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      Development of Hollow Steel Ball Macro-Encapsulated PCM for Thermal Energy Storage Concrete

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          Abstract

          The application of thermal energy storage with phase change materials (PCMs) for energy efficiency of buildings grew rapidly in the last few years. In this research, octadecane paraffin was served as a PCM, and a structural concrete with the function of indoor temperature control was developed by using a macro-encapsulated PCM hollow steel ball (HSB). The macro-encapsulated PCM-HSB was prepared by incorporation of octadecane into HSBs through vacuum impregnation. Test results showed that the maximum percentage of octadecane carried by HSBs was 80.3% by mass. The macro-encapsulated PCM-HSB has a latent heat storage capacity as high as 200.5 J/g. The compressive strength of concrete with macro-encapsulated PCM-HSB at 28 days ranged from 22 to 40 MPa. The indoor thermal performance test revealed that concrete with macro-encapsulated octadecane-HSB was capable of reducing the peak indoor air temperature and the fluctuation of indoor temperature. It can be very effective in transferring the heating and cooling loads away from the peak demand times.

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          Materials used as PCM in thermal energy storage in buildings: A review

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            Phase change materials for building applications: A state-of-the-art review

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              Paraffin/diatomite composite phase change material incorporated cement-based composite for thermal energy storage

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                Author and article information

                Contributors
                Role: Academic Editor
                Journal
                Materials (Basel)
                Materials (Basel)
                materials
                Materials
                MDPI
                1996-1944
                19 January 2016
                January 2016
                : 9
                : 1
                : 59
                Affiliations
                [1 ]Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, College of Civil Engineering, Shenzhen University, Shenzhen 518060, China; dongzj@ 123456sziit.edu.cn (Z.D.); dzchen@ 123456szu.edu.cn (D.C.); haibowen2-c@ 123456my.cityu.edu.hk (H.W.)
                [2 ]School of Architecture and Built Environment, University of Newcastle, Callaghan, NSW 2308, Australia; patrick.tang@ 123456newcastle.edu.au
                Author notes
                [* ]Correspondence: h.z.cui@ 123456szu.edu.cn ; Tel.: +86-755-2691-6424
                Article
                materials-09-00059
                10.3390/ma9010059
                5456555
                483840f7-0391-4419-90d2-9ae42e7079be
                © 2016 by the authors.

                Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons by Attribution (CC-BY) license http://creativecommons.org/licenses/by/4.0/).

                History
                : 07 December 2015
                : 13 January 2016
                Categories
                Article

                phase change materials,hollow steel ball,macro-encapsulated,thermal properties,mechanical properties,structural-functional integrated concrete

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                2019-07-20 14:08 UTC
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