-13T23:59:59.000Z

Note: This page contains sample records for the topic "rigid foam insulation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

INSULATION OF HEATING SYSTEMS  

Science Journals Connector (OSTI)

... C. PALLOT gave a Cantor Lecture to the Royal Society of Arts on “Thermal Insulation at Medium Temperature” on November 23 ; the lecture, which included many topics of ... many topics of current interest, has now been published1. In a bulletin on heat insulation issued by the Ministry of Fuel and Power, it was pointed out that "In ...

1943-05-22T23:59:59.000Z

242

Topological insulators and superconductors  

Science Journals Connector (OSTI)

Topological insulators are new states of quantum matter which cannot be adiabatically connected to conventional insulators and semiconductors. They are characterized by a full insulating gap in the bulk and gapless edge or surface states which are protected by time-reversal symmetry. These topological materials have been theoretically predicted and experimentally observed in a variety of systems, including HgTe quantum wells, BiSb alloys, and Bi2Te3 and Bi2Se3 crystals. Theoretical models, materials properties, and experimental results on two-dimensional and three-dimensional topological insulators are reviewed, and both the topological band theory and the topological field theory are discussed. Topological superconductors have a full pairing gap in the bulk and gapless surface states consisting of Majorana fermions. The theory of topological superconductors is reviewed, in close analogy to the theory of topological insulators.

Xiao-Liang Qi and Shou-Cheng Zhang

2011-10-14T23:59:59.000Z

243

Chapter 9 - Pipeline Insulation  

Science Journals Connector (OSTI)

Oilfield pipelines are insulated mainly to conserve heat. The need to keep the product in the pipeline at a temperature higher than the ambient could exist for the following reasons: preventing the formation of gas hydrates, preventing the formation of wax or asphaltenes, enhancing the product flow properties, increasing the cooldown time after shutting down, and meeting other operational/process equipment requirements. On the other hand, in liquefied gas pipelines, such as LNG, insulation is required to maintain the cold temperature of the gas to keep it in a liquid state. This chapter describes the commonly used insulation materials, insulation finish on pipes, and general requirements for insulation of offshore and deepwater pipelines.

Boyun Guo; Shanhong Song; Ali Ghalambor; Tian Ran Lin

2014-01-01T23:59:59.000Z

244

Thermal Insulation of Clothing (Icl)  

Science Journals Connector (OSTI)

The intrinsic insulation of a clothing assembly. The effective insulation of clothing is (Icl + Ia)...2 · W?1] and sometimes in [clo].

2012-01-01T23:59:59.000Z

245

Equipment Insulation | Open Energy Information  

Open Energy Info (EERE)

List of Equipment Insulation Incentives Retrieved from "http:en.openei.orgwindex.php?titleEquipmentInsulation&oldid267163" Category: Articles with outstanding TODO tasks...

246

Corrosiveness of wet residential building thermal insulation---Mechanisms and evaluation of electrochemical methods for assessing corrosion behavior  

SciTech Connect (OSTI)

An evaluation has been made of the corrosiveness of selected wet residential building thermal insulation materials in contact with low carbon steel. Investigations were conducted both in wet insulations and in filtered leachates from insulations derived from thirteen cellulosic, three mineral fiber and four foam products. Potentiodynamic polarization measurements are reported from which the overall corrosion response was assessed and then the techniques of Tafel and polarization resistance analysis applied to estimate corrosion rates. Corrosion rates were also estimated electrochemically using a direct reading instrument which performs the rate calculation based on the polarization resistance principle. Direct determinations of corrosion rate were based on weight loss measurements.

Stansbury, E.E. [Stansbury (E.E.), Knoxville, TN (United States)

1991-10-01T23:59:59.000Z

247

ALDEHYDE AND OTHER VOLATILE ORGANIC CHEMICAL EMISSIONS IN FOUR FEMA TEMPORARY HOUSING UNITS – FINAL REPORT  

E-Print Network [OSTI]

Urea Formaldehyde Foam Insulation (UFFI), Consumer Productdiisobutyrate Urea Formaldehyde Foam Insulation orexpandable foam insulation Volatile Organic Chemical TMPD-

Maddalena, Randy L.

2008-01-01T23:59:59.000Z

248

Method for extruding pitch based foam  

DOE Patents [OSTI]

A method and apparatus for extruding pitch based foam is disclosed. The method includes the steps of: forming a viscous pitch foam; passing the precursor through an extrusion tube; and subjecting the precursor in said extrusion tube to a temperature gradient which varies along the length of the extrusion tube to form an extruded carbon foam. The apparatus includes an extrusion tube having a passageway communicatively connected to a chamber in which a viscous pitch foam formed in the chamber paring through the extrusion tube, and a heating mechanism in thermal communication with the tube for heating the viscous pitch foam along the length of the tube in accordance with a predetermined temperature gradient.

Klett, James W. (Knoxville, TN)

2002-01-01T23:59:59.000Z

249

Cellular glass insulation keeps liquefied gas from vaporizing  

SciTech Connect (OSTI)

The North West Shelf Project, located on the Burrup Peninsula in Western Australia, supplies much of that vast state with natural gas for domestic and industrial applications. Some of the gas is also exported to Japan as liquefied natural gas (LNG). While awaiting shipment to Japan, the LNG is stored at {minus}322 F in four storage tanks, each with a capacity of 2.5 million ft{sup 3}. When Woodside Offshore Petroleum Pty Ltd., operator of the LNG facility, selected insulation material for the storage tanks, it went in search of a material with more than just insulating value. Since the insulation is installed inside the tanks, it must be able to resist wicking or absorbing the LNG. Also, it had to have sufficient strength to withstand the weight of the 2.5 million ft{sup 3} of LNG without being crushed or losing its insulting properties. And, as a safety precaution, the selected materials should neither burn nor support combustion. Ultimately, Woodside selected a cellular glass insulation called Foamglas, from Pittsburgh Corning Corp., that met all the performance criteria and was cost competitive with the lesser-performing alternatives. Foamglas is produced from strong, inert borosilicate glass. Its insulating capability is provided by the tiny, closed cells of air encapsulated within the foam-like structure of the glass. Since the cells are closed,neither liquid nor vapor can enter the structure of the insulation. The inert glass itself will not absorb or react with LNG, nor will it burn or support a fire. The cellular structure provides effective insulation in both not and cold applications, and offers a fire barrier.

NONE

1995-11-01T23:59:59.000Z

250

Use of GFRP Grid for Innovative Concrete Sandwich Panels Jonathan G. Soriano1  

E-Print Network [OSTI]

to affect the shear transfer, such as the type of rigid foam insulation, insulation thickness at the North Carolina State University focused on the behavior of insulated concrete sandwich wall panels of the grid/foam is shown in Figure 1. The program was designed to determine the characteristics of the shear

251

Augmented Foam Sculpting for Capturing 3D Models Michael R. Marner Bruce H. Thomas  

E-Print Network [OSTI]

Augmented Foam Sculpting for Capturing 3D Models Michael R. Marner Bruce H. Thomas University. A designer physically sculpts a 3D model from foam using a hand-held hot wire foam cut- ter. Both the foamD model from foam using a hand-held hot wire foam cutter. Both the foam and cutting tool are tracked

Thomas, Bruce

252

Insulation fact sheet  

SciTech Connect (OSTI)

Electricity bills, oil bills, gas bills - all homeowners pay for one or more of these utilities, and wish they paid less. Often many of us do not really know how to control or reduce our utility bills. We resign ourselves to high bills because we think that is the price we have to pay for a comfortable home. We encourage our children to turn off the lights and appliances, but may not recognize the benefits of insulating the attic. This publication provides facts relative to home insulation. It discusses where to insulate, what products to use, the decision making process, installation options, and sources of additional information.

NONE

1997-08-01T23:59:59.000Z

253

Moisture Durability of Vapor Permeable Insulating Sheathing (Fact Sheet), Building America Case Study: Technology Solutions for New and Existing Homes, Building Technologies Office (BTO)  

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

BUILDING TECHNOLOGIES OFFICE BUILDING TECHNOLOGIES OFFICE Building America Case Study Technology Solutions for New and Existing Homes Moisture Durability of Vapor Permeable Insulating Sheathing PROJECT INFORMATION Construction: Existing homes with vapor open wall assemblies Type: Residential Climate Zones: All PERFORMANCE DATA Insulation Ratio The R-value ratio of exterior to interior insulation (e.g., R-15 exterior insulation on R-11 cavity insulation has a ratio of 0.58). This variable controls sheathing temperature. Vapor Permeable Insulation An insulation with vapor permeance greater than five U.S. perms (e.g., rigid mineral fiber insulations). This variable controls water vapor flow and sheathing temperatures. Water Resisting Barrier A membrane that resists liquid water transfer. Permeable WRBs allow water

254

Plasma Magnetic Insulation  

Science Journals Connector (OSTI)

29 June 1987 research-article Plasma Magnetic Insulation B. B. Kadomtsev Theoretically the strong magnetic field of a tokamak should confine electrons and ions in a high-temperature...

1987-01-01T23:59:59.000Z

255

Cooper Pairs in Insulators?!  

ScienceCinema (OSTI)

Nearly 50 years elapsed between the discovery of superconductivity and the emergence of the microscopic theory describing this zero resistance state. The explanation required a novel phase of matter in which conduction electrons joined in weakly bound pairs and condensed with other pairs into a single quantum state. Surprisingly, this Cooper pair formation has also been invoked to account for recently uncovered high-resistance or insulating phases of matter. To address this possibility, we have used nanotechnology to create an insulating system that we can probe directly for Cooper pairs. I will present the evidence that Cooper pairs exist and dominate the electrical transport in these insulators and I will discuss how these findings provide new insight into superconductor to insulator quantum phase transitions. 

James Valles

2010-01-08T23:59:59.000Z

256

Building a home from foam—túngara frog foam nest architecture and three-phase construction process  

Science Journals Connector (OSTI)

...2010 research-article Animal behaviour 1001 23 14 Building a home from foam-tungara frog foam nest architecture and three-phase...Data Supplement: Supplementary figures 1, 2 and 3 Building a home from foam--tungara frog foam nest architecture and three-phase...

2010-01-01T23:59:59.000Z

257

Insulator for laser housing  

DOE Patents [OSTI]

The present invention provides a heat-resistant electrical insulator adapted for joining laser housing portions, which insulator comprises: an annulus; a channel in the annulus traversing the circumference and length of the housing; at least two ports, each communicating with the channel and an outer surface of the housing; and an attachment for securely attaching each end of the annulus to a laser housing member.

Duncan, David B. (Auburn, CA)

1992-01-01T23:59:59.000Z

258

Insulator for laser housing  

DOE Patents [OSTI]

The present invention provides a heat-resistant electrical insulator adapted for joining laser housing portions, which insulator comprises: an annulus; a channel in the annulus traversing the circumference and length of the housing; at least two ports, each communicating with the channel and an outer surface of the housing; and an attachment for securely attaching each end of the annulus to a laser housing member. 3 figs.

Duncan, D.B.

1992-12-29T23:59:59.000Z

259

Rheology of nearly ideal 3d foams  

E-Print Network [OSTI]

We probe the complex rheology of nearly ideal 3d foam by flowing through a narrow column. The foams we investigate have large bubble size, to minimize the effects of coarsening, and are very dry. Foams of this type cannot be studied via conventional rheometry. The foam flows upward through a vertical rectangular column with a 4:1 cross-sectional aspect ratio, by bubbling gas through a soapy solution at the base of our apparatus. At the column's narrow surfaces are sticky boundaries, which create shear due to the zero velocity boundary condition. As expected, the flow profile between the adjacent slippery broad faces is flat, however the profile between the narrow, sticky faces exhibits a curved velocity profile that is dependent on gas flow rate. We are able to analyze a 2d velocity profile from a 3d bulk system. We employ particle image velocimetry to measure the strain rate, and compute the stress from the pressure drop along the channel, to investigate the local stress-strain relationships in a flowing foam. We find these dry foams to have a Hershel-Bulkley exponent of 0.21, which is significantly lower (more shear thinning) than other results shown in the literature for much wetter foams.

C. D. Jones; K. N. Nordstrom; D. J. Durian

2014-04-10T23:59:59.000Z

260

REFLEXIVITY AND RIGIDITY FOR COMPLEXES, II: SCHEMES ...  

E-Print Network [OSTI]

Feb 1, 2010 ... our main tools. Indeed, rigid dualizing complexes ... (This opens the way to examination of more general sites, not undertaken here.) One such ...

2011-09-11T23:59:59.000Z

Note: This page contains sample records for the topic "rigid foam insulation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Electoral Competition, Political Uncertainty and Policy Insulation  

E-Print Network [OSTI]

Uncertainty and Policy Insulation Horn, Murray. 1995. TheUncertainty and Policy Insulation United States Congress.UNCERTAINTY AND POLICY INSULATION Rui J. P. de Figueiredo,

de Figueiredo, Rui J. P. Jr.

2001-01-01T23:59:59.000Z

262

Training: Mechanical Insulation | Department of Energy  

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

conjunction with the National Insulation Association and the International Association of Heat and Frost Insulators and Allied Workers. Mechanical insulation can play a significant...

263

Strength scaling of brittle graphitic foam  

Science Journals Connector (OSTI)

...many different type of open- and closed-cell solids such as aerogels (Pekala et al. 1991), graphitic foams (Brezny & Green...mechanical properties and scaling law relationships for silica aerogels and their organic counterparts. Mater. Res. Soc. Symp...

2002-01-01T23:59:59.000Z

264

Coated foams, preparation, uses and articles  

DOE Patents [OSTI]

Hydrophobic cellular material is coated with a thin hydrophilic polymer skin which stretches tightly over the foam but which does not fill the cells of the foam, thus resulting in a polymer-coated foam structure having a smoothness which was not possible in the prior art. In particular, when the hydrophobic cellular material is a specially chosen hydrophobic polymer foam and is formed into arbitrarily chosen shapes prior to the coating with hydrophilic polymer, inertial confinement fusion (ICF) targets of arbitrary shapes can be produced by subsequently coating the shapes with metal or with any other suitable material. New articles of manufacture are produced, including improved ICF targets, improved integrated circuits, and improved solar reflectors and solar collectors. In the coating method, the cell size of the hydrophobic cellular material, the viscosity of the polymer solution used to coat, and the surface tension of the polymer solution used to coat are all very important to the coating.

Duchane, D.V.; Barthell, B.L.

1982-10-21T23:59:59.000Z

265

Math of Popping Bubbles in a Foam  

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

in which liquids mix or in the formation of solid foams such as those used to cushion bicycle helmets. Applying these equations, they used supercomputers at DOE's National Energy...

266

Generalized correlation for foam flow in tubes  

E-Print Network [OSTI]

GENERALIZED CORRELATION FOR FOAM FLOW IN TUBES A Thesis by CAROL LYNNETTE COTTER Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE December.... (December 1996) Carol Lynnette Cotter, B. S. , Texas A&M University Chair of Advisory Committee: Dr. Raymond W. Flumerfelt A novel experimental procedure to determine the behavior of foam flow in tubes is established. Using an approach developed...

Cotter, Carol Lynnette

2012-06-07T23:59:59.000Z

267

Buildings Energy Data Book: 5.1 Building Materials/Insulation  

Buildings Energy Data Book [EERE]

3 3 Thermal Performance of Insulation Fiberglass (2) Perlite/Vermiculite Batts (3) Loose-Fill 2.1 - 3.7 Loose-Fill Foam Boards Spray-Applied Expanded Polystyrene 3.9 - 4.4 Rock Wool (2) Polyisocyanurate/Polyurethane 5.6 - 7.0 Loose-Fill Phenolic 4.4 - 8.2 Cellulose Reflective Insulation 2 - 17 Loose-Fill Vacuum Powder Insulation 25 - 30 Spray-Applied Vacuum Insulation Panel 20 - 100 Note(s): Source(s): 3.1 - 3.7 2.9 - 3.5 1) Hr-SF-F/Btu-in. Does not include the effects of aging and settling. 2) Mineral fiber. 3) System R-Value depends on heat-flow direction and number of air spaces. ASHRAE, 1997 ASHRAE Handbook: Fundamentals, p. 24-4, 22-5; DOE, Insulation Fact Sheet, Jan. 1988, p. 6; Journal of Thermal Insulation, 1987, p. 81-95; ORNL, ORNL/SUB/88-SA835/1, 1990; ORNL, Science and Technology for a Sustainable Energy Future, Mar. 1995, p. 17; and ORNL for vacuum insulation

268

Relativistic elasticity of rigid rods and strings  

E-Print Network [OSTI]

We show that the equation of motion for a rigid one-dimensional elastic body (i.e. a rod or string whose speed of sound is equal to the speed of light) in a two-dimensional spacetime is simply the wave equation. We then solve this equation in a few simple examples: a rigid rod colliding with an unmovable wall, a rigid rod being pushed by a constant force, a rigid string whose endpoints are simultaneously set in motion (seen as a special case of Bell's spaceships paradox), and a radial rigid string that has partially crossed the event horizon of a Schwarzschild black hole while still being held from the outside.

Jose Natario

2014-06-03T23:59:59.000Z

269

High Reliability R-10 Windows Using Vacuum Insulating Glass Units  

SciTech Connect (OSTI)

The objective of this effort was for EverSealed Windows (“EverSealed” or “ESW”) to design, assemble, thermally and environmentally test and demonstrate a Vacuum Insulating Glass Unit (“VIGU” or “VIG”) that would enable a whole window to meet or exceed the an R-10 insulating value (U-factor ? 0.1). To produce a VIGU that could withstand any North American environment, ESW believed it needed to design, produce and use a flexible edge seal system. This is because a rigid edge seal, used by all other know VIG producers and developers, limits the size and/or thermal environment of the VIG to where the unit is not practical for typical IG sizes and cannot withstand severe outdoor environments. The rigid-sealed VIG’s use would be limited to mild climates where it would not have a reasonable economic payback when compared to traditional double-pane or triple-pane IGs. ESW’s goals, in addition to achieving a sufficiently high R-value to enable a whole window to achieve R-10, included creating a VIG design that could be produced for a cost equal to or lower than a traditional triple-pane IG (low-e, argon filled). ESW achieved these goals. EverSealed produced, tested and demonstrated a flexible edge-seal VIG that had an R-13 insulating value and the edge-seal system durability to operate reliably for at least 40 years in the harshest climates of North America.

Stark, David

2012-08-16T23:59:59.000Z

270

Highly Insulating Window Technology  

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

Window Technology Window Technology Temperature differentials across a window, particularly with cold exterior environments in residential buildings, can lead to significant energy losses. Currently available low-emissivity coatings, gas-fills, and insulating frames provide significant energy savings over typical single or double glazed products. The EWC website provides information on how double glazed low-e gas-filled windows work as well as information on commercially available superwindows (three layer, multiple low-e coatings, high performance gas-fills). The next generation of highly insulating window systems will benefit from incremental improvements being made to current components (i.e. more insulating spacers and frame materials/designs, low-e coatings with improved performance properties). LBNL uses its experimental facilities and software tools to collaborate with window and glass industry representatives to better understand the impacts of new components on overall product performance.

271

Micropore Characterization of Mesocellular Foam and Hybrid Organic Functional Mesocellular Foam Materials  

Science Journals Connector (OSTI)

Micropore Characterization of Mesocellular Foam and Hybrid Organic Functional Mesocellular Foam Materials ... The authors acknowledge the Australian Research Council (ARC) for the support of ARC Discovery Grant DP0451387 and access to infrastructure from the Particulate Fluids Processing Centre, a Special Research Centre of the ARC. ...

Sasha Boskovic; Anita J. Hill; Terry W. Turney; Geoffrey W. Stevens; Michelle L. Gee; Andrea J. O’Connor

2009-12-01T23:59:59.000Z

272

Domestic Heating and Thermal Insulation  

Science Journals Connector (OSTI)

... DIGEST 133 of the Building Research Station, entitled "Domestic Heating and Thermal Insulation" (Pp. 7. London : H.M. Stationery Office, 1960. 4insulation, the standard of heating, the ventilation-rate and the length of the heating season ...

1960-09-17T23:59:59.000Z

273

Thermal Insulation for Energy Conservation  

Science Journals Connector (OSTI)

The use of thermal insulations to reduce heat flow across the building ... decades. Materials available for use as building insulation include naturally occurring fibers and particles, man ... plastics, evacuated...

Dr. David W. Yarbrough Ph.D.; PE

2012-01-01T23:59:59.000Z

274

Contaminant trap for gas-insulated apparatus  

DOE Patents [OSTI]

A resinous body is placed in gas-insulated electrical apparatus to remove particulate material from the insulating gas.

Adcock, J.L.; Pace, M.O.; Christophorou, L.G.

1984-01-01T23:59:59.000Z

275

Peg supported thermal insulation panel  

DOE Patents [OSTI]

A thermal insulation panel which is lightweight, load bearing, accommodates thermal stress, and has excellent high temperature insulation capability comprises high performance insulation between thin metal walls supported by high density, high strength glass pegs made in compliance with specified conditions of time, temperature and pressure. 2 figs.

Nowobilski, J.J.; Owens, W.J.

1985-04-30T23:59:59.000Z

276

Peg supported thermal insulation panel  

DOE Patents [OSTI]

A thermal insulation panel which is lightweight, load bearing, accommodates thermal stress, and has excellent high temperature insulation capability comprising high performance insulation between thin metal walls supported by high density, high strength glass pegs made in compliance with specified conditions of time, temperature and pressure.

Nowobilski, Jeffert J. (Orchard Park, NY); Owens, William J. (Kenmore, NY)

1985-01-01T23:59:59.000Z

277

Switching Surges and Air Insulation  

Science Journals Connector (OSTI)

...research-article Switching Surges and Air Insulation B. Jones Some thirteen years ago...reduction was noticed in the strength of air insulation when subjected to slowly rising positive...collected in high voltage laboratories. Insulation against switching surges is now seen...

1973-01-01T23:59:59.000Z

278

Conductive Rigid Skeleton Supported Silicon as High-Performance...  

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

Conductive Rigid Skeleton Supported Silicon as High-Performance Li-Ion Battery Anodes. Conductive Rigid Skeleton Supported Silicon as High-Performance Li-Ion Battery Anodes....

279

Thermal insulation with paper honeycombs with solar gain  

SciTech Connect (OSTI)

In this contribution the authors describe the concept and the model for the heat flux and the effective U-value of paper honeycombs (PHC) used as efficient and cheap transparent insulation material. With this thermal-insulation-material static U-values of U = 0.25 W/(m{sup 2}K) are obtained due to the very low thermal conduction value {lambda} = 0.04 W/(mK), which is comparable to thermal insulators as PU-foam or mineral wool. Contrary to conventional insulation materials PHC also gathers solar radiation due to its geometry, thereby providing heat flux into the interior of the building. Because the angle of incidence of the sun in wintertime is low, the direct solar radiation is absorbed approximately within the outermost 3 centimeters of the PHC. Even at ambient temperatures below 0 C, this region is warmed up to 60 C. By conduction the heat is brought to the brick wall underneath, which acts as reservoir and gets to temperatures between 15 and 30 C. Calculated across the full heating period, it is shown, that effective U values of 0.14 W/(m{sup 2}K) are reached by using PHC, reducing the brick wall U value by a factor of 3/4. Contrary to other transparent thermal insulation systems, e.g. developed by the Fraunhofer Institute for Solar Energy Systems, this system does not overheat during summertime, because the capillary structure is shielding the solar rays. A Windows based program solves the heat conduction equation with finite element methods.

Hingerl, K.; Baumgartner, G.; Aschauer, H.

1996-12-31T23:59:59.000Z

280

FOAM: Fast Ocean Atmosphere Model | Argonne National Laboratory  

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

FOAM: Fast Ocean Atmosphere Model FOAM: Fast Ocean Atmosphere Model FOAM: Fast Ocean Atmosphere Model FOAM is a fully coupled, mixed-resolution, general circulation model designed for high-throughput (simulated years per day) while still providing a good simulated mean climate and simulated variability. FOAM uses the combination of a low resolution (R15) atmosphere model, a highly efficient medium-resolution ocean model, and distributed memory parallel processing to achieve high throughput on relatively modest numbers of processors (16-64). The quality of the simulated climate compares well with higher resolution models. No flux corrections are used. FOAM's intended purpose is to study long-term natural variability in the climate system. FOAM is also well suited for paleoclimate applications. FOAM is highly

Note: This page contains sample records for the topic "rigid foam insulation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Foam target experiments with the PF-1000 plasma focus facility  

Science Journals Connector (OSTI)

This paper describes experiments on foam liners performed with the PF-1000 plasma focus facility. A streak camera has been used ... foam liner can be uniformly imploded by a plasma focus current sheath.

L. Karpinski; M. Scholz; J.G. Linhart…

1999-09-01T23:59:59.000Z

282

Foam-buffered laser-matter interactions  

SciTech Connect (OSTI)

Recent experiments indicate that low-density foam buffer layers can significantly mitigate the perturbing effects of beam non-uniformities in direct drive laser-matter interactions. Results of a computational study with a 2D ALE code are reported here. Typical targets consisted of 50 {mu}m of 50mg/cm{sup 3} C{sub 10}H{sub 8}O{sub 4} foam attached to a 10 {mu}m foil and covered with 250 {Angstrom} of gold. These targets were exposed to {approximately}1.2ns, flat topped, green light pulses at {approximately}1.4{times}10{sup 14}W/cm{sup 2} intensity, bearing 30 {mu}m lateral perturbations. Without the buffer layers the foils were severely disrupted after 1 ns of laser illumination. Buffering could provide stability for more than 2 ns of full shell acceleration. Our study shows that the high thermal conductivity of the foam results in flattened shocks in the foam plasma, communicating a smoothed laser drive to the accelerated shells. Preheat from the gold hastens conversion of solid foam to a heated plasma. {copyright} {ital 1997 American Institute of Physics.}

Mason, R.J.; Kopp, R.A.; Vu, H.X.; Wilson, D.C.; Goldman, S.R.; Watt, R.G. [Los Alamos National Laboratory, Los Alamos, New Mexico87545 (United States)] Willi, O. [The Blacket Laboratory, Imperial College of Science and Technology London, SW72Bz (United Kingdom)

1997-04-01T23:59:59.000Z

283

Foam-buffered laser-matter interactions  

SciTech Connect (OSTI)

Recent experiments indicate that low-density foam buffer layers can significantly mitigate the perturbing effects of beam non-uniformities in direct drive laser-matter interactions. Results of a computational study with a 2D ALE code are reported here. Typical targets consisted of 50 {mu}m of 50 mg/cm{sup 3} C{sub 10}H{sub 8}O{sub 4} foam attached to a 10 {mu}m foil and covered with 250 A of gold. These targets were exposed to {approx}1.2 ns, flat topped, green light pulses at {approx}1.4x10{sup 14} W/cm{sup 2} intensity, bearing 30 {mu}m lateral perturbations. Without the buffer layers the foils were severely disrupted after 1 ns of laser illumination. Buffering could provide stability for more than 2 ns of full shell acceleration. Our study shows that the high thermal conductivity of the foam results in flattened shocks in the foam plasma, communicating a smoothed laser drive to the accelerated shells. Preheat from the gold hastens conversion of solid foam to a heated plasma.

Mason, R. J.; Kopp, R. A.; Vu, H. X.; Wilson, D. C.; Goldman, S. R.; Watt, R. G. [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States); Willi, O. [Blacket Laboratory, Imperial College of Science and Technology London, SW72Bz (United Kingdom)

1997-04-15T23:59:59.000Z

284

Foam-buffered laser-matter interactions  

SciTech Connect (OSTI)

Recent experiments indicate that low-density foam buffer layers can significantly mitigate the perturbing effects of beam non-uniformities in direct drive laser-matter interactions. Results of a computational study with a 2D ALE code are reported here. Typical targets consisted of 50 {micro}m of 50 mg/cm{sup 3} C{sub 10}H{sub 8}O{sub 4} foam attached to a 10 {micro}m foil and covered with 250 {angstrom} of gold. These targets were exposed to {approximately} 1.2 ns, flat topped, green light pulses at {approximately} 1.4 {times} 10{sup 14} W/cm{sup 2} intensity, bearing 30 {micro}m lateral perturbations. Without the buffer layers the foils were severely disrupted after 1 ns of laser illumination. Buffering could provide stability for more than 2 ns of full shell acceleration. This study shows that the high thermal conductivity of the foam results in flattened shocks in the foam plasma, communicating a smoothed laser drive to the accelerated shells. Preheat from the gold hastens conversion of solid foam to the smoothing heated plasma.

Mason, R.J.; Kopp, R.A.; Vu, H.X.; Wilson, D.C.; Goldman, S.R.; Watt, R.G.

1997-10-01T23:59:59.000Z

285

Fire-Induced Response in Foam Encapsulants  

SciTech Connect (OSTI)

The paper provides a concise overview of a coordinated experimental/theoretical/numerical program at Sandia National Laboratories to develop an experimentally validated model of fire-induced response of foam-filled engineered systems for nuclear and transportation safety applications. Integral experiments are performed to investigate the thermal response of polyurethane foam-filled systems exposed to fire-like heat fluxes. A suite of laboratory experiments is performed to characterize the decomposition chemistry of polyurethane. Mass loss and energy associated with foam decomposition and chemical structures of the virgin and decomposed foam are determined. Decomposition chemistry is modeled as the degradation of macromolecular structures by bond breaking followed by vaporization of small fragments of the macromolecule with high vapor pressures. The chemical decomposition model is validated against the laboratory data. Data from integral experiments is used to assess and validate a FEM foam thermal response model with the chemistry model developed from the decomposition experiments. Good agreement was achieved both in the progression of the decomposition front and the in-depth thermal response.

Borek, T.T.; Chu, T.Y.; Erickson, K.L.; Gill, W.; Hobbs, M.L.; Humphries, L.L.; Renlund, A.M.; Ulibarri, T.A.

1999-04-02T23:59:59.000Z

286

Dissipative flows of 2D foams  

E-Print Network [OSTI]

We analyze the flow of a liquid foam between two plates separated by a gap of the order of the bubble size (2D foam). We concentrate on the salient features of the flow that are induced by the presence, in an otherwise monodisperse foam, of a single large bubble whose size is one order of magnitude larger than the average size. We describe a model suited for numerical simulations of flows of 2D foams made up of a large number of bubbles. The numerical results are successfully compared to analytical predictions based on scaling arguments and on continuum medium approximations. When the foam is pushed inside the cell at a controlled rate, two basically different regimes occur: a plug flow is observed at low flux whereas, above a threshold, the large bubble migrates faster than the mean flow. The detailed characterization of the relative velocity of the large bubble is the essential aim of the present paper. The relative velocity values, predicted both from numerical and from analytical calculations that are discussed here in great detail, are found to be in fair agreement with experimental results.

Isabelle Cantat; Renaud Delannay

2005-07-21T23:59:59.000Z

287

Multifunctional Corrosion-resistant Foamed Well Cement Composites  

Broader source: Energy.gov [DOE]

Multifunctional Corrosion-resistant Foamed Well Cement Composites presentation at the April 2013 peer review meeting held in Denver, Colorado.

288

Numerical techniques of rigid body simulation  

E-Print Network [OSTI]

In recent years, the modeling of physical phenomena has become an integral part of computer applications in diverse areas from engineering to entertainment. This thesis focuses on a particular aspect of this modeling, the simulation of rigid...

Eberle, David Michael

2012-06-07T23:59:59.000Z

289

Experiments to Populate and Validate a Processing Model for Polyurethane Foam: Additional Data for Structural Foams.  

SciTech Connect (OSTI)

We are developing computational models to help understand manufacturing processes, final properties and aging of structural foam, polyurethane PMDI. Th e resulting model predictions of density and cure gradients from the manufacturing process will be used as input to foam heat transfer and mechanical models. BKC 44306 PMDI-10 and BKC 44307 PMDI-18 are the most prevalent foams used in structural parts. Experiments needed to parameterize models of the reaction kinetics and the equations of motion during the foam blowing stages were described for BKC 44306 PMDI-10 in the first of this report series (Mondy et al. 2014). BKC 44307 PMDI-18 is a new foam that will be used to make relatively dense structural supports via over packing. It uses a different catalyst than those in the BKC 44306 family of foams; hence, we expect that the reaction kineti cs models must be modified. Here we detail the experiments needed to characteriz e the reaction kinetics of BKC 44307 PMDI-18 and suggest parameters for the model based on these experiments. In additi on, the second part of this report describes data taken to provide input to the preliminary nonlinear visco elastic structural response model developed for BKC 44306 PMDI-10 foam. We show that the standard cu re schedule used by KCP does not fully cure the material, and, upon temperature elevation above 150 o C, oxidation or decomposition reactions occur that alter the composition of the foam. These findings suggest that achieving a fully cured foam part with this formulation may be not be possible through therma l curing. As such, visco elastic characterization procedures developed for curing thermosets can provide only approximate material properties, since the state of the material continuously evolves during tests.

Rao, Rekha R.; Celina, Mathias C.; Giron, Nicholas Henry; Long, Kevin Nicholas; Russick, Edward M.

2015-01-01T23:59:59.000Z

290

Math of Popping Bubbles in a Foam  

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

Math of Popping Math of Popping Bubbles in a Foam Math of Popping Bubbles in a Foam Berkeley Lab researchers mathematically describe the complex evolution and disappearance of foamy bubbles May 9, 2013 | Tags: Hopper, Math & Computer Science Media Contacts: UC Berkeley: Robert Sanders, rsanders@berkeley.edu, (510) 643-6998 Berkeley Lab: Linda Vu, lvu@lbl.gov, (510) 495-2404 Written By Robert Sanders Bubble baths and soapy dishwater, the refreshing head on a beer and the luscious froth on a cappuccino. All are foams, beautiful yet ephemeral as the bubbles pop one by one. Now, two researchers from the Department of Energy's (DOE's) Lawrence Berkeley National Laboratory (Berkeley Lab) and the University of California, Berkeley have described mathematically the successive stages in the complex evolution and disappearance of foamy

291

Eddy current characterization of metal foams  

SciTech Connect (OSTI)

Cellular materials are characterized by their relative density, pore shape and orientation, the average cell size, and the degree of pore interconnectivity which all depend upon the method and conditions used for processing. This has created an interest in non-invasive sensor techniques to characterize the foam structure. Multifrequency electrical impedance measurements were performed using an eddy current technique on open cell aluminum foam with systematically varied relative densities and pore sizes. The impedance was dominated at all frequencies by the amount of metal contained within a probed volume of foam and the tortuosity of the current path. At low frequency, the impedance data were found to be relatively insensitive to pore size variations enabling an independent measure of the relative density. At higher frequency, the data indicated a strong dependence on the cell size.

Dharmasena, K.P.; Wadley, H.N.G. [Univ. of Virginia, Charlottesville, VA (United States). Intelligent Processing of Materials Lab.

1998-12-31T23:59:59.000Z

292

Field Derived Emission Factors For Formaldehyde and other Volatile Organic Compounds in FEMA Temporary Housing Units  

E-Print Network [OSTI]

Urea Formaldehyde Foam Insulation (UFFI), Consumer Product1972 urea formaldehyde foam insulation (UFFI) caused health

Parthasarathy, Srinandini

2011-01-01T23:59:59.000Z

293

Highly Insulating Windows - Cost  

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

Cost Cost The following is an estimate of the cost effective incremental cost of highly-insulating windows (U-factor=0.20 Btu/hr-ft2-F) compared to regular ENERGY STAR windows (U-factor 0.35 Btu/hr-ft2-F). Energy savings from lower U-factors were simulated with RESFEN over an assumed useful window life of 25 years. To determine the maximum incremental cost at which highly-insulating windows would still be cost-effective, we used a formula used by many utility companies to calculate the cost of saved energy from energy efficiency programs, based on the programs' cost and savings. We turned this formula around so that the cost of saved energy equals the present energy prices in the studied locations, whereas the program cost (the incremental cost of the windows) is the dependent variable. By entering 5%

294

Compact vacuum insulation  

DOE Patents [OSTI]

An ultra-thin compact vacuum insulation panel is comprised of two hard, but bendable metal wall sheets closely spaced apart from each other and welded around the edges to enclose a vacuum chamber. Glass or ceramic spacers hold the wall sheets apart. The spacers can be discrete spherical beads or monolithic sheets of glass or ceramic webs with nodules protruding therefrom to form essentially "point" or "line" contacts with the metal wall sheets. In the case of monolithic spacers that form "line" contacts, two such spacers with the line contacts running perpendicular to each other form effectively "point" contacts at the intersections. Corrugations accommodate bending and expansion, tubular insulated pipes and conduits, and preferred applications are also included.

Benson, David K. (Golden, CO); Potter, Thomas F. (Denver, CO)

1993-01-01T23:59:59.000Z

295

Compact vacuum insulation embodiments  

DOE Patents [OSTI]

An ultra-thin compact vacuum insulation panel is comprised of two hard, but bendable metal wall sheets closely spaced apart from each other and welded around the edges to enclose a vacuum chamber. Glass or ceramic spacers hold the wall sheets apart. The spacers can be discrete spherical beads or monolithic sheets of glass or ceramic webs with nodules protruding therefrom to form essentially "point" or "line" contacts with the metal wall sheets. In the case of monolithic spacers that form "line" contacts, two such spacers with the line contacts running perpendicular to each other form effectively "point" contacts at the intersections. Corrugations accommodate bending and expansion, tubular insulated pipes and conduits, and preferred applications are also included.

Benson, David K. (Golden, CO); Potter, Thomas F. (Denver, CO)

1992-01-01T23:59:59.000Z

296

Compact vacuum insulation  

DOE Patents [OSTI]

An ultra-thin compact vacuum insulation panel is comprised of two hard, but bendable metal wall sheets closely spaced apart from each other and welded around the edges to enclose a vacuum chamber. Glass or ceramic spacers hold the wall sheets apart. The spacers can be discrete spherical beads or monolithic sheets of glass or ceramic webs with nodules protruding therefrom to form essentially point'' or line'' contacts with the metal wall sheets. In the case of monolithic spacers that form line'' contacts, two such spacers with the line contacts running perpendicular to each other form effectively point'' contacts at the intersections. Corrugations accommodate bending and expansion, tubular insulated pipes and conduits, and preferred applications are also included.

Benson, D.K.; Potter, T.F.

1993-01-05T23:59:59.000Z

297

Experiments for foam model development and validation.  

SciTech Connect (OSTI)

A series of experiments has been performed to allow observation of the foaming process and the collection of temperature, rise rate, and microstructural data. Microfocus video is used in conjunction with particle image velocimetry (PIV) to elucidate the boundary condition at the wall. Rheology, reaction kinetics and density measurements complement the flow visualization. X-ray computed tomography (CT) is used to examine the cured foams to determine density gradients. These data provide input to a continuum level finite element model of the blowing process.

Bourdon, Christopher Jay; Cote, Raymond O.; Moffat, Harry K.; Grillet, Anne Mary; Mahoney, James F. (Honeywell Federal Manufacturing and Technologies, Kansas City Plant, Kansas City, MO); Russick, Edward Mark; Adolf, Douglas Brian; Rao, Rekha Ranjana; Thompson, Kyle Richard; Kraynik, Andrew Michael; Castaneda, Jaime N.; Brotherton, Christopher M.; Mondy, Lisa Ann; Gorby, Allen D.

2008-09-01T23:59:59.000Z

298

Gas filled panel insulation  

DOE Patents [OSTI]

A structural or flexible highly insulative panel which may be translucent, is formed from multi-layer polymeric material in the form of an envelope surrounding a baffle. The baffle is designed so as to minimize heat transfer across the panel, by using material which forms substantially closed spaces to suppress convection of the low conductivity gas fill. At least a portion of the baffle carries a low emissivity surface for suppression of infrared radiation.

Griffith, Brent T. (Berkeley, CA); Arasteh, Dariush K. (Oakland, CA); Selkowitz, Stephen E. (Piedmont, CA)

1993-01-01T23:59:59.000Z

299

Gas filled panel insulation  

DOE Patents [OSTI]

A structural or flexible highly insulative panel which may be translucent, is formed from multi-layer polymeric material in the form of an envelope surrounding a baffle. The baffle is designed so as to minimize heat transfer across the panel, by using material which forms substantially closed spaces to suppress convection of the low conductivity gas fill. At least a portion of the baffle carries a low emissivity surface for suppression of infrared radiation. 18 figures.

Griffith, B.T.; Arasteh, D.K.; Selkowitz, S.E.

1993-12-14T23:59:59.000Z

300

Superconducting Topological Insulators  

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

Superconducting Topological Insulators Print Superconducting Topological Insulators Print Three-dimensional topological insulators (TIs), discovered experimentally in 2007-2009 by a Princeton-ALS collaboration, are a promising platform for developing the next generation of electronics. Electrons within one nanometer of a TI's surface move at high speeds in a "light-like" fashion. The quantum interactions that generate these electronic states cause individual electrons to be spin polarized even at room temperature and to strongly resist scattering from defects, naturally achieving some of the most desirable traits for computing components and next-generation "spintronics" technologies. More recent angle-resolved photoemission spectroscopy (ARPES) studies performed at ALS Beamlines 10.0.1 and 12.0.1 by the same collaboration have paved a way for these novel material properties to be taken even further. Their studies showed that by doping the TI, bismuth selenide, with copper, it's possible to make the topologically ordered electrons superconducting, dropping electrical resistance in the surface states all the way to zero.

Note: This page contains sample records for the topic "rigid foam insulation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Superconducting Topological Insulators  

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

Superconducting Topological Insulators Print Superconducting Topological Insulators Print Three-dimensional topological insulators (TIs), discovered experimentally in 2007-2009 by a Princeton-ALS collaboration, are a promising platform for developing the next generation of electronics. Electrons within one nanometer of a TI's surface move at high speeds in a "light-like" fashion. The quantum interactions that generate these electronic states cause individual electrons to be spin polarized even at room temperature and to strongly resist scattering from defects, naturally achieving some of the most desirable traits for computing components and next-generation "spintronics" technologies. More recent angle-resolved photoemission spectroscopy (ARPES) studies performed at ALS Beamlines 10.0.1 and 12.0.1 by the same collaboration have paved a way for these novel material properties to be taken even further. Their studies showed that by doping the TI, bismuth selenide, with copper, it's possible to make the topologically ordered electrons superconducting, dropping electrical resistance in the surface states all the way to zero.

302

Superconducting Topological Insulators  

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

Superconducting Topological Insulators Print Superconducting Topological Insulators Print Three-dimensional topological insulators (TIs), discovered experimentally in 2007-2009 by a Princeton-ALS collaboration, are a promising platform for developing the next generation of electronics. Electrons within one nanometer of a TI's surface move at high speeds in a "light-like" fashion. The quantum interactions that generate these electronic states cause individual electrons to be spin polarized even at room temperature and to strongly resist scattering from defects, naturally achieving some of the most desirable traits for computing components and next-generation "spintronics" technologies. More recent angle-resolved photoemission spectroscopy (ARPES) studies performed at ALS Beamlines 10.0.1 and 12.0.1 by the same collaboration have paved a way for these novel material properties to be taken even further. Their studies showed that by doping the TI, bismuth selenide, with copper, it's possible to make the topologically ordered electrons superconducting, dropping electrical resistance in the surface states all the way to zero.

303

Highly Insulating Windows - Fram  

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

Frames Frames Research performed at the Norwegian University of Science and Technology and LBNL has identified various highly insulating frame solutions. A report was released in 2007 describing some of these frames. This document reports the findings of a market and research review related to state-of-the-art highly insulating window frames. The market review focuses on window frames that satisfy the Passivhaus requirements (window U-value less or equal to 0.8 W/m2K ), while other examples are also given in order to show the variety of materials and solutions that may be used for constructing window frames with a low thermal transmittance (U-value). The market search shows that several combinations of materials are used in order to obtain window frames with a low U-value. The most common insulating material seems to be Polyurethane (PUR), which is used together with most of the common structural materials such as wood, aluminum, and PVC.

304

Low density microcellular carbon foams and method of preparation  

DOE Patents [OSTI]

A low density, open-celled microcellular carbon foam is disclosed which is prepared by dissolving a carbonizable polymer or copolymer in a solvent, pouring the solution into a mold, cooling the solution, removing the solvent, and then carbonizing the polymer or copolymer in a high temperature oven to produce the foam. If desired, an additive can be introduced in order to produce a doped carbon foam, and the foams can be made isotropic by selection of a suitable solvent. The low density, microcellular foams produced by this process are particularly useful in the fabrication of inertial confinement fusion targets, but can also be used as catalysts, absorbents, and electrodes.

Arnold, Jr., Charles (Albuquerque, NM); Aubert, James H. (Albuquerque, NM); Clough, Roger L. (Albuquerque, NM); Rand, Peter B. (Albuquerque, NM); Sylwester, Alan P. (Albuquerque, NM)

1989-01-01T23:59:59.000Z

305

A COMPARISON OF TWO THERMAL INSULATION AND STRUCTURAL MATERIALS FOR USE IN TYPE B PACKAGINGS  

SciTech Connect (OSTI)

This paper presents the summary of design features and test results of two Type B Shipping Package prototype configurations comprising different insulating materials developed by the Savannah River National Laboratory (SRNL) for the Department of Energy. The materials evaluated, a closed-cell polyurethane foam and a vacuformed ceramic fiber material, were selected to provide adequate structural protection to the package containment vessel during Normal Conditions of Transport (NCT) and Hypothetical Accident Condition (HAC) events and to provide thermal protection during the HAC fire. Polyurethane foam has been used in shipping package designs for many years because of the stiffness it provides to the structure and because of the thermal protection it provides during fire scenarios. This comparison describes how ceramic fiber material offers an alternative to the polyurethane foam in a specific overpack design. Because of the high operating temperature ({approx}2,300 F) of the ceramic material, it allows for contents with higher heat loads to be shipped than is possible with polyurethane foam. Methods of manufacturing and design considerations using the two materials will be addressed.

Blanton, P.; Eberl, K.

2010-07-16T23:59:59.000Z

306

Laboratory test results on the thermal resistance of polyisocyanurate foamboard insulation blown with CFC-11 substitutes: A cooperative industry/government project  

SciTech Connect (OSTI)

The fully halogenated chlorofluorocarbon gases (CFC-11 and CFC-12) are used as blowing agents for foam insulations for building and appliance applications. The thermal resistance per unit thickness of these insulations is greater than that of other commercially available insulations. Mandated reductions in the production of these chemicals may lead to less efficient substitutes and increase US energy consumption by one quad or more. This report describes laboratory thermal and aging tests on a set of industry-produced, experimental polyisocyanurate (PIR) laminate boardstock to evaluate the viability of hydrochlorofluorocarbons (HCFSs) as alternative blowing agents to chlorofluorcarbon-11 (CFC-11). The PIR boards were blown with five gases: CFC-11, HCFC- 123, HCFC-141b, and 50/50 and 65/35 blends of HCFC-123/HCFC-141b. These HCFC gases have a lower ozone depletion potential than CFC-11 or CFC-12. Apparent thermal conductivity (k) was determined from 0 to 50{degrees}C. Results on the laminate boards provide an independent laboratory check on the increase in k observed for field exposure in the Roof Thermal Research Apparatus (RTRA). The measured laboratory increase in k was between 8 and 11% after a 240-d field exposure in the RTRA. Results are reported on a thin-specimen, aging procedure to establish the long-term thermal resistance of gas-filled foams. These thin specimens were planed from the industry-produced boardstock foams and aged at 75 and 150{degrees}F for up to 300 d. The resulting k-values were correlated with an exponential dependency on (diffusion coefficient {times} time){sup {1/2}}/thickness and provided diffusion coefficients for air components into, and blowing agent out of, the foam. This aging procedure was used to predict the five-year thermal resistivity of the foams. The thin-specimen aging procedure is supported with calculations by a computer model for aging of foams. 43 refs., 33 figs., 25 tabs.

McElroy, D.L.; Graves, R.S.; Yarbrough, D.W.; Weaver, F.J.

1991-09-01T23:59:59.000Z

307

Bending properties of foamed aluminum panels and sandwiches  

SciTech Connect (OSTI)

The foamed panels and sandwiches were prepared by powder metallurgical route using various matrix alloys. The effect of the apparent density, geometry and structure of the foam on its bending stiffness was studied with respect to the results of the four-point-bending. It has been shown that the modulus of elasticity of the foam cannot be related only to its apparent density, because the distribution of the cell-wall material along the thickness of the foamed panel is not uniform. Therefore the real moment of inertia of the foam`s cross-section should be used for the calculation of bending stiffness. This moment can be determined from the square weight of the foamed sample.

Simancik, F.; Kovacik, J.; Minarikova, N. [Inst. of Materials and Machine Mechanics, Bratislava (Slovakia)

1998-12-31T23:59:59.000Z

308

Experimental characterization of foam drainage and stability  

E-Print Network [OSTI]

generated from AOS, CD 1045, and SDS. These foams are stable under our experimental conditions (applied pressure difference = 3-7 psi). The critical concentrations for these surfactants are found to be 0.014, 0.04, and 0.06 wt % respectively. A theoretical...

Sheth, Vikas Rameshchandra

2012-06-07T23:59:59.000Z

309

Modeling of Sandwich Sheets with Metallic Foam  

SciTech Connect (OSTI)

World-wide vehicles safety experts agree that significant further reductions in fatalities and injuries can be achieved as a result of the use of new lightweight and energy absorbing materials. On this work, the authors present the development and evaluation of an innovative system able to perform reliable panels of sandwich sheets with metallic foam cores for industrial applications. The mathematical model used to describe the behavior of sandwich shells with metal cores foam is presented and some numerical examples are presented. In order to validate those results mechanical experiments are carried out. Using the crushable foam constitutive model, available on ABAQUS, a set of different mechanical tests were simulated. There are two variants of this model available on ABAQUS: the volumetric hardening model and the isotropic hardening model. As a first approximation we chose the isotropic hardening variant. The isotropic hardening model available uses a yield surface that is an ellipse centered at the origin in the p-q stress plane. Based on this constitutive model for the foam, numerical simulations of the tensile and bulge test will be conducted. The numerical results will be validated using the data obtained from the experimental results.

Mata, H.; Jorge, R. Natal; Fernandes, A. A.; Parente, M. P. L. [IDMEC-FEUP, Faculdade de Engenharia da Universidade do Porto, Rua Dr. Roberto Frias 4200-465 Porto (Portugal); Santos, A. [INEGI, Faculdade de Engenharia da Universidade do Porto, Rua Dr. Roberto Frias 4200-465 Porto (Portugal); Valente, R. A. F. [Universidade de Aveiro, Campus Universitario de Santiago 3810-193 Aveiro (Portugal)

2011-08-22T23:59:59.000Z

310

Thermal insulations using vacuum panels  

DOE Patents [OSTI]

Thermal insulation vacuum panels are formed of an inner core of compressed low thermal conductivity powders enclosed by a ceramic/glass envelope evaluated to a low pressure.

Glicksman, Leon R. (Lynnfield, MA); Burke, Melissa S. (Pittsburgh, PA)

1991-07-16T23:59:59.000Z

311

The Microbiological Deterioration of Rubber Insulation  

Science Journals Connector (OSTI)

...Microbiological Deterioration of Rubber Insulation John T. Blake Donald W. Kitchin Orison...Microbiological Deterioration of Rubber Insulation JOHN T. BLAKE, DONALD W. KITCHIN...By burying wire samples with thin insulation in active soil, the rate of failure...

John T. Blake; Donald W. Kitchin; Orison S. Pratt

1955-01-01T23:59:59.000Z

312

Ground Insulation Measurement in AC IT Systems  

Science Journals Connector (OSTI)

In the chapter there is presented general information on physical nature of network-to-ground insulation. Sense of “insulation equivalent resistance” parameter is explained. A method of insulation resistances-to-...

Piotr Olszowiec

2013-01-01T23:59:59.000Z

313

Compact vacuum insulation  

DOE Patents [OSTI]

Improved compact insulation panel is provided which is comprised of two adjacent metal sheets spaced close together with a plurality of spherical, or other discretely shaped, glass or ceramic beads optimally positioned between the sheets to provide support and maintain the spacing between the metal sheets when the gases there between are evacuated to form a vacuum. These spherical glass beads provide the maximum support while minimizing thermal conductance. In its preferred embodiment; these two metal sheets are textured with ribs or concave protrusions in conjunction with the glass beads to maximize the structural integrity of the panels while increasing the spacing between beads, thereby reducing the number of beads and the number of thermal conduction paths. Glass or porcelain-enameled liners in combination with the glass spacers and metal sidewalls effectively decrease thermal conductivity, and various laminates, including wood, porcelain-enameled metal, and others effectively increase the strength and insulation capabilities of the panels. Also, a metal web is provided to hold the spacers in place, and strategic grooves are shown to accommodate expansion and contraction or shaping of the panels. 35 figs.

Benson, D.K.; Potter, T.F.

1992-10-27T23:59:59.000Z

314

Compact vacuum insulation  

DOE Patents [OSTI]

Improved compact insulation panel is provided which is comprised of two adjacent metal sheets spaced close together with a plurality of spherical, or other discretely shaped, glass or ceramic beads optimally positioned between the sheets to provide support and maintain the spacing between the metal sheets when the gases therebetween are evacuated to form a vacuum. These spherical glass beads provide the maximum support while minimizing thermal conductance. In its preferred embodiment; these two metal sheets are textured with ribs or concave protrusions in conjunction with the glass beads to maximize the structural integrity of the panels while increasing the spacing between beads, thereby reducing the number of beads and the number of thermal conduction paths. Glass or porcelain-enameled liners in combination with the glass spacers and metal sidewalls effectively decrease thermal conductivity, and variious laminates, including wood, porcelain-enameled metal, and others effectively increase the strength and insulation capabilities of the panels. Also, a metal web is provided to hold the spacers in place, and strategic grooves are shown to accommodate expansion and contraction or shaping of the panels.

Benson, David K. (Golden, CO); Potter, Thomas F. (Denver, CO)

1992-01-01T23:59:59.000Z

315

A Plastic for Thermal Insulation  

Science Journals Connector (OSTI)

... ft. per in. thickness per 1° F. difference of temperature, so that its insulation properties compare very favourably with slab-cork (0-25 B.TH.U.), glass ... tenth that of slab-cork. This makes it of considerable interest in connexion with thermal insulation during transport. Isoflex is non-porous and non-absorbent, with the result that its ...

1941-04-26T23:59:59.000Z

316

New Technique in Insulation Testing  

Science Journals Connector (OSTI)

... THE new 'Megger' insulation tester, series 3, mark 3, manufactured by Evershed and Vignoles, Ltd., incorporates ... torque to the generator and provides remarkably smooth and consistent operation. In addition to the insulation testing range, the instrument operates over a continuity range 0-100 ohms with a ...

1960-10-22T23:59:59.000Z

317

The Insulation of Electric Machines  

Science Journals Connector (OSTI)

... the necessity of high potential differences have within recent years quite altered our ideas about insulation. Electrical engineers have come to view the subject from a different standpoint on account ... exceeding, their working limits of temperature, and the futility of baking to obtain temporary insulation unless moisture be permanently excluded. When dealing with the influence of brush discharge mention ...

ERNEST WILSON

1905-06-15T23:59:59.000Z

318

DOE Zero Energy Ready Home: Montlake Modern - Seattle, Washington...  

Energy Savers [EERE]

ft2 custom home has 6-inch SIP walls, a 12-inch SIP roof, an R-28 ICF-insulated foundation slab edge with R-20 rigid foam under the slab; an air-to-water heat pump plus...

319

Building America Whole-House Solutions for New Homes: CDC Realty Inc., Tucson, Arizona  

Broader source: Energy.gov [DOE]

Case study of CDC Realty Inc. who worked with Building America research partner Building Science Corporation to design HERS-54 homes with ducts in insulated attics, solar water heating, tight air sealing, and rigid foam exterior sheathing.

320

Building America Whole-House Solutions for New Homes: Urbane Homes, Louisville, Kentucky  

Broader source: Energy.gov [DOE]

Case study of Urbane Homes who worked with Building America research partner NAHBRC to build HERS-57 homes with rigid foam insulated slabs and foundation walls, advanced framed walls, high-efficiency heat pumps, and ducts in conditioned space.

Note: This page contains sample records for the topic "rigid foam insulation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Excavationless Exterior Foundation Insulation Exploratory  

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

Excavationless Exterior Foundation Excavationless Exterior Foundation Insulation Exploratory Study NorthernSTAR Building America Team Garrett Mosiman Technical Approach The project begins with the concept of an "excavationless" exterior foundation insulation upgrade that is cost-competitive with current methods, and involves little impact to existing landscape and site features. Process: 1. Literature review to establish the building science case for the advantages of exterior foundation insulation vs. interior insulation 2. Presentation and analysis of two exterior, full-excavation exterior insulation upgrades to establish a base case for costs 3. Survey of five typical twin-cities neighborhoods to categorize and quantify typical obstructions 4. Web-based search to identify available materials and technologies that have

322

Types of Insulation | Department of Energy  

Energy Savers [EERE]

-- into insulation systems that can include a variety of backings, such as kraft paper, plastic film, polyethylene bubbles, or cardboard, as well as thermal insulation materials....

323

Solar Decathlon Technology Spotlight: Structural Insulated Panels...  

Energy Savers [EERE]

Solar Decathlon Technology Spotlight: Structural Insulated Panels Solar Decathlon Technology Spotlight: Structural Insulated Panels September 20, 2011 - 7:13am Addthis These...

324

Capillary Flow of Oil in a Single Foam Microchannel  

Science Journals Connector (OSTI)

When using appropriate surfactants, oil and aqueous foam can be intimately mixed without the foam being destroyed. In this Letter, we show that a foam, initially free of oil, can draw an oil drop under the action of capillary forces and stretch it through the aqueous network. We focus on the suction of oil by a single horizontal foam channel, known as a Plateau border. In such confined channels, imbibition dynamics are governed by a balance between capillarity and viscosity. Yet, the scaling law for our system differs from that of classical imbibition in porous media such as aqueous foam. This is due to the particular geometry of the liquid channels: Plateau borders filled with foaming solution are always concave whereas they can be convex or flat when filled with oil. Finally, the oil slug, confined in the Plateau border, fragments into droplets following a film breakup.

Keyvan Piroird and Élise Lorenceau

2013-12-04T23:59:59.000Z

325

Enhancement of Energy Absorption in Syntactic Foams by Nanoclay Incorporation for Sandwich Core Applications  

Science Journals Connector (OSTI)

Syntactic foams are closed pore foams fabricated by the mechanical mixing of hollow glass particles in a matrix resin. The present study deals with change in compressive properties of syntactic foams due to th...

Nikhil Gupta; Rahul Maharsia

326

Joining of aluminium structures with aluminium foams  

SciTech Connect (OSTI)

The aim of this work is the evaluation of new construction elements for applications in transportation industry which are based on new designs incorporating commonly applied aluminium structures and aluminium foams. The work includes the characterization of the joining process, the joining mechanism and the mechanical properties of the joining zone. A testing method for the joints is developed which is based on a common tensile test in order to evaluate the influence of the main laser welding parameters on the toughness of the joints and to afford a comparison between laser beam welding and gluing process. The analysis of the joining mechanism is investigated with the help of metallographic studies. In addition, the energy absorption properties of aluminium hollows filled and joined with foam structures are characterized.

Burzer, J.; Bernard, T.; Bergmann, H.W. [Univ. of Bayreuth (Germany). Inst. for Materials Research

1998-12-31T23:59:59.000Z

327

Military housing foam application and analysis  

SciTech Connect (OSTI)

Sandia and Forest City have established a Cooperative Research and Development Agreement (CRADA), the partnership provides a unique opportunity to take technology research and development from demonstration to application in sustainable communities. This project consists of two activities conducted in Hawaii that focus on performance, integration and application of energy saving technologies. Hawaii has many energy challenges, making this location an excellent testbed for these activities. Under this project, spray foam technology was applied at military housing on Oahu and the consumption data collected. A cost benefit and operational analysis of the foam was completed. The second phase of this project included design, integration, and analysis of photovoltaic systems at a military community on Oahu. This phase of the project was conducted as part of Forest City's second Solar America Showcase Award.

Torres, J. J.

2012-03-01T23:59:59.000Z

328

Design of composite plastic foams for improved cushioning  

E-Print Network [OSTI]

. As shown in Appendix A, the three test foams for 28 this research are all nonlinear. Expanded polystyrene is a tangent-type material; polyurethane and polyethylene are anomalous-type materials. Tangent Type Anomalous Type U) (D U) Linear Type... group resins (polyester or polyether) . Poly- urethane foams are used frequently as cushioning materials because of their extremely resilient properties. For flexible foams, the polyols are primarily long- chain polyoxypropylene diols, with a small...

Eskew, James Oliver

1989-01-01T23:59:59.000Z

329

Highly Insulating Windows - Publ  

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

Highly Insulating Windows - Publications Future Advanced Windows for Zero-Energy Homes, J. Apte, D. Arasteh, J. Huang, 2003 ASHRAE Annual Meeting, 2002 Nine representative window products are examined in eight representative U.S. climates. Annual energy and peak demand impacts are investigated. We conclude that a new generation of window products is necessary for zero-energy homes if windows are not to be an energy drain on these homes. Performance Criteria for Residential Zero Energy Windows, D. Arasteh, H. Goudey, J. Huang, C. Kohler, R. Mitchell, 2006, submitted to ASHRAE Through the use of whole house energy modeling, typical efficient products are evaluated in five US climates and compared against the requirements for ZEHs. Products which meet these needs are defined as a function of climate.

330

Multiple layer insulation cover  

DOE Patents [OSTI]

A multiple layer insulation cover for preventing heat loss in, for example, a greenhouse, is disclosed. The cover is comprised of spaced layers of thin foil covered fabric separated from each other by air spaces. The spacing is accomplished by the inflation of spaced air bladders which are integrally formed in the cover and to which the layers of the cover are secured. The bladders are inflated after the cover has been deployed in its intended use to separate the layers of the foil material. The sizes of the material layers are selected to compensate for sagging across the width of the cover so that the desired spacing is uniformly maintained when the cover has been deployed. The bladders are deflated as the cover is stored thereby expediting the storage process and reducing the amount of storage space required.

Farrell, James J. (Livingston Manor, NY); Donohoe, Anthony J. (Ovid, NY)

1981-11-03T23:59:59.000Z

331

Black Mountain Insulation | Open Energy Information  

Open Energy Info (EERE)

Insulation Insulation Jump to: navigation, search Name Black Mountain Insulation Place United Kingdom Sector Carbon Product UK-based manufacturer of sheeps wool insulation which has a low carbon footprint than traditional glassfiber insulation. Website http://www.blackmountaininsula References Black Mountain Insulation Website[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Black Mountain Insulation is a company located in United Kingdom. It was formerly known as Ochre Natural Insulation Company. [2] References ↑ "Black Mountain Insulation Website" ↑ http://www.companiesintheuk.co.uk/ltd/black-mountain-insulation Retrieved from "http://en.openei.org/w/index.php?title=Black_Mountain_Insulation&oldid=391648

332

Method of preparation of removable syntactic foam  

DOE Patents [OSTI]

Easily removable, environmentally safe, low-density, syntactic foams are disclosed which are prepared by mixing insoluble microballoons with a solution of water and/or alcohol-soluble polymer to produce a pourable slurry, optionally vacuum filtering the slurry in varying degrees to remove unwanted solvent and solute polymer, and drying to remove residual solvent. The properties of the foams can be controlled by the concentration and physical properties of the polymer, and by the size and properties of the microballoons. The suggested solute polymers are non-toxic and soluble in environmentally safe solvents such as water or low-molecular weight alcohols. The syntactic foams produced by this process are particularly useful in those applications where ease of removability is beneficial, and could find use in packaging recoverable electronic components, in drilling and mining applications, in building trades, in art works, in the entertainment industry for special effects, in manufacturing as temporary fixtures, in agriculture as temporary supports and containers and for delivery of fertilizer, in medicine as casts and splints, as temporary thermal barriers, as temporary protective covers for fragile objects, as filters for particulate matter, which matter may be easily recovered upon exposure to a solvent, as in-situ valves (for one-time use) which go from maximum to minimum impedance when solvent flows through, and for the automatic opening or closing of spring-loaded, mechanical switches upon exposure to a solvent, among other applications.

Arnold, Jr., Charles (Albuquerque, NM); Derzon, Dora K. (Albuquerque, NM); Nelson, Jill S. (Albuquerque, NM); Rand, Peter B. (Albuquerque, NM)

1995-01-01T23:59:59.000Z

333

Fabrication and properties of syntactic magnesium foams  

SciTech Connect (OSTI)

Syntactic magnesium foams which consist of thin-walled hollow alumina spheres embedded in a magnesium matrix were fabricated by infiltrating a three-dimensional array of hollow spheres with a magnesium melt by using a gas pressure-assisted casting technique. The resulting composite contains closed cells of homogeneous and isotropic morphology. The densities of the syntactic magnesium foams were between 1.0 and 1.4 g/cm{sup 3}. The densities were controlled by variations in the bulk density of the hollow spheres with the volume fraction of spheres kept constant at approximately 63%. Compressive deformation characteristics of the composites were evaluated with respect to the influence of matrix strength and sphere wall thickness on characteristic variables such as compressive strength, plateau stress and energy absorption efficiency. Differences in the strength of the magnesium-based matrix materials investigated (cp-Mg, AM20, AM50, AZ91) had little influence on the compressive strength of the syntactic foam. However, an increasing relative wall thickness of the hollow ceramic spheres led to a significant strength enhancement. In all cases the ratio between compressive and plateau strength rose with increasing composite strength resulting in decreasing energy absorption efficiency.

Hartmann, M.; Reindel, K.; Singer, R.F. [Univ. of Erlangen (Germany). Dept. of Material Science

1998-12-31T23:59:59.000Z

334

Animating Non-Rigid Bodies Using Motion Capture.  

E-Print Network [OSTI]

??Simulating the motion of a non-rigid body under external forces is a difficult problem because of the complexity and flexibility of the non-rigid geometry and… (more)

Long, Jie

2013-01-01T23:59:59.000Z

335

Geometry and foams: 2D dynamics and 3D statics  

Science Journals Connector (OSTI)

We discuss the implications of the classical Gauss-Bonnet formula to foam in two and three dimensions. For a two-dimensional foam it gives a generalization of the von Neumann law for the coarsening of foams to curved surfaces. As a consequence of this we find that the stability properties of stationary bubbles of such a froth depend on the Gaussian curvature of the surface. For three-dimensional foam we find a relation between the average Gaussian curvature of a soap film and the average number of vertices for each face.

Joseph E. Avron and Dov Levine

1992-07-06T23:59:59.000Z

336

Sticky foam as a less-than-lethal technology  

SciTech Connect (OSTI)

Sandia National Labs (SNL) in 1994 completed a project funded by the National Institute of Justice (NIJ) to determine the applicability of sticky foam for correctional applications. Sticky foam is an extremely tacky, tenacious material used to block, entangle, and impair individuals. The NIJ project developed a gun capable of firing multiple shots of sticky foam, tested the gun and sticky foam effectiveness on SNL volunteers acting out prison and law enforcement scenarios, and had the gun and sticky foam evaluated by correctional representatives. Based on the NIJ project work, SNL supported the Marine Corps Mission, Operation United Shield, with sticky foam guns and supporting equipment to assist in the withdrawal of UN Peacekeepers from Somalia. Prior to the loan of the equipment, the Marines were given training in sticky foam characterization, toxicology, safety issues, cleanup and waste disposal, use limitations, use protocol and precautions, emergency facial clean-up, skin cleanup, gun filling, targeting and firing, and gun cleaning. The Marine Corps successfully used the sticky foam guns as part of that operation. This paper describes these recent developments of sticky foam for non-lethal uses and some of the lessons learned from scenario and application testing.

Scott, S.H.

1996-12-31T23:59:59.000Z

337

Measuring the Thermal Conductivity of Irradiated Foam-Type Insulation Materials  

Science Journals Connector (OSTI)

The development of a flight-qualified nuclear-rocket propulsion system has progressed rapidly during the past three years. Space missions requiring this propulsion system are being evaluated and planned. The r...

E. T. Smith; R. E. Miller

1967-01-01T23:59:59.000Z

338

Durability of Foam Insulation for LH2 Fuel Tanks of Future Subsonic Transports  

Science Journals Connector (OSTI)

The potential short-supply of petroleum-based fuels has led to activities by NASA to establish technical characteristics of air transportation systems that would use hydrogen-fueled aircraft. These activities ...

E. L. Sharpe; R. G. Helenbrook

1979-01-01T23:59:59.000Z

339

Weatherability studies on external insulation thermal system of expanded polystyrene board, polystyrene granule and polyurethane foam  

Science Journals Connector (OSTI)

Atmospheric exposure tests including two experimental stages of high temperature-spraying water cycle and heating-refrigeration cycle were carried out on three currently used ETIS of expanded polystyrene (EPS) bo...

Xiuqin Yin ???; Huiqiang Li; Haitao Bo…

2010-12-01T23:59:59.000Z

340

Potassium geopolymer foams made with silica fume pore forming agent for thermal insulation  

Science Journals Connector (OSTI)

Porous potassium based geopolymers with a mutli-scale porosity were synthesized. Silica fume is introduced as an additive to the geopolymer formulation. The free silicon contained inside this silica fume is ox...

Joseph Henon; Arnaud Alzina; Joseph Absi…

2013-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "rigid foam insulation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

E-Print Network 3.0 - aluminium foam fitted Sample Search Results  

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

aluminium foam under either... -cell 6101 aluminium foam in relation to its fracture ... Source: Groningen, Rijksuniversiteit - Centre for Ecological and Evolutionary...

342

An Investigation and Characterization of Metal Foam Filled Double-Pipe Heat Exchangers.  

E-Print Network [OSTI]

??The effect of using metal foams in double-pipe heat exchangers is investigated in this work. The advantages and drawbacks of using metal foams in these… (more)

Chen, Xi

2014-01-01T23:59:59.000Z

343

Exterior Insulation and Overclad Retrofits  

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

Exterior Insulation & Overclad Exterior Insulation & Overclad Retrofits Residential Energy Efficiency Stakeholder Meeting March 2, 2012 - Austin, TX Residential Energy Efficiency Stakeholder Meeting March 2, 2012 | Austin, TX 2  Incredible practical experience:  New construction - nearly a century  Retrofit applications - many decades Exterior Insulation Residential Energy Efficiency Stakeholder Meeting March 2, 2012 | Austin, TX 3 1980s ON - a "weird" builder Residential Energy Efficiency Stakeholder Meeting March 2, 2012 | Austin, TX 4 1990s ON - a "good" builder Residential Energy Efficiency Stakeholder Meeting March 2, 2012 | Austin, TX 5 2000s ON - a "typical" builder Residential Energy Efficiency Stakeholder Meeting March 2, 2012 | Austin, TX 6

344

Non-Rigid Matching Tat-Jun Chin  

E-Print Network [OSTI]

-rigid "keystoning" (correcting projector output) in projector-camera systems. ­ Non-rigid structure from motion (can Matching Using Shape Context, PAMI 2005. #12;Typical pipeline Input images Feature detection and matching ­ How non-rigid is it? · Conclusions #12;Typical pipeline Input images Feature detection and matching

Carneiro, Gustavo

345

STATE OF CALIFORNIA INSULATION STAGE CHECKLIST  

E-Print Network [OSTI]

STATE OF CALIFORNIA INSULATION STAGE CHECKLIST CEC-CF-6R-ENV-22 (Revised 05/12) CALIFORNIA ENERGY COMMISSION INSTALLATION CERTIFICATE CF-6R-ENV-22 Quality Insulation Installation (QII) - Insulation Stage be insulated in a manner that resists thermal bridging of the assembly separating conditioned from

346

Chromatin insulators: lessons from the fly  

E-Print Network [OSTI]

Chromatin insulators: lessons from the fly B.V.Gurudatta and Victor G.Corces Abstract Chromatin insulators are DNA^protein complexes with broad functions in nuclear biology. Drosophila has at least five different types of insulators; recent results suggest that these different insulators share some components

Corces, Victor G.

347

Insulator/Chern-insulator transition in the Haldane model T. Thonhauser and David Vanderbilt  

E-Print Network [OSTI]

Insulator/Chern-insulator transition in the Haldane model T. Thonhauser and David Vanderbilt properties of the Haldane model as the system undergoes its transition from the normal-insulator to the Chern-insulator phase. We find that the density matrix has expo- nential decay in both insulating phases, while having

Vanderbilt, David

348

Radio-transparent multi-layer insulation for radiowave receivers  

SciTech Connect (OSTI)

In the field of radiowave detection, enlarging the receiver aperture to enhance the amount of light detected is essential for greater scientific achievements. One challenge in using radio transmittable apertures is keeping the detectors cool. This is because transparency to thermal radiation above the radio frequency range increases the thermal load. In shielding from thermal radiation, a general strategy is to install thermal filters in the light path between aperture and detectors. However, there is difficulty in fabricating metal mesh filters of large diameters. It is also difficult to maintain large diameter absorptive-type filters in cold because of their limited thermal conductance. A technology that maintains cold conditions while allowing larger apertures has been long-awaited. We propose radio-transparent multi-layer insulation (RT-MLI) composed from a set of stacked insulating layers. The insulator is transparent to radio frequencies, but not transparent to infrared radiation. The basic idea for cooling is similar to conventional multi-layer insulation. It leads to a reduction in thermal radiation while maintaining a uniform surface temperature. The advantage of this technique over other filter types is that no thermal links are required. As insulator material, we used foamed polystyrene; its low index of refraction makes an anti-reflection coating unnecessary. We measured the basic performance of RT-MLI to confirm that thermal loads are lowered with more layers. We also confirmed that our RT-MLI has high transmittance to radiowaves, but blocks infrared radiation. For example, RT-MLI with 12 layers has a transmittance greater than 95% (lower than 1%) below 200 GHz (above 4 THz). We demonstrated its effects in a system with absorptive-type filters, where aperture diameters were 200 mm. Low temperatures were successfully maintained for the filters. We conclude that this technology significantly enhances the cooling of radiowave receivers, and is particularly suitable for large-aperture systems. This technology is expected to be applicable to various fields, including radio astronomy, geo-environmental assessment, and radar systems.

Choi, J. [Korea University, Anam-dong Seongbuk-gu, Seoul 136-713 (Korea, Republic of)] [Korea University, Anam-dong Seongbuk-gu, Seoul 136-713 (Korea, Republic of); Ishitsuka, H. [Department of Particle and Nuclear Physics, School of High Energy Accelerator Science, The Graduate University for Advanced Studies (SOKENDAI), Shonan Village, Hayama, Kanagawa 240-0193 (Japan)] [Department of Particle and Nuclear Physics, School of High Energy Accelerator Science, The Graduate University for Advanced Studies (SOKENDAI), Shonan Village, Hayama, Kanagawa 240-0193 (Japan); Mima, S. [Terahertz Sensing and Imaging Team, Terahertz-wave Research Group, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan)] [Terahertz Sensing and Imaging Team, Terahertz-wave Research Group, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan); Oguri, S., E-mail: shugo@post.kek.jp [Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Oho, Tsukuba, Ibaraki 305-0801 (Japan); Takahashi, K. [Terahertz Sensing and Imaging Team, Terahertz-wave Research Group, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan) [Terahertz Sensing and Imaging Team, Terahertz-wave Research Group, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan); Department of Physics, Tohoku University, Sendai, Miyagi 980-8578 (Japan); Tajima, O. [Department of Particle and Nuclear Physics, School of High Energy Accelerator Science, The Graduate University for Advanced Studies (SOKENDAI), Shonan Village, Hayama, Kanagawa 240-0193 (Japan) [Department of Particle and Nuclear Physics, School of High Energy Accelerator Science, The Graduate University for Advanced Studies (SOKENDAI), Shonan Village, Hayama, Kanagawa 240-0193 (Japan); Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Oho, Tsukuba, Ibaraki 305-0801 (Japan)

2013-11-15T23:59:59.000Z

349

2658 heat insulation [n] (1)  

Science Journals Connector (OSTI)

constr. (1. Protection against cold provided by cold-shielding materials in outer walls of a building to conserve heat and save energy. 2. In English, the generic term thermal insulation is used for ...

2010-01-01T23:59:59.000Z

350

Insulators for Switchgear and Busbars  

Science Journals Connector (OSTI)

... export them abroad. They now supply 132 kv. cylindrical type switchgear insulators for the substations of the latest section of the British grid. The disadvantage of the wide base ...

1932-04-23T23:59:59.000Z

351

Insulation For Earth And Space  

Science Journals Connector (OSTI)

According to National Aeronautics & Space Administration scientist Mary Ann B. Meador, before sending people or larger vehicles to Mars, scientists must develop insulating materials to counter the planet’s exotic environment. ...

LAUREN WOLF

2012-09-16T23:59:59.000Z

352

Variable pressure thermal insulating jacket  

DOE Patents [OSTI]

A device for controlled insulation of a thermal device is disclosed. The device includes a thermal jacket with a closed volume able to be evacuated to form an insulating jacket around the thermal source. A getter material is in communication with the closed volume of the thermal jacket. The getter material can absorb and desorb a control gas to control gas pressure in the volume of the thermal jacket to control thermal conductivity in the thermal jacket. 10 figs.

Nelson, P.A.; Malecha, R.F.; Chilenskas, A.A.

1994-09-20T23:59:59.000Z

353

Fully synthetic taped insulation cables  

DOE Patents [OSTI]

A high voltage oil-impregnated electrical cable with fully polymer taped insulation operable to 765 kV. Biaxially oriented, specially processed, polyethylene, polybutene or polypropylene tape with an embossed pattern is wound in multiple layers over a conductive core with a permeable screen around the insulation. Conventional oil which closely matches the dielectric constant of the tape is used, and the cable can be impregnated after field installation because of its excellent impregnation characteristics.

Forsyth, Eric B. (Brookhaven, NY); Muller, Albert C. (Center Moriches, NY)

1984-01-01T23:59:59.000Z

354

Foams As Viewed by Small-Angle Neutron Scattering  

Science Journals Connector (OSTI)

Foams As Viewed by Small-Angle Neutron Scattering ... For wet foams, we met other difficulties, common to any strongly scattering system:? a part of the scattered beam is collected in the central cells along with the transmitted beam; this can spoil the transmission measurements. ...

Monique A. V. Axelos; François Boué

2003-07-04T23:59:59.000Z

355

Potpourri of Los Alamos National Laboratory foam efforts  

SciTech Connect (OSTI)

This presentation provides an update on microcellular foam research efforts at Los Alamos. Topics include the influence of pressure on the phase separation of poly(4-methyl-1-pentene) from organic solution, a new concept of phase diagrams, physical testing of foams, and recent emulsion polymerization results.

Williams, J.M.; Wilkerson, M.H.; Wrobleski, D.A.

1986-01-01T23:59:59.000Z

356

Recovery of flexible polyurethane foam from shredder residue.  

SciTech Connect (OSTI)

Argonne National Laboratory has developed a patented, continuous process for the recovery of flexible polyurethane foam (PUF) from auto shredder residue (ASR). To test the process, Argonne researchers conceived of, designed, and built a continuous foam washing and drying system that was pilot-tested at a shredder facility for six months. Economic analysis of the process, using manufacturers' quotes and operating data from Argonne's pilot plant, indicates a payback of less than two years for a plant producing about 1,000 ton/yr of foam. Samples of clean foam were shipped to three major foam reprocessors; all three indicated that the quality of the PUF recovered by the Argonne process met their requirements. Tests of the recovered foam by an independent testing laboratory showed that the recycled foam met the specifications for several automotive applications, including carpet padding, headliner, and sound-suppression support materials. Recovery of foam reduces the mass and the volume of material going to the landfill by about 5% and 30%, respectively. Annually, recovery will save about 1.2 x 10{sup 12} Btu of energy, cut the amount of solid waste being landfilled by about 150,000 tons, and eliminate the emission of about 250 tons of volatile organic compounds (VOCs) into the air.

Daniels, E. J.; Jody, b. J.

1999-06-29T23:59:59.000Z

357

Development of Foamed Emulsion Bioreactor for Air Pollution Control  

E-Print Network [OSTI]

Development of Foamed Emulsion Bioreactor for Air Pollution Control Eunsung Kan, Marc A. Deshusses used bioreactors for air pollution control. © 2003 Wiley Periodicals, Inc. Biotechnol Bioeng 84: 240­244, 2003. Keywords: VOC control; biofilter; air pollution control; toluene; biologically activated foam

358

TEMPERATURE-GRADIENT INCUBATOR FOR DETERMINING THE TEMPERATURE RANGE OF GROWTH OF MICROORGANISMS  

Science Journals Connector (OSTI)

...temperatures at each end, and with insulation to prevent heat transfer...of compressed glass fiber. Insulation for the sides is rigid polyure...Centi- meter scale. thane foam poured in situ and permanently...sterilization, the top and side insulation, as well as heaters, thermoregula...

R. Paul Elliott

1963-04-01T23:59:59.000Z

359

CONTROLLING RODENTS IN COMMERCIAL POULTRY FACILITIES  

E-Print Network [OSTI]

. Most common types of insulation including rigid foam and fiberglass are susceptible to damage in and around livestock and farm facilities. Enclosed and insulated commercial poultry facilities provide ideal activities. Norway rats and large populations of mice are particularly destructive to building insulation

Ginzel, Matthew

360

Parameters of construction for applications of metal foams  

SciTech Connect (OSTI)

Foamed parts must be bonded to other components in order to be able to use them. In practice, it is not possible to limit applications to merely foaming out parts, whereby the framework construction can receive the connection elements (links). Therefore, the assembly of foamed parts requires to search for suitable detachable joint connections and to quantify the durability of them. To reach this goal, the connection pull-out strength is to be determined for the widest variety of links. Because of the required higher processing accuracies, the thermal behavior of components is becoming more and more important for practical applications. This also applies to sandwich composite materials with metal foam. Of particular interest is the interrelationship between thermal deformations and the structure of the sandwich plate. Factors such as cover sheet material and thickness, plate thickness and foam density play an important roll in this relationship.

Neugebauer, R.; Hipke, T. [Fraunhofer Inst. for Machine Tools and Forming Technologies, Chemnitz (Germany)

1998-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "rigid foam insulation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Complex foamed aluminum parts as permanent cores in aluminum castings  

SciTech Connect (OSTI)

The feasibility of complex shaped aluminum foam parts as permanent cores in aluminum castings has been investigated. The foamed samples were prepared by injection of the foam into sand molds. It turned out that sound castings can be produced if the foam core is properly preheated and/or surface treated before casting. The effect of the foam core on the performance of the casting was evaluated by in compression testing and by measuring structural damping. The gain in the related properties turned out to be much higher than the weight increase of the casting due to the presence of the core. The weight increase may be partially offset through a reduction of the wall-thickness of the shell.

Simancik, F. [Inst. of Materials and Machine Mechanics, Bratislava (Slovakia); Schoerghuber, F. [Illichmann GmbH, Altmuenster (Austria)

1998-12-31T23:59:59.000Z

362

Engineering Aspects of Heat Transfer in Multilayer Reflective Insulation and Performance of NRC Insulation  

Science Journals Connector (OSTI)

All types of high-performance insulation, often referred to as “superinsulation,” ... Carbide Corporation in October, 1958, or the insulation proposed and tested in 1951 by P. ... D. Little, Inc., or the NRC insulation

M. P. Hnilicka

1960-01-01T23:59:59.000Z

363

Typical Clothing Ensemble Insulation Levels for Sixteen Body Parts  

E-Print Network [OSTI]

Thermal Comfort.1994 CLO Insulation Levels For Sixteen Bodya mesh arm chair whose insulation level was measured. FigureExperimental Conditions. CLO Insulation Levels For Sixteen

Lee, Juyoun; Zhang, Hui; Arens, Edward

2013-01-01T23:59:59.000Z

364

GROUND PLANE INSULATION FAILURE IN THE FIRST TPC SUPERCONDUCTING COIL  

E-Print Network [OSTI]

is WIUUTEO GROUND PLANE INSULATION FAILURE IN THE FIRST TPCOn August 27, 1980, an insulation failure occurred dt-ringby a failure uf ground plane insulation. ACKNOWLEDGMENTS The

Green, M.A.

2010-01-01T23:59:59.000Z

365

Rigidity Analysis for Modeling Protein Motion  

E-Print Network [OSTI]

, it is not a rigid molecule. It can move and flex in response to changes in its environment such as temperature or the 11 presence of other proteins or chemicals. The atoms in a protein are connected by bonds. The lengths and angles of these bonds are not fixed... and evaluate the likelihood of observing that conformation under the given environmental conditions. In general, a potential energy function may be expressed as a summation 12 of various terms including bond length flexing, bond angle flexing, dihedral angle...

Thomas, Shawna L.

2010-07-14T23:59:59.000Z

366

A rigid porous filter and filtration method  

SciTech Connect (OSTI)

The present invention involves a porous rigid filter comprising a plurality of concentric filtration elements having internal flow passages and forming external flow passages there between. The present invention also involves a pressure vessel containing the filter for the removal of particulate from high pressure particulate containing gases, and further involves a method for using the filter to remove such particulate. The present filter has the advantage of requiring fewer filter elements due to the high surface area- to-volume ratio provided by the filter, requires a reduced pressure vessel size, and exhibits enhanced mechanical design properties, improved cleaning properties, configuration options, modularity and ease of fabrication.

Chiang, Ta-Kuan; Straub, Douglas, Straub L.; Dennis, Richard A.

1998-12-01T23:59:59.000Z

367

Pyrophoric metal-carbon foam composites and methods of making the same  

DOE Patents [OSTI]

A method for creating a pyrophoric material according to one embodiment includes thermally activating a carbon foam for creating micropores therein; contacting the activated carbon foam with a liquid solution comprising a metal salt for depositing metal ions in the carbon foam; and reducing the metal ions in the foam to metal particles. A pyrophoric material in yet another embodiment includes a pyrophoric metal-carbon foam composite comprising a carbon foam having micropores and mesopores and a surface area of greater than or equal to about 2000 m.sup.2/g, and metal particles in the pores of the carbon foam. Additional methods and materials are also disclosed.

Gash, Alexander E. (Brentwood, CA); Satcher, Jr., Joe H. (Patterson, CA); Simpson, Randall L. (Livermore, CA); Baumann, Theodore F. (Discovery Bay, CA); Worsley, Marcus A. (Belmont, CA)

2012-05-08T23:59:59.000Z

368

Experimental Investigation of the Effective Foam Viscosity in Unsaturated Porous Media  

SciTech Connect (OSTI)

Foam has the potential to effectively carry and distribute either aqueous or gaseous amendments to the deep vadose zone for contaminant remediation. However, the transport of foam in porous media is complicated because flow characteristics such as the effective viscosity are affected not only by foam properties but also by the sediment properties and flow conditions. We determined the average effective foam viscosity via a series of laboratory experiments and found that the effective foam viscosity increased with the liquid fraction in foam, the injection rate, and sediment permeability. These impacts are quantified with an empirical expression, which is further demonstrated with data from literature. The results show that the liquid fraction in foam and sediment permeability are two primary factors affecting effective foam viscosity. These results suggest that, when foam is used in deep vadose zone remediation, foam flow will not suffer from gravitational drainage and can distribute amendments uniformly in heterogeneous sediments.

Zhang, Z. F.; Zhong, Lirong; White, Mark D.; Szecsody, James E.

2012-11-01T23:59:59.000Z

369

High-temperature zirconia insulation and method for making same  

DOE Patents [OSTI]

The present invention is directed to a highly pure, partially stabilized, fibrous zirconia composite for use as thermal insulation in environments where temperatures up to about 2,000 C are utilized. The composite of the present invention is fabricated into any suitable configuration such as a cone, cylinder, dome or the like by vacuum molding an aqueous slurry of partially stabilized zirconia fibers into a desired configuration on a suitably shaped mandrel. The molded fibers are infiltrated with zirconyl nitrate and the resulting structure is then dried to form a rigid structure which may be removed and placed in a furnace. The structure is then heated in air to a temperature of about 600 C for driving off the nitrate from the structure and for oxidizing the zirconyl ion to zirconia. Thereafter, the structure is heated to about 950 to 1,250 C to fuse the zirconia fibers at their nexi in a matrix of zirconia. The composite produced by the present invention is self-supporting and can be readily machined to desired final dimensions. Additional heating to about 1,800 to 2,000 C further improves structural rigidity.

Wrenn, G.E. Jr.; Holcombe, C.E. Jr.; Lewis, J. Jr.

1988-05-10T23:59:59.000Z

370

Process for making ceramic insulation  

DOE Patents [OSTI]

A method is provided for producing insulation materials and insulation for high temperature applications using novel castable and powder-based ceramics. The ceramic components produced using the proposed process offers (i) a fine porosity (from nano-to micro scale); (ii) a superior strength-to-weight ratio; and (iii) flexibility in designing multilayered features offering multifunctionality which will increase the service lifetime of insulation and refractory components used in the solid oxide fuel cell, direct carbon fuel cell, furnace, metal melting, glass, chemical, paper/pulp, automobile, industrial heating, coal, and power generation industries. Further, the ceramic components made using this method may have net-shape and/or net-size advantages with minimum post machining requirements.

Akash, Akash (Salt Lake City, UT); Balakrishnan, G. Nair (Sandy, UT)

2009-12-08T23:59:59.000Z

371

AEROSPACE TECHNOLOGY REVIEW FOR LBL WINDOW/PASSIVE SOLAR PROGRAM FINAL REPORT  

E-Print Network [OSTI]

L. L. Sparks, I'Cryogenic Foam Insulations, Polyurethane and21) "Low Temperature Insulations - Foams and Composites ",Control Techniques, Insulation Materials, Foams, Fibres,

Viswanathan, R.

2011-01-01T23:59:59.000Z

372

ENERGY EFFICIENT BUILDINGS PROGRAM. CHAPTER FROM ENERGY AND ENVIRONMENT DIVISION ANNUAL REPORT 1978  

E-Print Network [OSTI]

as urea-formaldehyde foam insulation, plywood, and particleand urea- formaldehyde foam insulation. It is apparent thatand urea-formaldehyde insulation foam; also generated by

Sonderegger, R. C.

2011-01-01T23:59:59.000Z

373

IMPACT OF REDUCED INFILTRATION AND VENTILATION ON INDOOR AIR QUALITY IN RESIDENTIAL BUILDINGS  

E-Print Network [OSTI]

urea-formaldehyde foam insulation, and radon from variousand urea-formaldehyde foam insulation have recently otherformaldehyde (UF) based foam insulation materials because of

Hollowell, Craig D.

2011-01-01T23:59:59.000Z

374

Health and Safety Guide for Home Performance Contractors  

E-Print Network [OSTI]

parts A and B on-site, foam insulation installers follow thenon-conductive. Spray foam insulation should never be usedsealants, thermal insulation (wool felt, foam rubber, and

Stratton, Chris

2014-01-01T23:59:59.000Z

375

Deep Energy Retrofits - Eleven California Case Studies  

E-Print Network [OSTI]

includes 4” of exterior foam insulation on walls and roof,connections with spray foam insulation, which also acts asand placement of exterior foam insulation. This strategy

Less, Brennan

2014-01-01T23:59:59.000Z

376

BUILDING VENTILATION AND INDOOR AIR QUALITY PROGRAM. CHAPTER FROM ENERGY AND ENVIRONMENT DIVISION ANNUAL REPORT 1978  

E-Print Network [OSTI]

as urea-formaldehyde foam insulation, plywood, and particleand urea- formaldehyde foam insulation. It is apparent thatand urea-formaldehyde insulation foam; also generated by

Cairns, Elton J.

2011-01-01T23:59:59.000Z

377

ENERGY AND ENVIRONMENT DIVISION ANNUAL REPORT 1978  

E-Print Network [OSTI]

as urea-formaldehyde foam insulation, plywood, and particleand urea- formaldehyde foam insulation. It is apparent thatand urea-formaldehyde insulation foam; also generated by

Cairns, E.L.

2011-01-01T23:59:59.000Z

378

Chemical Emissions of Residential Materials and Products: Review of Available Information  

E-Print Network [OSTI]

of spray polyurethane foam insulation. Some of the risks ofin spray polyurethane foam insulation. Acute effects of MDIpolyurethane foam insulation. Toluene 2,4 diisocyanate (

Willem, Henry

2010-01-01T23:59:59.000Z

379

Non-CFC vacuum alternatives for the energy-efficient insulation of household refrigerators: Design and use  

SciTech Connect (OSTI)

Energy efficiency, environmental issues, and market incentives all encourage government and industry to continue work on thin-profile vacuum insulations for domestic refrigerators and freezers (R/Fs). Vacuum insulations promise significant improvement in thermal savings over current insulations; the technical objective of one design is an R-value of better than 10 (hr-ft{sup 2}-F/Btu) in 0.1 in. thickness. If performance is improved by a factor of 10 over that of CFC-blown insulating foams, the new insulations (made without CFCs or other potentially troublesome fill gases) will change the design and improve the efficiency of refrigerators. Such changes will meet the conservation, regulatory, and market drivers now strong in developed countries and likely to increase in developing countries. Prototypes of various designs have been tested in the laboratory and in factories, and results to date confirm the good thermal performance of these thin-profile alternatives. The next step is to resolve issues of reliability and cost effectiveness. 34 refs., 4 figs.

Potter, T.F.; Benson, D.K.

1991-01-01T23:59:59.000Z

380

Foundation Insulation for Existing Homes  

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

How Do We Retrofit Tough Buildings? Foundation Insulation for Existing Homes Building America Technical Update April 29 & 30, 2013 Patrick H. Huelman Cold Climate Housing Coordinator University of Minnesota Extension Foundation Insulation for Existing Homes * Context - Focused on basements and crawlspaces. - Aimed at cold climates (Climate Zones 6 & 7). - Generally aimed at liquid active walls. * Approach - Managing risks - Current solutions & best practices - Evaluating new approaches * Primary focus is to reduce energy use by 30 to 50% with emphasis on existing homes. * Promote building science solutions using a systems engineering and integrated design approach. * "Do no harm" => must ensure that safety, health, and durability are maintained or improved.

Note: This page contains sample records for the topic "rigid foam insulation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Approximating Metal-Insulator Transitions  

E-Print Network [OSTI]

We consider quantum wave propagation in one-dimensional quasiperiodic lattices. We propose an iterative construction of quasiperiodic potentials from sequences of potentials with increasing spatial period. At each finite iteration step the eigenstates reflect the properties of the limiting quasiperiodic potential properties up to a controlled maximum system size. We then observe approximate metal-insulator transitions (MIT) at the finite iteration steps. We also report evidence on mobility edges which are at variance to the celebrated Aubry-Andre model. The dynamics near the MIT shows a critical slowing down of the ballistic group velocity in the metallic phase similar to the divergence of the localization length in the insulating phase.

C. Danieli; K. Rayanov; B. Pavlov; G. Martin; S. Flach

2014-05-06T23:59:59.000Z

382

Surface effects on the radiation response of nanoporous Au foams  

SciTech Connect (OSTI)

We report on an experimental and simulation campaign aimed at exploring the radiation response of nanoporous Au (np-Au) foams. We find different defect accumulation behavior by varying radiation dose-rate in ion-irradiated np-Au foams. Stacking fault tetrahedra are formed when np-Au foams are irradiated at high dose-rate, but they do not seem to be formed in np-Au at low dose-rate irradiation. A model is proposed to explain the dose-rate dependent defect accumulation based on these results.

Fu, E. G.; Caro, M.; Wang, Y. Q.; Baldwin, K.; Caro, A. [Materials Science in Radiation and Dynamics Extremes, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States); Zepeda-Ruiz, L. A. [Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California 94551 (United States); Bringa, E. [CONICET and Instituto de Ciencias Basicas, Universidad Nacional de Cuyo, Mendoza 5500 (Argentina); Nastasi, M. [Nebraska Center for Energy Sciences Research, University of Nebraska-Lincoln, Lincoln, Nebraska 68508 (United States)

2012-11-05T23:59:59.000Z

383

Compressive tensile and shear testing of melt-foamed aluminium  

SciTech Connect (OSTI)

For construction purposes it is utterly important to get detailed information on the possible influence of the foam thickness on the mechanical properties and on the deformation behavior of metallic foams. The effect of compressive, tensile and shear loads on aluminium foam samples has been examined with the testing methods for sandwich material as described in German and ASTM-standards. The aim is to provide more data on these mechanical properties varying the sample density and thickness. Regarding the results the most reliable material parameters as well as steps towards a relationship between the different strength parameters can be obtained.

Von Hagen, H.; Bleck, W. [Aachen Univ. of Technology (Germany). Inst. of Ferrous Metallurgy

1998-12-31T23:59:59.000Z

384

Aluminum foam, ALPORAS: The production process, properties and applications  

SciTech Connect (OSTI)

The production of foamed aluminum has long been considered difficult to realize because of such problems as the low foamability of molten metal, the varying size of cellular structures, solidification shrinkage and so on. Recently these problems have been solved by a number of researchers and some manufacturers produce foamed aluminum by their own methods. The authors have been employing a batch casting process and manufacturing foamed aluminum under the tradename ALPORAS{reg_sign} since 1986. This paper presents the manufacturing process, physical properties and some typical applications of ALPORAS.

Miyoshi, T.; Itoh, M. [Shinko Wire Co., Ltd., Amagasaki (Japan); Akiyama, S.; Kitahara, A. [Kyushu National Industrial Research Inst., Tosu (Japan). Material Engineering Dept.

1998-12-31T23:59:59.000Z

385

Insulating and sheathing materials of electric and optical cables: common test methods part 4-1: methods specific to polyethylene and polypropylene compounds – resistance to environmental stress cracking – measurement of the melt flow index – carbon black and/or mineral filler content measurement in polyethylene by direct combustion – measurement of carbon black content by thermogravimetric analysis (TGA) – assessment of carbon black dispersion in polyethylene using a microscope  

E-Print Network [OSTI]

Specifies the test methods to be used for testing polymeric insulating and sheathing materials of electric cables for power distribution and telecommunications including cables used on ships. Gives the methods for measurements of the resistance to environmental stress cracking, for wrapping test after thermal ageing in air, for measurement of melt flow index and for measurement of carbon black and/or mineral filler content, which apply to PE and PP coumpounds, including cellular compounds and foam skin for insulation.

International Electrotechnical Commission. Geneva

2004-01-01T23:59:59.000Z

386

A New Glass to Join Foam Glass Components  

Science Journals Connector (OSTI)

The European market of insulation materials is dominated by two groups of ... inorganic or organic foamy materials; typically, the insulation materials for applications above 60 °C ( ... several process plants) a...

Andrea Ventrella; Federico Smeacetto…

2010-12-01T23:59:59.000Z

387

British Standard Specification for Cable Insulation  

Science Journals Connector (OSTI)

... different types of cables and cords ; and the third, with tests for thickness of insulation and sheath, voltage, ... and sheath, voltage, insulation resistance, spark testing, tinning and armouring. The numerous tables with which the specification ...

1947-02-22T23:59:59.000Z

388

Insulation board and process of making  

DOE Patents [OSTI]

Insulation board capable of bearing a load without significant loss of insulating capacity due to compression, produced by a method wherein the board is made in compliance with specified conditions of time, temperature and pressure.

Nowobilski, Jeffert J. (Orchard Park, NY); Owens, William J. (Kenmore, NY)

1985-01-01T23:59:59.000Z

389

Thermal Insulation at Very Low Temperatures  

Science Journals Connector (OSTI)

24 September 1942 research-article Thermal Insulation at Very Low Temperatures A. H. Cooke R. A. Hull Various methods of insulation have been investigated at temperatures between and 1 degrees K. A simple suspension of artificial silk fibre...

1942-01-01T23:59:59.000Z

390

Systems of Insulation Resistance Continuous Measurement  

Science Journals Connector (OSTI)

In this chapter several methods of continuous measurement of insulation resistance in AC IT systems are described. ... source is explained. Another method of continuous insulation resistance measurement is imposi...

Piotr Olszowiec

2013-01-01T23:59:59.000Z

391

Systems of Insulation Resistance Continuous Measurement  

Science Journals Connector (OSTI)

In this chapter several methods of continuous measurement of insulation resistance in AC IT systems are described. ... source is explained. Another method of continuous insulation resistance measurement is imposi...

Piotr Olszowiec

2014-01-01T23:59:59.000Z

392

Vacuum Insulation for Windows | Department of Energy  

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

evacuated materials-so small that they are invisible-integrated with low-e-coated plastic films. The materials will have better insulation values than vacuum-insulated glass...

393

Basement Insulation Systems- Building America Top Innovation  

Broader source: Energy.gov [DOE]

This Building America Innovations profile describes Building America research on basement insulation, which identifies the wall installation methods and materials that perform best in terms of insulation and water resistance.

394

Degradation of Structural Alloys Under Thermal Insulation  

E-Print Network [OSTI]

Wet thermal insulation may actively degrade steel and stainless steel structures by general corrosion or stress-corrosion cracking. Two different mechanisms of water ingress into insulation are discussed; flooding from external sources...

McIntyre, D. R.

1984-01-01T23:59:59.000Z

395

High cycle fatigue properties of aluminium foams  

SciTech Connect (OSTI)

Fatigue lifetime measurements have been performed on foamed Al-Mg-Si wrought alloys and Al-Si cast alloys in the high cycle range using an ultrasonic resonance testing method. The porous structure of the material is described by quantitative image analysis of optical micrographs and non destructively by X-ray computer tomography. The static mechanical properties as determined by tensile, compression and bending tests in earlier studies are used for material characterization in this paper. The evaluation of the stress main curves is specified for porous structures to obtain the stiffness and the plateau strength. The influence of the surface skin on the mechanical properties as well as an oscillation behavior during lifetime measurements was studied.

Zettl, B.E.; Stanzl-Tschegg, S.E. [Univ. of Agricultural Sciences (Austria). Inst. of Meteorology and Physics; Gradinger, R. [LKR-Centre of Competence on Light Metals, Ranshofen (Austria); Degischer, H.P. [Vienna Univ. of Technology (Austria). Inst. of Material Science

1998-12-31T23:59:59.000Z

396

Modeling and simulation of power cable insulation  

Science Journals Connector (OSTI)

The use of power cables for transmission and distribution of electrical power have increased since the advent of suitable, reliable and economical polymeric insulating material; such as cross-linked polyethylene (XLPE). Power cables plays crucial role ... Keywords: cross-linked polyethylene (XLPE), imperfect insulation, local defects, lossy insulation, partial discharge (PD)

K. D. Patil; A. A. Bhole; W. Z. Gandhare

2010-02-01T23:59:59.000Z

397

OPTIMAL INSULATION DISTRIBUTION OVER A CONDUCTING BODY  

Science Journals Connector (OSTI)

......research-article Articles OPTIMAL INSULATION DISTRIBUTION OVER A CONDUCTING BODY...conducted. Over the rest a given amount of insulation is assumed to be spread. Its pointwise...surroundings. Observe that thickening of the insulation at one point involves thinning elsewhere......

MICHAEL BETWICH

1983-02-01T23:59:59.000Z

398

STATE OF CALIFORNIA ENVELOPE INSULATION; ROOFING; FENESTRATION  

E-Print Network [OSTI]

STATE OF CALIFORNIA ENVELOPE ­ INSULATION; ROOFING; FENESTRATION CEC-CF-6R-ENV-01 (Revised 08/09) CALIFORNIA ENERGY COMMISSION INSTALLATION CERTIFICATE CF-6R-ENV-01 Envelope ­ Insulation; Roofing to be checked to ensure the mandatory measures have been met. Description of Insulation 1. RAISED FLOOR Material

399

Vacuum-insulated catalytic converter  

DOE Patents [OSTI]

A catalytic converter has an inner canister that contains catalyst-coated substrates and an outer canister that encloses an annular, variable vacuum insulation chamber surrounding the inner canister. An annular tank containing phase-change material for heat storage and release is positioned in the variable vacuum insulation chamber a distance spaced part from the inner canister. A reversible hydrogen getter in the variable vacuum insulation chamber, preferably on a surface of the heat storage tank, releases hydrogen into the variable vacuum insulation chamber to conduct heat when the phase-change material is hot and absorbs the hydrogen to limit heat transfer to radiation when the phase-change material is cool. A porous zeolite trap in the inner canister absorbs and retains hydrocarbons from the exhaust gases when the catalyst-coated substrates and zeolite trap are cold and releases the hydrocarbons for reaction on the catalyst-coated substrate when the zeolite trap and catalyst-coated substrate get hot.

Benson, David K. (Golden, CO)

2001-01-01T23:59:59.000Z

400

Manufacturers Saving with Lost Foam Metal Casting | Department of Energy  

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

Manufacturers Saving with Lost Foam Metal Casting Manufacturers Saving with Lost Foam Metal Casting Manufacturers Saving with Lost Foam Metal Casting December 18, 2009 - 2:43pm Addthis Eric Barendsen Energy Technology Program Specialist, Office of Energy Efficiency and Renewable Energy What are the key facts? Metal casting was identified as one of the top 10 energy users in manufacturing. The technology represents a 20- to 25-percent reduction in production costs and uses 7 percent fewer materials than traditional processes. One example of this technology is being used by General Motors to make lightweight engine blocks for the fuel-efficient vehicles they manufacture. A government-funded effort to support development of foam metal casting helped reduce an estimated 9.4 million tons of solid waste between 1994 and 2005, which saved industry an estimated 3 trillion Btu.

Note: This page contains sample records for the topic "rigid foam insulation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Capillary flow of oil in a single foam microchannel  

E-Print Network [OSTI]

Under specific physico-chemical conditions, oil droplets are able to invade the liquid network of a foam without damaging it. We study experimentally the capillary suction of oil in a single foam channel, a Plateau border. Oil flows as an unbroken stream with a dynamics that differs from classical wicking in a capillary tube due to the deformability of the foam channel. The oil forms a long and stable liquid slug inside the Plateau border, which does not break into droplets as long as the oil is confined within the Plateau Border. Yet, destabilization occurs when oil is transferred from the Plateau border to a soap film, after the break-up of a soap film as may happen in real foams.

Piroird, Keyvan

2013-01-01T23:59:59.000Z

402

Spectroscopic diagnosis of foam z-pinch plasmas on SATURN  

Science Journals Connector (OSTI)

Solid and annular silicon aerogel and agar foams were imploded on the SATURN accelerator to study plasma initiation acceleration and stagnation. SATURN delivers 7 MA with a 50 ns rise time to these foam loads. We fielded several spectroscopic diagnostics to measureplasma parameters throughout the z-pinch discharge. A spatially resolved single frame time-gated extreme ultravioletspectrometermeasured the extent of plasma ablation off the surface of the foam. A time integrated crystal spectrometer showed that characteristicK shell radiation of silicon in the aerogel and of sulfur and sodium impurities in the agar were attenuated when the foam loads were coated with a conductive layer of gold. A time-resolved pinhole camera showed that in general the quality of the pinch implosions was poor but improved with increasing efforts to improve current continuity such as prepulse and conductive coatings.

T. J. Nash; M. S. Derzon; G. Allshouse; D. Jobe; J. Seaman; T. Gilliland; J. McGurn; J. J. MacFarlane; P. Wang

1997-01-01T23:59:59.000Z

403

Observation of ionization fronts in low density foam targets  

SciTech Connect (OSTI)

Ionization fronts have been observed in low density chlorinated foam targets and low density foams confined in gold tubes using time resolved {ital K}-shell absorption spectroscopy. The front was driven by an intense pulse of soft x-rays produced by high power laser irradiation. The density and temperature profiles inferred from the radiographs provided detailed measurement of the conditions. The experimental data were compared to radiation hydrodynamics simulations and reasonable agreement was obtained. {copyright} {ital 1999 American Institute of Physics.}

Hoarty, D. [Imperial College of Science, Technology and Medicine, London (United Kingdom)] [Imperial College of Science, Technology and Medicine, London (United Kingdom); [Radiation Physics Department, AWE Aldermaston, Reading, Berkshire (United Kingdom); Willi, O.; Barringer, L.; Vickers, C. [Imperial College of Science, Technology and Medicine, London (United Kingdom)] [Imperial College of Science, Technology and Medicine, London (United Kingdom); Watt, R. [P24, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)] [P24, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States); Nazarov, W. [Chemistry Department, University of Dundee (United Kingdom)] [Chemistry Department, University of Dundee (United Kingdom)

1999-05-01T23:59:59.000Z

404

Method of making metal-doped organic foam products  

DOE Patents [OSTI]

Organic foams having a low density and very small cell size and method for roducing same in either a metal-loaded or unloaded (nonmetal loaded) form are described. Metal-doped foams are produced by soaking a polymer gel in an aqueous solution of desired metal salt, soaking the gel successively in a solvent series of decreasing polarity to remove water from the gel and replace it with a solvent of lower polarity with each successive solvent in the series being miscible with the solvents on each side and being saturated with the desired metal salt, and removing the last of the solvents from the gel to produce the desired metal-doped foam having desired density cell size, and metal loading. The unloaded or metal-doped foams can be utilized in a variety of applications requiring low density, small cell size foam. For example, rubidium-doped foam made in accordance with the invention has utility in special applications, such as in x-ray lasers.

Rinde, James A. (Livermore, CA)

1981-01-01T23:59:59.000Z

405

Building America Whole-House Solutions for New Homes: Tindall Homes, Columbus, New Jersey  

Broader source: Energy.gov [DOE]

Case study of Tindall Homes who worked with Building America research team IBACOS to build 20 HERS-58 homes with R-49 mixed attic insulation, poly-iso foam in advanced framed walls, precast concrete basement walls with rigid foam, tight airsealing, and HRVs

406

GLOBAL RIGIDITY FOR TOTALLY NONSYMPLECTIC ANOSOV BORIS KALININ  

E-Print Network [OSTI]

GLOBAL RIGIDITY FOR TOTALLY NONSYMPLECTIC ANOSOV Zk ACTIONS BORIS KALININ AND VICTORIA SADOVSKAYA by NSF grant DMS-0140513. Supported in part by NSF grant DMS-0401014. 1 #12;GLOBAL RIGIDITY FOR TOTALLY Abstract. We consider a totally nonsymplectic (TNS) Anosov action of Zk which is either uniformly

Sadovskaya, Victoria

407

Computation of rotational energy levels of rigid asymmetric top molecules  

Science Journals Connector (OSTI)

......Computation of rotational energy levels of rigid asymmetric...Aires, Buenos Aires, Argentina * This work has been...Technical Investigations of Argentina. Department of Physics...University of Buenos Aires, Argentina. A computational method...obtaining the reduced energy values of rigid asymmetric......

A. Rachman

1965-01-01T23:59:59.000Z

408

Polynomials for crystal frameworks and the rigid unit mode spectrum  

Science Journals Connector (OSTI)

...materials, the low-energy (long wavelength...motions of rigid units, such as the SiO4 tetrahedral units in quartz. The...networks of rigid units. In both the experimental measurements and the simulations...display markedly low energy. There is now...

2014-01-01T23:59:59.000Z

409

New and Underutilized Technology: Aerogel Insulation | Department of Energy  

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

Aerogel Insulation Aerogel Insulation New and Underutilized Technology: Aerogel Insulation October 8, 2013 - 2:54pm Addthis The following information outlines key deployment considerations for aerogel insulation within the Federal sector. Benefits Aerogel insulation products displace current insulation materials. The thermal conductivity of aerogel is very low, allowing it to retain insulation properties at a much thinner thickness. Application Aerogel insulation is appropriate for deployment across piping, ducts, and within most building categories. It should be considered in building design, construction, or major renovation. Key Factors for Deployment Aerogel insulations are more expensive than typical insulations. However, they are ideal for special applications, such as translucent wall panels.

410

Magnetically insulated transmission line oscillator  

DOE Patents [OSTI]

A magnetically insulated transmission line oscillator employs self-generated magnetic fields to generate microwave energy. An anode of the oscillator includes slow-wave structures which are formed of a plurality of thin conductive vanes defining cavities therebetween, and a gap is formed between the anode and a cathode of the oscillator. In response to a pulsed voltage applied to the anode and cathode, self-generated magnetic fields arfe produced in a cross-field orientation with respect to the orientation of the electric field between the anode and the cathode. The cross-field magnetic fields insulate the flow of electrons in the gap and confine the flow of electrons within the gap.

Bacon, Larry D. (Albuquerque, NM); Ballard, William P. (Albuquerque, NM); Clark, M. Collins (Albuquerque, NM); Marder, Barry M. (Albuquerque, NM)

1988-01-01T23:59:59.000Z

411

Effects of organically modified nanoclay on cellular morphology, tensile properties, and dimensional stability of flexible polyurethane foams  

Science Journals Connector (OSTI)

Flexible polyurethane/organically modified nanoclay (organoclay) nanocomposite foams were synthesized by ... polyurethane foam sample containing 2 wt.% of nanoclay revealed clay intercalation. Furthermore, SEM im...

Reza Jahanmardi; Behrad Kangarlou…

2013-11-01T23:59:59.000Z

412

The Effect of Moisture Absorption on the Physical Properties of Polyurethane Shape Memory Polymer Foams  

E-Print Network [OSTI]

. 6 2. EXPERIMENTAL 2.1 Polyurethane foam synthesis and sample preparation Polyurethane SMP foams were prepared based on a technique developed by Dr. Thomas S. Wilson at Lawrence Livermore National Laboratory. Prepolymers were made from...

Yu, Ya-Jen

2012-07-16T23:59:59.000Z

413

Computational and Experimental Evaluation of Actuating Shape Memory Polymer Foams in the Context of Aneurysm Treatment  

E-Print Network [OSTI]

foam actuation necessitates an evaluation of potential thermal damage to nearby tissue. In the present investigation, the foam is idealized as a heat-dissipating, volumetrically static object centered in a straight tube of flowing water. Velocity...

Hahn, Edward

2010-07-14T23:59:59.000Z

414

Strain localization and cyclic damage of polyurethane foam cylinders: experimental tests and theoretical model  

E-Print Network [OSTI]

Strain localization and cyclic damage of polyurethane foam cylinders: experimental tests subject to progressive damage. The chain of springs models the strain localization, and the second series qualitative agreement with the experiments. Keywords: polyurethane foams; strain localization; cyclic damage

Boyer, Edmond

415

E-Print Network 3.0 - automatic multiple-zone rigid-body Sample...  

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

controlled articulation between rigid bodies. This not only allows for the robust simulation of a number... and Object Modeling, Physically based modeling Keywords: rigid...

416

E-Print Network 3.0 - absolutely rigid body Sample Search Results  

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

of particles; mass moments of inertia; kinetics of rigid bodies: New- ton... . Statics 3. Particle dynamics 4. Mass center (system of particles, rigid ... Source: Mench, Matthew M....

417

Superplastic foaming of titanium and Ti-6Al-4V  

SciTech Connect (OSTI)

Solid-state foaming of metals can be achieved by hot-isostatic pressing of powders in presence of argon followed by expansion of the resulting high-pressure argon bubbles at ambient pressure and elevated temperature. This foaming technique was first demonstrated by Kearns et al. for Ti-6Al-4V, but is limited by its low creep rate and ductility, which lead to early cell wall fracture. The authors address these issues by performing the foaming step under superplastic conditions. Rather than using microstructural superplasticity (requiring fine grains which are difficult to achieve in porous powder-metallurgy materials), they used transformation superplasticity, which occurs at all grain sizes by biasing with a deviatoric stress (from the pore pressure) of internal stresses (from the allotropic mismatch during thermal cycling about the allotropic temperature range). As compared to control experiments performed under isothermal creep conditions, superplastic foaming under temperature cycling of unalloyed titanium and alloyed Ti-6Al-4V led to a significantly higher pore volume fraction and higher foaming rate.

Dunand, D.C. [Northwestern Univ., Evanston, IL (United States). Dept. of Materials Science and Engineering; Teisen, J. [Swiss Federal Inst. of Tech., Zuerich (Switzerland). Dept. of Materials

1998-12-31T23:59:59.000Z

418

Types of Insulation | Department of Energy  

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

Types of Insulation Types of Insulation Types of Insulation May 30, 2012 - 11:43am Addthis In existing homes, cellulose (here) or other loose-fill materials can be installed in building cavities through holes drilled (usually) on the exterior of the house. After the installation, the holes are plugged and finish materials replaced. | Photo courtesy of Cellulose Insulation Manufacturers Association. In existing homes, cellulose (here) or other loose-fill materials can be installed in building cavities through holes drilled (usually) on the exterior of the house. After the installation, the holes are plugged and finish materials replaced. | Photo courtesy of Cellulose Insulation Manufacturers Association. Icynene plastic insulation blown into the walls of a home near Denver. Icynene fills cracks and crevices and adheres to the framing. | Photo courtesy of Paul Norton, NREL.

419

Critical insulation thickness for maximum entropy generation  

Science Journals Connector (OSTI)

Critical insulation thickness is known to refer to the insulation thickness that maximises the rate of heat transfer in cylindrical and spherical systems. The same analogy is extended to the rate of entropy generation in the present study. The possible critical insulation thickness that yields a maximum rate of entropy generation is investigated. Entropy generation is related to heat transfer through and temperature distribution within the insulation material. It is found that there exists a critical insulation thickness for maximising the rate of entropy generation that is a function of the Bi number and the surface to ambient temperature ratio. The solution of such critical thickness is formulated analytically for both cylindrical and spherical geometries. It is also found that the critical insulation thickness for the rate of entropy generation does not coincide with that for the rate of heat transfer.

Ahmet Z. Sahin

2012-01-01T23:59:59.000Z

420

Chapter One - Design and Application of Thermal Insulation  

Science Journals Connector (OSTI)

Abstract This chapter covers the minimum requirements for thermal insulation of pipework, vessels, tanks, and other equipment. It is aimed at thermal insulation usage in the oil, gas, petrochemical, and other similar industries mainly for refineries, chemical, petrochemical, and natural gas processing plants. The chapter explains the fundamental requirements for insulation systems, including insulation materials of sufficient quality and thicknesses, weatherproofing, and finishing. Also, there is discussion on the design issues related to thermal insulation, including selection of the thermal insulation system, corrosion under thermal insulation, and the general applications of insulation. In addition, the characteristics and selection of insulation and accessory materials are presented.

Alireza Bahadori

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "rigid foam insulation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Insulation and Air Sealing Products and Services | Department of Energy  

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

You are here You are here Home » Insulation and Air Sealing Products and Services Insulation and Air Sealing Products and Services May 30, 2012 - 9:52am Addthis Insulation and Air Sealing Products and Services Use the following links to get product information and locate professional services for insulation and air sealing. Product Information Cellulose Facts Cellulose Insulation Manufacturers Association Information on cellulose insulation, including technical bulletins, special reports, and video Concrete Masonry Units Concrete Homes-Portland Cement Association Describes construction methods that use concrete block systems Cotton Insulation (PDF) Build it Green Information on cotton insulation and a comparison to conventional insulation Expanded Polystyrene Molders Association

422

Impact of the insulation materials’ features on the determination of optimum insulation thickness  

Science Journals Connector (OSTI)

The optimum thickness of the building envelope insulation materials depends on a large number of ... used in the building, and specifically the insulation ones, are included in the process to calculate the optimu...

Jérôme Barrau; Manel Ibanez; Ferran Badia

2014-07-01T23:59:59.000Z

423

Aerogel Impregnated Polyurethane Piping and Duct Insulation  

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

Aerogel Impregnated Polyurethane Aerogel Impregnated Polyurethane Piping and Duct Insulation David M. Hess InnoSense LLC david.hess@innosense.us, 310-530-2011 April 4, 2013 2 | Building Technologies Office eere.energy.gov Purpose & Objectives Problem Statement: Develop an efficient insulation system that will adhere to housing duct work and pipe structures while conforming to complex geometries. New insulations must increase the R-value of existing materials and be easy to apply or retrofit to existing structures.

424

Floating insulated conductors for heating subsurface formations  

DOE Patents [OSTI]

A heating system for a subsurface formation includes a conduit located in a first opening in the subsurface formation. Three electrical conductors are located in the conduit. A return conductor is located inside the conduit. The return conductor is electrically coupled to the ends of the electrical conductors distal from the surface of the formation. Insulation is located inside the conduit. The insulation electrically insulates the three electrical conductors, the return conductor, and the conduit from each other.

Burns, David; Goodwin, Charles R.

2014-07-29T23:59:59.000Z

425

Computational Model of Forward and Opposed Smoldering Combustion with Improved Chemical Kinetics (PhD. Thesis)  

E-Print Network [OSTI]

for modeling urethane foam insulation performance, Journalinsulation, upholstery, shock absorbing, and soundproofing. PU foam

Rein, Guillermo

2005-01-01T23:59:59.000Z

426

OPTIMISATION OF EXTRUDED POLYMER FOAM BY THE RESIDENT TIME DISTRIBUTION APPROACH  

E-Print Network [OSTI]

to simulate the twin-screw extruder[1] to [11] . In this paper, we have studied the processing of polystyrene foam by extrusion in a single screw extruder coupled with a gear pump. The basic principle of foamingOPTIMISATION OF EXTRUDED POLYMER FOAM BY THE RESIDENT TIME DISTRIBUTION APPROACH Frédéric Leonardi

Paris-Sud XI, Université de

427

ENERGY & ENVIRONMENT DIVISION. ANNUAL REPORT FY 1980  

E-Print Network [OSTI]

partioleboard and foam insulation. Work in this area hasThe design options are (1) foam insulation substitution; (2)

Authors, Various

2010-01-01T23:59:59.000Z

428

SOLAR ENERGY PROGRAM: CHAPTER FROM THE ENERGY AND ENVIRONMENT ANNUAL REPORT 1979  

E-Print Network [OSTI]

between the urethane foam insulation surrounding the tankbe provided when urethane foam insulation is used for tank

Authors, Various

2010-01-01T23:59:59.000Z

429

Thermal insulation by heat resistant polymers.  

E-Print Network [OSTI]

??Internal insulation in a solid rocket motor is a layer of heat-barrier material placed between the internal surface of the case and the propellant. The… (more)

Ahmed, Ashraf Fathy

2009-01-01T23:59:59.000Z

430

Install Removable Insulation on Valves and Fittings  

Broader source: Energy.gov [DOE]

This tip sheet on installing removable insulation on valves and fittings provides how-to advice for improving steam systems using low-cost, proven practices and technologies.

431

Conductivity measurement on thick insulating plaque samples.  

E-Print Network [OSTI]

?? The conductivity is one of the main properties of HVDC cable insulation materials and needs to be evaluated carefully. Since measurement on cables is… (more)

Huldén, Pierre

2014-01-01T23:59:59.000Z

432

Clarity without rigidity : urban performance landscape in Berlin  

E-Print Network [OSTI]

"What is necessary, is an incomplete design; a design that has clarity without rigidity; one that could be called 'open' as against 'shut'. This is the essence of theatrical thinking: a true theater designer will think of ...

Danziger, Jason Aaron, 1970-

1998-01-01T23:59:59.000Z

433

Method for epoxy foam production using a liquid anhydride  

DOE Patents [OSTI]

An epoxy resin mixture with at least one epoxy resin of between approximately 50 wt % and 100 wt %, an anhydride cure agent of between approximately 0 wt % and approximately 50 wt %, a tert-butoxycarbonyl anhydride foaming agent of between proximately 0.1-20 wt %, a surfactant and an imidazole or similar catalyst of less than approximately 2 wt %, where the resin mixture is formed from at least one epoxy resin with a 1-10 wt % tert-butoxycarbonyl anhydride compound and an imidazole catalyst at a temperature sufficient to keep the resin in a suitable viscosity range, the resin mixture reacting to form a foaming resin which in the presence of an epoxy curative can then be cured at a temperature greater than 50.degree. C. to form an epoxy foam.

Celina, Mathias (Albuquerque, NM)

2012-06-05T23:59:59.000Z

434

Foam-buffered spherical implosions at 527 nm  

SciTech Connect (OSTI)

Creation of a low density, high temperature plasma buffer between the absorption and ablation layers of a directly driven inertial confinement fusion implosion capsule has been proposed as a means to reduce {open_quotes}early time{close_quotes} imprint from laser nonuniformities. This thermal smoothing blanket might be created from a low density foam layer wrapped around the deuterium{endash}tritium filled microballoon. Preliminary spherical implosion tests of this concept using a polystyrene foam layer surrounding a glass microballoon were performed at the Nova laser [Rev. Sci. Instrum. {bold 57}, 2101 (1986)], using a 527 nm drive wavelength. Comparison of capsule yield and imploded core symmetry showed promising improvements in overall target performance, relative to one-dimensional undegraded hydrodynamic simulations, when the foam-buffer layer was present. {copyright} {ital 1997 American Institute of Physics.}

Watt, R.G.; Wilson, D.C.; Chrien, R.E.; Hollis, R.V.; Gobby, P.L.; Mason, R.J.; Kopp, R.A. [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)] [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States); Lerche, R.A.; Kalantar, D.H.; MacGowan, B.; Nelson, M.B.; Phillips, T. [Lawrence Livermore National Laboratory, Livermore, California 94551 (United States)] [Lawrence Livermore National Laboratory, Livermore, California 94551 (United States); McKenty, P.W. [University of Rochester, Laboratory for Laser Energetics, Rochester, New York 14627 (United States)] [University of Rochester, Laboratory for Laser Energetics, Rochester, New York 14627 (United States); Willi, O. [Imperial College of Science and Technology, London (United Kingdom)] [Imperial College of Science and Technology, London (United Kingdom)

1997-05-01T23:59:59.000Z

435

Nanoclay syntactic foam composites—High strain rate properties  

Science Journals Connector (OSTI)

The effect of nanoclay on the high strain rate mechanical properties of syntactic foam composites is studied. Nanoclay syntactic foam composites are fabricated with 10, 30 and 60% microballoon volume fractions, each having 0, 1, 2 and 5% volume fraction of nanoclay. High strain rate tests using split Hopkinson pressure bar (SHPB) apparatus are performed on all types of composites. Quasi-static tests are also carried out on MTS-810 machine to compare the results with the dynamic SHPB results. It is found that inclusion of 1% nanoclay volume fraction gives the optimum enhancement in peak stress and modulus of nanoclay syntactic foam composites. In addition, specimens tested at high strain rate are shown to exhibit higher stress and modulus compared to those tested at low strain rate. Scanning electron microscopy is performed to study the fracture behavior under different loading rates.

Sameer Peter; Eyassu Woldesenbet

2008-01-01T23:59:59.000Z

436

Parabolic-Dish Solar Concentrators of Film on Foam  

E-Print Network [OSTI]

Parabolic and spherical mirrors are constructed of aluminized PET polyester film on urethane foam. During construction, the chosen shape of the mirror is created by manipulating the elastic/plastic behavior of the film with air pressure. Foam is then applied to the film and, once hardened, air pressure is removed. At an f-number of 0.68, preliminary models have an optical angular spread of less than 0.25 degrees, a factor of 3.3 smaller than that for a perfectly spherical mirror. The possibility exists for creating large-lightweight mirrors with excellent shape and stiffness. These "film-on-foam" construction techniques may also be applicable to parabolic-trough solar concentrators but do not appear to be suitable for optical imaging applications because of irregularities in the film.

Barton, Sean A

2009-01-01T23:59:59.000Z

437

Lightweight products with metal foam -- Properties and methods of processing  

SciTech Connect (OSTI)

The aim of future production technology is the economic application of lightweight components with improved property profiles. Demands for weight reduction made by both the automotive industry and the machine-building industry can be met through selective utilization of metal foam composite--structures. To that end, basic investigations into material behavior and the machineability of metal foam composites are necessary. The presentation will submit an overview of the properties and processing parameters of selected composites based on an analysis of industrial requirements. The development of analytical models of the process mechanics will contribute to the creation of preconditions for a numerical simulation of selected processes. Innovative applications and the potential for future use of metal foam composites in lightweight construction will be shown as well. Finally, results from projects of the Fraunhofer-Institut fuer Werkzeugmaschinen und Umformtechnik together with industrial companies in Saxony will be presented.

Neugebauer, R. [Institutsleiter FhG IWU, Chemnitz (Germany); Braeunlich, H.; Wagner, U. [Abteilung Umformtechnologien FhG IWU, Chemnitz (Germany)

1998-12-31T23:59:59.000Z

438

Topological Insulators in Three Dimensions  

Science Journals Connector (OSTI)

We study three-dimensional generalizations of the quantum spin Hall (QSH) effect. Unlike two dimensions, where a single Z2 topological invariant governs the effect, in three dimensions there are 4 invariants distinguishing 16 phases with two general classes: weak (WTI) and strong (STI) topological insulators. The WTI are like layered 2D QSH states, but are destroyed by disorder. The STI are robust and lead to novel “topological metal” surface states. We introduce a tight binding model which realizes the WTI and STI phases, and we discuss its relevance to real materials, including bismuth.

Liang Fu; C. L. Kane; E. J. Mele

2007-03-07T23:59:59.000Z

439

Fully synthetic taped insulation cables  

DOE Patents [OSTI]

The present invention is a cable which, although constructed from inexpensive polyolefin tapes and using typical impregnating oils, furnishes high voltage capability up to 765 kV, and has such excellent dielectric characteristics and heat transfer properties that it is capable of operation at capacities equal to or higher than presently available cables at a given voltage. This is accomplished by using polyethylene, polybutene or polypropylene insulating tape which has been specially processed to attain properties which are not generally found in these materials, but are required for their use in impregnated electrical cables. Chief among these properties is compatibility with impregnating oil.

Forsyth, E.B.; Muller, A.C.

1983-07-15T23:59:59.000Z

440

Numerical and Experimental Investigations of Polyurethane Foam for Use as Cask Impact Limiter in Accidental Drop Scenarios - 12099  

SciTech Connect (OSTI)

Rigid, closed-cell polyurethane foams are frequently used as cask impact limiters in nuclear materials and hazardous waste transport due to their high energy-absorption potential. When assessing the cask integrity in accidental scenarios based on numerical simulations, a description of the foam damping properties is required for different strain rates and for a wide temperature range with respect to waste heat generation in conjunction with critical operating and environmental conditions. Implementation and adaption of a respective finite element material model strongly relies on an appropriate experimental data base. Even though extensive impact experiments were conducted e.g. in Sandia National Laboratories, Savannah River National Laboratory and by Rolls Royce plc, not all relevant factors were taken into account. Hence, BAM who is in charge of the mechanical evaluation of such packages within the approval procedure in Germany, incorporated systematic test series into a comprehensive research project aimed to develop numerical methods for a couple of damping materials. In a first step, displacement driven compression tests have been performed on confined, cubic specimens at five loading rates ranging from 0.02 mm/s to 3 m/s at temperatures between +90 deg. C and -40 deg. C. Materials include two different polyurethane foam types called FR3718 and FR3730 having densities of 280 kg/m{sup 3} and 488 kg/m{sup 3} from the product line-up of General Plastics Manufacturing Company. Their data was used to adapt an advanced plasticity model allowing for reliably simulating cellular materials under multi-axial compression states. Therefore, an automated parameter identification procedure had been established by combining an artificial neural network with local optimization techniques. Currently, the selected numerical material input values are validated and optimized by means of more complex loading configurations with the prospect of establishing methods applicable to impact limiters under severe accidental conditions. The reference data base is provided by experiments, where weights between 212 kg and 1200 kg have been dropped from heights between 1.25 m and 7 m on confined 10 cm cubic foam specimens. By presenting the deviations between experimental values and the corresponding output of finite element simulations, the potentials and restrictions of the resulting models are highlighted. Systematic compression tests on polyurethane foams had been performed at BAM test site within the framework of a research project on impact limiters for handling casks for radioactive waste. The experimental results had been used to adapt numerical models for simulating the behaviour of different foam types at different temperatures. The loading speed, however, turned out to have a major influence on their flow curves that can not be captured by simple strain-rate dependent multipliers. Especially for guided drop tests that come close to real accidental scenarios there is a significant gap between experimental and numerical results even when applying such advanced material models. Hence, the extensive data base is currently deployed for expanding the standard algorithms to include adequate dynamic hardening factors. (authors)

Kasparek, Eva M.; Voelzke, Holger; Scheidemann, Robert; Zencker, Uwe [BAM Federal Institute for Materials Research and Testing, 12200 Berlin (Germany)

2012-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "rigid foam insulation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Structural effects in ICF foam-buffered targets  

SciTech Connect (OSTI)

Experiments have indicated that low-density foam buffer layers can significantly mitigate the perturbing effects of beam non-uniformities in direct drive laser-matter interactions. A smooth drive is essential to obtaining ignition in the Direct Drive approach to ICF ignition. Consequently, the authors have conducted a detailed study of the mitigating capabilities of foam-buffers, and how to optimize then. Smoothly driven implosions may prove crucial to obtaining the high energy and neutron yields needed for Science Based Stockpile Steward ship applications.

Mason, R.J.; Kopp, R.A.; Goldman, S.R.; Wilson, D.C.; Watt, R.G.

1997-10-01T23:59:59.000Z

442

Electrical conductivity of dispersions: from dry foams to dilute suspensions  

E-Print Network [OSTI]

We present new data for the electrical conductivity of foams in which the liquid fraction ranges from two to eighty percent. We compare with a comprehensive collection of prior data, and we model all results with simple empirical formul\\ae. We achieve a unified description that applies equally to dry foams and emulsions, where the droplets are highly compressed, as well as to dilute suspensions of spherical particles, where the particle separation is large. In the former limit, Lemlich's result is recovered; in the latter limit, Maxwell's result is recovered.

K. Feitosa; S. Marze; A. Saint-Jalmes; D. J. Durian

2005-07-18T23:59:59.000Z

443

Determination of Fluorine, Chlorine and Bromine in Household Products by means of Oxygen Bomb Combustion and Ion Chromatography  

Science Journals Connector (OSTI)

......circuit board a6 ND 394 11 47,144 157 Insulation material a7 2,663 16 N.D ND Computer...80,162 85 ND Rigid polyurethane foam b18 264 14 99,543 46 ND *Quintuplicate...commonly used as a foamer in thermal insulation materials. Furthermore, abundant......

Shuai Zhang; Tianbo Zhao; Jia Wang; Xiaoling Qu; Wei Chen; Yin Han

2013-01-01T23:59:59.000Z

444

Building America Efficient Solutions for Existing Homes Case Study: Habitat for Humanity South Sarasota County, Venice, Florida  

Broader source: Energy.gov [DOE]

PNNL and Calcs Plus helped the South Sarasota County Florida Habitat for Humanity retrofit a 1978 single-story home by stripping old drywall, air sealing concrete block walls, and installing rigid insulation, furring strips, and new drywall. The attic was sealed and insulated with spray foam to house a new heat pump.

445

Low-cost exterior insulation process and structure  

DOE Patents [OSTI]

A low-cost exterior insulation process of stacking bags of insulating material against a wall and covering them with wire mesh and stucco provides a durable structure with good insulating value.

Vohra, Arun (Bethesda, MD)

1999-01-01T23:59:59.000Z

446

Low-cost exterior insulation process and structure  

DOE Patents [OSTI]

A low-cost exterior insulation process of stacking bags of insulating material against a wall and covering them with wire mesh and stucco provides a durable structure with good insulating value. 2 figs.

Vohra, A.

1999-03-02T23:59:59.000Z

447

Modular cell biology: retroactivity and insulation Domitilla Del Vecchio1,  

E-Print Network [OSTI]

Modular cell biology: retroactivity and insulation Domitilla Del Vecchio1, *, Alexander J Ninfa2 a remarkable insulation property, due to the fast timescales of the phosphorylation and dephosphorylation: computational methods; metabolic and regulatory networks Keywords: feedback; insulation; modularity; singular

Sontag, Eduardo

448

APPLIED PHYSICS REVIEWS Semi-insulating semiconductor heterostructures: Optoelectronic  

E-Print Network [OSTI]

APPLIED PHYSICS REVIEWS Semi-insulating semiconductor heterostructures: Optoelectronic properties of optoelectronic properties of and uses for semi-insulating semiconductor heterostructures and thin films. The principal optical and optoelectronic properties of semi-insulating epilayers and heterostructures

Nolte, David D.

449

Limitations of High-Voltage Insulation  

Science Journals Connector (OSTI)

... materials such as impregnated paper. The important electrical properties of the materials used for the insulation of high-voltage circuits are conductivity and electric strength. The conductivity measures the ability ... a million times between themselves, but they are all classified as available for high-voltage insulation.

1938-01-08T23:59:59.000Z

450

Heat Insulation in Electric Power Stations  

Science Journals Connector (OSTI)

... HEAT insulation of pipes, boilers and generating sets, which used to be indicated by the general ... in steam generating plants, it is common experience to find that cracks develop in the insulation on water-cooled furnace walls as the result of: (a) expansion and contraction ...

1940-12-28T23:59:59.000Z

451

Clothing Insulation and Accidental Hypothermia in Youth  

Science Journals Connector (OSTI)

... and climbers in Britain. The effects of exercise, wind and wetting on the thermal insulation of a typical clothing assembly were observed. The clothing examined had been worn by ... ) 0-13 1-00 (b) AN ABBREVIATED TABLE or STANDARD VALUES OF AIR INSULATION (IA)4

L. G. C. PUGH

1966-03-26T23:59:59.000Z

452

Uniform insulation applied-B ion diode  

DOE Patents [OSTI]

An applied-B field extraction ion diode has uniform insulation over an anode surface for increased efficiency. When the uniform insulation is accomplished with anode coils, and a charge-exchange foil is properly placed, the ions may be focused at a point on the z axis.

Seidel, David B. (Albuquerque, NM); Slutz, Stephen A. (Albuquerque, NM)

1988-01-01T23:59:59.000Z

453

Kingspan Insulated Panels: Order (2013-CE-5353)  

Broader source: Energy.gov [DOE]

DOE ordered Kingspan Insulated Panels, Inc. to pay a $8,000 civil penalty after finding Kingspan Insulated Panels had failed to certify that any basic models of walk-in cooler and freezer components comply with the applicable energy conservation standards.

454

ITER Central Solenoid Coil Insulation Qualification  

SciTech Connect (OSTI)

An insulation system for ITER Central Solenoid must have sufficiently high electrical and structural strength. Design efforts to bring stresses in the turn and layer insulation within allowables failed. It turned out to be impossible to eliminate high local tensile stresses in the winding pack. When high local stresses can not be designed out, the qualification procedure requires verification of the acceptable structural and electrical strength by testing. We built two 4x4 arrays of the conductor jacket with two options of the CS insulation and subjected the arrays to 1.2 million compressive cycles at 60 MPa and at 76 K. Such conditions simulated stresses in the CS insulation. We performed voltage withstand tests and after end of cycling we measured the breakdown voltages between in the arrays. After that we dissectioned the arrays and studied micro cracks in the insulation. We report details of the specimens preparation, test procedures and test results.

Martovetsky, Nicolai N [ORNL] [ORNL; Mann Jr, Thomas Latta [ORNL] [ORNL; Miller, John L [ORNL] [ORNL; Freudenberg, Kevin D [ORNL] [ORNL; Reed, Richard P [Cryogenic Materials, Inc.] [Cryogenic Materials, Inc.; Walsh, Robert P [Florida State University] [Florida State University; McColskey, J D [National Institute of Standards and Technology (NIST), Boulder] [National Institute of Standards and Technology (NIST), Boulder; Evans, D [Advanced Cryogenic Materials] [Advanced Cryogenic Materials

2010-01-01T23:59:59.000Z

455

ITER CENTRAL SOLENOID COIL INSULATION QUALIFICATION  

SciTech Connect (OSTI)

An insulation system for ITER Central Solenoid must have sufficiently high electrical and structural strength. Design efforts to bring stresses in the turn and layer insulation within allowables failed. It turned out to be impossible to eliminate high local tensile stresses in the winding pack. When high local stresses can not be designed out, the qualification procedure requires verification of the acceptable structural and electrical strength by testing. We built two 4 x 4 arrays of the conductor jacket with two options of the CS insulation and subjected the arrays to 1.2 million compressive cycles at 60 MPa and at 76 K. Such conditions simulated stresses in the CS insulation. We performed voltage withstand tests and after end of cycling we measured the breakdown voltages between in the arrays. After that we dissectioned the arrays and studied micro cracks in the insulation. We report details of the specimens preparation, test procedures and test results.

Martovetsky, N N; Mann, T L; Miller, J R; Freudenberg, K D; Reed, R P; Walsh, R P; McColskey, J D; Evans, D

2009-06-11T23:59:59.000Z

456

Preliminary Investigation of the Thermal Decomposition of Ablefoam and EF-AR20 Foam (Ablefoam Replacement)  

SciTech Connect (OSTI)

Preliminary thermal decomposition experiments with Ablefoam and EF-AR20 foam (Ablefoam replacement) were done to determine the important chemical and associated physical phenomena that should be investigated to develop the foam decomposition chemistry sub-models that are required in numerical simulations of the fire-induced response of foam-filled engineered systems for nuclear safety applications. Although the two epoxy foams are physically and chemically similar, the thermal decomposition of each foam involves different chemical mechanisms, and the associated physical behavior of the foams, particularly ''foaming'' and ''liquefaction,'' have significant implications for modeling. A simplified decomposition chemistry sub-model is suggested that, subject to certain caveats, may be appropriate for ''scoping-type'' calculations.

ULIBARRI, TAMARA A.; DERZON, DORA K.; ERICKSON, KENNETH L.; CASTANEDA, JAIME N.; BOREK III, THEODORE T.; RENLUND, ANITA M.; MILLER, JILL C.; CLAYTON, DANIEL; FLETCHER, THOMAS H.

2002-01-01T23:59:59.000Z

457

Building Technologies Office: Vacuum Insulation Panels Research Project  

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

Vacuum Insulation Vacuum Insulation Panels Research Project to someone by E-mail Share Building Technologies Office: Vacuum Insulation Panels Research Project on Facebook Tweet about Building Technologies Office: Vacuum Insulation Panels Research Project on Twitter Bookmark Building Technologies Office: Vacuum Insulation Panels Research Project on Google Bookmark Building Technologies Office: Vacuum Insulation Panels Research Project on Delicious Rank Building Technologies Office: Vacuum Insulation Panels Research Project on Digg Find More places to share Building Technologies Office: Vacuum Insulation Panels Research Project on AddThis.com... About Take Action to Save Energy Partner with DOE Activities Appliances Research Building Envelope Research Windows, Skylights, & Doors Research

458

Building America Expert Meeting Report: Interior Insulation Retrofit...  

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

Interior Insulation Retrofit of Mass Masonry Wall Assembliesessment of risk factors for premature building deterioration due to interior insulation retrofits, and methods to reduce...

459

Foundation Insulation for Existing Homes | Department of Energy  

Energy Savers [EERE]

Foundation Insulation for Existing Homes Foundation Insulation for Existing Homes This presentation was delivered at the U.S. Department of Energy Building America Technical Update...

460

Journal Article: Graphene physics and insulator-metal transition...  

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

Graphene physics and insulator-metal transition in compressed hydrogen Citation Details Title: Graphene physics and insulator-metal transition in compressed hydrogen Authors:...

Note: This page contains sample records for the topic "rigid foam insulation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Quasistatic rheology of foams II. Continuous shear flow  

E-Print Network [OSTI]

and numerically. We extract, from the images of the sheared foam, the plastic flow profiles and the modifications AND GEORGES DEBREGEAS2 1 Division of Engineering and Applied Sciences, Harvard University, Pierce Hall, 29 in the temporal and spatial correlations of the plastic events. The spa- tial fluctuations of the static stress

462

FOAM: Expanding the Horizons of Climate Michael Tobis  

E-Print Network [OSTI]

on a project that expands the applicability of dynamic climate modeling to very long time scales. The FastFOAM: Expanding the Horizons of Climate Modeling Michael Tobis Mathematics and Computer Science passing, scientific supercomputing, climate, meteorology, oceanography, hydrology #12;Introduction Climate

463

Holographic study of conventional and negative Poisson's ratio metallic foams  

E-Print Network [OSTI]

. Inhomogeneous, non-affine deformation was observed holographically in both foam materials. Introduction in this series were determined from displacement measurements of high magnification video tapes of the tensile a very useful and reliable tool to determine the Poisson's ratio of orthotropic FRP (Fiber Reinforced

Lakes, Roderic

464

Sensitivity of forced air distribution system efficiency to climate, duct location, air leakage and insulation  

E-Print Network [OSTI]

Location, Air Leakage and Insulation Iain S. Walker Energy4 Duct Insulation, Location and Leakageinsulation

Walker, Iain

2001-01-01T23:59:59.000Z

465

Nonlinear conduction via solitons in a topological mechanical insulator  

E-Print Network [OSTI]

Networks of rigid bars connected by joints, termed linkages, provide a minimal framework to design robotic arms and mechanical metamaterials built out of folding components. Here, we investigate a chain-like linkage that, according to linear elasticity, behaves like a topological mechanical insulator whose zero-energy modes are localized at the edge. Simple experiments we performed using prototypes of the chain vividly illustrate how the soft motion, initially localized at the edge, can in fact propagate unobstructed all the way to the opposite end. We demonstrate using real prototypes, simulations and analytical models that the chain is a mechanical conductor, whose carriers are nonlinear solitary waves, not captured within linear elasticity. Indeed, the linkage prototype can be regarded as the simplest example of a topological metamaterial whose protected mechanical excitations are solitons, moving domain walls between distinct topological mechanical phases. More practically, we have built a topologically protected mechanism that can perform basic tasks such as transporting a mechanical state from one location to another. Our work paves the way towards adopting the principle of topological robustness in the design of robots assembled from activated linkages as well as in the fabrication of complex molecular nanostructures.

Bryan Gin-ge Chen; Nitin Upadhyaya; Vincenzo Vitelli

2014-08-13T23:59:59.000Z

466

Stud Walls With Continuous Exterior Insulation for Factory Built...  

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

density, fairly simple window and door framing details can be used. Easily installed plastic sill flashing is an added benefit. STUD WALLS WITH FOAM- CONTROL NAILBRACE AFM's...

467

Insulation failure assessment under random energization overvoltages  

SciTech Connect (OSTI)

This paper offers a new simple approach to the evaluation of the risk of failure of external insulation in view of their known probabilistic nature. This is applied to EHV transmission systems subjected to energization overvoltages. The randomness, both in the applied stresses and insulation`s withstand characteristics are numerically simulated and then integrated to assess the risk of failure. Overvoltage control methods are accounted for, such as the use of pre-insertion breaker resistors, series capacitive compensation, and the installation of shunt reactors.

Mahdy, A.M.; Anis, H.I. [Cairo Univ. (Egypt)] [Cairo Univ. (Egypt); El-Morshedy, A. [Faculty of Science for Girls, Dammam (Saudi Arabia)] [Faculty of Science for Girls, Dammam (Saudi Arabia)

1996-03-01T23:59:59.000Z

468

Electrical Strength of Multilayer Vacuum Insulators  

SciTech Connect (OSTI)

The electrical strength of vacuum insulators is a key constraint in the design of particle accelerators and pulsed power systems. Vacuum insulating structures assembled from alternating layers of metal and dielectric can result in improved performance compared to conventional insulators, but previous attempts to optimize their design have yielded seemingly inconsistent results. Here, we present two models for the electrical strength of these structures, one assuming failure by vacuum arcing between adjacent metal layers and the other assuming failure by vacuum surface flashover. These models predict scaling laws which are in agreement with the experimental data currently available.

Harris, J R; Kendig, M; Poole, B; Sanders, D M; Caporaso, G J

2008-07-01T23:59:59.000Z

469

Is Graphene in Vacuum an Insulator?  

Science Journals Connector (OSTI)

We present evidence, from lattice Monte Carlo simulations of the phase diagram of graphene as a function of the Coulomb coupling between quasiparticles, that graphene in vacuum is likely to be an insulator. We find a semimetal-insulator transition at ?gcrit=1.11±0.06, where ?g?2.16 in vacuum, and ?g?0.79 on a SiO2 substrate. Our analysis uses the logarithmic derivative of the order parameter, supplemented by an equation of state. The insulating phase disappears above a critical number of four-component fermion flavors 4

Joaquín E. Drut and Timo A. Lähde

2009-01-13T23:59:59.000Z

470

Steam-foam mechanistic field trial in the Midway-Sunset field  

SciTech Connect (OSTI)

A one-pattern, steam-foam mechanistic field trial was conducted in Section 26C of the Midway-Sunset field (upper Monarch sand). The test objectives were (1) to understand the mechanisms of steam diversion caused by foam under reservoir conditions, (2) to establish whether foam can exist in-depth away from the injection well, and (3) to measure incremental oil that can be attributed to foam. Surfactant was injected with steam and nitrogen continuously, and bottom-hole injection pressure (BIHP) increased from 100 to 300 psig, indicating good foam generation. Better steam distribution across the injector's perforations occurred when foam was generated. Improvements in both vertical and areal sweep efficiency of steam were observed. Substantial temperature and gas saturation increases coincided with surfactant breakthrough and local reservoir pressure increases at observation wells. Complementary laboratory core-floods showed that foam generation could occur at low-pressure gradients, which are typical of in-depth conditions. Both laboratory and field data were interpreted as evidence that the in-depth presence of foam was the result of local generation wherever surfactant, steam, and nitrogen were present, rather than propagation of a foam bank generated near the injector. Some oil-production increase was also observed during the test; however, an accurate quantitative estimate of incremental oil owing to foam was difficult to establish.

Friedmann, F.; Smith, M.E.; Guice, W.R. (Chevron Petroleum Technology Co., La Habra, CA (United States)); Gump, J. (Chevron USA Production Co., Bakersfield, CA (United States)); Nelson, D.G. (Chevron USA Production Co., Coalinga, CA (United States))

1994-11-01T23:59:59.000Z

471

Energy efficiency improvements for refrigerator/freezers using prototype doors containing gas-filled panel insulating systems  

SciTech Connect (OSTI)

Energy efficiency improvements in domestic refrigerator/freezers, are directly influenced by the overall thermal performance of the cabinet and doors. An advanced system for reducing heat gain is Gas-Filled Panel thermal insulation technology. Gas-Filled Panels contain a low-conductivity, inert gas at atmospheric pressure and employ a reflective baffle to suppress radiation and convection within the gas. This paper presents energy use test results for a 1993 model 500 liter top mount refrigerator/freezer operated with its original doors and with a series of alternative prototype doors. Gas-Filled Panel technology was used in two types of prototype refrigerator/freezer doors. In one design, panels were used in composite with foam in standard metal door pans; this design yielded no measurable energy savings. In the other design, special polymer door pans were fitted with panels that fill nearly all of the available insulation volume; this design yielded a 6.5% increase in energy efficiency for the entire refrigerator/freezer. The EPA Refrigerator Analysis computer program has been used to predict the change in daily energy consumption with the alternative doors. The computer model also projects a 25% energy efficiency improvement for a refrigerator/freezer that would use Gas-Filled Panel insulation throughout the cabinet as well as the doors.

Griffith, B.; Arasteh, D.; Tuerler, D.

1995-01-01T23:59:59.000Z

472

FOAM: NOVEL DELIVERY TECHNOLOGY FOR REMEDIATION OF VADOSE ZONE ENVIRONMENTS  

SciTech Connect (OSTI)

Deep vadose zone environments can be a primary source and pathway for contaminant migration to groundwater. These environments present unique characterization and remediation challenges that necessitate scrutiny and research. The thickness, depth, and intricacies of the deep vadose zone, combined with a lack of understanding of the key subsurface processes (e.g., biogeochemical and hydrologic) affecting contaminant migration, make it difficult to create validated conceptual and predictive models of subsurface flow dynamics and contaminant behavior across multiple scales. These factors also make it difficult to design and deploy sustainable remedial approaches and monitor long-term contaminant behavior after remedial actions. Functionally, the methods for addressing contamination must remove and/or reduce transport of contaminants. This problem is particularly challenging in the arid western United States where the vadose zone is hundreds of feet thick, rendering transitional excavation methods exceedingly costly and ineffective. Delivery of remedial amendments is one of the most challenging and critical aspects for all remedy-based approaches. The conventional approach for delivery is through injection of aqueous remedial solutions. However, heterogeneous deep vadose zone environments present hydrologic and geochemical challenges which limit the effectiveness. Because the flow of solution infiltration is dominantly controlled by gravity and suction, injected liquid preferentially percolates through highly permeable pathways, by-passing low-permeability zones which frequently contain the majority of contamination. Moreover, the wetting front can readily mobilize and enhance contaminant transport to the underlying aquifer prior to stabilization. Development of innovative, in-situ technologies may be the only way to meet remedial action objectives and long-term stewardship goals. Surfactants can be used to lower the liquid surface tension and create stabile foams, which readily penetrate low permeability zones. Although surfactant foams have been utilized for subsurface mobilization efforts in the oil and gas industry, so far, the concept of using foams as a delivery mechanism for transporting remedial amendments into deep vadose zone environments to stabilize metal and long-lived radionuclide contaminants has not been explored. Foam flow can be directed by pressure gradients, rather than being dominated by gravity; and, foam delivery mechanisms limit the volume of water (< 5% vol.) required for remedy delivery and emplacement, thus mitigating contaminant mobilization. We will present the results of a numerical modeling and integrated laboratory- / intermediate-scale investigation to simulate, develop, demonstrate, and monitor (i.e. advanced geophysical techniques and advanced predictive biomarkers) foam-based delivery of remedial amendments to remediate metals and radionuclides in vadose zone environments.

Jansik, Danielle P.; Wellman, Dawn M.; Mattigod, Shas V.; Zhong, Lirong; Wu, Yuxin; Foote, Martin; Zhang, Z. F.; Hubbard, Susan

2011-07-05T23:59:59.000Z

473

Issue 5: Optimizing High Levels of Insulation  

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

Issue 5: Optimizing High Levels of Insulation NREL, Ren Anderson Building America Technical Update Meeting July 25 th , 2012 Issue 5 - How Much Insulation is Too Much? How do we define the cost-effective limit for improvements in enclosure efficiency? Key Factors to Consider: -Cost of savings vs. cost of grid-supplied energy -Cost of efficiency savings vs. cost of savings from renewable generation. -Savings from envelope improvements vs. other efficiency options Context * It is widely believed that code-specified insulation levels also represent cost-effective limits. * However, the cost-effective insulation levels exceed IECC values in many climates. * The homeowner-driven value of modest increases in enclosure performance can create economies of scale that will reduce

474

Next Generation Insulation Materials: Challenges and Opportunities...  

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

Next-Generation Insulation Materials: Challenges and Opportunities Nov 14 2014 03:00 PM - 04:00 PM Kaushik Biswas, Building Technologies Research and Integration Center, Oak Ridge...

475

Nonlinear boundary value problem of magnetic insulation  

E-Print Network [OSTI]

On the basis of generalization of upper and lower solution method to the singular two point boundary value problems, the existence theorem of solutions for the system, which models a process of magnetic insulation in plasma is proved.

A. V. Sinitsyn

2000-09-09T23:59:59.000Z

476

On Electrical Insulation in High Vacua  

Science Journals Connector (OSTI)

1 January 1878 research-article On Electrical Insulation in High Vacua William Crookes The Royal Society is collaborating with JSTOR to digitize, preserve, and extend access to Proceedings of the Royal Society of London. www.jstor.org

1878-01-01T23:59:59.000Z

477

Phosphorylation based insulation devices design and implementation  

E-Print Network [OSTI]

This thesis presents the analysis of a phosphorylation based insulation device implemented in Saccharomyces cerevisae and the minimization of the retroactivity to the input and retroactivity to the output of a single cycle ...

Rivera Ortiz, Phillip M. (Phillip Michael)

2013-01-01T23:59:59.000Z

478

Noise Absorbing High-Temperature Insulation  

Science Journals Connector (OSTI)

Until recently simple heat shields on the engine, in the engine space or on the subframe of a vehicle had given protection against radiant heat from hot components. Today, complex high-temperature insulation syst...

Peter Cappellucci

2013-07-01T23:59:59.000Z

479

Laser perforation of screen vacuum thermal insulation  

Science Journals Connector (OSTI)

This paper presents the results of the process of laser perforation of screen vacuum thermal insulation and shows that it has high efficiency. The use of various types of IR lasers...

Sysoev, V K; Vyatlev, P A; Zakharchenko, A V

2007-01-01T23:59:59.000Z

480

Insulate Steam Distribution and Condensate Return Lines  

Broader source: Energy.gov [DOE]

This tip sheet on insulating steam distribution and condensate return lines provides how-to advice for improving industrial steam systems using low-cost, proven practices and technologies.

Note: This page contains sample records for the topic "rigid foam insulation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Insulate Steam Distribution and Condensate Return Lines  

SciTech Connect (OSTI)

This revised ITP tip sheet on insulating steam distribution and condensate return lines provides how-to advice for improving industrial steam systems using low-cost, proven practices and technologies.

Not Available

2006-01-01T23:59:59.000Z

482

Thermal Insulation in Solar Thermal Devices  

Science Journals Connector (OSTI)

Thermal Insulation is a device or a practice which is used in a system for minimising heat losses caused due to transfer of heat from hotter to colder regions. It is one of the cheapest methods of energy conse...

B. C. Raychaudhuri

1986-01-01T23:59:59.000Z

483

Insulation for New Home Construction | Department of Energy  

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

Insulation for New Home Construction Insulation for New Home Construction Insulation for New Home Construction June 20, 2012 - 7:59pm Addthis Planning carefully for insulation results in reduced utility bills and superior comfort during the life of the home. In this house, raised heel trusses accommodate R-60 insulation. | Credit: Paul Norton, NREL. Planning carefully for insulation results in reduced utility bills and superior comfort during the life of the home. In this house, raised heel trusses accommodate R-60 insulation. | Credit: Paul Norton, NREL. What does this mean for me? Adding extra insulation in a new home is more cost-effective than retrofitting insulation after the home is completed. Insulation is a key component of the systems that work together to create a comfortable, energy-efficient home that is affordable to heat and

484

Savings Project: Insulate Your Water Heater Tank | Department of Energy  

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

Savings Project: Insulate Your Water Heater Tank Savings Project: Insulate Your Water Heater Tank Savings Project: Insulate Your Water Heater Tank Addthis Project Level medium Energy Savings $20-$45 annually Time to Complete 1.5 hours Overall Cost $30 Insulate your hot water tank to save energy and money. | Photo courtesy of iStockphoto.com/glennebo Insulate your hot water tank to save energy and money. | Photo courtesy of iStockphoto.com/glennebo Just like insulating your walls or roof, insulating your hot water tank is an easy and inexpensive way to improve energy efficiency and save you money each month. If your water tank is new, it is likely already insulated. If you have an older hot water tank, check to see if it has insulation with an R-value of at least 24. If not, consider insulating your water tank, which

485

On the Potential Use of Small Scale Fire Tests for Screening Steiner Tunnel Results for Spray Foam Insulation.  

E-Print Network [OSTI]

??The goal of this study is to assess the potential of using bench-scale fire testing to screen materials for the Steiner tunnel fire test. It… (more)

Didomizio, Matthew

2013-01-01T23:59:59.000Z

486

Strained-Si-on-Insulator (SSOI) and SiGe-on-Insulator (SGOI): Fabrication Obstacles and Solutions  

E-Print Network [OSTI]

Strained-Si-on-Insulator (SSOI) and SiGe-on-Insulator (SGOI): Fabrication Obstacles and Solutions-Si and SiGe-on-insulator were fabricated, combining both the benefits of high-mobility strained-Si and SOI) to oxidized handle wafers. Layer transfer onto insulating handle wafers can be accomplished using grind

487

Development of insulating coatings for liquid metal blankets  

SciTech Connect (OSTI)

It is shown that self-cooled liquid metal blankets are feasible only with electrically insulating coatings at the duct walls. The requirements on the insulation properties are estimated by simple analytical models. Candidate insulator materials are selected based on insulating properties and thermodynamic consideration. Different fabrication technologies for insulating coatings are described. The status of the knowledge on the most crucial feasibility issue, the degradation of the resisivity under irradiation, is reviewed.

Malang, S.; Borgstedt, H.U. [Kernforschungszentrum Karlsruhe GmbH (Germany); Farnum, E.H. [Los Alamos National Lab., NM (United States); Natesan, K. [Argonne National Lab., IL (United States); Vitkovski, I.V. [Efremov Inst., St. Petersburg (Russian Federation). MHD-Machines Lab.

1994-07-01T23:59:59.000Z

488

Foam for improving sweep efficiency in subterranean oil-bearing formations  

SciTech Connect (OSTI)

This patent describes a conformance improvement treatment process for a subterranean oil-bearing formation having a region of higher permeability and a region of lower permeability. It comprises injecting a foam into the region of higher permeability to reduce the permeability therein, the foam comprising a crosslinkable carboxylate-containing polymer, a crosslinking agent capable of crosslinking the polymer, a surfactant, a liquid solvent, and a foaming gas. A process for recovering oil from a subterranean oil-bearing formation by improving the mobility of a displacement fluid, the process. It comprises preparing a flowing mobility control foam comprising a crosslinkable polymer, a crosslinking agent capable of crosslinking the polymer, a surfactant, a liquid solvent, and a foaming gas; and displacing the foam through the formation by the displacement fluid to control the mobility of the displacement fluid in the formation.

Sydansk, R.D.

1992-04-21T23:59:59.000Z

489

Development and Characterization of a New Epoxy Foam Encapsulant as an Ablefoam Replacement  

SciTech Connect (OSTI)

A new epoxy foam encapsulant, EF-ARIO/20, has been developed at Sandia National Laboratories (SNL) as a replacement for Ablefoam", an epoxy foam encapsulant used in the W76 Arming, Fusing, and Firing (Al%@) system. Since it contained toxic ingredients including a known carcinogen, Ablefoarn" is no longer commercially available. It has been demonstrated by scanning electron microscopy (SEM) that the microstructure of the new epoxy foam is similar to that of Ablefoam@. Mechanical properties of tensile and compressive strength, and tensile and compressive modulus, and thermal properties of glass transition temperature (.TJ, and coefficient of thermal expansion (CTE) have been measured for the new foam. Electrical properties of dielectric constant, dissipation factors, volume resistivity, and dielectric strength were also measured. These property measurements are comparable to those of Ablefoam@. Development and characterization of the new foam will be discusse~ and a comparison of mechanical, thermal, and electrical properties for the new epoxy foam and Ablefoam@ will be reported.

Rand, P.B.; Russick, E.M.

1998-12-01T23:59:59.000Z

490

Free products, Orbit Equivalence and Measure Equivalence Rigidity  

E-Print Network [OSTI]

Free products, Orbit Equivalence and Measure Equivalence Rigidity Aur´elien Alvarez and Damien Gaboriau February 18, 2009 Abstract We study the analogue in orbit equivalence of free product decomposition and free indecomposability for countable groups. We introduce the (orbit equivalence invariant

Paris-Sud XI, Université de

491

SUPERVISORY ADAPTIVE BALANCING OF RIGID ROTORS DURING ACCELERATION  

E-Print Network [OSTI]

machining spindles, industrial turbomachinery, and aircraft gas turbine engines, are very commonly used strategy is proposed to coordinate the parameter estimation and the balancer control action. Simulation acceleration transient time will be developed based on a rigid rotor model. The actuator used in this research

Zhou, Shiyu

492

ccsd00001150 Getting DNA twist rigidity from single molecule  

E-Print Network [OSTI]

ccsd­00001150 (version 1) : 17 Feb 2004 Getting DNA twist rigidity from single molecule experiments to study the extension versus rotation diagrams of single supercoiled DNA molecules. We reproduce single DNA molecules in order to test their mechanical properties. A #12;rst way to manipulate a single

493

Low density, microcellular, dopable, agar/gelatin foams for pulsed power experiments  

SciTech Connect (OSTI)

Low-density, microcellular foams prepared from the natural polymers agar and gelatin have been developed for pulsed-power physics experiments. Numerous experiments were supported with foams having densities at or below 10 mg/cm{sup 3}. For some of the experiments, the agar/gelatin foam was uniformly doped with metallic elements using soluble salts. Depending on the method of preparation, cell sizes were typically below 10 microns and for one process were below 1.0 micron.

McNamara, W.F. [Orion International Technologies, Inc., Albuquerque, NM (United States); Aubert, J.H. [Sandia National Lab., Albuquerque, NM (United States)

1997-04-01T23:59:59.000Z

494

Low-density hydrocarbon foams for laser fusion targets: Progress report, 1987  

SciTech Connect (OSTI)

This report describes progress made in the development of direct-drive hydrocarbon foam targets for laser inertial confinement fusion during 1987. The foam materials are polystyrene, resorcinol-formaldehyde, carbonized resorcinol-formaldehyde, and cellulose acetate. The processes for making the foams, their properties, characterization techniques, and the relationship of their properties to target specifications are presented. Progress in the creation and testing of prototype targets is also described.

Haendler, B.L.; Buckley, S.R.; Chen, C.; Cook, A.R.; Cook, R.C.; Hair, L.M.; Kong, F.M.; Kramer, H.D.; Letts, S.A.; Overturf, G.E. III

1988-06-01T23:59:59.000Z

495

Carbon foam characterization: sandwich flexure, tensile and shear response  

E-Print Network [OSTI]

pitches. More recently, new manufacturing developments have been made at Oakridge National Laboratory (ORNL) [4,5]. Changes in the manufacturing process have led to enhancement of certain thermal properties, and are leading the way to use of carbon foam.... As the material becomes more available to industry, the list of potential applications will continue to grow; however, there are some promising potential applications currently under development. ORNL is currently investigating and applying the unique thermal...

Sarzynski, Melanie Diane

2004-09-30T23:59:59.000Z

496

Comments on Cahill's Quantum Foam Inflow Theory of Gravity  

E-Print Network [OSTI]

We reveal an underlying flaw in Reginald T. Cahill's recently promoted quantum foam inflow theory of gravity. It appears to arise from a confusion of the idea of the Galilean invariance of the acceleration of an individual flow with what is obtained as an acceleration when a homogeneous flow is superposed with an inhomogeneous flow. We also point out that the General Relativistic covering theory he creates by substituting a generalized Painleve-Gullstrand metric into Einstein's field equations leads to absurd results.

T. D. Martin

2004-07-20T23:59:59.000Z

497

Thermal Characterization of Graphitic Carbon Foams for Use in Thermal Storage Applications.  

E-Print Network [OSTI]

?? Highly conductive graphitic foams are currently being studied for use as thermal conductivity enhancers (TCEs) in thermal energy storage (TES) systems. TES systems store… (more)

Drummond, Kevin P.

2012-01-01T23:59:59.000Z

498

E-Print Network 3.0 - advanced lost foam Sample Search Results  

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

of Fusion Energy, Madison WI, Sept. 14-16, 2004. Summary: ratios. Based on these recent innovations and advances, we suggest the development of ceramic foams... ., Pacoima...

499

Development of High Performance Hybrid Syntactic Foams: Structure and Material Property Characterization.  

E-Print Network [OSTI]

??Syntactic foams are light weight particulate composites that use hollow particles (microballoons) as reinforcement in a polymer resin matrix. High strength microballoons provide closed cell… (more)

Maharsia, Rahul R

2005-01-01T23:59:59.000Z

500

Physical simulation and fine digital study of thermal foam compound flooding  

Science Journals Connector (OSTI)

According to the similarity criterion of 3D physical simulation of thermal recovery, experimental parameters of 3D physical simulation of steam flooding and thermal foam compound flooding in extra-heavy oil reservoirs of the Gudao Oilfield were calculated, and relevant experiments were carried out. Based on the experimental results, 3D fine numerical simulation was carried out to analyze the steam flooding and thermal foam compound flooding in heavy oil reservoirs. The results show that thermal foam compound flooding could effectively inhibit steam channeling and improve sweep efficiency, and thus enhance the oil recovery in heavy oil reservoirs after steam flooding. Technological parameters of thermal foam compound flooding were optimized according to the results of fine numerical simulation. The optimum injection method is foam-slug injection, the optimal steam injection rate is 25 mL/min, nitrogen injection rate is 1 000 mL/min (standard conditions), the time of foam-slug injection is 1.0 min and the interval between foam-slugs is about 10-20 min during thermal foam-slug injection. At last, the similarity criterion was employed for inversion calculation of the optimization results. Based on the results, optimal field injection and production parameters can be confirmed. The ultimate recovery ratio of thermal foam compound flooding in super-heavy oil reservoirs could reach 42.15%, which is 12.50% higher than steam flooding.

Zhanxi PANG; Huiqing LIU; Pingyuan GE; Li HAN

2012-01-01T23:59:59.000Z