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Numerical assessing energy performance for building envelopes with phase change material
Author(s) -
Ji Ru,
Zou Zehui,
Chen Meihan,
Zheng Yaxian,
Qu Shilin
Publication year - 2018
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.4293
Subject(s) - phase change , energy performance , phase change material , building envelope , energy (signal processing) , phase (matter) , materials science , architectural engineering , environmental science , engineering physics , mechanics , structural engineering , mechanical engineering , engineering , nuclear engineering , efficient energy use , physics , meteorology , mathematics , electrical engineering , statistics , quantum mechanics , thermal
Summary In hot climate, phase change material (PCM) can be incorporated into building envelopes to reduce heat gain through the building envelopes and therefore reduce its cooling demand. In this study, the energy performance of building envelopes integrated with PCM has been explored using a popular dynamic building performance simulation package, EnergyPlus, and the energy saving mechanism of PCM was investigated. The simulation results reflected that PCM could effectively help to reduce the building's annual energy consumption by 20.9% for Guangzhou, China. In addition, for the Guangzhou city, 27°C transition temperature, smaller thermal conductivity of roof, and higher amount of PCM can all help to improve the building's energy performance. Additionally, it is suggested that in real building development/retrofit projects, the selection of PCM needs to be based on both their thermal properties and the local climatic conditions of the building.