CFSpro: ray tracing for design and optimization of complex fenestration systems using mixed dimensionality approach

Area of Science:

• Optics
• Building Science
• Materials Science

Background:

• Complex fenestration systems (CFSs) require advanced simulation tools for performance optimization.
• Accurate modeling of light and thermal transfer through intricate geometries is crucial for energy-efficient building design.

Purpose of the Study:

• To introduce CFSpro, an advanced optical ray tracing software for the study and optimization of CFSs.
• To describe and validate the ray tracing model, including a thin film model for spectral control.
• To present a novel glazing engineered using CFSpro, offering multiple functionalities.

Main Methods:

• Development of CFSpro software utilizing a hybrid 2D/3D ray tracing algorithm.
• Real-time computation and visualization of numerous rays in extruded geometries.
• Integration of a thin film model to evaluate spectral performance of coatings.

Main Results:

• The CFSpro software accurately computes and visualizes ray tracing in complex fenestration systems.
• The validated model effectively assesses spectral control provided by thin film coatings.
• A novel glazing was successfully engineered, demonstrating integrated daylight, glare, and thermal control.

Conclusions:

• CFSpro is a powerful and validated tool for the design and optimization of complex fenestration systems.
• The developed simulation tool facilitates the creation of advanced glazing solutions with multiple performance benefits.
• Engineered glazing provides daylight, glare protection, and seasonal thermal control while maintaining outward visibility.