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Macro-encapsulation of heat storage phase-change materials for use in residential buildings. Second quarterly progress report, December 29, 1976--March 29, 1977

Description: Objectives of the work are to assess the feasibility of macro-encapsulated phase change materials (PCM's) for residential solar systems and to develop and evaluate such materials. Encapsulant materials under consideration are multilayer flexible plastic films, steel cans, and plastic bottles. PCM's under study are Mg(NO/sub 3/)/sub 2/.6H/sub 2/O, naphthalene-benzoic acid eutectic, stearic acid, Mg(NO/sub 3/)/sub 2/.6H/sub 2/O-NH/sub 4/NO/sub 3/ eutectic, and CaCl/sub 2/.6H/sub 2/O. Compatibilit… more
Date: May 1, 1977
Creator: Lane, G. A.; Hartwick, P. B. & Rossow, H. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Macro-encapsulation of heat storage phase-change materials for use in residential buildings. Third quarterly progress report, March 29, 1977--June 29, 1977

Description: Objectives are to assess the feasibility of macro-encapsulated PCMs for residential solar systems and to develop and evaluate such materials. Encapsulant materials under consideration are multilayer flexible plastic films, steel cans, and plastic bottles. PCMs under study are Mg(NO/sub 3/)/sub 2/.6H/sub 2/O, naphthalene-benzoic acid eutectic, Mg(NO/sub 3/)/sub 2/.6H/sub 2/O-NH/sub 4/NO/sub 3/ eutectic, and CaCl/sub 2/.6H/sub 2/O. Compatibility studies between the PCMs and encapsulant materials … more
Date: August 1, 1977
Creator: Lane, G. A.; Hartwick, P. B. & Rossow, H. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Macro-encapsulation of heat storage phase-change materials for use in residential buildings. Fifth quarterly progress report, September 29, 1977-December 29, 1977

Description: Objectives are to assess the feasibility of macro-encapsulated PCM's for residential solar systems, to develop and evaluate such materials. Encapsulant materials under consideration are multilayer flexible plastic films, steel cans, and plastic bottles. PCM's under study are Mg(NO/sub 3/)/sub 2/.6H/sub 2/O, stearic acid, Mg(NO/sub 3/)/sub 2/.6H/sub 2/O-NH/sub 4/NO/sub 3/. A study of the storage capability of CaCl/sub 2/.6H/sub 2/O encapsulated in polyethylene bottles has been completed.
Date: March 1, 1978
Creator: Lane, G. A.; Warner, G. L.; Hartwick, P. B. & Rossow, H. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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EXPERIMENTAL PROBLEMS IN THE USE OF A POLARIZED PROTONTARGET

Description: I have understood my assignment as a review of some of the work done in high-energy physics with polarized proton targets and a description of some of the special problems connected with polarized targets. Most of my report will be based on the polarized target that I am most familiar with--that constructed by Jeffries, Schultz, Shapiro, and myself. This target is no longer unique; in fact, it is now somewhat old-fashioned in some respects. Other polarized proton targets are in operation at CER… more
Date: September 9, 1966
Creator: Chamberlain, Owen
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Macro-encapsulation of heat storage phase-change materials for use in residential buildings. Sixth quarterly progress report, December 29, 1977-March 29, 1978

Description: Objectives are to assess the feasibility of macro-encapsulated PCM's for residential solar systems and to develop and evaluate such materials. Encapuslant materials under consideration are multilayer flexible plastic films, steel cans, and plastic bottls. Studies of the storage capability of CaCl/sub 2/ 6H/sub 2/O encapsulated in polyethylene bottles and Mg(NO/sub 3/)/sub 2/6H/sub 2/O/NH/sub 4/NO/sub 3/ eutectic, encapsulated in flexible plastic film packages.
Date: May 1, 1978
Creator: Lane, G. A.; Warner, G. L.; Hartwick, P. B. & Rossow, H. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Macro-encapsulation of heat storage phase-change materials for use in residential buildings. Final report, September 29, 1976-September 6, 1978

Description: Objectives are to assess the feasibility of macro-encapsulated PCM's for residential solar systems, to develop and evaluate such materials. Encapsulant materials under consideration are multilayer flexible plastic films, steel cans, and plastic bottles. Studies were done in a storage test unit on: CaCl/sub 2/.6H/sub 2/O encapsulated in polyethylene bottles, Mg(NO/sub 3/)/sub 2/6H/sub 2/O in steel cans, Mg(NO/sub 3/)/sub 2/6H/sub 2/O/NH/sub 4/NO/sub 3/ eutectic encapsulated in flexible plastic f… more
Date: November 1, 1978
Creator: Lane, G. A.; Kott, A. C.; Warner, G. L.; Hartwick, P. B. & Rossow, H. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Macro-encapsulation of heat storage phase-change materials for use in residential buildings. Seventh quarterly progress report, March 29, 1978-June 29, 1978

Description: Objectives are to assess the feasibility of macro-encapsulated PCM's for residential solar systems, to develop and evaluate such materials. Encapsulant materials under consideration are multilayer flexible plastic films, steel cans, and plastic bottles. Studies of the storage capability of CaCl/sub 2/.6H/sub 2/O encapsulated in polyethylene bottles, Mg(NO/sub 3/)/sub 2/6H/sub 2/O in steel cans, and Mg(NO/sub 3/)/sub 2/6H/sub 2/O/NH/sub 4/NO/sub 3/ eutectic, encapsulated in flexible plastic film… more
Date: August 1, 1978
Creator: Lane, G. A.; Warner, G. L.; Hartwick, P. B. & Rossow, H. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Use of extractive distillation to produce concentrated nitric acid

Description: Concentrated nitric acid (> 95 wt %) is needed for the treatment of off-gases from a fuels-reprocessing plant. The production of concentrated nitric acid by means of extractive distillation in the two-pot apparatus was studied to determine the steady-state behavior of the system. Four parameters, EDP volume (V/sub EDP/) and temperature (T/sub EDP/), acid feed rate, and solvent recycle, were independently varied. The major response factors were percent recovery (CPRR) and product purity (CCP). S… more
Date: April 1, 1981
Creator: Campbell, P.C.; Griffin, T.P. & Irwin, C.F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A solubility model for amorphous silica in concentrated electrolytes

Description: Silica is one of the major constituents of the earth`s crust and is ubiquitously present in most natural materials. The solubility of silica and other silica-containing compounds is, therefore, of primary concern in geochemistry and in chemical processing applications where silica scale formation, resulting from changes in temperature and electrolyte composition, can cause problems in process design and operation. This paper describes the development of an aqueous thermodynamic model for accura… more
Date: August 1, 1994
Creator: Felmy, A. R.; Schroeder, C. C. & Mason, M. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Phase Behavior of Aqueous Na-K-Mg-Ca-CI-NO3 Mixtures: Isopiestic Measurements and Thermodynamic Modeling

Description: A comprehensive model has been established for calculating thermodynamic properties of multicomponent aqueous systems containing the Na{sup +}, K{sup +}, Mg{sup 2+}, Ca{sup 2+}, Cl{sup -}, and NO{sub 3}{sup -} ions. The thermodynamic framework is based on a previously developed model for mixed-solvent electrolyte solutions. The framework has been designed to reproduce the properties of salt solutions at temperatures ranging from the freezing point to 300 C and concentrations ranging from infini… more
Date: September 14, 2006
Creator: Gruszkiewiez, Miroslaw S.; Palmer, Donald A.; Springer, Ronald D.; Wang, Peiming & Anderko, Andrzej
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Use of precalciners to remove alkali from raw materials in the cement industry. Quarterly technical progress report, November 1979-January 1980

Description: Experiments using the sulfate fusion technique have continued. High degrees of alkali removal have been achieved using CaSO/sub 4/ admixtures with added CaCl/sub 2/ and Mg(NO/sub 3/)/sub 2/. The presence of Mg/sup 2 +/ or Cl/sup -/ in the mixtures did not affect the phase separation significantly. There was considerable evidence for preferential migration of K/sup +/ into the sulfate phase, relative to Na/sup +/. A new technique, the powder drop method, was used to attempt to more closely simul… more
Date: March 1, 1980
Creator: Gartner, Ellis M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Using Aspen simulation package to determine solubility of mixed salts in TRU waste evaporator bottoms

Description: Nitric acid from plutonium process waste is a candidate for waste minimization by recycling. Process simulation software packages, such as Aspen, are valuable tools to estimate how effective recovery processes can be, however, constants in equations of state for many ionic components are not in their data libraries. One option is to combine single salt solubility`s in the Aspen model for mixed salt system. Single salt solubilities were regressed in Aspen within 0.82 weight percent of literature… more
Date: March 1998
Creator: Hatchell, J. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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In-situ temperature calibration below 1 K using the {mu}{sup +} Knight shift in CMN

Description: The authors present {mu}{sup +} paramagnetic shift measurements between 12 K and about 65 mK in cerium magnesium nitrate (CMN) to investigate its utility as an in-situ temperature calibration source for low temperature {mu}SR experiments. CMN is a salt which exhibits Curie-law susceptibility to temperatures as low as 5 mK. The {mu}{sup +} Knight shift is measured to be (1.46 {+-} 0.03) {times} 10{sup {minus}3}/T + (0.004 {+-} 0.02) {times} 10{sup {minus}3}, corresponding to a transferred hyperf… more
Date: June 1, 1996
Creator: Heffner, R. H.; Le, L. P.; Nieuwenhuys, G. J.; MacLaughlin, D. E.; Amato, A. & Baines, C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Vapor-liquid equilibrium of the Mg(NO/sub 3/)/sub 2/-HNO/sub 3/-H/sub 2/O system

Description: The vapor-liquid equilibrium of the Mg(NO/sub 3/)/sub 2/-HNO/sub 3/-H/sub 2/O system in concentrations of 0 to 70 wt % Mg(NO/sub 3/)/sub 2/ and 0 to 75 wt % HNO/sub 3/ at atmospheric pressure was correlated by two approaches. One was based on a dissociation equilibrium expression in which the activities of the reacting species (HNO/sub 3/, NO/sub 3//sup -/, and H/sup +/) were approximated with mole fractions. The activity coefficients of the undissociated HNO/sub 3/ and H/sub 2/O were correlate… more
Date: June 1, 1983
Creator: Thompson, Brian E.; Derby, Jeffrey J. & Stalzer, Evelyn H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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