TY - JOUR
T1 - Liquid Thermo-Responsive Smart Window Derived from Hydrogel
AU - Zhou, Yang
AU - Wang, Shancheng
AU - Peng, Jinqing
AU - Tan, Yutong
AU - Li, Chuanchang
AU - Boey, Freddy Yin Chiang
AU - Long, Yi
N1 - Publisher Copyright:
© 2020 Elsevier Inc.
Funding Information:
The Principal Investigator of this project (Y.L.) wishes to thank Sino-Singapore International Joint Research Institute for funding support. This research was supported by Singapore Ministry of Education (MOE) Academic Research Fund Tier one RG103/19 and the National Research Foundation, Prime Minister’s Office, Singapore under its Campus for Research Excellence and Technological Enterprise (CREATE) program. Y.Z. and Y.L. sincerely thank the generous funding support from Prof. Freddy Y.C. Boey.
PY - 2020/11/18
Y1 - 2020/11/18
N2 - Buildings account for 40% of global energy consumption, while windows are the least energy-efficient part of buildings. Conventional smart windows only regulate solar transmission. For the first time, we developed high thermal energy storage thermo-responsive smart window (HTEST smart window) by trapping the hydrogel-derived liquid within glasses. The excellent thermo-responsive optical property (90% of luminous transmittance and 68.1% solar modulation) together with outstanding specific heat capacity of liquid gives the HTEST smart window excellent energy conservation performance. Simulations suggested that HTEST window can cut off 44.6% heating, ventilation, and air-conditioning (HVAC) energy consumption compared with the normal glass in Singapore. In outdoor demonstrations, the HTEST smart window showed promising energy-saving performance in summer daytime. Compared with conventional energy-saving glasses, which need expensive equipment, the thermo-responsive liquid-trapped structure offers a disruptive strategy of easy fabrication, good uniformity, and scalability, together with soundproof functionality that opens an avenue for energy-saving buildings and greenhouses.
AB - Buildings account for 40% of global energy consumption, while windows are the least energy-efficient part of buildings. Conventional smart windows only regulate solar transmission. For the first time, we developed high thermal energy storage thermo-responsive smart window (HTEST smart window) by trapping the hydrogel-derived liquid within glasses. The excellent thermo-responsive optical property (90% of luminous transmittance and 68.1% solar modulation) together with outstanding specific heat capacity of liquid gives the HTEST smart window excellent energy conservation performance. Simulations suggested that HTEST window can cut off 44.6% heating, ventilation, and air-conditioning (HVAC) energy consumption compared with the normal glass in Singapore. In outdoor demonstrations, the HTEST smart window showed promising energy-saving performance in summer daytime. Compared with conventional energy-saving glasses, which need expensive equipment, the thermo-responsive liquid-trapped structure offers a disruptive strategy of easy fabrication, good uniformity, and scalability, together with soundproof functionality that opens an avenue for energy-saving buildings and greenhouses.
KW - energy saving
KW - hydrogel
KW - liquid window
KW - phase change material
KW - smart window
KW - thermal energy storage
KW - thermochromic
UR - http://www.scopus.com/inward/record.url?scp=85092221031&partnerID=8YFLogxK
U2 - 10.1016/j.joule.2020.09.001
DO - 10.1016/j.joule.2020.09.001
M3 - Journal article
AN - SCOPUS:85092221031
SN - 2542-4351
VL - 4
SP - 2458
EP - 2474
JO - Joule
JF - Joule
IS - 11
ER -
