Buildings incorporating multi-layer dynamic glass walls—also known as smart or electrochromic glass—offer significant energy efficiency benefits by automatically adjusting solar gain and light transmission. However, these advanced systems introduce complexity in EPC assessments. Variations in tinting, layer configuration, and control algorithms can affect heat gain, cooling loads, and daylighting, making accurate energy performance predictions challenging.
Key EPC Assessment Considerations:
Dynamic Thermal Performance – The variable solar heat gain and insulation properties of multi-layer glass must be accurately represented in EPC modelling software.
Interaction with HVAC Systems – Smart glass alters internal temperature profiles, which impacts heating, ventilation, and cooling loads, requiring careful integration in EPC simulations.
Control Strategies and Occupancy Patterns – The timing of glass tint adjustments and occupancy schedules influences energy consumption, making it critical to include these dynamic behaviors in EPC calculations.
Validation with Real-World Data – Monitoring performance post-occupancy ensures EPC predictions align with actual building energy behavior.
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