Research on Passive Exterior Windows of Ultra-Low Energy Office Building in Summer, Wuhan

This study introduces a proposal for a passive exterior window tailored to the climatic conditions prevalent in China's hot summer and cold winter zone. To evaluate its performance, an experimental platform was set up outside a standard office, where tests were conducted to analyze the indoor thermal environment under four seasonal scenarios. These tests involved a comparison between a passive room (PR) equipped with the proposed window and a non-passive room (NPR). The human apparent temperature was calculated and assessed based on collected thermal data. Furthermore, a nonlinear fitting regression analysis was performed using Origin software on the indoor environmental temperature (IET), window surface temperature (WST), and apparent temperature (AT) data. Additionally, the study employed gene expression programming (GEP) to refine the somatosensory temperature calculation formula. This approach enabled a comprehensive analysis of the various factors influencing the indoor thermal environment through the breathing energy-saving window. The results validate the feasibility of this innovative window design and provide valuable insights for future energy-efficient window designs and retrofits in the region.