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Title: Encapsulation of phase change materials in concrete masonry construction. Progress report No. 3, June 1978-September 1978. Final report

Abstract

Work performed at Brookhaven National Laboratory on Union Carbide Nuclear Division, ORNL contract number 19Y-14279V, Encapsulation of Phase Change Materials (PCM) in Concrete Masonry Construction, is summarized. Due to program termination, the report also constitutes the final report of the program. Thermal analysis of the system Na/sub 2/CO/sub 3/.10H/sub 2/O has shown that after separation upon melting, the heat of fusion is considerably higher than Na/sub 2/SO/sub 4/.10H/sub 2/O. The system NaCO/sub 3/-K/sub 2/CO/sub 3/-H/sub 2/O has been found to be unsuitable for PCM use. A eutectic in the MgCl/sub 2/-CaCl/sub 2/-H/sub 2/O is under consideration. It exhibits a high heat of fusion and low transition temperature range. Cylindrical shells have been cast using polymer concrete. The shells were subsequently filled with PCM and thermally cycled. No leaking of PCM occurred. Thermal measurements on PCM composite materials were continued.

Authors:
Publication Date:
Research Org.:
Brookhaven National Lab., Upton, NY (USA)
OSTI Identifier:
5776816
Report Number(s):
BNL-51100
DOE Contract Number:
EY-76-C-02-0016
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; BUILDING MATERIALS; HEAT STORAGE; CONCRETES; PHASE CHANGE MATERIALS; ENCAPSULATION; LATENT HEAT STORAGE; SODIUM CARBONATES; WALLS; ALKALI METAL COMPOUNDS; CARBON COMPOUNDS; CARBONATES; ENERGY STORAGE; MATERIALS; OXYGEN COMPOUNDS; SODIUM COMPOUNDS; STORAGE; 320100* - Energy Conservation, Consumption, & Utilization- Buildings

Citation Formats

Sansone, M J. Encapsulation of phase change materials in concrete masonry construction. Progress report No. 3, June 1978-September 1978. Final report. United States: N. p., 1978. Web. doi:10.2172/5776816.
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Sansone, M J. Encapsulation of phase change materials in concrete masonry construction. Progress report No. 3, June 1978-September 1978. Final report. United States. doi:10.2172/5776816.
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Sansone, M J. Sun . "Encapsulation of phase change materials in concrete masonry construction. Progress report No. 3, June 1978-September 1978. Final report". United States. doi:10.2172/5776816. https://www.osti.gov/servlets/purl/5776816.
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@article{osti_5776816,
title = {Encapsulation of phase change materials in concrete masonry construction. Progress report No. 3, June 1978-September 1978. Final report},
author = {Sansone, M J},
abstractNote = {Work performed at Brookhaven National Laboratory on Union Carbide Nuclear Division, ORNL contract number 19Y-14279V, Encapsulation of Phase Change Materials (PCM) in Concrete Masonry Construction, is summarized. Due to program termination, the report also constitutes the final report of the program. Thermal analysis of the system Na/sub 2/CO/sub 3/.10H/sub 2/O has shown that after separation upon melting, the heat of fusion is considerably higher than Na/sub 2/SO/sub 4/.10H/sub 2/O. The system NaCO/sub 3/-K/sub 2/CO/sub 3/-H/sub 2/O has been found to be unsuitable for PCM use. A eutectic in the MgCl/sub 2/-CaCl/sub 2/-H/sub 2/O is under consideration. It exhibits a high heat of fusion and low transition temperature range. Cylindrical shells have been cast using polymer concrete. The shells were subsequently filled with PCM and thermally cycled. No leaking of PCM occurred. Thermal measurements on PCM composite materials were continued.},
doi = {10.2172/5776816},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 1978},
month = {Sun Jan 01 00:00:00 EST 1978}
}
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Technical Report:
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DOI:  10.2172/5776816
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  • The improvement in heat capacity of potential building materials by incorporation of phase change materials (PCM's) has been demonstrated by thermal measurements. Thermal analysis of PCM's is continuing in order to identify the most promising systems. Particular attention is being focused on polyethylene glocols and MgCl/sub 2/--CaCl/sub 2/--H/sub 2/O eutectic systems although other materials are still under consideration. Efforts to encapsulate phase change materials in porous aggregate are continuing. Non-leaking coatings for the aggregate and for the PCM matrix materials are under development. Thermal analysis capabilities have been established and include DSC, TGA, a thermal comparator for conductivity measurements, andmore » a heat-flow calorimeter for heat capacity measurements on large samples. Thermal measurements on PCM composite materials are continuing.« less

  • The improvement of thermal energy storage capacity of potential building materials by incorporation of phase change materials (PCM's) is being explored. Both inorganic salt hydrates and organic systems are potentially useful PCM's for encapsulation in concrete, polymer concrete, and/or polymer-impregnated concrete matrices. It is felt at this time that most PCM's melting at or above 40/sup 0/C can be encapsulated in large quantities in polymer concrete. Methods relating to the encapsulation of lower melting materials in various matrices are currently being studied.

  • ; ; ; ...
    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 packages, have been completed in the sub-scale storage test unit. The next PCM to be studied is NH/sub 4/Br/urea eutectic in polypropylene bottles.

  • ; ; ; ...
    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 film packages, NH/sub 4/Br/urea eutectic in polypropylene bottles, and a combined bed of CaCl/sub 2/.6H/sub 2/O and Mg(NO/sub 3/)/sub 2/6H/sub 2/O/NH/sub 4/NO/sub 3/ eutectic. In most cases, charge and discharge capacities in excessmore » of 90% of theory were obtained. Several designs using encapsulated PCM were analyzed, one was selected, and preliminary designs were developed for a demonstration project.« less

  • ; ;
    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, 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. A test device has been constructed, and is being used to study the storage capability of CaCl/sub 2/ 6H/sub 2/O encapsulated in polyethylene bottles.