Evaluation of Energy Performance and Thermal Comfort Considering the Heat Storage Capacity and Thermal Conductivity of Biocomposite Phase Change Materials
- Authors
- Jeong, Su-Gwang; Lee, Taemin; Lee, Jeonghun
- Issue Date
- Dec-2021
- Publisher
- MDPI
- Keywords
- phase change material; thermal conductivity; heat storage; energy simulation; thermal comfort
- Citation
- PROCESSES, v.9, no.12
- Journal Title
- PROCESSES
- Volume
- 9
- Number
- 12
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/41948
- DOI
- 10.3390/pr9122191
- ISSN
- 2227-9717
- Abstract
- The application of phase change materials (PCMs) has been verified as an effective strategy for improving energy efficiency and reducing greenhouse gas emissions. Biocomposite PCMs (Bc-PCM) exhibit large latent heat, chemical stability, and a wide temperature range. In this study, thermal conductivity improved Bc-PCM (TBc-PCM) was made via vacuum impregnation with graphene nanoplatelets (GNPs). Chemical stability analysis and thermal performance analyses of the Bc-PCM and TBc-PCM were carried out as well as building energy simulations and thermal comfort analyses. Our results show Bc-PCM showed a higher heat storage capacity and enthalpy value compared to TBc-PCM. TBc-PCM exhibited a 378% increase in thermal conductivity compared to Bc-PCM. Building energy simulation results revealed that annual heating and cooling energy consumption decreased as the thickness of the PCM layer increased. In addition, the Bc-PCM with a larger PCM capacity was more effective in reducing energy consumption during the heating period. On the other hand, the cooling energy reduction effect was greater when TBc-PCM with high thermal conductivity was applied because of the high heat transfer during the cooling period. Thermal comfort evaluation revealed it was more comfortable when PCM was applied.
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Collections - College of Engineering > School of Architecture > 1. Journal Articles
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