Surrogate modeling for long-term and high-resolution prediction of building thermal load with a metric-optimized KNN algorithm
December 2023
•Surrogate modeling, to predict all-year hourly building loads in pre-design stage.•Load database contains 16,384 models with crucial features and thermal load data.•Manhattan distance is the optimal...
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Overview of the development and application of wind energy in New Zealand
December 2023
•New Zealand is aimed to achieving 100% renewable energy production by 2035.•New Zealand is dedicated to achieve 0% CO2 emissions by 2050.•Richful wind energy in New Zeland has great potential to be...
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Prediction model of air infiltration in single-zone buildings with high airtightness
December 2023
•Air leakage paths are assumed to be uniformly and continuously distributed.•Airflow rate was integrated in the vertical and horizontal planes.•Prediction model has been verified by an ultra-low energy...
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Pyrolysis, combustion, and fire spread characteristics of the railway train carriages: A review of development
December 2023
•The research on fire characteristics of railway trains is reviewed.•The pyrolysis is a prerequisite and basis for the combustion of train materials.•The heat release rate value varies greatly among...
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A prediction model to forecast passenger flow based on flight arrangement in airport terminals
December 2023
•A prediction model of passenger flow based on flight arrangement is established.•Flight schedule is the key parameter affecting the terminal occupant number.•Peak occupant number is lower than the...
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Modelling method for air-conditioning usage behavior in multi-occupant office space based on group decision-making strategy
December 2023
•Proposed a new method for AC usage behavior modelling in multi-occupant office.•Used IF preference relationship to describe individual behavior intention.•Used hierarchical structures to reflect social...
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Strategic potential of multi-energy system towards carbon neutrality: A forward-looking overview
December 2023
•General overview on zero-carbon multi-energy system (ZCMES) was presented.•Various ZCMES configurations and structures were discussed.•Notable challenges and research contributions on ZCMES feasibility...
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Performance of a collector-storage solar air heating system for building mechanical ventilation preheating in the cold area
December 2023
•The performance of the CSSAHS was studied by experiments.•The matching rule in different urban environments was studied.•The ESR of CSSAHS and the HSR of the TSU in cold area were studied....
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Thermal sensation and percentage of dissatisfied in thermal environments with positive and negative vertical air temperature differences
December 2023
•Human thermal comfort with positive and negative ΔTd was experimentally investigated.•The upper body parts are more thermally sensitive to ΔTd than the lower body parts.•The acceptable ΔTd range is...
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Elastic energy storage technology using spiral spring devices and its applications: A review
December 2023
•Elastic energy storage technology has particular advantages.•Elastic energy storage technology balances supply and demand of energy.•Spiral spring energy storage provides strong moment impact and rapid...
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Evaluation of airborne transmission risk in university towns based on IEQ surveys
October 2023
•Airborne transmission risk in university town during the pandemic is evaluated.•A 3-level evaluation method of transmission risk based on CO2 level is developed.•High CO2 concentration and transmission...
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Adaptive thermal comfort in naturally ventilated hostels of warm and humid climatic region, Tiruchirappalli, India
October 2023
•Comfort range for hostel building was found between 26.1 and 32.8 °C.•The desired temperature was found to be 27.8 °C, while neutral temperature was 29.5 °C.•The comfort limit extended by 2.8 °C if...
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The effect of noise barriers on viaducts on pollutant dispersion in complex street canyons
October 2023
•The viaduct-noise barrier can remarkably influence the flow structure.•Using field synergy theory to analyze noise barrier-viaduct system.•Noise barrier-viaduct reduced the CO concentration in pedestrian...
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The thermal analysis of the heat dissipation system of the charging module integrated with ultra-thin heat pipes
October 2023
•A hybrid heat dissipation system of charging module is performed.•An application of ultra-thin heat pipes (UTHPs) in charging module.•Effects of heat dissipation factors are compared quantitatively.•The...
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Design of a stearic acid/boron nitride/expanded graphite multifiller synergistic composite phase change material for thermal energy storage
October 2023
•Stearic acid was encapsulated by various fillers.•A shape-stabilized composite phase change material was prepared.•Thermal and cycling stability of the prepared composite are excellent.•Thermal conductivity...
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Hourly energy consumption characteristics of metro rail transit: Train traction versus station operation
October 2023
The electricity consumption of the urban metro system can be mainly divided into the following two categories: the electricity consumption for train traction (Et) and the electricity consumption for...
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Field measurement of the impact of natural ventilation and portable air cleaners on indoor air quality in three occupant states
October 2023
•Ventilation strategies are proposed in the state of unoccupied, sleep and leisure.•A strategy of natural ventilation combined with portable air cleaners is proposed.•The exterior window should not...
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Impact of indoor heat load and natural ventilation on thermal comfort of radiant cooling system: An experimental study
October 2023
•Radiant cooling integrated with a low embodied energy affordable building is analyzed.•Fanger's and Adaptive thermal comfort models are adopted for this study.•Natural ventilation lowers CO2 levels...
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Carbon emission reduction analysis of CHP system driven by biogas based on emission factors
October 2023
•The cogeneration system from carbon neutral is established in rural China.•Dynamic equilibrium relationship between users and energy output is explored.•A model of environmental benefit index for proposed...
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Daily and annual performance analyses of the BIPV/T system in typical cities of Sudan
October 2023
•A mathematical model of the BIPV/T system is established.•The energy-saving potential of the system for different regions of Sudan is analyzed.•Wadi Halfa has the highest total annual electrical power...
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Heating properties of bridge decks using hydronic heating systems with internal or external circulation tubes
August 2023
•Heating properties of bridge deck with external or internal hydronic heating systems.•The thermal efficiencies of the external and internal heating systems.•Thermally induced stress of the bridge deck...
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Study on the conversion coefficient between ACH50 and ACH in typical zones of public buildings
August 2023
•Analyzed the conversion coefficient (CC) between ACH50 and ACH of public buildings.•CC is strongly affected by meteorological conditions and varies in a wide range.•Recommended value of CC was given,...
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Generating hourly electricity demand data for large-scale single-family buildings by a decomposition-recombination method
August 2023
•Statistical features were extracted from decomposed time series data.•A decomposition-recombination method was developed to generate energy demand data.•Day-and-hour factors were analyzed to improve...
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Experimental study on the influence of temperature and humidity on the thermal conductivity of building insulation materials
August 2023
•Climate chamber method was used to reflect the real moisture state of material.•Transient method has short time and high precision for moist materials.•The experimental results can provide reference...
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Thermal comfort of Frail People under dynamic and non-uniform thermal environments using a thermal manikin with thermoregulatory control: An experimental study
August 2023
•Thermal responses of frail people under non-uniform conditions were analyzed.•Thermal responses of frail people under dynamic environments were studied.•The optimal comfort temperature range of frail...
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