Recent Articles

Open access

ISSN: 2666-1233

A study on the applicability of PV/T-EAHE in different regions based on machine learning prediction algorithms

•Establish an XGBoost model to evaluate PVT/EAHE thermoelectric performance.•In the selected regions, annual overheating discomfort hours reduce by 61.5%-100%.•In the selected regions, total annual...

Quantifying the Comfort Cost of Clothing Adjustment in Building Operation: A Causal Inference Study

•Quantifies the comfort cost of clothing adjustment using causal machine learning.•A 1-clo increase reduces comfort probability by about 4 percentage points.•The comfort cost is larger in naturally...

Embodied and Operational Carbon Assessment of Magnesium-Modified Earthen Bricks for Rural Residential Buildings in Cold Regions of China

•Optimized M-ME (YC2) reaches 12.5 MPa and 0.371 W/(m·K), exceeding standards;•M-ME embodied carbon is 120.07 kg CO₂-Eq/t, 63.19% of FCB and 70.63% of CCB;•M-ME saves 1085 kWh/a than FCB prototype and...

Hydrogel-based thermal regulation strategies for passive cooling: A review

•Overview on recent literature of hydrogel-based passive cooling technologies;•Appropriate classification through different thermal regulation strategies;•Cooling performance assessment among passive...

Development of a novel biomass-wind energy system for clean hydrogen production along with other useful products for a residential community

•A novel integrated biomass-wind energy system is developed for buildings.•The system is evaluated through energy and exergy analyses.•Both economic study and environmental impact assessment are performed.•The...

Power consumption prediction in warehouses using variational autoencoders and tree-based regression models

•A novel deep learning and tree-based hybrid model for warehouse power prediction.•Variational Autoencoders for dimensionality reduction and latent feature extraction.•ExtraTree model achieving peak...

Experimental investigation for enhancement of heat transfer and friction factor through using V-pattern ribs along with semi-circular perforated manner

•V-pattern ribs with semi-circular perforations were used to enhance heat transfer.•Nusselt number (Nu) and friction factor (f) showed significant improvement.•Nu increased by 11.44 %, and f decreased...

A simulation study on the indoor thermal environment of an office building with transparent radiative cooling (T‐RC) film in Nanjing, China

•The impact of T-RC film on indoor thermal environment is studied by CFD simulation.•The window-to-wall ratio (WWR) and orientation of the windows are considered.•The best cooling effect of the T-RC...

The current status of PM2.5 in kitchens of severe cold regions and its impact on health and economy: A case study of Liaoning province

•Large-scale field tests on the kitchens were carried out in severely cold regions.•The variation law of the PM2.5 concentration in kitchens has been explored.•The impact of indoor PM2.5 on premature...

A quantitative comparison of different methods for air conditioning energy consumption prediction in residential buildings

•Two methods for AC energy consumption prediction were quantitatively compared.•Measured AC energy consumption was 2.62kWh/d for cooling and 0.47kWh/d for heating.•Values by top-down decomposition method...

Effects of medium-to-long-term exposure to aromatic environment on subjective perception

•Perception of aromatic environment follows the principle of olfactory adaptation.•Frequency of intermittent stimuli determines whether adaptation or recovery occurs.•Olfactory comfort and perceived...

Self-powered and self-feedback wind energy harvester for intelligent metro air conditioning

•A wind energy harvesting sensor applied to underground air outlets is proposed.•The wind energy harvesting sensor involves four modules for energy efficiency.•The device generates up to 0.708W of power...

Comparison of PV and PV/T systems in different regions of China: Energy gain, energy cost, energy payback and energy return

•Mathematical models for PV system and water-cooled PV/T system are established.•Five representative cities in various climatic zones of China are involved.•Annual energy gains of the two systems in...

Guidelines for predicting airtightness in residential buildings under climatic pressure conditions

•New airtightness prediction method generalized for actual climatic conditions.•A minimum pressure difference of 20 Pa is required to utilize the method.•The acceptable condition for applying this method...

On-site experimental analysis of the impact of subway trains passing on the ventilation performance of exhaust system

•Air velocities are tested on proposed systems in a typical subway station.•The effectiveness of two proposed systems is analyzed with/without train passage.•Air velocities at escalators exhibit a three-stage...

Enhancing energy efficiency in shipping container house: A novel approach using hybrid louver systems

•Optimized surrounding shades can improve energy savings and visual comfort.•Prefabricated buildings are specifically suitable for warm climate zones.•Proposed hybrid shadings achieved a higher reduction...

Energy consumption characteristics and evaluation of public buildings in Tianjin, China

•The energy consumption characteristics of typical public buildings is analyzed.•The energy consumption level of different types of public buildings are compared.•The energy-saving measures of public...

Unsupervised anomaly detection of industrial building energy consumption

•Missing values are reconstructed using a transformer-based model.•An ensemble framework is developed to identify subsequence anomalies.•The detection ratios for the two buildings are 9.5% and 5.8%,...

Deciphering domestic energy demand through household electricity and gas consumption

•Clustered energy usage patterns using 15-min smart meter data from 15,000 homes.•Identified peak electricity use in summer evenings and gas use in winter mornings.•Developed predictive models with...

Comparative study on aerosol fate of mixed ventilation and attachment ventilation in a dental clinic

•Attachment ventilation in dental clinics is compared to mixed ventilation.•An upper outlet in attachment ventilation removes aerosols more effectively.•The optimal ACH for aerosol attenuation in dental...

The Role of Campus Buildings in Energy Conservation and Carbon Reduction of China: A Case Study Based on Hybrid Data-Driven Modeling

•Conducted a field study at a school building in Beijing, China.•Developed a hybrid energy prediction model based on multi-source data.•Implemented a MOO approach based on SPEA2 to optimize energy use.•Conducted...

Energy-Saving Potential of Embedded Pipe Roof with Phase Change Material: Experimental, Numerical Analysis, and Optimization

•Integrated roof system enables active solar heating and passive insulation.•It provides 6-hour insulation, then cuts heat flux loss by 57.48% for over 5 hours.•A resistance-capacitance model accurately...

LLM-Powered Agent for Occupant-Centric Indoor Environment Control: Design, Implementation, and Evaluation

•Develops an LLM-based occupant-centric indoor environment control system•Enables scalable integration with all Home Assistant–connected devices•Proposes a framework combining objective and subjective...

Optimal sampling period for model predictive control of building heating systems

•A simulation framework is developed to select MPC sampling period for heating.•Optimal MPC sampling period reduces indoor temperature MAE by up to 62%.•Sampling period ranges provided for various thermal...

Hygrothermal and energy performance analysis of wall cladding systems with varying surface reflectivity under three Canadian climate conditions

•Cladding reflectivity affects moisture and energy across climates.•Higher reflectivity lowers cooling but slightly raises heating demand.•Mould risk rises with reflectivity in Montreal and Toronto.•In...

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