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Soil moisture monitoring results at the radioactive waste management complex of the Idaho National Engineering Laboratory, FY-1993

Description: In FY-1993, two tasks were performed for the Radioactive Waste Management Complex (RWMC) Low Level Waste Performance Assessment to estimate net infiltration from rain and snow at the Subsurface Disposal Area (SDA) and provide soil moisture data for hydrologic model calibration. The first task was to calibrate the neutron probe to convert neutron count data to soil moisture contents. A calibration equation was developed and applied to four years of neutron probe monitoring data (November 1986 to… more
Date: November 1, 1993
Creator: McElroy, D. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Thermal expansion of epoxy-fiberglass composite specimens

Description: The thermal expansion behavior of three epoxy-fiberglass composite specimens was measured from 20 to 120/sup 0/C (70 to 250/sup 0/F) using a fused quartz push-rod dilatometer. Billets produced by vacuum impregnating layers of two types of fiberglass cloth with an epoxy resin were core-drilled to produce cylindrical specimens. These were used to study expansion perpendicular and parallel to the fiberglass layers. The dilatometer is held at a preselected temperature until steady-state is indicate… more
Date: January 1, 1986
Creator: McElroy, D. L.; Weaver, F. J. & Bridgman, C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Pipe insulation testers

Description: The steady state temperature distribution of two pipe insulation testers were modeled using the HEATING5 computer code available in the computers at Oak Ridge National Laboratory. One pipe tester, which conformed to the ASTM C335 specification, had the core heater mounted inside a pipe around which the test insulation was placed. Guard heaters were employed to reduce unwanted axial heat conduction. Computer modeling showed that adjustment of the guard heaters was critical for short testers but … more
Date: January 1, 1977
Creator: Jury, S. H.; McElroy, D. L. & Moore, J. P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Thermal conductivity of oriented fibrous carbon insulation from 300 to 1300 K in nitrogen and argon at one atmosphere

Description: From joint meeting of the American Nuclear Society and the Atomic Industrial Forum and Nuclear Energy Exhibition; San Francisco, California, USA (11 Nov 1973). The thermal conductivity, lambda , of three samples of oriented fibrous carbon insulation was measured from 300 to 1300 deg K in a radial heat- flow apparatus. Preparation of the 0.18 g/cm/sup 3/-density samples by a vacuum filtration process from carbon fibers and powdered phenolic resin, characterization of the material after carboniza… more
Date: January 1, 1973
Creator: Godfrey, T. G.; McElroy, D. L. & Ardary, Z. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Thermal conductivity and expansion enhancement associated with formation of the superionic state in SrCl/sub 2/

Description: A second-order phase transition in SrCl/sub 2/ near 1000 K produces superionic conduction and is often called the Bredig transition. Fine-grained, 99% dense, SrCl/sub 2/ samples containing three volume percent TiO/sub 2/ to reduce radiant transport were used to measure the differential thermal expansion coefficient (..cap alpha..) by push-rod dilatometry and the thermal conductivity (lambda) by a radial heat flow method. Both properties show maxima near the Bredig transition. The peak ..cap alp… more
Date: January 1, 1983
Creator: Moore, J. P.; Weaver, F. J.; Graves, R. S. & McElroy, D. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Computer-operated quartz differential dilatometer

Description: From international symposium on thermal expansion of solids; Lake of the Czarks, Missouri, USA (7 Nov 1973). A quartz differential dilatometer was interfaced with a Digital Equipment Corporation PDP-8 computer to automatically measure the thermal expansion of solids from 300 to 1000 K. A Carson-Dice Electronic-Mechanicai Micrometer, readable to 2.5 x 10/sup -6/ cm, was employed for length-change measurements accurate to 2.5 x 10/sup -5/ cm. Calibrated Pt/Pt/ sub 90/Rh/sub 10/ thermocouples were… more
Date: January 1, 1973
Creator: Kollie, T. G.; McElroy, D. L.; Hutton, J. T. & Ewing, W. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Thermal resistance of attic loose-fill insulations decreases under simulated winter conditions

Description: Two absolute techniques were used to measure the thermal resistance of attic loose-fill insulations: the Large Scale Climate Simulator (LSCS) and the Unguarded Thin-Heater Apparatus (UTHA). Two types of attic loose-fill insulations (unbonded and bonded/cubed) were tested under simulated winter conditions. To simulate winter conditions for an attic insulation, the specimens were tested with heat flow up, large temperature differences, and an air gap. The specimens were tested either with a const… more
Date: May 1, 1994
Creator: Graves, R. S.; Wilkes, K. E. & McElroy, D. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Comparison of the Thermal Conductivity, Electrical Resistivity, and Seebeck Coefficient of a Hight-Purity Iron and Armco Iron to 1000 [degrees] C

Description: The thermophysical properties of Armco iron such as thermal conductivity, electrical resistivity, and Seebeck coefficient have been extensively investigated and reviewed up to 1000 degrees C. Few investigations of such properties have been made on high purity iron. If such a study is made using the same apparatus to determine the properties of two purity levels of iron, then several significant intercomparisons can be made which add meaning to data on a single material. The systemic errors for … more
Date: August 11, 1964
Creator: Moore, J. P.; Fulkerson, W. & McElroy, D. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The thermal conductivity of beds of spheres

Description: The thermal conductivities (k) of beds of solid and hollow microspheres were measured using two radial heat flow techniques. One technique provided k-data at 300 K for beds with the void spaces between particles filled with argon, nitrogen, or helium from 5 kPa to 30 MPa. The other technique provided k-data with air at atmospheric pressure from 300 to 1000 K. The 300 K technique was used to study bed systems with high k-values that can be varied by changing the gas type and gas pressure. Such s… more
Date: January 1, 1987
Creator: McElroy, D. L.; Weaver, F. J.; Shapiro, M.; Longest, A. W. & Yarbrough, D. W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Thermal Properties of Grade CGB Graphite

Description: Grade CGB graphite is a nuclear graphite which is basically an extruded petroleum coke bonded with coal tar pitch. No carbon blacks are used and the low-permeation graphite is finished through a series of impregnations and heat treatments with a final heat treatment of all components to 2800 degrees C. A listing of the results obtained is given in Table 1. The results at 51 degrees C are considered questionable. There was a slight contamination of the 90% Pt 10% Rh-Pt thermocouples at 910 degre… more
Date: August 11, 1964
Creator: Moore, J. P. & Godfrey, T. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Industrial thermal insulation: an assessment

Description: A large variety of thermal insulation materials is manufactured for application in various temperature ranges and environments. Additional and improved thermal insulation for steam systems is a key area with immediate energy conservation potential in several of the larger energy-consuming industries. Industrial thermal insulation technology was assessed by obtaining input from a variety of sources including insulation manufacturers, system designers, installers, users, consultants, measurement … more
Date: March 1, 1976
Creator: Donnelly, R. G.; Tennery, V. J.; McElroy, D. L.; Godfrey, T. G. & Kolb, J. O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Laboratory test results on the thermal resistance of polyisocyanurate foamboard insulation blown with CFC-11 substitutes: A cooperative industry/government project

Description: 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 … more
Date: September 1, 1991
Creator: McElroy, D. L.; Graves, R. S.; Yarbrough, D. W. & Weaver, F. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Steady-state and transient results on insulation materials

Description: 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… more
Date: January 1, 1991
Creator: Graves, R.S.; Yarbrough, D.W.; McElroy, D.L. & Fine, H.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Interlaboratory comparison of the horizontal pipe insulation test apparatus up to 350{degrees}C

Description: The purpose of this interlaboratory comparison was to provide information for the precision and bias section in the ASTM Standard Test Method C 335, {open_quotes}Steady-State Heat Transfer Properties of Horizontal Pipe Insulation.{close_quotes} (The text describes the ASTM C 335 test method, the specimens tested and the test protocol). The apparent thermal conductivity of two rigid calcium silicate pipe insulation specimens was measured by eight laboratories. Each laboratory measured both speci… more
Date: December 1, 1993
Creator: Whitaker, T. E.; Graves, R. S.; McElroy, D. L. & Smith, D. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Analysis of heat transfer in building thermal insulation

Description: The measurement of the apparent thermal properties (i.e., conductivity, resistivity, and resistance) of insulation by the guarded hot-plate technique is mathematically simulated on a computer by assuming that coupled conductive and radiative heat transfer occurs in an absorbing and emitting single-phase gray medium. Calculations are performed for insulation extinction coefficients between 0.001 and 1000 ft-/sup 1/, thicknesses between 0.0208 and 1.0 ft, continuous-phase thermal conductivities b… more
Date: December 1, 1980
Creator: Fine, H. A.; Jury, S. H.; Yarbrough, D. W. & McElroy, D. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Thermal Comparator Apparatus for Thermal Conductivity Measurements from 50 to 400 [degrees] C

Description: The experimental details, mathematical models, and typical data for a rapid comparative method for thermal conductivity measurements are presented. The method consists of measuring the temperature change of a small silver sphere after it is brought in contact with a small disk-shaped specimen which was initially at ta higher temperature. This temperature change was calibrated in the range of 50 to 400 degrees C by making measurements on samples of know thermal conductivity. The accuracy of this… more
Date: August 11, 1964
Creator: Kollie, T. G.; McElroy, D. L.; Graves, R. S. & Fulkerson, W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Zirconium metal-water oxidation kinetics. I. Thermometry

Description: A description is given of the thermometry techniques used in the Zirconium Metal--Water Oxidation Kinetics Program. Temperature measurements in the range 900 to 1500$sup 0$C are made in three experimental systems: two oxidation apparatuses and the annealing furnace used in a corollary study of the diffusion of oxygen in $beta$-Zircaloy. Carefully calibrated Pt vs Pt--10 percent Rh thermocouples are employed in all three apparatuses, while a Pt--6 percent Rh vs Pt-- 30 percent Rh thermocouple an… more
Date: February 1, 1976
Creator: Cathcart, J. V.; McElroy, D. L.; Pawel, R. E.; Perkins, R. A.; Williams, R. K. & Yurek, G. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A review of vacuum insulation research and development in the Building Materials Group of the Oak Ridge National Laboratory

Description: 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 o… more
Date: September 1, 1991
Creator: Kollie, T. G.; McElroy, D. L.; Fine, H. A.; Childs, K. W.; Graves, R. S. & Weaver, F. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

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

Description: 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 o… more
Date: September 1, 1991
Creator: Kollie, T. G.; McElroy, D. L.; Fine, H. A.; Childs, K. W.; Graves, R. S. & Weaver, F. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

In-situ and thin-specimen aging of experimental polyisocyanurate roof insulation foamed with alternative blowing agents

Description: This paper reports apparent thermal conductivity (k) values from field and laboratory aging tests on a set of industry-produced, experimental polyisocyanurate (PIR) laminated boardstock foamed with hydrochlorofluorocarbons (HCFCs) as alternatives to chlorofluorocarbon (CFC). The PIR boards were blown with five gases: CFC-11, HCFC-123, HCFC-14lb, and 50/50 and 65/35 blends of HCFC-123/HCFC-14lb. The k-values were determined from 0 to 50{degree}C (30 to 120{degree}F) using techniques that meet AS… more
Date: January 1, 1991
Creator: Christian, J. E.; Courville, G. E.; Graves, R. S.; Linkous, R. L.; McElroy, D. L.; Weaver, F. J. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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