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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.
정수광(Jeong Su-Gwang),전지수(Jeon Jisoo),김수민(Kim Sumin) 한국태양에너지학회 2012 한국태양에너지학회 학술대회논문집 Vol.2012 No.3
Thermal energy storage (TES) 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 examined a way to incorporate MPCMs with building materials through application for wood -based flooring. Wood-based flooring is commonly used for floor finish materials of residential buildings in Korea. However, wood-based flooring has not performed the characteristic of heat storage. This study is aimed at manufacturing high thermal efficiency wood flooring by increasing its heat storage using MPCM. As a result, this study confirmed that MPCM is dispersed well in adhesive through the scanning electron microscopy analysis. From the differential scanning calorimetry analysis, it can be confirmed that this composite has the characteristic of a thermal energy storage material. Also, we analyzed how this composition was formed by physical combination through the Fourier transform infrared analysis. Also, we confirmed the bonding strength of the material by using the universal testing machine.
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.