Operating characteristics and evaluation of air source heat pumps in cold regions during heating season in China
August 2025
•Investigated the operation of ASHP in office buildings during heating season.•Discussed the mismatches between heat load and produced.•Evaluate the operating characteristics of the ASHP in the cold...
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Study on the thermal load of building exterior walls with aerogel slurry insulation under microclimate conditions
August 2025
•Preparing different aerogel slurry content-enhanced coral sand concrete materials.•Analyzing new wall materials load under heat island and heat-humidity conditions.•Higher aerogel content increases...
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Heat transfer analysis of deep coaxial geothermal heat exchangers: Insights into heat-flux distribution on borehole wall
August 2025
•A new FV model is proposed for modeling heat transfer of DGHEs.•The homogeneous-medium assumption has limited range of validity.•The heat flux on the borehole wall is a linear function of borehole...
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Experimental study and performance enhancement of micro heat pipe PV/T system
August 2025
•A novel MHP-PV/T system using R141b as the working fluid was proposed.•R141b in improving total efficiency of 11.6 % was verified compared with acetone.•The number of MHPs and flow rate were developed...
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Phase change materials for enhanced photovoltaic panels performance: A comprehensive review and critical analysis
August 2025
•Detailed recent literature review on cooling PV oanels using PCM.•Appropriate classifications and critical analysis related PCM-based cooling systems.•Hydrated salt HS36 and paraffin wax RT42 can highly...
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Geothermal systems classification, coupling, and hybridization: A recent comprehensive review
August 2025
•Geothermal systems classification, coupling, and hybridization.•A recent comprehensive review and critical analysis.•A methodical approach to classifying and evaluating various geothermal concepts.•This...
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Modeling optimal PV surface of BIPVs for maximum energy yield through Genetic Algorithms
August 2025
•Surface geometric modeling and ray tracing were coupled with genetic algorithms.•Historical irradiance data for the city of Medelln, Colombia were used.•An optimal photovoltaic surface was found, which...
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Exploring the role of skin temperature in thermal sensation and thermal comfort: A comprehensive review
August 2025
•Explores local and mean skin temperatures' key roles in human thermal sensation.•Discusses differences in thermal sensation, advocating tailored assessments.•Examines how local skin temperature affects...
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Thermal performances and NOx emission studies on an ammonia-hydrogen fueled double-channel outlet micro-combustor for thermophotovoltaic applications
August 2025
•3D simulation of single inlet and double outlets combustor are conducted.•Thermal performance of a combustor can be improved by blending NH3 with H2.•NOx emissions are also numerically examined.•Exergy...
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Heat supply prediction method of a heat pump system based on timing analysis and a neural network
August 2025
•The ARIMA-BP model had higher prediction accuracy compared to the single model.•The number of training sets at the beginning of the heating season was analyzed.•On-demand heating could be realized...
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Inverse estimation of the release rate of the heated pollutant source with strong convection and its application to the exhaust system design
August 2025
•Inverse estimate the release rate of the heated source with strong convection.•Filter is used to eliminate the fluctuation error of the inverse estimated results.•Using inverse estimation to optimize...
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Using artificial neural networks to predict indoor particulate matter and TVOC concentration in an office building: Model selection and method development
August 2025
•Set up a normalized database for neural network model verification and prediction.•Verify the optimal setting parameters of three neural network models.•Verify the generalization ability of MLNN model...
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Real-time and modelled performance assessment and validation studies of PV modules operating in varied climatic zones
August 2025
•Defects characterization via I-V curves, IR thermography and insulation resistance.•Defect-induced performance degradation of modules.•Correlation between defects and module electrical parameters....
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Performance evaluation of key energy-saving technologies in public institutions based on heat pump system in cold regions
August 2025
•The application effect of key energy-saving technologies were explored.•The characteristics of key energy-saving technologies were deepened.•Advice of system operation optimization was provided by...
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Identifying urban, transportation, and socioeconomic characteristics across US zip codes affecting CO2 emissions: A decision tree analysis
June 2025
•DT technique demonstrates a robust prediction model of CO2 emissions.•DT technique identifies the critical factors and provides an interpretable model.•The multidisciplinary approaches are vital in...
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A multicriteria method to identify and rank IEQ criticalities: Measurements and applications for existing school buildings
June 2025
•A method aimed at identifying and rating IEQ critical aspect is proposed.•The proposed method is designed for existing school buildings.•The method is tested on a sample of university classrooms.•The...
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Balanced operation strategies of district heating systems based on dynamic hydraulic-thermal modeling
June 2025
•The dynamic hydraulic-thermal modeling is conducted.•The heating imbalance of primary side return temperatures is defined.•Particle swarm optimization algorithm is used to optimize valve opening s...
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Breaking barriers: Unearthing the hindrances to embracing energy economics principles in Nigerian building projects
June 2025
•Study reveals barriers to energy economics principles (EEPs) adoption.•Financial constraints, policy gaps and tech limitations emerge prominently.•The study provides guidance to policymakers and industry...
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Overview of the application status and development trends of hydropower and geothermal power in New Zealand
June 2025
•New Zealand is committed to reaching 0 % CO2 emission by 2050.•Hydropower and geothermal power in New Zealand are overviewed.•Hydropower plays a critical and a dominant role in New Zealand.•Various...
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A review of photovoltaic/thermal (PV/T) technology applied in building environment control
June 2025
•Photovoltaic/thermal hybrid solar technology.•Application of PV/T in building environment.•PV/T regulates temperature, humidity, and indoor pollutants....
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Thermal energy storage materials designed from recycled Tetra Pak waste and paraffin waxes with enhanced photothermal conversion efficiencies
June 2025
•A new PCM composite utilizes LDPE/Al part of Tetra Pak waste for thermal storage.•Improved thermal conductivity and photoabsorption of PCM composite by Al in TP waste.•High photothermal conversion...
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Investigation of Theoretical Models, Pumping-Recharge Well Arrangements and System Performance of Abandoned Mine Water Source Heat Pump
June 2025
•Establishing a theoretical model and solution conditions for the aquifer in goaf.•The most reasonable model was selected from 14 well layouts.•A simulation model was developed for heating systems in...
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Experimental study of the effects of siestas on the nocturnal sleep quality and thermal comfort levels under thermoneutral environment in summer
June 2025
•Siestas were found to have influences on the nocturnal sleep quality.•Higher thermal comfort levels were reported in the siesta group.•Siesta group had higher dopamine concentrations compared with...
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Effect of thermal bridges on the energy performance of Chinese residential buildings
June 2025
•Effect of thermal bridges on energy performance of residential buildings was studied.•Thermal bridges have a significant effect on the building energy demand.•A higher insulation level results in an...
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Investigation on inherent angle ventilation control of residential kitchen range hoods
June 2025
•Analysis of the exhaust characteristics of side-suction range hoods.•Analyzing the effects of different operations on pollutant capture efficiency.•Implement targeted control strategies in different...
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