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Winter thermal comfort of older adults in historic districts: A comparative study across two Chinese climate zones 历史街区老年人冬季热舒适:中国两个气候带的比较研究
IF 6.7 2区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Pub Date : 2026-02-09 DOI: 10.1016/j.enbuild.2026.117131
Lei Li, Long Jiang, Xiaoyi She, Jianhang He, Meng Wu, Meng Zhen, Kai Nan, Ming Zhang
With population aging, improving the winter outdoor thermal comfort of older adults in historic urban districts is important for health and for sustainable urban renewal. Focusing on two representative sites—Jinli in Chengdu (southern group, hot summer–cold winter) and Buzili in Zhangjiakou (northern group, cold zone), we combined micrometeorological measurements with questionnaires, obtaining 1,512 valid older adult samples. Physiologically Equivalent Temperature (PET) was used to assess winter thermal perception, and machine learning models were applied to identify key influencing factors. Results indicate that the northern group has a Neutral Physiologically Equivalent Temperature (NPET) of 7.4℃ and a thermally acceptable range (TAR) of 1.90–14.66℃, whereas the southern group has an NPET of 12.3℃ and a TAR of 8.93–18.51℃. Random Forest performed best for predicting Thermal Sensation Vote (TSV) (north R2 = 0.804, south R2 = 0.867). SHapley Additive exPlanations (SHAP) translated qualitative directions into indicative intervals: Va exceeds about 2.0 m/s it markedly shifts TSV toward “colder”, whereas keeping near ground Va within 1–1.5 m/s lowers risk; in the south, when RH reaches about 80% or higher and Ta is above about 12℃, the marginal warming effect of temperature increase alone attenuates, suggesting a priority for dehumidification plus moderate warming. PM2.5 and PM10 showed a negative association with Thermal Comfort Vote (TCV) in the north. This study provides winter thermal benchmarks and quantifies the context sensitivity of temperature–wind/humidity couplings into practice oriented indicative intervals, offering evidence for microclimate optimization and age friendly design in historic districts
随着人口老龄化,改善历史城区老年人冬季室外热舒适对健康和城市可持续更新具有重要意义。以成都金里(南组,夏热冬冷)和张家口布子里(北组,寒区)两个代表性站点为研究对象,采用微气象测量与问卷调查相结合的方法,获取有效老年人样本1512份。使用生理等效温度(PET)评估冬季热感知,并应用机器学习模型识别关键影响因素。结果表明,北侧组的中性生理等效温度(NPET)为7.4℃,热可接受范围(TAR)为1.90 ~ 14.66℃,而南侧组的NPET为12.3℃,TAR为8.93 ~ 18.51℃。随机森林对热感觉投票(TSV)的预测效果最好(北R2 = 0.804,南R2 = 0.867)。SHapley加性解释(SHAP)将定性方向转化为指示区间:Va超过2.0 m/s, TSV明显向“更冷”方向移动,而保持近地Va在1-1.5 m/s内降低风险;在南方,当RH达到80%以上,Ta在12℃以上时,单纯增温的边际增温效应减弱,应优先进行除湿+适度增温。在北方,PM2.5和PM10与热舒适指数呈负相关。该研究提供了冬季热基准,并将温度-风/湿度耦合的上下文敏感性量化为面向实践的指示区间,为历史街区的小气候优化和年龄友好型设计提供了证据
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引用次数: 0
Performance assessment of nature-based solutions for sustainable urban housing 基于自然的可持续城市住房解决方案的绩效评估
IF 6.7 2区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Pub Date : 2026-02-09 DOI: 10.1016/j.enbuild.2026.117127
Muhammad Aarish Shah, Syed Hassaan Ali Shah, Omama Zeb, Aman Alam
The building sector is one of the major energy consumer and carbon producers, primarily due to the conventional construction and operation methods. Conventional buildings alone account for more than 40% of the total global greenhouse gas emissions during their construction and operation phase. These massive emissions further exacerbate climate change and its adverse impacts like urban flooding, urban heat island, effect overall increase in temperatures, melting of glaciers etc. To counter these challenges and mitigate the ill impacts of climate change, a step towards sustainable construction technique needs to be considered. This study evaluates the combined impact of green roofs and vertical gardening on a typical 10-Marla residential building under regional climatic conditions using EnergyPlus simulations, informed by actual utility energy consumption and assessed using prevailing average residential electricity rates. A 10-Marla residential building was modeled in Autodesk Revit and then exported to DesignBuilder software for energy analysis. The simulations were performed using EnergyPlus simulation engine, initially for the conventional building and later for the optimized building integrated with vertical and rooftop gardening. A cost-recovery analysis was performed to calculate the payback period for the amount required for retrofitting of these measures into a standard building. The results showed that there were annual energy savings of about 25% and the carbon emissions were also reduced by the same figure. The cost recovery period for the upfront cost was determined to be 3.45 years. The operative temperatures dropped by up to 1.2°C for summer season and increased by up to 1.6°C for winter season. The results should be interpreted conservatively, as localized urban heat island effects not fully captured in gridded weather datasets may further increase cooling demand and enhance the relative benefits of the proposed retrofits.
建筑行业是主要的能源消费者和碳生产者之一,主要是由于传统的建筑和操作方法。仅传统建筑在其建造和运营阶段就占全球温室气体排放总量的40%以上。这些大量的排放进一步加剧了气候变化及其不利影响,如城市洪水、城市热岛、整体气温上升、冰川融化等。为了应对这些挑战并减轻气候变化的不良影响,需要考虑迈向可持续建筑技术的一步。本研究利用EnergyPlus模拟,根据实际公用事业能耗,并使用现行平均住宅电费,评估了在区域气候条件下,绿色屋顶和垂直园艺对典型10-Marla住宅建筑的综合影响。在Autodesk Revit中对10-Marla住宅建筑进行建模,然后导出到DesignBuilder软件进行能源分析。模拟是使用EnergyPlus模拟引擎进行的,最初是针对传统建筑,后来是针对整合了垂直和屋顶园艺的优化建筑。进行了成本回收分析,以计算将这些措施改造成标准建筑物所需金额的回收期。结果表明,每年节约能源约25%,碳排放量也减少了同样的数字。前期成本的成本回收周期确定为3.45 年。夏季工作温度下降1.2°C,冬季工作温度上升1.6°C。结果应该被保守地解释,因为在网格化天气数据集中没有完全捕获的局部城市热岛效应可能会进一步增加冷却需求,并提高拟议改造的相对效益。
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引用次数: 0
Computationally Efficient Smart Building Energy Management via Deep Reinforcement Learning-Enhanced Model Predictive Control 基于深度强化学习增强模型预测控制的高效计算智能建筑能源管理
IF 6.7 2区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Pub Date : 2026-02-09 DOI: 10.1016/j.enbuild.2026.117128
Bo Li, Gangquan Si, Minglin Xu, Detao Fan, Qianyue Wang, Xin Wang
Model predictive control (MPC) is a powerful strategy for optimizing building energy management, but its high computational burden hinders its deployment on resource-constrained hardware. To address this challenge, this paper presents a novel hierarchical control framework that synergizes MPC with deep reinforcement learning (DRL) to navigate the trade-off between control performance and computational burden. Within this framework, a low-level MPC controller is responsible for precise building energy management with the objective of maximizing energy efficiency and ensuring user thermal comfort, while a high-level DRL agent adaptively tunes the MPC’s meta-parameters to reduce unnecessary computational burden without significantly degrading performance. To implement this framework, an adaptive meta-parameter MPC algorithm is developed based on expert-guided proximal policy optimization by using an expert demonstrator to enhance the DRL training efficiency. Simulation results show that the proposed algorithm significantly outperforms standalone MPC and DRL methods. Compared to a fixed-long-horizon MPC, the proposed method reduces the actual computation time by 75.8% with only a marginal 2.6% increase in operational cost. Furthermore, by coordinately adjusting both the recomputation frequency and prediction horizon of the MPC controller, the framework achieves a more favorable trade-off between control performance and computational efficiency than a standard event-triggered MPC. Finally, robustness analyses confirm that the DRL agent learns an intelligent policy that adaptively intensifies computational effort to mitigate the impact of prediction errors and strategically allocates resources in response to price volatility, thereby maintaining high performance and efficiency even under extreme conditions.
模型预测控制(MPC)是优化建筑能源管理的一种有效策略,但其高昂的计算负担阻碍了其在资源受限的硬件上的部署。为了解决这一挑战,本文提出了一种新的分层控制框架,该框架将MPC与深度强化学习(DRL)协同起来,在控制性能和计算负担之间进行权衡。在这个框架内,低级MPC控制器负责精确的建筑能源管理,目标是最大限度地提高能源效率并确保用户热舒适,而高级DRL代理自适应调整MPC的元参数,以减少不必要的计算负担,而不会显著降低性能。为了实现该框架,利用专家演示器,提出了一种基于专家引导的近端策略优化的自适应元参数MPC算法,以提高DRL的训练效率。仿真结果表明,该算法明显优于独立的MPC和DRL方法。与固定的长视距MPC相比,该方法将实际计算时间缩短了75.8%,而运行成本仅增加了2.6%。此外,通过协调调整MPC控制器的重计算频率和预测范围,该框架在控制性能和计算效率之间实现了比标准事件触发MPC更有利的权衡。最后,鲁棒性分析证实,DRL代理学习了一种智能策略,该策略可以自适应地加强计算工作量,以减轻预测错误的影响,并根据价格波动有策略地分配资源,从而即使在极端条件下也能保持高性能和高效率。
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引用次数: 0
The role and CO2 emission reduction cost of battery energy storage in fully integrated, optimally controlled micro energy communities 电池储能在完全集成、最优控制的微能源群落中的作用和CO2减排成本
IF 6.7 2区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Pub Date : 2026-02-09 DOI: 10.1016/j.enbuild.2026.117123
Lucas Verleyen, Lieve Helsen
Battery Energy Storage (BES) is often seen as an attractive component in residential (district) energy systems. Typically, BES is considered the sole source of flexibility. However, thermal energy systems inherently offer significant flexibility through the thermal capacity of the buildings and hydronic systems. Therefore, this paper presents a fully integrated approach that combines all relevant energy services (space heating, domestic hot water and electricity for appliances), detailed building models representing a flexible demand side, and proper hydronic and electrical connections between all components into one non-linear physics-based energy system model. An optimal controller acts as the system integrator, fully exploiting the inherent system flexibility and leveraging synergies between heat and electricity. The proposed method is applied to a Micro Energy Community (MEC) under Belgian boundary conditions. A comparative analysis of 33 energy system layouts is conducted to investigate the role and quantify the CO2 emission reduction cost of BES in fully integrated MECs optimised for minimal CO2 emissions. The analysis demonstrates that neglecting thermal system flexibility leads to biased results. The most cost-effective system for emission reduction is a scenario with a collective heat pump, without BES, and where heat and electricity are shared. This system reduces annual emissions by 11.6 tonnes at the cost of 215 EUR/tonne. A collective BES further reduces emissions by 0.1 tonnes, but at a significantly higher cost of 5,430 EUR/tonne. Therefore, BES is not cost-effective for emission reduction in buildings. However, this conclusion may change when considering grid support or applying other policy frameworks.
电池储能(BES)通常被视为住宅(地区)能源系统中一个有吸引力的组成部分。通常,BES被认为是灵活性的唯一来源。然而,热能系统本身通过建筑物和水力系统的热容量提供了显著的灵活性。因此,本文提出了一种完全集成的方法,将所有相关的能源服务(空间供暖,家庭热水和电器用电),代表灵活需求端的详细建筑模型,以及所有组件之间适当的水力和电气连接结合到一个基于非线性物理的能源系统模型中。最优控制器作为系统集成商,充分利用系统固有的灵活性,并利用热电之间的协同效应。将该方法应用于比利时边界条件下的微能源共同体(MEC)。通过对33种能源系统布局的对比分析,探讨了BES在以最小二氧化碳排放为优化目标的全集成mec中的作用,并量化了其二氧化碳减排成本。分析表明,忽略热系统的灵活性会导致结果偏差。最具成本效益的减排系统是使用集体热泵,不使用BES,并共享热量和电力的方案。该系统每年减少11.6吨的排放量,每吨成本为215欧元。集体BES进一步减少了0.1吨的排放量,但每吨5,430欧元的成本要高得多。因此,BES对于建筑物的减排并不具有成本效益。然而,在考虑网格支持或应用其他策略框架时,这个结论可能会改变。
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引用次数: 0
Improvement strategies based on airflow characteristic in a row-based cooling data center 基于行式冷却数据中心气流特性的改进策略
IF 6.7 2区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Pub Date : 2026-02-09 DOI: 10.1016/j.enbuild.2026.117136
Yingying Lyu, Xuelian Bai, Ligang Wang, Yating Wang, Chaoqiang Jin
The short airflow paths of row-based cooling systems can enhance cooling efficiency for data centers (DCs). However, the placement of row-based air conditioning units (ACUs) close to the racks significantly increases the airflow velocity in the aisles. Meanwhile, different power modules share one hot aisle, which is easy to occur the hot exhaust air mixing problem. Existing researches neglect the airflow interaction, which leads to the return air temperatures inaccurately reflecting the cooling demand of each module. To address this issue, this study investigates the interaction phenomena within the row-based cooling system, through the combination of experimental observations and numerical simulations. To evaluate the interaction, a new index ΔT, defined as the return air temperature difference of in-row ACUs between different power modules, was presented. Then the effect of varying the shared hot aisle width on the interaction under different power ratios are analyzed. The results indicate that the airflow interaction intensifies with power ratios, and there exists a proper hot aisle width at different power ratios. To further relieve the interaction, improvement strategies involving airflow deflectors, vertical isolation, and horizontal isolation were proposed. With these strategies implemented, the airflow becomes more organized in the hot aisle, and ΔT increases from 0.75 °C to 1.06 °C, 1.64 °C, and 1.66 °C, respectively. Finally, installing a vertical curtain in the shared hot aisle central and sealing the top effectively alleviated the hot exhaust air interaction in higher power modules scenarios, with ΔT increased from 0.86 °C to 1.578 °C.
排式冷却系统的短气流路径可以提高数据中心的冷却效率。然而,排式空调机组(acu)靠近机架的位置显著增加了通道内的气流速度。同时,不同的电源模块共用一个热通道,容易出现热排气混流问题。现有研究忽略了气流相互作用,导致回风温度不能准确反映各模块的冷却需求。为了解决这一问题,本研究通过实验观察和数值模拟相结合的方法研究了排基冷却系统内部的相互作用现象。为了评估这种相互作用,提出了一个新的指标ΔT,定义为不同功率模块间的排acu回风温差。然后分析了不同功率比下共享热通道宽度对相互作用的影响。结果表明:气流相互作用随功率比的增大而加剧,且在不同功率比下存在合适的热通道宽度;为了进一步缓解相互作用,提出了包括气流偏转、垂直隔离和水平隔离在内的改进策略。随着这些策略的实施,热通道中的气流变得更加有组织,ΔT分别从0.75°C增加到1.06°C, 1.64°C和1.66°C。最后,在共享热通道中央安装垂直幕帘并密封顶部,有效缓解了高功率模块场景下的热排气相互作用,ΔT从0.86°C提高到1.578°C。
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引用次数: 0
Atrium residential buildings versus compact shape houses − comparative analysis of energy demand in Spain and Poland 中庭住宅与紧凑型住宅——西班牙和波兰能源需求的比较分析
IF 6.7 2区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Pub Date : 2026-02-08 DOI: 10.1016/j.enbuild.2026.117122
Wojciech Matys, Beata Sadowska, Ana Tejero González, Marta Baum, Dorota Anna Krawczyk
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引用次数: 0
Evaluating envelope retrofitting strategies to enhance thermal comfort and energy efficiency in Jordanian affordable housing 评估围护结构改造策略,以提高约旦经济适用房的热舒适性和能源效率
IF 6.7 2区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Pub Date : 2026-02-08 DOI: 10.1016/j.enbuild.2026.117077
Dana B. Khalaf, Anas Kh. Mahmoud
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引用次数: 0
Adapting building stock archetype methodology for greenhouse stock characterisation 适应温室材料特征的建筑材料原型方法
IF 6.7 2区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Pub Date : 2026-02-07 DOI: 10.1016/j.enbuild.2026.117121
Junior Zannou, Danielle Monfet, Gilbert Larochelle Martin, Didier Haillot
{"title":"Adapting building stock archetype methodology for greenhouse stock characterisation","authors":"Junior Zannou, Danielle Monfet, Gilbert Larochelle Martin, Didier Haillot","doi":"10.1016/j.enbuild.2026.117121","DOIUrl":"https://doi.org/10.1016/j.enbuild.2026.117121","url":null,"abstract":"","PeriodicalId":11641,"journal":{"name":"Energy and Buildings","volume":"48 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146134676","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}
引用次数: 0
Unsupervised Spatiotemporal Adaptive Model Transfer Framework for Nonintrusive Occupancy Detection using Environmental Data 基于环境数据的非侵入性占用检测的无监督时空自适应模型转移框架
IF 6.7 2区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Pub Date : 2026-02-07 DOI: 10.1016/j.enbuild.2026.117120
Youngmin Ji, Dongwoo Kwon, Geonwoo Ji, Daehee Kim, Sangheon Pack
{"title":"Unsupervised Spatiotemporal Adaptive Model Transfer Framework for Nonintrusive Occupancy Detection using Environmental Data","authors":"Youngmin Ji, Dongwoo Kwon, Geonwoo Ji, Daehee Kim, Sangheon Pack","doi":"10.1016/j.enbuild.2026.117120","DOIUrl":"https://doi.org/10.1016/j.enbuild.2026.117120","url":null,"abstract":"","PeriodicalId":11641,"journal":{"name":"Energy and Buildings","volume":"89 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146134671","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}
引用次数: 0
Optimizing urban morphology for thermal comfort: real-time wind-solar synchronization via ansys discovery and grasshopper 优化城市形态的热舒适:实时风能-太阳能同步通过ansys discovery和grasshopper
IF 6.7 2区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Pub Date : 2026-02-07 DOI: 10.1016/j.enbuild.2026.117118
Amel Bounnah, Pr. Fatiha Bourbia
{"title":"Optimizing urban morphology for thermal comfort: real-time wind-solar synchronization via ansys discovery and grasshopper","authors":"Amel Bounnah, Pr. Fatiha Bourbia","doi":"10.1016/j.enbuild.2026.117118","DOIUrl":"https://doi.org/10.1016/j.enbuild.2026.117118","url":null,"abstract":"","PeriodicalId":11641,"journal":{"name":"Energy and Buildings","volume":"9 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146138305","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}
引用次数: 0
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