TY - JOUR
T1 - Comprehensive analysis on building performance enhancement based on selective split-band modulated adaptive thermochromic windows
AU - Wu, Shuangdui
AU - Sun, Hongli
AU - Song, Junkang
AU - Liu, Sai
AU - Shi, Shaohang
AU - Tso, ChiYan
AU - Lin, Borong
PY - 2024/10/15
Y1 - 2024/10/15
N2 - Thermochromic technology has exciting potential for building applications as it passively modulates its solar transmittance. Existing smart window technologies lead to unnecessary increases in lighting energy consumption during spectral modulation and limited application scenarios. Therefore, spectrally selective modulation is a key direction to improve the performance of smart windows. In this paper, a three-story office building is established in EnergyPlus, and how the characteristic parameters and spectral modulation properties affect the effectiveness of thermochromic windows are thoroughly investigated through actual spectra and hypothetical split-band modulation spectra. A comprehensive human-centered evaluation system is proposed, multiple light zones are divided to investigate in detail the light and thermal environment and comfort performance of office spaces with different orientations of near-window areas and verify the energy-saving effect. The impact of thermochromic adaptive windows on building part loads and equipment efficiency is discussed and the matching of this passive technology with renewable photovoltaics is briefly mentioned. Based on the two-way synergistic perspective of materials and buildings, the results inform the application of smart windows in specific scenarios, throwing light on more cross-cutting research. © 2024 Elsevier Ltd
AB - Thermochromic technology has exciting potential for building applications as it passively modulates its solar transmittance. Existing smart window technologies lead to unnecessary increases in lighting energy consumption during spectral modulation and limited application scenarios. Therefore, spectrally selective modulation is a key direction to improve the performance of smart windows. In this paper, a three-story office building is established in EnergyPlus, and how the characteristic parameters and spectral modulation properties affect the effectiveness of thermochromic windows are thoroughly investigated through actual spectra and hypothetical split-band modulation spectra. A comprehensive human-centered evaluation system is proposed, multiple light zones are divided to investigate in detail the light and thermal environment and comfort performance of office spaces with different orientations of near-window areas and verify the energy-saving effect. The impact of thermochromic adaptive windows on building part loads and equipment efficiency is discussed and the matching of this passive technology with renewable photovoltaics is briefly mentioned. Based on the two-way synergistic perspective of materials and buildings, the results inform the application of smart windows in specific scenarios, throwing light on more cross-cutting research. © 2024 Elsevier Ltd
KW - Building application performance
KW - Comprehensive performance evaluation
KW - Partial load ratio
KW - Spectrally selective
KW - Split-band modulation
KW - Thermochromic smart windows
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U2 - 10.1016/j.apenergy.2024.123754
DO - 10.1016/j.apenergy.2024.123754
M3 - RGC 21 - Publication in refereed journal
SN - 0306-2619
VL - 372
JO - Applied Energy
JF - Applied Energy
M1 - 123754
ER -
