Dynamic heat transfer and thermal performance evaluation of PCM-doped hybrid hollow plaster panels for buildings

Seunghwan Wi, Sungwoong Yang, Jongki Lee, Seong Jin Chang, Sumin Kim

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The thermal performance of hybrid hollow plaster panels (HHPPs) was analyzed using the amount of phase change material (PCM) injection as a variable according to the size of the hollow area. This study focuses on n-octadecane, an organic PCM that is used for storing latent heat during the phase change range and to improve thermal transmittance using exfoliated graphite nanoplatelets (xGnPs), which have a high thermal conductivity. When xGnP is applied to n-octadecane, the thermal conductivity improves by 225%, and it is confirmed that the thermal storage or release of the phase change material is an active reaction. The thermo-physical properties of the xGnP and n-octadecane composites were analyzed using a thermal conductivity analyzer (TCi) and differential scanning calorimetry (DSC). The thermal stability of PCM was analyzed over a long duration of 10,000 thermal cycles. The thermal performance of the PCM/plaster composite panel using the dynamic heat transfer device was determined. The peak temperature through the HHPP significantly reduced by 3.8 ℃ in an internal room, and the time-lag effect was confirmed to be 1.56 h. The results indicate that up to 36.6 J/m2 of thermal energy was stored in the 26-Px/O, corresponding to approximately 247% of the available thermal energy of the reference panel.

Original languageEnglish
Pages (from-to)428-436
Number of pages9
JournalJournal of Hazardous Materials
Volume374
DOIs
Publication statusPublished - 2019 Jul 15

Fingerprint

Plaster
Phase change materials
heat transfer
Hot Temperature
Heat transfer
thermal conductivity
Thermal conductivity
Thermal Conductivity
Thermal energy
Graphite
Latent heat
transmittance
calorimetry
Composite materials
graphite
energy
Differential scanning calorimetry
Thermodynamic stability
Thermodynamic properties
physical property

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution
  • Health, Toxicology and Mutagenesis

Cite this

Wi, Seunghwan ; Yang, Sungwoong ; Lee, Jongki ; Chang, Seong Jin ; Kim, Sumin. / Dynamic heat transfer and thermal performance evaluation of PCM-doped hybrid hollow plaster panels for buildings. In: Journal of Hazardous Materials. 2019 ; Vol. 374. pp. 428-436.
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abstract = "The thermal performance of hybrid hollow plaster panels (HHPPs) was analyzed using the amount of phase change material (PCM) injection as a variable according to the size of the hollow area. This study focuses on n-octadecane, an organic PCM that is used for storing latent heat during the phase change range and to improve thermal transmittance using exfoliated graphite nanoplatelets (xGnPs), which have a high thermal conductivity. When xGnP is applied to n-octadecane, the thermal conductivity improves by 225{\%}, and it is confirmed that the thermal storage or release of the phase change material is an active reaction. The thermo-physical properties of the xGnP and n-octadecane composites were analyzed using a thermal conductivity analyzer (TCi) and differential scanning calorimetry (DSC). The thermal stability of PCM was analyzed over a long duration of 10,000 thermal cycles. The thermal performance of the PCM/plaster composite panel using the dynamic heat transfer device was determined. The peak temperature through the HHPP significantly reduced by 3.8 ℃ in an internal room, and the time-lag effect was confirmed to be 1.56 h. The results indicate that up to 36.6 J/m2 of thermal energy was stored in the 26-Px/O, corresponding to approximately 247{\%} of the available thermal energy of the reference panel.",
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Dynamic heat transfer and thermal performance evaluation of PCM-doped hybrid hollow plaster panels for buildings. / Wi, Seunghwan; Yang, Sungwoong; Lee, Jongki; Chang, Seong Jin; Kim, Sumin.

In: Journal of Hazardous Materials, Vol. 374, 15.07.2019, p. 428-436.

Research output: Contribution to journalArticle

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