Broadband Light Management with Thermochromic Hydrogel Microparticles for Smart Windows
Name
JOULE-D-18-00463_Final.pdf
Description
Accepted version
Size
2.02 MB
Format
Adobe PDF
Checksum (MD5)
d3620bf7b0e9d387263c5157e452b70d
Author(s)
Li, Xin-Hao
Liu, Chang
Feng, Shien-Ping
Fang, Nicholas Xuanlai
Date Issued
2019
Journal
Joule
Publisher
Elsevier BV
Version
Author's final manuscript
Abstract
© 2018 Intelligent control of solar irradiance through windows is promising to reduce building energy consumption by at least 1.055 × 10 15 kJ/year in the United States. Light management with thermochromic smart windows holds practical significance due to their autonomous system and simplicity of the device. However, the conventional thermochromic material (VO 2 ) faces scientific challenges with a high phase-transition temperature (68°C) and poor thermochromic performance. Temperature-responsive hydrogel emerges as a promising alternative, whereby light management could be pursued by maneuvering the light-scattering behaviors. This work reports the strategy to explore the thermochromic performance of co-polymerized hydrogel microparticles with the aid of tailoring particle size and internal structure. The solar modulation was effectively extended into the infrared region, and an unprecedented solar transmittance modulation of 81.3% was achieved at ∼32°C by our hydrogel thermochromic device with great scalability and stability.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Creative Commons Attribution-NonCommercial-NoDerivs License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1016/J.JOULE.2018.10.019
