Constructing a New Biomass-Based Bistatic Window for Solar Regulation.

Area of Science:

• Materials Science
• Sustainable Building Technologies
• Optoelectronics

Background:

• Smart windows are crucial for energy efficiency in buildings, adapting to climate changes.
• Existing chromic smart windows often compromise on solar modulation or visual clarity (haze).

Purpose of the Study:

• To develop a bistatic window with enhanced solar modulation and luminous transmission capabilities.
• To improve energy efficiency in low-carbon buildings through advanced window technology.

Main Methods:

• Fabrication of a novel bistatic window, avoiding new chromic materials.
• Evaluation of optical properties, including solar modulation, luminous transmittance, and haze.
• Assessment of thermal performance and energy savings in building applications.

Main Results:

• The bistatic window achieved ultra-high solar modulation (ΔTsol = 61%) and high luminous transmittance (91% bleached, 56% colored) with low haze (<1%).
• It demonstrated a significant reduction in indoor surface temperature (≈11°C) and building energy consumption (30-40%).
• The window exhibited rapid switching (<1 min), high color rendering (CRI >80), and excellent cyclic stability (>1000 cycles).

Conclusions:

• The developed bistatic window offers a promising solution for next-generation low-carbon buildings, surpassing traditional smart windows.
• Its facile fabrication and scalability suggest broad applicability in energy-efficient architectural designs.
• This advancement paves the way for future innovations in smart window technology for sustainable construction.