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Rethinking building energy performance gap: a workflow for bridging measured, modeled, designed, and optimized strategies – a review with real-world examples 重新思考建筑能源绩效差距:连接测量,建模,设计和优化策略的工作流程-与现实世界的例子回顾
IF 7.1 2区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Pub Date : 2026-01-26 DOI: 10.1016/j.enbuild.2026.117065
Shoumik Desai , Burak Gunay , Mohamed Ouf , Weihao Liu , Joe Coady
The significant gap between a building’s predicted and actual energy use, known as the energy performance gap (EPG), remains a persistent barrier to achieving decarbonization goals. Conventional analyses often attribute this gap to single causes, such as operational faults or modelling inaccuracies, failing to capture the interplay of issues across the building lifecycle. This paper introduces a structured diagnostic workflow designed to deconstruct the EPG by systematically examining four lenses of performance: As-Operated, As-Modeled, As-Designed, and As-Prescribed Intended Performance. The workflow is demonstrated through a detailed case study of a large healthcare facility. The analysis reveals that an observed 48% overconsumption of natural gas was not a simple operational error but is symptomatic of a cascading discrepancy. The workflow traces the issue back to its source, demonstrating how a suboptimal design (Lens 3) was inaccurately represented in a simplified energy model (Lens 2), which in turn failed to predict the inefficient operational reality (Lens 1). The key contribution of this work is developing a robust, diagnostic method that allows stakeholders to move beyond merely quantifying the EPG to identify its distinct root causes in design, modeling, and operation. This approach provides a more granular understanding of the problem, enabling targeted and effective mitigation strategies to EPG.
建筑物的预测和实际能源使用之间的巨大差距,被称为能源性能差距(EPG),仍然是实现脱碳目标的持久障碍。传统的分析通常将这种差距归因于单一原因,例如操作错误或建模不准确,未能捕捉到整个建筑生命周期中问题的相互作用。本文介绍了一个结构化的诊断工作流程,旨在通过系统地检查四个性能镜头来解构EPG:按操作,按建模,按设计和按规定的预期性能。通过一个大型医疗机构的详细案例研究演示了该工作流。分析表明,观察到的48%的天然气过量消耗不是一个简单的操作错误,而是级联误差的症状。工作流追溯问题的根源,演示了次优设计(Lens 3)如何在简化的能量模型(Lens 2)中不准确地表示,而简化的能量模型又无法预测低效的操作现实(Lens 1)。这项工作的关键贡献是开发了一种稳健的诊断方法,使利益相关者能够超越仅仅量化EPG,从而确定其在设计、建模和操作中的独特根源。这种方法提供了对问题的更细粒度的了解,从而实现了针对EPG的有针对性和有效的缓解策略。
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引用次数: 0
Self-Powered dynamic Façades using thermoelectric generators and phase change materials 使用热电发电机和相变材料的自供电动态faradades
IF 7.1 2区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Pub Date : 2026-01-26 DOI: 10.1016/j.enbuild.2026.117066
Zia Mohajerzadeh , Mohammad Elmi , Amin Nozariasbmarz , Julian Wang , Rahman Azari
Residential and commercial buildings in the U.S. are major energy consumers, with demand projected to rise significantly in the coming decades. This research develops a self-powered dynamic façade that integrates thermoelectric generators (TEGs) with phase change materials (PCMs) to convert solar-driven temperature gradients into electricity for automated shading. While TEG performance is constrained by thermal management, PCMs act as latent-heat buffers that stabilize the cold side and help maintain larger temperature differences.
A prototype combining two 4 cm × 4 cm TEG modules with a 29 °C BioPCM was designed and evaluated in both controlled solar chamber conditions and outdoor testing. In the solar chamber, the measured surface temperature difference between the sun-exposed aluminum fin and the outer PCM container reached approximately 24 °C under 800 W/m2 irradiance with PCM integration. This enabled a 1.5 V supercapacitor to charge to 1.0 V and intermittently drive a 3 V DC motor to rotate a 39 cm × 7 cm aluminum louver, consuming an average of 19.5 mW. Outdoor tests in a humid continental climate (ASHRAE 5A) showed strong weather dependence and demonstrated that black-coated fins achieved stored voltages above 400 mV.
To increase thermal input, a Fresnel lens and acrylic dome were added. This optical–thermal configuration improved voltage generation by ∼ 20% by concentrating solar flux and reducing convective losses. Under these enhanced conditions, the 29 °C PCM did not always fully melt, prompting evaluation of a 20 °C PCM to activate the phase-change process more completely. The 20 °C PCM fully melted and produced higher early-stage stored voltage (∼550 mV) compared with the 29 °C PCM (∼450 mV), although its cooling duration was shorter once fully liquid. Overall, the results show that melting-point selection, optical concentration, and thermal storage can be combined to advance façade-integrated thermoelectric systems toward autonomous operation and lower building energy demand.
美国的住宅和商业建筑是主要的能源消费者,预计未来几十年的需求将显著上升。本研究开发了一种自供电动态遮阳装置,将热电发电机(teg)与相变材料(pcm)集成在一起,将太阳能驱动的温度梯度转化为电力,用于自动遮阳。虽然TEG性能受到热管理的限制,但pcm可以作为潜热缓冲器,稳定冷侧并帮助维持较大的温差。
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引用次数: 0
Future building cooling energy demand under climate change in the Mediterranean region 气候变化下地中海地区未来建筑制冷能源需求
IF 7.1 2区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Pub Date : 2026-01-26 DOI: 10.1016/j.enbuild.2026.117058
Lei Zhu , Lingye Leng , Yong Huang , Sun Lei
The objective of the research team in the current study was to establish the presence and the percentage change in cooling energy usage in Italian residential buildings in relation to climate change. It is a specific intervention to establish cooling demands, as it analyses historical trends and projections of Cooling Degree Hours (CDHs). The study will also focus on identifying high-priority areas for energy actions by comparing population patterns with CDHs. Based on hourly outdoor temperature predictions from the Weather Research and Forecasting (WRF) Model, both CDHs for the cooling seasons between 2002 and 2021 and for 2050 and 2080, according to the IPCC predictions, were calculated. Due to the Mediterranean region’s geographic vulnerability and Italy’s diverse climate, Italy was selected as a case study. The data on CDH were clustered into 4 5-year intervals for analytical convenience. The median CDHs have increased twice between 2012 and 2016 and four times between 2017 and 2020; nevertheless, the levels remained unchanged between 2002 and 2011. Following that, it increased exponentially. It is projected to rise the most in 2080 under the RCP8.5 scenario, with the highest concentrations found in urban areas, the Po Valley, and the southern coastal regions. These findings highlight the importance of modernizing Italy’s building stock to make buildings more resilient and efficient, as well as the anticipated significant growth in cooling requirements in buildings in the future.
在当前的研究中,研究小组的目标是确定意大利住宅建筑中与气候变化有关的冷却能源使用的存在和百分比变化。它分析了冷却度小时(cdh)的历史趋势和预测,是确定冷却需求的具体干预措施。这项研究还将把重点放在通过比较人口模式和发展中国家来确定能源行动的高优先领域。根据气候研究与预报(WRF)模型的每小时室外温度预测,计算了2002年至2021年以及IPCC预测的2050年至2080年冷却季节的cdh。由于地中海地区的地理脆弱性和意大利多样的气候,意大利被选为案例研究。为便于分析,CDH数据聚类为4个5年间隔。在2012年至2016年期间,CDHs中位数增长了两倍,在2017年至2020年期间增长了四倍;然而,在2002年至2011年期间,这一水平保持不变。在那之后,它呈指数增长。在RCP8.5情景下,预计2080年的上升幅度最大,城市地区、波河流域和南部沿海地区的浓度最高。这些发现突出了意大利建筑存量现代化的重要性,使建筑更具弹性和效率,以及未来建筑冷却需求的预期显着增长。
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引用次数: 0
Of demographics, technology, and geography: The social determinants of energy consumption patterns and user behaviour in Saudi Arabia’s residential sector 人口、技术和地理:沙特阿拉伯住宅部门能源消费模式和用户行为的社会决定因素
IF 7.1 2区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Pub Date : 2026-01-26 DOI: 10.1016/j.enbuild.2026.117061
Muhammad Asif , Benjamin K. Sovacool , Zulfiqar Ali , Erin Heinz , Thomas Alan Kwan , Johan Nordensvärd , Arunima Krishna , Patrick Thollander , Patrik Rohdin , Weimin Zhang
Driven by increased exposure to climate change hazards and energy price reforms, the Kingdom of Saudi Arabia (KSA) is keen to transform its energy-intensive building sector, with air-conditioning (AC) accounting for 70% of the energy used in buildings. While much past research has focused on technological solutions, this study investigates some of the critical AC usage patterns and energy conservation behavior in the Saudi residential sector. Harnessing a novel and original public survey with spatial granularity, this study explores socio-demographic, economic, and behavioral determinants of AC usage, thermostat preferences, and energy conservation attitudes. The study identifies household income and energy expenditure as among the more influential predictors of user behavior. Lower-income households are significantly less likely to use AC extensively, which may indicate potential equity and affordability concerns, while higher-income groups exhibit extended usage patterns, particularly year-round use and daily operation exceeding 18 h. Education, dwelling type, and ownership status are also influential factors, though with a modest effect. Regional differences, particularly in Makkah and Riyadh, reveal further contextual variations in behavior. AC switch-off and thermostat adjustment attitudes reflect a mix of economic constraints and habitual behavior. Drawing from these findings, the study underscores the need for integrated policy frameworks that combine efficiency measures with targeted behavioral interventions.
在气候变化风险增加和能源价格改革的推动下,沙特阿拉伯王国(KSA)热衷于转变其能源密集型建筑行业,空调(AC)占建筑能耗的70%。虽然过去的许多研究都集中在技术解决方案上,但本研究调查了沙特住宅部门的一些关键的空调使用模式和节能行为。利用一项具有空间粒度的新颖和原始的公众调查,本研究探讨了空调使用、恒温器偏好和节能态度的社会人口、经济和行为决定因素。该研究认为,家庭收入和能源支出是影响用户行为的因素之一。低收入家庭广泛使用空调的可能性明显较低,这可能表明潜在的公平和负担能力问题,而高收入群体则表现出长期的使用模式,特别是全年使用和每日运行超过18 h。教育程度、居住类型和所有权状况也是影响因素,尽管影响不大。地区差异,特别是在麦加和利雅得,进一步揭示了行为的背景差异。交流开关和恒温器调节的态度反映了经济约束和习惯行为的混合。根据这些发现,该研究强调需要建立综合政策框架,将效率措施与有针对性的行为干预相结合。
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引用次数: 0
Surrogate model evaluation and building energy benchmarking for commercial buildings 商业建筑替代模型评价与建筑能源标杆
IF 7.1 2区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Pub Date : 2026-01-24 DOI: 10.1016/j.enbuild.2026.117033
Venkatesh Chinde , Rohit Chintala, Janghyun Kim, Alex Chapin, Jie Xiong, Katherine Fleming, Brian L. Ball
Building energy consumption benchmarking involves challenges associated with various energy patterns for different building types; heating, ventilating, and air-conditioning (HVAC) system types; and climates. Given significant variation in energy use patterns, accurate prediction of long-term energy use using surrogate models remains challenging. Multiple linear regression (MLR) is commonly used for building energy benchmarking because of its simple structure; however, it lacks accuracy compared to other black-box models. Although many studies have compared surrogate models and offer guidance on model selection based on metrics, they do not provide detailed analysis on improving the surrogate model accuracy. In this paper, we implement a surrogate model using polynomial ridge regression (i.e., MLR with interaction terms combined with ridge regularization) for small office and retail strip mall buildings across six HVAC system types and all climate zones, for electricity and natural gas in baseline and proposed scenarios. A simulation workflow is developed using OpenStudio™/EnergyPlus™ to generate simulation data using measures over a wide range of efficiency inputs. Enhancements based on statistical insights are used for improving the model accuracy using filters, input transformations, and change points. Surrogate models achieved average coefficient of variation of the root mean squared error (CVRMSE) values of 2.17, 1.06, 2.05, and 3.26 for proposed electricity, proposed natural gas, baseline electricity, and baseline natural gas, respectively, with enhancements reducing CVRMSE by an average of 14.9% across all combinations. We provide model interpretation via Shapley additive explanations to determine which input variables most influence energy consumption and provide supportive arguments for enhancements.
建筑能源消耗基准涉及不同建筑类型的不同能源模式所带来的挑战;供暖、通风和空调(HVAC)系统类型;和气候。鉴于能源使用模式的显著变化,使用替代模型准确预测长期能源使用仍然具有挑战性。多元线性回归(MLR)因其结构简单而被广泛应用于建筑能耗基准分析;然而,与其他黑箱模型相比,它缺乏准确性。尽管许多研究已经比较了代理模型,并提供了基于度量的模型选择指导,但它们并没有对如何提高代理模型的准确性进行详细的分析。在本文中,我们使用多项式岭回归(即,与交互项结合岭正则化的MLR)实现了一个代理模型,该模型适用于六种HVAC系统类型和所有气候带的小型办公和零售条形商场建筑,用于基线和建议场景中的电力和天然气。使用OpenStudio™/EnergyPlus™开发了一个仿真工作流程,通过广泛的效率输入来生成仿真数据。基于统计洞察力的增强用于使用过滤器、输入转换和更改点来提高模型准确性。替代模型对建议电力、建议天然气、基线电力和基线天然气的均方根误差(CVRMSE)的平均变异系数分别为2.17、1.06、2.05和3.26,在所有组合中,增强后的CVRMSE平均降低了14.9%。我们通过沙普利加性解释提供模型解释,以确定哪些输入变量最影响能源消耗,并为增强提供支持性论据。
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引用次数: 0
Surrogate models for evaluating HVAC retrofit options in multi-unit residential buildings 评价多单元住宅暖通空调改造方案的替代模型
IF 7.1 2区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Pub Date : 2026-01-24 DOI: 10.1016/j.enbuild.2026.117060
Harry Vallianos, Costa Kapsis
This study investigates the use of surrogate modeling to optimize retrofit strategies in multi-unit residential buildings (MURBs), including HVAC systems. A comprehensive synthetic dataset was generated using EnergyPlus simulations, parameterized across a wide range of building and system variables, including ten distinct HVAC configurations. Multiple surrogate modeling approaches were evaluated, including single-output and multi-output artificial neural networks (ANNs) as well as Light Gradient Boosting Machine (LGBM) models. The models were trained to predict key performance metrics: Energy Use Intensity (EUI), Thermal Energy Demand Intensity (TEDI), and Cooling Energy Demand Intensity (CEDI). Results show that multi-output ANN models, with HVAC system as a categorical input, achieved high accuracy (R2 > 0.997 and RMSE<2.2kWh/m2/year) and superior generalization compared to both single-output ANNs and LGBM models, while also reducing computational effort. The findings underscore the effectiveness of ANN-based surrogate models for rapid and accurate evaluation of retrofit scenarios involving diverse HVAC systems, supporting more efficient decision-making in building energy retrofits.
本研究探讨了在包括暖通空调系统在内的多单元住宅建筑(murb)中使用替代模型来优化改造策略。使用EnergyPlus模拟生成了一个综合数据集,参数化了广泛的建筑和系统变量,包括十种不同的暖通空调配置。评估了多种代理建模方法,包括单输出和多输出人工神经网络(ANNs)以及光梯度增强机(LGBM)模型。这些模型经过训练,可以预测关键性能指标:能源使用强度(EUI)、热能需求强度(TEDI)和冷却能源需求强度(CEDI)。结果表明,与单输出人工神经网络和LGBM模型相比,以暖通空调系统作为分类输入的多输出人工神经网络模型获得了更高的准确率(R2 >; 0.997和RMSE<;2.2kWh/m2/year)和更好的泛化,同时减少了计算量。研究结果强调了基于人工神经网络的替代模型的有效性,该模型可以快速准确地评估涉及不同HVAC系统的改造方案,从而支持更有效的建筑能源改造决策。
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引用次数: 0
A personalized federated meta-learning approach for distributed load forecasting of buildings 建筑分布式负荷预测的个性化联合元学习方法
IF 7.1 2区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Pub Date : 2026-01-24 DOI: 10.1016/j.enbuild.2026.117055
Qi Chang , Jie Kang , Lingfeng Tang
Building load forecasting is crucial to its operation optimization. Federated learning enables distributed building load forecasting while preserving data privacy. However, a global model via directly aggregating local models cannot effectively capture personalized energy consumption patterns. Moreover, fine-tuning the global model may face the risk of overwriting globally shared knowledge. To address this issue, this paper proposes a personalized federated meta-learning approach for distributed building load forecasting. The framework consists of two parts. The first is a federated meta-learning-based global model that incorporates meta-learned auxiliary variables to extract global model parameters optimized across buildings, thereby acquiring globally shared knowledge. The second is a multi-channel residual compensation model, trained locally to capture residuals between the global prediction and actual loads, which acquires personalized knowledge not represented by the global model. The final prediction is obtained by summing the outputs of the global and personalized models, effectively balancing global generalization and local personalization. The proposed method is validated on the real-world dataset Building Data Genome Project 2, with conformal prediction employed to quantify the model uncertainty. Experimental results demonstrate that the proposed model not only improves prediction accuracy but also provides reliable uncertainty estimation through conformal prediction-based intervals.
建筑物负荷预测对其运行优化至关重要。联邦学习支持分布式建筑负荷预测,同时保护数据隐私。然而,直接聚合局部模型的全局模型无法有效捕获个性化的能源消耗模式。此外,对全球模型进行微调可能会面临覆盖全球共享知识的风险。为了解决这一问题,本文提出了一种个性化的联合元学习方法用于分布式建筑负荷预测。该框架由两部分组成。第一个是基于元学习的联邦全局模型,该模型结合元学习辅助变量来提取跨建筑物优化的全局模型参数,从而获得全局共享知识。第二种是多通道残差补偿模型,通过局部训练来获取全局预测与实际负荷之间的残差,从而获得全局模型无法表示的个性化知识。将全局模型和个性化模型的输出相加得到最终的预测结果,有效地平衡了全局泛化和局部个性化。该方法在构建数据基因组计划2的实际数据集上进行了验证,并采用保形预测来量化模型的不确定性。实验结果表明,该模型不仅提高了预测精度,而且通过保形预测区间提供了可靠的不确定性估计。
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引用次数: 0
Building climate zoning in the sea-land interlaced region based on the clustering method 基于聚类方法的海陆交错区气候区划构建
IF 7.1 2区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Pub Date : 2026-01-24 DOI: 10.1016/j.enbuild.2026.117040
Jingjie Tan , Xiaojing Zhang , Ziyang Hao , Jingchao Xie , Jiaping Liu
To address the boundary ambiguity issue in building climate zoning for sea-land interlaced region at low-latitudes in China, this study proposes a collaborative zoning method that integrates density-based clustering with subsequent classification. The method enables the identification of arbitrarily shaped climate clusters and the precise treatment of noisy samples in sea-land transition zones, thereby overcoming the limitations of K-means and hierarchical clustering approaches, which assume spherical clusters and rigid boundaries. The ERA5 high-resolution meteorological data (with a spatial resolution of 0.25° × 0.25°) is used to construct a zoning index system incorporating three elements: temperature, precipitation, and radiation. By optimizing the dual-index joint classification, the proportion of boundary-disputed samples is reduced to 0.76%, with key thresholds identified as an annual total horizontal solar radiation of 1573 kWh/m2 and a coldest-month mean temperature of 15 °C. The zoning results show that the low-latitude regions in China can be distinctly partitioned along the coastline into a New Hot-Summer and Warm-Winter Zone (wherein buildings must adequately address the heat prevention requirements and rain protection during summer) and an Extreme Hot-Humid Zone (wherein buildings require year-round heat prevention, rain protection, and full-shading design). Building energy simulations across 19 typical cities reveal that the average building energy consumption is significantly higher in the Extreme Hot-Humid Zone (101.27 kWh·m−2·a−1) than in the New Hot-Summer and Warm-Winter Zone (57.07 kWh·m−2·a−1). Moreover, the rate of energy consumption changes peaks across the climate zone boundary. These simulation results effectively validate the accuracy of the new building climate zoning.
针对中国低纬度海陆交错带气候区划中存在的边界模糊问题,提出了一种基于密度的聚类与后续分类相结合的协同区划方法。该方法能够识别任意形状的气候簇和精确处理海陆过渡带的噪声样本,从而克服了k均值和分层聚类方法的局限性,这些方法假设球形簇和刚性边界。利用ERA5高分辨率气象数据(空间分辨率为0.25° × 0.25°)构建了包含温度、降水和辐射三要素的分区指标体系。通过优化双指标联合分类,边界争议样本比例降至0.76%,关键阈值确定为年水平太阳总辐射1573 kWh/m2,最冷月平均温度15 °C。分区结果表明,中国低纬度地区可以沿海岸线明显划分为夏热冬暖新区(夏季建筑必须充分满足防热防雨要求)和极端湿热区(全年建筑需要防热防雨和全遮阳设计)。19个典型城市的建筑能耗模拟结果表明,极端湿热区平均建筑能耗(101.27 kWh·m−2·a−1)显著高于夏热冬暖区(57.07 kWh·m−2·a−1)。此外,能源消耗变化率在气候带边界处达到峰值。这些模拟结果有效地验证了新建筑气候区划的准确性
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引用次数: 0
Domain adaptation-enhanced transfer learning framework for cross-building cooling load forecasting: Case studies in metro stations 跨建筑冷负荷预测的领域适应增强迁移学习框架:以地铁站为例
IF 7.1 2区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Pub Date : 2026-01-23 DOI: 10.1016/j.enbuild.2026.117059
Panlong Liu , Yinghuai Liang , Shuhong Li , Yanjun Li , Wei Sheng
Cooling load forecasting of central air-conditioning systems is a critical prerequisite for improving building energy efficiency and optimizing system control. Although existing data-driven prediction methods do not require complex physical modeling, their performance is still limited by the quality and quantity of historical data. Based on transfer learning, this study proposed a cross-building domain-adaptive cooling load forecasting framework and developed two domain adaptation models for cooling load forecasting: the CORAL-LSTM model and the DANN-LSTM model. These two models are a Long Short-Term Memory (LSTM) model coupled with Correlation Alignment (CORAL) and an LSTM model coupled with Domain Adversarial Neural Networks (DANN), respectively. Through transfer learning, both models integrate domain adaptation enhancement capabilities to address the scarcity of historical data. The models were evaluated using real building data under simulated data scarcity conditions. Experimental results show that in data-scarce scenarios, when the number of source domain samples reaches 4 times or more that of the target domain, compared with traditional LSTM and Gated Recurrent Unit (GRU) models, the overall Performance Improvement Rate (PIR) of the CORAL-LSTM model ranges from 70.8% to 92.62%, and that of the DANN-LSTM model ranges from 23.8% to 68.57%. Meanwhile, the Mean Absolute Percentage Error (MAPE) of the CORAL-LSTM model ranges from 0.99% to 1.15%, and its Coefficient of Determination (R2) ranges from 0.97 to 0.99. Furthermore, this study creatively introduces equivalent parameters to solve the problem of inconsistent feature dimensions when applying transfer learning models to heterogeneous systems. It also uses the Shapley Additive Explanations (SHAP) model to quantify the impact of input features on model outputs, verifying the effectiveness of the equivalent parameters. These findings confirm the feasibility of improving the performance of transfer learning models by enhancing domain adaptation in cooling load forecasting of central air-conditioning systems and provide a new technical approach to addressing data limitations in building energy system modeling.
中央空调系统的冷负荷预测是提高建筑节能和优化系统控制的重要前提。虽然现有的数据驱动预测方法不需要复杂的物理建模,但其性能仍然受到历史数据质量和数量的限制。在迁移学习的基础上,提出了一个跨建筑域自适应冷负荷预测框架,并建立了两种冷负荷预测域自适应模型:CORAL-LSTM模型和DANN-LSTM模型。这两个模型分别是长短期记忆(LSTM)模型与相关对齐(CORAL)模型和长短期记忆(LSTM)模型与领域对抗神经网络(DANN)模型。通过迁移学习,两种模型都集成了领域适应增强功能,以解决历史数据的稀缺性问题。在模拟数据稀缺条件下,使用真实建筑数据对模型进行了评估。实验结果表明,在数据稀缺的场景下,当源域样本数量达到目标域样本数量的4倍以上时,与传统的LSTM和门控循环单元(GRU)模型相比,CORAL-LSTM模型的整体性能提升率(PIR)在70.8% ~ 92.62%之间,DANN-LSTM模型的整体性能提升率(PIR)在23.8% ~ 68.57%之间。同时,CORAL-LSTM模型的平均绝对百分比误差(MAPE)在0.99% ~ 1.15%之间,决定系数(R2)在0.97 ~ 0.99之间。此外,本研究创造性地引入等效参数来解决迁移学习模型应用于异构系统时特征维度不一致的问题。它还使用Shapley加性解释(SHAP)模型来量化输入特征对模型输出的影响,验证等效参数的有效性。这些发现证实了迁移学习模型在中央空调系统冷负荷预测中通过增强域适应来提高性能的可行性,并为解决建筑能源系统建模中的数据限制提供了新的技术途径。
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引用次数: 0
Environment driven consumer psychological behavior based MPC energy model: a multi-dimensional digital twins framework using deep learning 基于环境驱动的消费者心理行为的MPC能量模型:基于深度学习的多维数字孪生框架
IF 7.1 2区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Pub Date : 2026-01-22 DOI: 10.1016/j.enbuild.2026.117035
Bilal Khan , Sahibzada Muhammad Ali , Zahid Ullah
The paper proposes a Model Predictive Control (MPC) energy model for environment-driven Multi-Dimensional Digital Twins (MDDTs) powered by consumer psychological behaviour accomplished via Deep Learning (DL) to minimise energy consumption. This real-time integration of environmental factors, temperature, humidity, and lighting, with consumer behaviour patterns and physiological responses, provides the basis for a new integrated model for the dynamic control of energy systems. The proposed model relies on IoT sensors and real-time data aggregation in making predictions and optimising energy consumption, considering the environmental impacts on consumer comfort. The use of DL models improves MPC by uncovering non-linear correlations in the data and having the ability to predict future energy demands. The MPC architecture operates under a closed-loop operating system and, therefore, enables adjustment of real-time feedback according to the space, environmental, and consumer behaviour changes. Due to its predictive nature, MPC can make anticipatory changes to energy systems, which will save energy without compromising comfort. The proposed model is validated using extensive simulation to respond to dynamic situations with optimal energy consumption while ensuring adequate user comfort. The real-time application of multi-dimensional heterogeneous data proves the applicability and robustness of the proposed system in real-world environments.
本文提出了一个模型预测控制(MPC)能源模型,用于环境驱动的多维数字双胞胎(MDDTs),该模型由消费者心理行为驱动,通过深度学习(DL)实现,以最大限度地减少能源消耗。这种环境因素、温度、湿度和照明与消费者行为模式和生理反应的实时集成,为能源系统动态控制的新集成模型提供了基础。所提出的模型依赖于物联网传感器和实时数据聚合来进行预测和优化能耗,同时考虑到环境对消费者舒适度的影响。DL模型的使用通过揭示数据中的非线性相关性和预测未来能源需求的能力来提高MPC。MPC架构在闭环操作系统下运行,因此可以根据空间、环境和消费者行为的变化进行实时反馈调整。由于其预测性,MPC可以对能源系统进行预期的改变,这将节省能源而不影响舒适性。通过广泛的仿真验证了所提出的模型,以响应具有最佳能耗的动态情况,同时确保足够的用户舒适度。多维异构数据的实时应用证明了该系统在实际环境中的适用性和鲁棒性。
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Energy and Buildings
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