Hongju Meng , Jie Ji , Hao Xie , Hengmin Jia , Yu Qian , Jiyao Li , Yan Mu
{"title":"Experimental study on the purification performance of sterilization-Trombe walls with and without fins in the heating season","authors":"Hongju Meng , Jie Ji , Hao Xie , Hengmin Jia , Yu Qian , Jiyao Li , Yan Mu","doi":"10.1016/j.buildenv.2025.112948","DOIUrl":"10.1016/j.buildenv.2025.112948","url":null,"abstract":"<div><div>Indoor bioaerosol in winter will lead to frequent respiratory diseases, influenza and other diseases, and thermal sterilization technology is an important sterilization technology. The combination of thermal sterilization technology and Trombe wall for indoor heating can realize the thermal sterilization of indoor air in winter at the same time, which is of great significance for indoor comfort and safety. However, there is still a lack of actual research reports to study this aspect, so this paper sets up the experimental platform of traditional Trombe wall system (TSTW) and finned Trombe wall system (FSTW), and studies the effect of the two systems on indoor bacteria in winter. The change of indoor bacterial concentration with time under different temperature conditions was studied, and the inactivation effect of the two systems was analyzed and compared. The results show that: in both systems, the single inactivation rate of bacteria increased with the increase of temperature. At 75 °C, the single inactivation rates of <em>K. pneumoniae</em> and <em>Escherichia coli</em> in TSTW and FSTW systems were 0.47 and 0.78, 0.71 and 0.87, respectively. For TSTW and FSTW systems, at low temperature of 45 °C, the indoor bacterial concentration of FSTW system decreases faster than that of TSTW system; however, at high temperature, because TSTW system has a larger amount of heat exchange air, the indoor bacterial concentration of TSTW system decreases faster than that of FSTW system.</div></div>","PeriodicalId":9273,"journal":{"name":"Building and Environment","volume":"277 ","pages":"Article 112948"},"PeriodicalIF":7.1,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143759515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Experimental and numerical investigation of an efficient oxygen supply device for improving the sleep environment at high altitudes","authors":"Xuan Zhang, Angui Li, Yuanqing Ma, Haiguo Yin, Meiou Liu, Shusen Chen","doi":"10.1016/j.buildenv.2025.112909","DOIUrl":"10.1016/j.buildenv.2025.112909","url":null,"abstract":"<div><div>Hypoxic environments at high altitudes can cause severe sleep disorders in nonlocal personnel. However, existing oxygen supply methods are plagued by discomfort, restricted movement and inefficiency. To alleviate the above disadvantages, this study presents an efficient wall attachment oxygen supply device (WAOS-D) to improve the oxygen environment during sleep. The flow characteristics of jet, including the jet trajectory of the WAOS-D, were revealed by experimental and numerical methods. Furthermore, semi-empirical formulas for centerline velocity and concentration decay were obtained, which provides clear guidance on WAOS-D design under different operating condition, such as different altitudes. The WAOS-D was compared with the full-space diffuse oxygen supply (FDOS) method and traditional local diffuse oxygen supply (LDOS) method in terms of the oxygen enrichment effects. The results showed that after 1 hour of oxygen supply, the oxygen concentrations at the optimal breathing point of WAOS-D, FDOS, and LDOS were 25.6 %vol, 22.7 %vol, and 22.0%vol. The oxygen rise rates of the WAOS-D were 2.7 and 4.6 times higher than those of the FDOS and LDOS, respectively. The LDOS method showed the highest inhomogeneity coefficient within the breathing zone, followed by FDOS and WAOS-D, indicating that WAOS-D provides the best oxygen enrichment uniformity. The study indicated that the WAOS-D could efficiently create a comfortable and uniform oxygen-enriched environment during sleep. The current study motivates further research on the efficient oxygen supply method at high altitudes.</div></div>","PeriodicalId":9273,"journal":{"name":"Building and Environment","volume":"278 ","pages":"Article 112909"},"PeriodicalIF":7.1,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143824276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Corrigendum to “Product stage embodied greenhouse gas reductions in single-family dwellings: drivers of embodied greenhouse gas emissions and variability between Toronto, Perth and Luzon” [Building and Environment 242 (2023) 120/110599]","authors":"Aldrick Arceo, Shoshanna Saxe, Heather L. MacLean","doi":"10.1016/j.buildenv.2025.112901","DOIUrl":"10.1016/j.buildenv.2025.112901","url":null,"abstract":"","PeriodicalId":9273,"journal":{"name":"Building and Environment","volume":"277 ","pages":"Article 112901"},"PeriodicalIF":7.1,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143724648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Feng Shi , Chenyuan Zheng , Junwei Lin , Xuan Yang , Yilin You , Mengsheng Yang , Xiaoqiang Hong
{"title":"Energy-saving and visual-thermal performance of multi-sectional DSF system in a typical office room across five climate zones in China","authors":"Feng Shi , Chenyuan Zheng , Junwei Lin , Xuan Yang , Yilin You , Mengsheng Yang , Xiaoqiang Hong","doi":"10.1016/j.buildenv.2025.112945","DOIUrl":"10.1016/j.buildenv.2025.112945","url":null,"abstract":"<div><div>The multi-sectional double-skin façade (DSF) system, which combines with Venetian blinds (VBs), ventilation valves and a light shelf system, can dynamically respond to climatic conditions through control strategies, offering great potential in enhancing building energy performance and visual-thermal comfort. This study aims to evaluate the performance of the multi-sectional DSF system through experimental and simulation approaches, with a focus on comparing three cases across five climate zones in China: a single-glazed window with VBs (Case 1), a naturally ventilated DSF with VBs (Case 2), and the multi-sectional DSF system (Case 3). To achieve this, experiments on the indoor daylighting and thermal performance of the multi-sectional DSF system were carried out. The building performance simulation model was set up and validated to evaluate the annual visual-thermal comfort and energy performance of the system. The results showed that: (1) Case 3 achieved the lowest annual EUI, with reductions of 9.6 %-17.1 % compared to Case 1 and 0.7 %-15.5 % compared to Case 2 across five climate zones. (2) Case 3 significantly improved indoor daylight quality, with sUDI<sub>300–3000</sub> <sub>lx</sub> increasing by 8.4 %-21.6 % compared to Case 1 and by 27.4 %-42.2 % compared to Case 2. (3) For overheating discomfort, the average PPD<sub>overheating</sub> in Case 3 was 1.3 %-5.1 % lower than in Case 1 but 6.1 %-11.4 % higher than in Case 2 across five climate zones, while the average PPD<sub>overcooling</sub> was 1.3 %-3.4 % lower than in Case 1 and -1.3 %-4.2 % lower than in Case 2 across five climate zones.</div></div>","PeriodicalId":9273,"journal":{"name":"Building and Environment","volume":"277 ","pages":"Article 112945"},"PeriodicalIF":7.1,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739697","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kambiz Sadeghi , Shri H. Viswanathan , Ankit Joshi , Lyle Bartels , Sylwester Wereski , Cibin T. Jose , Galina Mihaleva , Muhammad Abdullah , Ariane Middel , Konrad Rykaczewski
{"title":"Resolving shortwave and longwave irradiation distributions across the human body in outdoor built environments","authors":"Kambiz Sadeghi , Shri H. Viswanathan , Ankit Joshi , Lyle Bartels , Sylwester Wereski , Cibin T. Jose , Galina Mihaleva , Muhammad Abdullah , Ariane Middel , Konrad Rykaczewski","doi":"10.1016/j.buildenv.2025.112934","DOIUrl":"10.1016/j.buildenv.2025.112934","url":null,"abstract":"<div><div>Outdoor built environments can be designed to enhance thermal comfort, yet the relationship between the two is often assessed in whole-body terms, overlooking the asymmetric nature of thermal interactions between the human body and its surroundings. Moreover, the radiative component of heat exchange—dominant in hot and dry climates—is typically lumped into a single artificial metric, the mean radiant temperature, rather than being resolved into its shortwave and longwave spectral components. The shortwave irradiation distribution on the human body is often highly anisotropic, causing localized thermal discomfort in outdoor environments. However, no existing methods effectively quantify shortwave and longwave irradiation distributions on the human body. To address this gap, we developed two methods to quantify these processes. The first approach uses an outdoor thermal manikin with a white-coated side, enabling the separation of spectral components by subtracting measurements from symmetrically corresponding surface zones of tan color. The second hybrid approach converts radiometer measurements in six directions into boundary conditions for computational thermal manikin simulations. We evaluated irradiation distributions for various body parts using both methods during outdoor measurements across sunny, partially shaded, and fully shaded sites under warm to extremely hot conditions. In most cases, the two methods produced closely aligned results, with divergences highlighting their respective strengths and limitations. Additionally, we used the manikin to quantify irradiation attenuation provided by five long-sleeve shirts with colors ranging from white to black. These advanced methods can be integrated with airflow and thermoregulatory modeling to optimize outdoor built environments for enhanced human thermal comfort.</div></div>","PeriodicalId":9273,"journal":{"name":"Building and Environment","volume":"277 ","pages":"Article 112934"},"PeriodicalIF":7.1,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143759514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Ten questions concerning housing sufficiency","authors":"Aldrick Arceo , Marianne Touchie , William O'Brien , Tianzhen Hong , Jeetika Malik , Matan Mayer , Terri Peters , Shoshanna Saxe , Ruth Tamas , Hannah Villeneuve , Benoît Schmaltz","doi":"10.1016/j.buildenv.2025.112941","DOIUrl":"10.1016/j.buildenv.2025.112941","url":null,"abstract":"<div><div>Housing sufficiency is an emerging concept in the provision of environmentally sustainable housing. It aims for demand-side strategies that reduce excessive, aggregate consumption levels to promote efficient resource utilization and sustainability in the construction sector while providing everyone with a decent standard of housing. However, it is challenging to implement as it interferes with housing-related social and cultural norms. This paper poses and answers ten questions that highlight the challenges, opportunities, and examples of sufficiency strategies in the context of housing provision and the environmental crisis. Question 1 discusses the need for sufficiency as a tool to complement supply-side strategies including efficiency and renewable energy strategies in providing housing. Question 2 examines the concept of housing sufficiency from different perspectives, such as ecological economics and social ecology. Question 3 summarizes the methods used to measure housing sufficiency, with specific focus on the upper and lower limits that respect planetary boundaries and basic human needs. Questions 4 and 5 describe the benefits, potential drawbacks, and rebound effects of housing sufficiency. Questions 6 and 7 examine housing sufficiency in developed and developing countries, respectively. Questions 8 and 9 discuss design strategies, housing occupancy, and tenure models that are needed for housing sufficiency. Finally, Question 10 provides a summary of policies and regulations that are needed to systematically support the implementation of sufficiency strategies. The questions and answers provide insights for wider application of housing sufficiency in research and practice.</div></div>","PeriodicalId":9273,"journal":{"name":"Building and Environment","volume":"277 ","pages":"Article 112941"},"PeriodicalIF":7.1,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143768484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Children's thermal comfort in school classrooms: Influence of contextual factors, thermal experience, and diurnal variations","authors":"Despoina Teli","doi":"10.1016/j.buildenv.2025.112916","DOIUrl":"10.1016/j.buildenv.2025.112916","url":null,"abstract":"<div><div>In recent years, there has been growing interest in children's thermal comfort, which is partly attributed to research findings on children's lower comfort temperatures compared to adults and to the occurrence of more frequent and longer heatwaves. This paper explores the influence of contextual factors on children's thermal perception by comparing field survey results from Swedish grade school classrooms with findings from previous studies in the UK that followed the same study design. The Swedish dataset consists of 2116 questionnaires, collected from approximately 160 children aged 9–11, across 90 surveys conducted during both the heating and non-heating seasons. The results confirm the previously observed discrepancy between children's reported thermal sensation and both the Predicted Mean Vote (PMV) and the adaptive comfort models, with children's comfort temperature being lower than predicted. However, the children in this study were highly adaptive and more so than those in the UK study, with a unit change in thermal sensation vote in the non-heating season corresponding to 5 °C change in operative temperature. Regarding diurnal variation in thermal perception, children reported higher thermal sensation in the afternoon at the same operative temperature and preferred a cooler environment, with no change observed in clothing insulation. This research highlights the importance of contextual factors- such as school policies, culture and indoor climate experience- on shaping thermal comfort trends, and emphasises the need for further research on adaptive comfort of schoolchildren in different contexts.</div></div>","PeriodicalId":9273,"journal":{"name":"Building and Environment","volume":"277 ","pages":"Article 112916"},"PeriodicalIF":7.1,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143783852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A theoretical framework for identifying ventilation corridors in megacity building clusters using coupled least-cost path and A* algorithms","authors":"Kai Jia , Liang Zhou , Hong Gao , Qinke Sun","doi":"10.1016/j.buildenv.2025.112890","DOIUrl":"10.1016/j.buildenv.2025.112890","url":null,"abstract":"<div><div>Increasing building density and disordered spatial patterns within megacities have intensified urban heat islands and air pollution, threatening public health and sustainability. Optimizing ventilation corridors is a key mitigation strategy. However, existing algorithms for identifying ventilation corridors fail to adequately consider diverse building characteristics across neighborhoods, resulting in limited coverage and adaptability to complex urban airflow. To address this challenge, this study introduces a method that couples pathfinding algorithms with airflow cost indices for ventilation corridor identification. Utilizing resistance maps, it visualizes ventilation performance and identifies potential corridors. The study reveals that (1) the correlation between building height and multiple indicators is below 0.15, indicating that height alone does not necessarily obstruct ventilation around buildings; (2) ventilation costs in core urban areas are 30 %-50 % higher than in peripheral areas; in dense areas, water bodies, green spaces, and open land support enhanced air circulation; (3) the ventilation corridors identified by the improved algorithm act as bridges connecting regions, with 288 pathways mapped based on frequency overlays, showing most corridors align with roads of various levels. The proposed ventilation assessment method and corridor identification strategy demonstrate superior accuracy and reliability in complex terrains and configurations, and adaptability to dynamic conditions. This method offers a scientific foundation for improving urban ventilation, enhancing air quality, and supporting sustainable urban development.</div></div>","PeriodicalId":9273,"journal":{"name":"Building and Environment","volume":"276 ","pages":"Article 112890"},"PeriodicalIF":7.1,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143715197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ji Hun Park, Yujin Kang, Seong Taek Kang, Sumin Kim
{"title":"Assessment of hygrothermal performance of ply-lam CLT wall assemblies in a dry-winter humid continental climate region","authors":"Ji Hun Park, Yujin Kang, Seong Taek Kang, Sumin Kim","doi":"10.1016/j.buildenv.2025.112912","DOIUrl":"10.1016/j.buildenv.2025.112912","url":null,"abstract":"<div><div>As global efforts to reduce carbon emissions in the building sector continue to grow, mass timber construction has emerged as a sustainable alternative to traditional materials. However, the application of mass timber structures in regions with extreme seasonal variations, such as South Korea, presents unique challenges related to moisture accumulation, condensation risks, and mold growth. Despite the adoption of engineered wood products, South Korea lacks region-specific guidelines for building envelope design, leading to potential durability concerns when relying on foreign design standards. This study evaluates the hygrothermal performance of ply-lam CLT wall assemblies under South Korea's distinct climatic conditions, characterized by hot, humid summers and dry winters. Using WUFI-based simulations, the study examines condensation risk and mold growth risk across multiple climate zones and assesses potential mitigation strategies. Results indicate that moisture accumulation varies by region, with higher condensation risk and mold growth risk observed in Incheon and Chuncheon due to coastal humidity and colder inland temperatures, respectively. Among three tested improvement strategies, replacing wood siding with a high water vapor diffusion-resistant cladding system was the most effective in reducing moisture-related risks. While this study provides valuable insights into climate-adaptive mass timber design, it is limited by its reliance on simulations, lacking experimental validation. Future research should incorporate long-term field monitoring and empirical data to refine moisture control strategies. The findings contribute to the development of regionally optimized, durable, and energy-efficient timber buildings, ensuring their long-term viability in South Korea's evolving construction landscape.</div></div>","PeriodicalId":9273,"journal":{"name":"Building and Environment","volume":"277 ","pages":"Article 112912"},"PeriodicalIF":7.1,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143768493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ryu Itokazu , Alan Kabanshi , Kazuki Kuga , Naoki Ikegaya , Kazuhide Ito
{"title":"Exploring Ventilation Efficiency through Scalar Transport Equations with existing and new CFD-based indices","authors":"Ryu Itokazu , Alan Kabanshi , Kazuki Kuga , Naoki Ikegaya , Kazuhide Ito","doi":"10.1016/j.buildenv.2025.112942","DOIUrl":"10.1016/j.buildenv.2025.112942","url":null,"abstract":"<div><div>In practical ventilation design for contamination control, it is commonly assumed that perfectly mixed or well-mixed conditions exist. However, due to the complex fluid dynamics within indoor environments, the actual distribution of indoor scalar concentrations is often heterogeneous. Ventilation efficiency indices provide valuable insights into the mechanisms that lead to heterogeneous distributions. In CFD-based ventilation efficiency studies, once a steady-state flow field is established, various ventilation efficiency analyses can be conducted by coupling the steady-state flow field with scalar transport equations. This study focuses on CFD-based ventilation efficiency indices to explore the correlation between ventilation efficiency and the number of scalar transport equations required for their calculations. In addition to the ventilation efficiency indices proposed to date, a new index, the average return time, was introduced as a time scale for scalars recirculating within the source point. Furthermore, we provide deeper insights into ventilation efficiency by decomposing the average staying time of scalars within a room into three distinct components: recirculation, staying, and direct exhaust. The results of these ventilation efficiency analyses offer valuable information for describing fresh/clean air supply, scalar removal, recirculation, and dispersion within indoor spaces.</div></div>","PeriodicalId":9273,"journal":{"name":"Building and Environment","volume":"277 ","pages":"Article 112942"},"PeriodicalIF":7.1,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143768486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}