Recent Articles

Open access

ISSN: 2666-1233

Balanced operation strategies of district heating systems based on dynamic hydraulic-thermal modeling

•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...

Breaking barriers: Unearthing the hindrances to embracing energy economics principles in Nigerian building projects

•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...

Overview of the application status and development trends of hydropower and geothermal power in New Zealand

•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...

A review of photovoltaic/thermal (PV/T) technology applied in building environment control

•Photovoltaic/thermal hybrid solar technology.•Application of PV/T in building environment.•PV/T regulates temperature, humidity, and indoor pollutants....

Thermal energy storage materials designed from recycled Tetra Pak waste and paraffin waxes with enhanced photothermal conversion efficiencies

•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...

Investigation of Theoretical Models, Pumping-Recharge Well Arrangements and System Performance of Abandoned Mine Water Source Heat Pump

•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...

Experimental study of the effects of siestas on the nocturnal sleep quality and thermal comfort levels under thermoneutral environment in summer

•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...

Effect of thermal bridges on the energy performance of Chinese residential buildings

•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...

Investigation on inherent angle ventilation control of residential kitchen range hoods

•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...

Molecular dynamics simulation of temperature and concentration distribution at liquid-gas interface during liquid air storage process

•The microscopic phenomenon of liquid air evaporation during storage is studied.•The temperature and concentration distribution of liquid air interface is disclosed.•The effect of heat flux on the transport...

Infectious diseases prevention and control with reduced energy consumption in an airport

•Energy consumption can be reduced by 60 %-79 % considering dynamic passenger flow.•Level of pandemic prevention and control is proportional to personnel density.•Closing dining area during the pandemic...

Review on operation control of cold thermal energy storage in cooling systems

•Component, applications, and operation control of CTES system are reviewed.•Cold storage medium is a key factor to improve the CTES system performance.•Introducing passive and active cooling systems...

Fundamental design parameters causing ventilation inequality in dormitory complexes: A numerical and field study

•This study analyzes how building height and layout affect ventilation equity.•CFD simulations and field wind measurements assess indoor-outdoor ventilation.•Bayesian-optimized XGBoost and SHAP identify...

Solar regeneration in desiccant dehumidifier under variable flow & rotational conditions

•Regeneration air for dehumidifier is heated using a parabolic solar collector.•Regeneration rises from 8 to 24 rpm of wheel rpm, & beyond this performance declines.•CO₂, TVOCs, and HCHO rise with regeneration...

Experimental study on phase change materials aided pipe-embedded wall for energy efficiency in buildings

•Novel PCW system with PCMs improves building energy efficiency.•Achieves high energy savings using low-grade heat and cooling sources.•Experiments show enhanced comfort and thermal stability in varied...

A novel air-cooled based desuperheating approach for maximizing sustainable energy generation potential from ultra-low grade waste heat – energy, exergy and environmental (3E) evaluation

•An air-cooled desuperheating system is proposed for waste heat recovery below 85 °C.•System performance is analyzed using energy, exergy, and environmental (3E) metrics.•R410a-R141b is identified as...

Energy-exergy-carbon flow coupling analysis and optimal scheduling of a solar-air source heat pump heating system on campus

•Exergy was considered to reflect energy quality differences in carbon emission analysis.•Energy-exergy-carbon flow coupling analysis was conducted to reveal dynamic carbon emission traits.•An optimized...

Application of Subtle Expression Recognition in Evaluating Odor Environment Comfort

•Facial subtle expressions are used to assess odor environmental comfort.•Recognition accuracy for pleasant odors is higher than for unpleasant ones.•A stronger liking or disliking of the odor correlates...

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