TY - JOUR
T1 - Mechanically Switchable Multifunctional Device for Regulating Passive Radiative Cooling and Solar Heating
AU - Tao, Shuang
AU - Han, Jingtian
AU - Xu, Ying
AU - Fang, Zhenggang
AU - Ni, Yaru
AU - Fang, Liang
AU - Lu, Chunhua
AU - Xu, Zhongzi
N1 - Publisher Copyright:
© 2023 American Chemical Society.
PY - 2023/4/5
Y1 - 2023/4/5
N2 - Energy consumption during cooling and heating poses a great threat to the development of society. Thermal regulation, as switchable cooling and heating in a single platform, is therefore urgently demanded. Herein, a switchable multifunctional device integrating heating, cooling, and latent energy storage was proposed for temperature regulation and window energy saving for buildings. A radiative cooling (RC) emitter, a phase-change (PC) membrane, and a solar-heating (SH) film were connected layer by layer to form a sandwich structure. The RC emitter exhibited selective infrared emission (emissivity in the atmospheric window: 0.81, emissivity outside the atmospheric window: 0.39) and a high solar reflectance (0.92). Meanwhile, the SH film had a high solar absorptivity (0.90). More importantly, both the RC emitter and the SH film displayed excellent wear resistance and UV resistance. The PC layer can control the temperature at a steady state under dynamic weather conditions, which could be verified by indoor and outdoor measurements. The thermal regulation performance of the multifunctional device was also verified by outdoor measurements. The temperature difference between the RC and SH models of the multifunctional device could reach up to 25 °C. The as-constructed switchable multifunctional device is a promising candidate for alleviating the cooling and heating energy consumption and realizing energy saving for windows.
AB - Energy consumption during cooling and heating poses a great threat to the development of society. Thermal regulation, as switchable cooling and heating in a single platform, is therefore urgently demanded. Herein, a switchable multifunctional device integrating heating, cooling, and latent energy storage was proposed for temperature regulation and window energy saving for buildings. A radiative cooling (RC) emitter, a phase-change (PC) membrane, and a solar-heating (SH) film were connected layer by layer to form a sandwich structure. The RC emitter exhibited selective infrared emission (emissivity in the atmospheric window: 0.81, emissivity outside the atmospheric window: 0.39) and a high solar reflectance (0.92). Meanwhile, the SH film had a high solar absorptivity (0.90). More importantly, both the RC emitter and the SH film displayed excellent wear resistance and UV resistance. The PC layer can control the temperature at a steady state under dynamic weather conditions, which could be verified by indoor and outdoor measurements. The thermal regulation performance of the multifunctional device was also verified by outdoor measurements. The temperature difference between the RC and SH models of the multifunctional device could reach up to 25 °C. The as-constructed switchable multifunctional device is a promising candidate for alleviating the cooling and heating energy consumption and realizing energy saving for windows.
KW - phase change
KW - radiative cooling
KW - selective infrared emission
KW - solar heating
KW - thermal regulation
UR - http://www.scopus.com/inward/record.url?scp=85151369764&partnerID=8YFLogxK
U2 - 10.1021/acsami.2c21961
DO - 10.1021/acsami.2c21961
M3 - 文章
C2 - 36971527
AN - SCOPUS:85151369764
SN - 1944-8244
VL - 15
SP - 17123
EP - 17133
JO - ACS Applied Materials and Interfaces
JF - ACS Applied Materials and Interfaces
IS - 13
ER -
