Building and Environment最新文献_第2页

Human body area view factors for radiative heat transfer: Influence of body region, shape, and posture 辐射热传递的人体区域观因素：身体区域、形状和姿势的影响

IF 7.1 1区工程技术

Building and Environment Pub Date : 2025-05-20 DOI: 10.1016/j.buildenv.2025.113200

Stanisław Kocik , Agnes Psikuta , Joanna Ferdyn-Grygierek

{"title":"Human body area view factors for radiative heat transfer: Influence of body region, shape, and posture","authors":"Stanisław Kocik , Agnes Psikuta , Joanna Ferdyn-Grygierek","doi":"10.1016/j.buildenv.2025.113200","DOIUrl":"10.1016/j.buildenv.2025.113200","url":null,"abstract":"<div><div>The study investigates the radiative heat transfer properties of the human body by analysing its whole-body and local area view factors. At the same time, the influence of body shape (slim, regular, overweight) and posture (standing, sitting, sitting on a chair with bent elbows) is considered. Using the Radiance software, detailed simulations were conducted to derive area view factors for the whole body and specific body segments. The validation of the method was performed using an instrumented passive manikin, and the results showed a difference of less than 4 % between the measured and simulated values. The results indicated that area view factors vary over body regions and change meaningfully with body posture. The body shape, in turn, had only a minor effect on both whole-body and local area view factors. The study highlights the importance of accurate area view factor determination for predicting human radiative heat exchange, and hence thermal comfort, and optimising HVAC systems and the design of indoor spaces in built environments. The findings provide a comprehensive dataset for modelling human-environment thermal interactions, essential for applications in medicine, ergonomics, sports, and environmental engineering.</div></div>","PeriodicalId":9273,"journal":{"name":"Building and Environment","volume":"281 ","pages":"Article 113200"},"PeriodicalIF":7.1,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144134254","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}

引用次数: 0

An air balancing method for ventilation systems considering random fluctuations: Flow prediction and operating condition optimization 考虑随机波动的通风系统空气平衡方法：流量预测与工况优化

IF 7.1 1区工程技术

Building and Environment Pub Date : 2025-05-20 DOI: 10.1016/j.buildenv.2025.113197

Yi Wang , Ran Gao , Yan Tian , Ruoyin Jing , Mengchao Liu , Angui Li

{"title":"An air balancing method for ventilation systems considering random fluctuations: Flow prediction and operating condition optimization","authors":"Yi Wang , Ran Gao , Yan Tian , Ruoyin Jing , Mengchao Liu , Angui Li","doi":"10.1016/j.buildenv.2025.113197","DOIUrl":"10.1016/j.buildenv.2025.113197","url":null,"abstract":"<div><div>This study develops an air balancing method combining Multi-task Gaussian Process Regression (MTGPR) and Genetic Algorithm (GA) to overcome two shortcomings in ventilation system control. Firstly, conventional methods rely on time-averaged velocity measurements for flow modeling, which neglect to account for the phenomenon of random fluctuations in airflow. Secondly, existing methods employ implicit flow prediction models, which can only predict the damper adjustment angles based on target flow rates, while failing to provide explicit branch flow predictions. The proposed MTGPR-GA method addresses these shortcomings through two core advancements: (1) an explicit flow prediction model that accurately estimates time-averaged velocities based on instantaneous velocities from a single sample, and (2) GA-driven optimization of damper configurations and fan operations to achieve precise airflow balancing coupled with energy efficiency enhancement. To validate the effectiveness of the MTGPR-GA method, Computational Fluid Dynamics (CFD) simulation tests were conducted in both three-dimensional and two-dimensional ventilation systems. In the three-dimensional simulation, the average errors of the branch flow rates under four operating conditions were 4.04 %, 4.95 %, 2.64 %, and 3.78 %, with a fan pressure error of 5.01 %. In the two-dimensional simulation, under 30 sets of operating conditions, the average errors of the branch flow rates were 3.50 %, 4.45 %, 4.90 %, and 5.07 %, with a fan pressure error of 2.10 %. In all conditions, the damper of the most unfavorable loop remained fully open, ensuring that the fan operated with minimal energy consumption. The results demonstrate the effectiveness of the MTGPR-GA method in achieving air balancing and its energy-saving potential.</div></div>","PeriodicalId":9273,"journal":{"name":"Building and Environment","volume":"281 ","pages":"Article 113197"},"PeriodicalIF":7.1,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144131269","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}

引用次数: 0

Generation and Classification Method of Coincident Design Day for Radiant Cooling Systems 辐射冷却系统同步设计日的生成及分类方法

IF 7.1 1区工程技术

Building and Environment Pub Date : 2025-05-20 DOI: 10.1016/j.buildenv.2025.113202

Xinchao Zhang , Youming Chen , Liu Yang , Yan Liu

{"title":"Generation and Classification Method of Coincident Design Day for Radiant Cooling Systems","authors":"Xinchao Zhang , Youming Chen , Liu Yang , Yan Liu","doi":"10.1016/j.buildenv.2025.113202","DOIUrl":"10.1016/j.buildenv.2025.113202","url":null,"abstract":"<div><div>Radiant cooling systems have advantages in energy saving, thermal comfort with low noise, and space-saving. The coincident design days (CDDs) of convective cooling systems are not suitable for radiant cooling systems design. The generation of representative CDD is helpful for radiant cooling systems design and popularity. 800,000 sample rooms with radiant cooling panel (RCP) systems were generated for each typical city as a CDD dataset. Each sample room is a random combination of fourteen room characteristic parameters. The generation process requires feature importance analysis for room characteristic parameters. Extreme gradient boosting (XGBoost) was used to classify CDDs. For each category, the CDD with the highest presence frequency was selected as representative CDD. 80,000 sample rooms were generated for each typical city. Theoretical design cooling loads were calculated by multi-year hourly weather data. Peaking cooling loads were calculated by representative CDDs. The distribution range of relative deviation is relatively uniform. The correct rate of representative CDDs was used to evaluate the applicability of representative CDDs. Within the three threshold ranges of 0.75%, 1%, and 1.25%, the total correct rates of typical cities are 85.95%, 91.92% and 97.50% for Harbin; 93.19%, 97.49% and 98.75% for Beijing; 96.83%, 98.68% and 99.99% for Changsha; 99.24%, 99.93% and 100% for Guangzhou. The CDDs of the RCP systems could be used in radiant floor cooling system. Representative CDDs are suitable for radiant cooling systems design.</div></div>","PeriodicalId":9273,"journal":{"name":"Building and Environment","volume":"281 ","pages":"Article 113202"},"PeriodicalIF":7.1,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144134253","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}

引用次数: 0

Visual clarity of several learning media under different daylight-opening positions and areas based on students’ performance and perception 基于学生的表现和感知，几种学习媒体在不同采光位置和区域下的视觉清晰度

IF 7.1 1区工程技术

Building and Environment Pub Date : 2025-05-20 DOI: 10.1016/j.buildenv.2025.113201

Christy Vidiyanti , Surjamanto Wonorahardjo , M Donny Koerniawan , Rizki A Mangkuto

{"title":"Visual clarity of several learning media under different daylight-opening positions and areas based on students’ performance and perception","authors":"Christy Vidiyanti , Surjamanto Wonorahardjo , M Donny Koerniawan , Rizki A Mangkuto","doi":"10.1016/j.buildenv.2025.113201","DOIUrl":"10.1016/j.buildenv.2025.113201","url":null,"abstract":"<div><div>Digital display generally uses special lighting that produces different luminance from conventional displays. This study examined the complex effects of varying learning media (whiteboard, glassboard, projector, and smart television [TV]) in various daylight settings — window position (rear and side windows) and opening area (interior window-to-wall ratio [<sub>i</sub>WWR] value: 9 %, 47 %, and 85 %) controlled by blackout roller blinds — to produce visual clarity (VCl), which was assessed objectively (accuracy) and subjectively (perception). Based on the optical characteristics, three groups of learning media were created: non-lit devices (whiteboard and glassboard), reflected-lit devices (projector), and self-lit devices (smart TV). The results showed that coordinating daylight settings and learning media can optimise the VCl. A 10 % increase in <sub>i</sub>WWR value increases 2 % accuracy and 3 % VCl perception for non-lit but decreases 0.2 % accuracy for luminous learning media (reflected-lit and self-lit devices) — the VCl perception of those devices peaks at a 2 % increase when the curtains are half open. This study proposes a spatial VCl index formed by the sufficient scores of accuracy and perceived clarity across the room. For spatial VCl optimisation on non-lit devices, the side window and 81 % <sub>i</sub>WWR were proposed, and 81 % <sub>s</sub>VCl was achieved. By contrast, a rear window and a 60–64 % <sub>i</sub>WWR are recommended when using luminous learning media, and 91 % <sub>s</sub>VCl for reflected- and 100 % <sub>s</sub>VCl for self-lit devices were achieved. This study developed practical guidelines by providing white luminance thresholds for media displays, offering adaptable solutions for diverse classroom settings and learning media.</div></div>","PeriodicalId":9273,"journal":{"name":"Building and Environment","volume":"281 ","pages":"Article 113201"},"PeriodicalIF":7.1,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144139696","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}

引用次数: 0

Ten questions concerning renewable energy communities 关于可再生能源社区的十个问题

IF 7.1 1区工程技术

Building and Environment Pub Date : 2025-05-20 DOI: 10.1016/j.buildenv.2025.113193

A. Fichera , E. Marrasso , C. Martone , G. Pallotta , M. Sasso , R. Volpe

{"title":"Ten questions concerning renewable energy communities","authors":"A. Fichera , E. Marrasso , C. Martone , G. Pallotta , M. Sasso , R. Volpe","doi":"10.1016/j.buildenv.2025.113193","DOIUrl":"10.1016/j.buildenv.2025.113193","url":null,"abstract":"<div><div>Renewable energy communities (RECs) represent a transformative approach to achieving sustainable energy systems at local levels. By integrating various renewable energy sources and advanced technologies, RECs can efficiently target energy self-sufficiency and endorse renewable distribution while promoting environmental, economic and social benefits. Despite their increasing relevance, the complexity of developing and operating RECs, as well as many of the management aspects regarding the distribution of shared energy and, therefore, the economic gain, necessitate comprehensive modelling and strategic planning. This paper addresses the multidimensional aspects of RECs though a structured approach based on ten pivotal questions, covering REC definition, technological components, optimization and simulation methods, monitoring and management strategies, business model and policies, and future urban trends such as Positive Energy Districts. The questions were selected considering a logical structure of all fundamental aspects and progressing from the initial state to the current and future of the RECs, based on an accurate assessment of the regulatory contexts, the supporting policies, the scientific literature and the results of case studies and carried out projects. The analysis highlights that RECs contribute significantly to achieving climate and social goals, yet their diffusion is deeply influenced by the regulatory framework, but economic incentives and citizen involvement also play a significant role for their success.</div></div>","PeriodicalId":9273,"journal":{"name":"Building and Environment","volume":"281 ","pages":"Article 113193"},"PeriodicalIF":7.1,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144146704","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}

引用次数: 0

Improved spatio-temporal graph convolutional network for forecasting of PM2.5 concentrations in underground powerhouse caverns group 改进时空图卷积网络预测地下厂房洞室群PM2.5浓度

IF 7.1 1区工程技术

Building and Environment Pub Date : 2025-05-20 DOI: 10.1016/j.buildenv.2025.113198

Liangsi Xu , Hongling Yu , Xiaoling Wang , Xiaofeng Qu , Baoxi Liu , Chengyu Yu

{"title":"Improved spatio-temporal graph convolutional network for forecasting of PM2.5 concentrations in underground powerhouse caverns group","authors":"Liangsi Xu , Hongling Yu , Xiaoling Wang , Xiaofeng Qu , Baoxi Liu , Chengyu Yu","doi":"10.1016/j.buildenv.2025.113198","DOIUrl":"10.1016/j.buildenv.2025.113198","url":null,"abstract":"<div><div>Accurate prediction of PM2.5 in underground powerhouse caverns group (UPCG) is of great significance for safeguarding the health of construction personnel and optimizing ventilation energy consumption. However, existing studies on PM2.5 prediction have not considered the impact of wind fields on the diffusion of PM2.5 or the spatio-temporal multi-scale information, which limits the accuracy of prediction models. To address these issues, this study proposed an improved Spatio-Temporal Graph Convolutional Network (STGCN) for predicting PM2.5 in UPCG under construction ventilation. Specifically, skip connections were incorporated between two feature pyramids to extract multi-scale spatio-temporal information from environmental features. Then, the PM2.5 diffusion distance map based on the Gaussian diffusion model was proposed as the adjacency matrix. Additionally, a Transformer-based spatio-temporal block fusion model was proposed to build a more efficient STGCN. The results demonstrate that the proposed model achieves smaller MAE and RMSE, as well as superior R<sup>2</sup>, compared to Transformer and CNN-LSTM in both single-step and multi-step prediction tasks. Ablation experiments confirmed the effectiveness of each proposed module. The model accurately predicts PM2.5 concentrations in UPCG, providing reliable support for ventilation requirements regarding decision-making.</div></div>","PeriodicalId":9273,"journal":{"name":"Building and Environment","volume":"281 ","pages":"Article 113198"},"PeriodicalIF":7.1,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144115694","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}

引用次数: 0

Life Cycle Assessment of Reinforced Concrete Residential Buildings in Nepal: Pathways to Carbon Footprint Reduction through Sustainable Construction 尼泊尔钢筋混凝土住宅的生命周期评估：通过可持续建筑减少碳足迹的途径

IF 7.1 1区工程技术

Building and Environment Pub Date : 2025-05-20 DOI: 10.1016/j.buildenv.2025.113199

Bibek Bhattarai , Bikram Singh Bhattarai , Ramesh Kumar Maskey , Silu Bhochhibhoya

{"title":"Life Cycle Assessment of Reinforced Concrete Residential Buildings in Nepal: Pathways to Carbon Footprint Reduction through Sustainable Construction","authors":"Bibek Bhattarai , Bikram Singh Bhattarai , Ramesh Kumar Maskey , Silu Bhochhibhoya","doi":"10.1016/j.buildenv.2025.113199","DOIUrl":"10.1016/j.buildenv.2025.113199","url":null,"abstract":"<div><div>Nepal’s massive post-2015 earthquake reconstruction has sparked a construction boom that carries substantial carbon implications. An LCA was conducted for a representative reinforced concrete dwelling using the ISO 14040/44 and EN 15978 frameworks, with material data from the ICE v3.0 database and Nepal Electricity Authority (NEA) grid emission factors. Results indicate a total embodied carbon of about 195,992 kg CO₂-eq for the structure, with cementitious concrete and mortar (cement), bricks, and reinforcing steel accounting for the bulk of emissions (over ∼70% of embodied CO₂). Over the building’s life, operational energy use surpasses embodied energy after roughly 40–50 years. Sensitivity analysis showed that under Nepal’s climate (cool temperate) the break-even occurs around year 42, and material contributions remain dominated by cement, brick, and steel. A Monte Carlo uncertainty analysis yielded moderate confidence bounds on these outcomes. These findings, in the context of Himalaya region urban growth, have broader relevance to similarly urbanizing South Asian contexts.</div></div>","PeriodicalId":9273,"journal":{"name":"Building and Environment","volume":"281 ","pages":"Article 113199"},"PeriodicalIF":7.1,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144167335","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}

引用次数: 0

Climate-sensitive street design: Evaluating summer pedestrian activity and behavioral thermal adaptation on the high line, NYC 气候敏感街道设计：评估纽约市高架线夏季行人活动和行为热适应

IF 7.1 1区工程技术

Building and Environment Pub Date : 2025-05-20 DOI: 10.1016/j.buildenv.2025.113203

YouJoung Kim , Robert D. Brown

{"title":"Climate-sensitive street design: Evaluating summer pedestrian activity and behavioral thermal adaptation on the high line, NYC","authors":"YouJoung Kim , Robert D. Brown","doi":"10.1016/j.buildenv.2025.113203","DOIUrl":"10.1016/j.buildenv.2025.113203","url":null,"abstract":"<div><div>With climate change, summer heat stress poses a critical challenge to urban residents, impacting public health and outdoor activities. Despite growing attention to outdoor thermal comfort, behavioral thermal adaptation—how individuals adjust behavior to seek thermally comfortable spaces—remains understudied. This study addresses this gap by examining how climate-sensitive street design mediates the relationship between outdoor thermal comfort and pedestrian activity, focusing on The High Line, New York City. Using on-site microclimate measurements and unobtrusive video observations at five sites, panel data analysis evaluates street design’s influence on pedestrian activity and identifies thermal threshold levels. Key findings reveal that The High Line maintained cooler conditions than Mid-Manhattan, primary due to its high vegetation density and proximity to the river. Street geometry—defined by parameters such as Sky View Factor (SVF), Tree Canopy Cover Ratio (TCCR), and Height-to-Width (H/W) ratio—played a significant role in shaping solar exposure and influencing pedestrians’ thermal comfort. Walking Density (WD) was largely driven by air temperature, whereas Stationary Ratio (SR) and Seat Occupancy Ratio (SOR) were more sensitive to solar radiation and shading. Additionally, lower SVFs correlated with higher tolerance for air temperature, emphasizing the critical role of shade in improving thermal comfort<em>.</em> By establishing data-driven thermal thresholds, our findings provide empirical benchmarks for climate-sensitive street design. This study advances urban climate research by linking microclimate data with behavioral responses, offering a novel framework for heat-resilient street design.</div></div>","PeriodicalId":9273,"journal":{"name":"Building and Environment","volume":"281 ","pages":"Article 113203"},"PeriodicalIF":7.1,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144167333","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}

引用次数: 0

Thermal performance of post-disaster housing and its impact on occupant comfort: An integrated ML-ABM approach 灾后住房的热性能及其对居住者舒适度的影响：一个综合的ML-ABM方法

IF 7.1 1区工程技术

Building and Environment Pub Date : 2025-05-20 DOI: 10.1016/j.buildenv.2025.113205

Yinqiao Tao , Yibin Ao , Yi Long , Igor Martek

{"title":"Thermal performance of post-disaster housing and its impact on occupant comfort: An integrated ML-ABM approach","authors":"Yinqiao Tao , Yibin Ao , Yi Long , Igor Martek","doi":"10.1016/j.buildenv.2025.113205","DOIUrl":"10.1016/j.buildenv.2025.113205","url":null,"abstract":"<div><div>This study addresses the deterioration of thermal performance in post-disaster rural housing envelopes in hot-humid climates. By integrating a synergistic framework of Random Forest (RF), Shapley Additive Explanations (SHAP) interpretability analysis, and Agent-Based Modeling (ABM), we reveal the dynamic mechanisms by which architectural features regulate cooling dynamics via thermal sensation mediation. Empirical data from 231 post-disaster reconstructed dwellings in Mianzhu, Sichuan Province, China, demonstrate that roof insulation (28.3 % SHAP contribution), Window-to-Wall Ratio (WWR) (25.9 %), and exterior wall insulation (24.7 %) are core drivers of TSV. High WWR (>40 %) combined with single-pane glazing (<em>ϕ</em>=+0.23) significantly increases thermal discomfort risks, while double-glazed insulation (<em>U</em> ≤ 2.8 W/m²K) with moderate WWR (35 %-45 %) effectively mitigates overheating. ABM simulations reveal non-insulated buildings exhibit a temperature rise rate of 1.51 °C/h, triggering air conditioning (AC) activation 0.92 h earlier than for optimized structures. Envelope optimization reduces daily AC usage from 5.75 h to 3.2 h (-44.3 %) while increasing fan utilization by 6.6 %. The proposed Machine Learning-Agent-Based Modeling(ML-ABM) framework is validated and transferable to diverse building typologies (e.g., urban residences, offices) in hot-humid climates. The findings identify dual energy-saving pathways; these being passive thermal attenuation via inertial modulation, and behavior-guided active cooling, both validating the efficacy of \"daylighting-insulation-ventilation\" co-design. Further, findings provide empirical evidence of the benefits of transitioning from single-parameter optimization to dynamic system control in hot-humid climate retrofits.</div></div>","PeriodicalId":9273,"journal":{"name":"Building and Environment","volume":"281 ","pages":"Article 113205"},"PeriodicalIF":7.1,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144146662","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}

引用次数: 0

Rethinking local thermal sensation prediction: The role of heat flux over skin temperature in personalized models 重新思考局部热感觉预测：热流在个性化模型中对皮肤温度的作用

IF 7.1 1区工程技术

Building and Environment Pub Date : 2025-05-19 DOI: 10.1016/j.buildenv.2025.113195

Jaafar Younes, Dolaana Khovalyg

{"title":"Rethinking local thermal sensation prediction: The role of heat flux over skin temperature in personalized models","authors":"Jaafar Younes, Dolaana Khovalyg","doi":"10.1016/j.buildenv.2025.113195","DOIUrl":"10.1016/j.buildenv.2025.113195","url":null,"abstract":"<div><div>As personal environmental control systems (PECS) gain prominence over conventional whole-space conditioning, accurately predicting personalized and localized thermal sensation (TS) becomes increasingly important. This study systematically evaluates the relative performance of two physiological predictors—local skin temperature and local heat flux (rate of heat dissipation from body)— in data-driven models of localized TS. Drawing on data from two human subject experiments that captured both physiological signals and subjective thermal responses, we address key research questions concerning <strong>(i)</strong> the predictive accuracy of skin temperature versus heat flux, <strong>(ii)</strong> regional variations in model performance across 16 body segments, <strong>(iii)</strong> the influence of different modelling strategies (i.e., separate models per subject/body part versus a unified model with individual-specific features), and <strong>(iv)</strong> model robustness when applied to an independent dataset.</div><div>Results indicate that incorporating personalized and localized modelling strategies can reduce prediction error relative to non-personalized/localized approaches. Most body regions exhibited comparable performance between skin temperature- and heat flux-based models, while skin temperature-based models outperformed in extremities, such as the hand (error of 0.42 versus 0.56). We hypothesize that this performance difference can arise from the complex relationship between heat flux and TS in extremities due to the influence of vasomotor thermoregulation. Conversely, when testing model robustness on an independent dataset, heat flux-based models exhibit a lower error for the hand (0.36 versus 0.49). Findings establish heat flux as a viable alternative to skin temperature in predicting local TS. These advancements are crucial in optimizing the design and control of next-generation PECS.</div></div>","PeriodicalId":9273,"journal":{"name":"Building and Environment","volume":"281 ","pages":"Article 113195"},"PeriodicalIF":7.1,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144115697","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}

引用次数: 0