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축열 성능 향상 SSPCM 혼합 콘크리트 제조 및 열적특성 분석
정수광(Jeong Su-Gwang),장성진(Chang Seong Jin),임재한(Lim Jae-Han),김희선(Kim Hee-Sun),류성룡(Ryu Seong-Ryong),김수민(Kim Sumin) 한국태양에너지학회 2015 한국태양에너지학회 논문집 Vol.35 No.1
n-octadecnae based shape stabilized phase change material (SSPCM) was prepared by using vacuum impregnation method. And an exfoliated graphite nanoplate (xGnP) which has high thermal conductivity properties is used as a PCM container. And then we made heat storage concretes which contains SSPCM for reducing heating and cooling load in buildings. In the prepararion process, the SSPCM was mixed to a concrete as 10, 20 and 30wt% of cement weight. The thermal properties and chemical properties of heat storage concrete were analyzed from Scanning electron microscope (SEM), Fourier transformation infrared spectrophotometer (FT-IR), Deferential scanning calorimeter (DSC), Thermogravimetric analysis (TGA) and TCi thermal conductivity analyzer. And we conducted surface temperature analysis of SSPCM and xGnP by using heat plate and insulation mold.
열효율 향상을 위한 xGnP가 혼합된 SSPCM 제조 및 평가
정수광(Jeong, Su-Gwang),김석환(Kim, Sughwan),이정훈(Lee, Jeong-Hun),임재한(Lim, Jae-Han),김수민(Kim, Sumin) 한국건축친환경설비학회 2012 한국건축친환경설비학회 학술발표대회 논문집 Vol.2012 No.10
This paper deals with the thermal performances of Shape-Stabilized Phase Change Materials (SSPCM) for energy saving in various fields. This study enhanced thermal properties of SSPCM by using exfoliated graphite nanoplatelets (xGnP). SSPCM, which contains the xGnP, was prepared by mixing and melting techniques for high dispersibility, thermal conductivity and latent heat storage. In the experiment, we used hexadecane, octadecane and paraffin as Phase Change Materials (PCMs), and they have 254.7J/g, 247.6J/g and 144.6J/g of latent heat capacity, and melting points of 20.84?C, 30.4?C and 57.09?C, respectively. The characteristics of SSPCMs were determined by using SEM, DSC, FTIR,and TGA.
목질바닥재 적용을 위한 Microencapsulated PCM의 성능평가
정수광(Jeong Su-Gwnag),전지수(Jeon Jisoo),서정기(Seo Junki),신유정(Shin You Jung),김수민(Kim Sumin) 한국건축친환경설비학회 2011 한국건축친환경설비학회 학술발표대회 논문집 Vol.2011 No.10
Thermal energy storage systems using Microencapsulated phase change material (MPCM) have been recognized as one of the most advanced energy technologies in enhancing the energy efficiency and sustainability of buildings. We studied to incorporate MPCMs with building materials through application for adhesive of wood-based flooring. Wood-based flooring is common used for floor finish materials of residential building in Korea. This study is aimed at making high thermal efficiency wood-based flooring by increasing its heat storage using MPCM which has 27-31℃ phase change temperature range. To increasing the heat storage of wood-based flooring, MPCM was used with adhesive for surface bonding of wood-based flooring. MPCM of 3, 6, 7, 10wt% was added to adhesive which was made by the 1:1 ratio mixed epoxy resin consist base with hardener. MPCM/adhesive composite were prepared by the stirring of MPCM in liquid state adhesive. As a result, scanning electron microscopy (SEM) morphology showed uniform dispersion of MPCM in the adhesive. This MPCM/adhesive composite has the characteristic of heat storage by analyzing differential scanning calorimetry (DSC) measurement. And we analyzed this composition was formed by physical combination through the Fourier transform infrared (FT-IR).
건축물에너지 저감을 위한 Phase change material(PCM) 적용에 대한 고찰
정수광(Jeong Su-Gwang),전지수(Jeon Jisoo),서정기(Seo Jungki),김수민(Kim Sumin) 한국건축친환경설비학회 2011 한국건축친환경설비학회 논문집 Vol.5 No.1
Recently, increasing the energy consumption has being environmental issue in the world. Also energy consumption ratio of building in total energy consumption is getting increasing. Therefore, development of building materials needs for energy saving. PCM (Phase change material) has a good potential because it stored heat energy as a form of latent heat during phase change. However, application of PCM as itself for building material is difficult due to its phase stability of liquid state. It can overcome through the microencapsulated PCM (MEPCM). A many studies had analyzed that PCM has good potential as application for various fields. This paper indicates the characterization of PCM for application of building material through the microencapsulated PCM.