Energy and Buildings最新文献

{"title":"Morphology-aware assessment of heating flexibility in district-heated residential buildings","authors":"Chengru Wang, Zihao Niu, Xiaoyi Zhang, Yingjun Ruan, Yanxue Li","doi":"10.1016/j.enbuild.2026.118412","DOIUrl":"https://doi.org/10.1016/j.enbuild.2026.118412","url":null,"abstract":"","PeriodicalId":11641,"journal":{"name":"Energy and Buildings","volume":"3 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149232361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A clustering-based framework to analyse intra-building variability in residential energy performance using geometric descriptors","authors":"Raquel Pérez-Orozco, Diego Costas-Moyano, Pablo Hernandez-Cruz, Pablo Eguía-Oller, Ivan Flores-Abascal","doi":"10.1016/j.enbuild.2026.118413","DOIUrl":"https://doi.org/10.1016/j.enbuild.2026.118413","url":null,"abstract":"","PeriodicalId":11641,"journal":{"name":"Energy and Buildings","volume":"64 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149232381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative evaluation of borehole heat exchanger efficiency in different climatic zones of European capital cities","authors":"Rajendra Roka, António Figueiredo, Ana Vieira, A.H. Samitha Weerakoon, Claudino Cardoso","doi":"10.1016/j.enbuild.2026.118416","DOIUrl":"https://doi.org/10.1016/j.enbuild.2026.118416","url":null,"abstract":"","PeriodicalId":11641,"journal":{"name":"Energy and Buildings","volume":"122 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149232379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unpacking regional carbon inequality in the construction industry: A multiscale analytical framework","authors":"Wenqing Han, Kyubyung Kang, Dezhi Li","doi":"10.1016/j.enbuild.2026.118418","DOIUrl":"https://doi.org/10.1016/j.enbuild.2026.118418","url":null,"abstract":"","PeriodicalId":11641,"journal":{"name":"Energy and Buildings","volume":"25 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149232380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hydration-state-dependent multi-mode passive cooling in bio-based alginate–cellulose semi-IPN hydrogels with confined erythritol and titanium dioxide","authors":"Kindness A. Uyanga, Qin Wang, Jie Han","doi":"10.1016/j.enbuild.2026.118415","DOIUrl":"https://doi.org/10.1016/j.enbuild.2026.118415","url":null,"abstract":"","PeriodicalId":11641,"journal":{"name":"Energy and Buildings","volume":"247 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149232396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"HVAC demand-management strategies in a simulated Bangkok medium office: Effects on peak demand, energy, comfort, and cost","authors":"Kamphol Promjiraprawat","doi":"10.1016/j.enbuild.2026.118402","DOIUrl":"https://doi.org/10.1016/j.enbuild.2026.118402","url":null,"abstract":"Cooling-control strategies can affect facility demand, subsystem loads, comfort, and cost in different directions, making their evaluation sensitive to the metric and time window used. This study compared eight strategies in five families for a simulated Bangkok medium office served by a packaged variable-air-volume system with direct-expansion cooling and fixed outdoor air. Full-year EnergyPlus simulations used native 15-min demand outputs. Facility, HVAC, cooling-coil, comfort, serviceability, and tariff outcomes were evaluated separately. A bounded one-factor sensitivity analysis varied outdoor-air design flow and scheduling, envelope heat capacitance, and coupled cooling-equipment sizing. The 2 °C all-day setback and supply-air-temperature reset both reduced the annual facility peak, annual facility electricity, and reference-tariff bill, with bill reductions of about 6.8%. Their evidence profiles differed. The reset reduced annual latent cooling, whereas the setback increased it and raised occupant-weighted mean predicted percentage dissatisfied from 11.0% to 18.8%. The balanced staged-recovery schedule reduced the annual maximum facility demand within demand-response windows by 12.8% and lowered the daily window maximum on all 252 eligible days, but its annual facility peak increased by 4.6%. Peak-period setbacks also increased the annual facility peak despite small electricity reductions. Tariff sensitivity showed that some economic conclusions depended on the tested rate structure. No strategy dominated all objectives. The findings are specific to the simulated office, HVAC configuration, weather file, and tested sensitivity conditions.","PeriodicalId":11641,"journal":{"name":"Energy and Buildings","volume":"50 1","pages":"118402"},"PeriodicalIF":6.7,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149236092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Household allocation to professional heat-resilient renovation guidance: Cooling-cost value and professional evaluation in Singapore","authors":"Natalia Borzino, Samuel Chng, Sarah Hian May Chan, Harvey Neo","doi":"10.1016/j.enbuild.2026.118401","DOIUrl":"https://doi.org/10.1016/j.enbuild.2026.118401","url":null,"abstract":"Residential renovation is an important implementation point for design choices that can shape indoor thermal comfort and cooling-related energy use over many years. Yet technically relevant measures can influence dwelling performance only if they enter household renovation decisions. Using original survey data from 570 respondents in Singapore, this study examines the maximum share of a renovation budget that households state they would allocate to the same specified package of professional heat-resilient renovation guidance covering ventilation, shading, airflow, materials, layout, and cooling-related choices. Respondents selected among seven allocation ranges from zero to more than 5% of the renovation budget. Positive stated allocation is widespread (92.5%), but only 14.9% allocate at least 3% and 6.3% more than 5%. The perceived value of an anticipated 10% reduction in cooling-related electricity costs is strongly and consistently associated with higher stated allocation. For allocation of at least 3% of the renovation budget, each one-category increase in perceived cooling-cost value is associated with an approximately 9-percentage-point increase in predicted probability. Two distinct dimensions of professional evaluation—confidence that expert renovation and design advice can improve indoor thermal comfort and perceived professional attention to thermal comfort—are jointly associated with stated allocation, although their individual associations vary across different levels of stated allocation. By contrast, reported thermal conditions, cooling use, and renovation priorities provide less consistent evidence once other factors are considered. The findings identify an upstream household decision that precedes the implementation and subsequent performance of heat-resilient renovation measures. The results are associational and concern hypothetical stated allocation rather than realised renovation decisions, market demand, or measured thermal and energy outcomes.","PeriodicalId":11641,"journal":{"name":"Energy and Buildings","volume":"13 1","pages":"118401"},"PeriodicalIF":6.7,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149236105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thermal performance and energy efficiency of a hybrid solar thermosyphon evaporative cooling system for livestock housing","authors":"Natthawud Dussadee, Atipong Nantapun, Prapakorn Tarachai, Prakash Bhuyar","doi":"10.1016/j.enbuild.2026.118399","DOIUrl":"https://doi.org/10.1016/j.enbuild.2026.118399","url":null,"abstract":"Heat stress in livestock housing significantly reduces animal productivity and increases the energy demand of environmental control systems, particularly in tropical climates. This study experimentally investigates a hybrid solar thermosyphon heating-cooling system integrated with evaporative cooling and floor-based water circulation for improving thermal performance, energy efficiency, and environmental sustainability in livestock houses. The proposed system utilizes a thermosyphon heat pipe solar collector to generate hot water during the daytime and chilled water during the nighttime, enabling continuous thermal management. Experimental results demonstrate that the thermosyphon system reduces the temperature of 1000 L of water from 30 °C to approximately 26 °C within 12 h during nighttime, while producing hot water at 48–52 °C during daytime. The use of chilled water enhances the performance of the evaporative cooling system, increasing the heat transfer rate of the wetted media by 27.8% and improving the overall heat transfer coefficient from 509.4 to 664.0 W·K<ce:sup loc=\"post\">−1</ce:sup>. In addition, the integration of floor water circulation improves cooling efficiency by approximately 8.6% and reduces indoor relative humidity by about 5.8%. The Temperature–Humidity Index (THI) decreased from 81.3 to 75.0, indicating a reduction in the index-based assessment of potential heat stress. Furthermore, the system showed a potential electrical energy saving of approximately 3.3%, corresponding to an estimated reduction in CO₂ emissions of 383.2 kg CO₂/year. However, the uncertainty associated with the electrical-energy-saving estimate was not independently quantified; therefore, this result should be interpreted cautiously. Further testing with component-level electricity monitoring and independently repeated comparative trials is needed to establish the reliability and generalizability of the estimated energy-saving potential. These findings suggest that integrating renewable energy with conventional cooling systems may improve environmental control and contribute to more sustainable livestock production under tropical conditions.","PeriodicalId":11641,"journal":{"name":"Energy and Buildings","volume":"4 1","pages":"118399"},"PeriodicalIF":6.7,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149236090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lagged and cumulative associations between thermo-hygrometric exposure and video-derived behavioral engagement in naturally ventilated university classrooms","authors":"Guangyu Liu, Junqi Yu, Xi Luo, Claudio Del Pero, Wenyuan Huang","doi":"10.1016/j.enbuild.2026.118404","DOIUrl":"https://doi.org/10.1016/j.enbuild.2026.118404","url":null,"abstract":"Previous studies of classroom thermal environments have relied mainly on short-term, outcome-based measures, which cannot capture within-class behavioral dynamics under real operating conditions. This study combined continuous in situ monitoring, computer-vision-based behavior recognition, and distributed lag modeling in a four-month field study of six naturally ventilated university classes in Xi'an, China, spanning non-heating and heating periods. A 10 min classroom behavioral engagement indicator (<ce:italic>P</ce:italic><ce:inf loc=\"post\"><ce:italic>e</ce:italic></ce:inf>) was derived from YOLOX-detected behaviors, and its associations with instantaneous, lagged, and rolling-average deviations in temperature and relative humidity were estimated within semester phases identified by piecewise regression. Lagged and rolling-average metrics showed stronger negative associations with <ce:italic>P</ce:italic><ce:inf loc=\"post\">e</ce:inf> than instantaneous metrics. Polynomial distributed lag models showed negative associations from about 10–20 min, with the largest magnitudes at 40 min in the early- and mid-semester phases and persistent negative associations at 60 min in the late-semester phase; cumulative associations continued to build over the 0–60 min horizon. Cumulative associations were significantly stronger in the late-semester phase, most clearly for humidity. These findings suggest that recent exposure-history metrics provide a more informative basis than spot readings for classroom environmental monitoring and operational screening in naturally ventilated and seasonally heated educational buildings.","PeriodicalId":11641,"journal":{"name":"Energy and Buildings","volume":"34 1","pages":"118404"},"PeriodicalIF":6.7,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149236096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On-site investigation and comprehensive performance testing analysis of building envelopes in existing residential buildings in Shanghai","authors":"Xiangyu Yu, Tian Zhao, Shunming Gong, Zhuoyu Yu, Yi Liu","doi":"10.1016/j.enbuild.2026.118393","DOIUrl":"https://doi.org/10.1016/j.enbuild.2026.118393","url":null,"abstract":"With the slowdown in economic and population growth, China's residential market is shifting from incremental competition to stock-based development, making the renovation and upgrading of existing residential buildings a new priority. As one of China's earliest cities to adopt industrialized housing, Shanghai boasts a vast and diverse stock of residential buildings, serving as an ideal case study for existing housing in China. This research focuses on the thermal performance of building envelopes in existing residential structures. Following an “investigation-testing-validation”methodology, field surveys covering 50+ communities were conducted, and four typical residential units were selected for comprehensive performance testing. Key influencing factors—the U-values of building envelopes and area ratios—were further analyzed through quantitative simulations. The main findings are as follows: The thermal performance of Shanghai's existing residential building envelopes fails to meet local and national energy efficiency standards, with roofs and exterior windows exhibiting the most significant deficiencies. Indoor temperature trends show a positive correlation with weighted U-values. For top-floor units, the roof U-values have the greatest impact on annual energy consumption, whereas for non-top-floor units, the exterior wall U-values are the dominant factor. The envelope-to-floor ratio influences indoor temperatures to a greater extent than the window-to-wall ratio. Larger envelope-to-floor ratios lead to more extreme indoor temperatures. Under typical conditions, changes in the envelope area ratio have a less pronounced impact than variations in the U-values of roofs and exterior walls. Based on these findings, the study proposes improvement recommendations for building envelopes at both the residential and policy levels.","PeriodicalId":11641,"journal":{"name":"Energy and Buildings","volume":"7 1","pages":"118393"},"PeriodicalIF":6.7,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149236091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}