Thermal Science 2023 Volume 27, Issue 3 Part A, Pages: 2183-2194
https://doi.org/10.2298/TSCI2303183L
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Research on the energy-saving effect of composite film materials on smart windows based on optical properties
Luo Xiangxiang (School of Chemical Engineering and Modern Materials, Shangluo University, Shangluo, China), Xiangxiang_Luo726@outlook.com
Li Feng (School of Chemical Engineering and Modern Materials, Shangluo University, Shangluo, China)
Qiao Chengfang (School of Chemical Engineering and Modern Materials, Shangluo University, Shangluo, China)
Yuan Fei (School of Chemical Engineering and Modern Materials, Shangluo University, Shangluo, China)
Zhou Chunsheng (School of Chemical Engineering and Modern Materials, Shangluo University, Shangluo, China)
As the industrial and economic level continues to develop, the urban heat
island effect is then serious. In order to control the indoor temperature in
life and production and improve the indoor environment in summer, the study
was conducted on composite film materials for smart windows for buildings.
An optical analysis of the cooling requirement was conducted first, and then
the material was modified based on this, and a composite film material based
on polydimethylsiloxane (PDMS) and Ag coating was made. The test results
show that the composite film can change the spectral absorption of the
object and reduce the temperature of the object by 16.7 °C under the same
light scenario. Tests on commonly used low-e glass show that the composite
film material can reduce room temperature with increased sunlight
transmission. Finally, a cooling test on PV panels used for building energy
efficiency effectively reduced the operating temperature of the units,
although it could not directly affect the power generation efficiency. This
shows that the PDMS composite film based on optical properties can reduce
the indoor temperature, thus reducing the power of electric cooling. The
energy saving effect has positive significance for building windows.
Keywords: optical properties, smart window, composite film, energy saving effect
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