Guest Editors
Assoc. Prof. Wuxing Zheng
Email: wxzheng@nwpu.edu.cn
Affiliation: School of Mechanics and Transportation Engineering, Northwestern Polytechnical University, Xi’an, China
Homepage:
Research Interests: building energy efficiency, building thermal environment, human thermal comfort, green buildings

Dr. Lei Zhang
Email: zhanglei0124@xaut.edu.cn
Affiliation: School of Civil Engineering and Architecture, Xi'an University of Technology, Xi'an, China
Homepage:
Research Interests: building energy efficiency, passive building design, passive radiation cooling, night ventilation cooling, advanced building materials

Summary
The building sector accounts for approximately 30% of global total energy consumption, being a major contributor to greenhouse gas emissions. Against the backdrop of worsening climate change and the global pursuit of carbon neutrality goals, improving building energy efficiency has become a core strategy for sustainable development. Building energy efficiency is influenced by multiple interrelated factors, including thermal performance of buildings, advanced building materials, building thermal environment, and human thermal comfort.
The aim of this SI is gathering high-quality cutting-edge research and practical applications focusing on building energy efficiency, promoting the translation of theoretical achievements into industrial practice. The scope covers passive building design, passive radiation cooling, night ventilation cooling, advanced energy-saving building materials, building thermal environment optimization, human thermal comfort regulation, and green building development.
We invite submissions of various manuscript types, such as original research papers, review articles, and perspective pieces. For the aforementioned topics, we encourage original contributions from both academic researchers and industry professionals engaged in fields including, but not limited to:
· Thermal performance of buildings;
· Passive radiation cooling application;
· Night ventilation cooling system design;
· Advanced energy-saving materials development;
· Thermal environment & comfort coupling optimization;
· Green building energy efficiency enhancement;
· Existing building energy-saving retrofitting;
· HVAC system energy efficiency optimization.
Keywords
building energy efficiency, building thermal performance, building thermal environment, human thermal comfort, passive radiation cooling, night ventilation cooling, advanced building materials