The assessment of personal exposure in restaurants considering heat sources and ventilation strategies
October 2024
•Different heat source conditions in different restaurants are considered.•The hotter the heat source, the greater the expiratory jet's upward trend.•Low-temperature heat sources lead to an increased...
Share article
Utilizing agro-industrial wastes panels in developing cost-efficient thermally insulating wall claddings for residential energy retrofitting in Egypt
October 2024
•Thermal conductivity range of egyptian flax shive particleboards 0.0912–0.1074 W/mK.•Thermal conductivity range of sugarcane bagasse particleboards 0.050–0.1166 W/mK.•Flax shive interior cladding-based...
Share article
Experimental evaluation of a “U” type earth-to-air heat exchanger planned for narrow installation space in warm climatic conditions
October 2024
•Evaluation of novel disposal of EAHE adjusts to the housing minimum space demands.•The difference in air temperature reached in the EAHE ranges from 5 °C to 10 °C.•The soil temperature is measured...
Share article
Estimating cooling loads of Indian residences using building geometry data and multiple linear regression
October 2024
•Simulation approach to assess the role of four geometry variables on cooling loads.•Exposed Surface Area and floor plate layout are crucial in cooling load reduction.•Changes in building geometry can...
Share article
Digital twin technology for thermal comfort and energy efficiency in buildings: A state-of-the-art and future directions
October 2024
•Review of the use of DT for thermal comfort (TC) & energy consumption in buildings.•Technologies were examined in creating DT for TC & energy optimization.•Prediction of energy consumption using ANN,...
Share article
Thermal energy performance of compressed earth building in two different cities in Moroccan semi-arid climate
October 2024
•Good agreement between the energy model and the monitored indoor temperatures.•The passive techniques with earth blocks provide better energy efficiency.•The summer discomfort is reduced about 12%...
Share article
Off-design condition optimization of organic Rankine cycle based on genetic algorithm
October 2024
•The optimal method of ORC system under off-design conditions is studied.•The off-design operation model of ORC system with preheater is established.•A genetic algorithm is proposed to optimize net...
Share article
Investigation of a falling film tube bank heat exchanger with baffle design for water recovery applications
October 2024
•Integrating falling film thermosyphons into a heat exchanger with baffle design.•Explore and develop a numerical method to predict the heat and mass performance.•Optimize the bank configuration to...
Share article
Energy characterization of forced ventilated Photovoltaic-DSF system in hot summer of composite climate
October 2024
•Summer performance of a forced ventilated PV-DSF system is assessed.•PV panel transparency, air cavity and velocity are selected as design parameters.•Mathematical correlations are developed for energy...
Share article
Effects of increasing the degree of building height asymmetry on ventilation and pollutant dispersion within street canyons
October 2024
•We studied the effect of increasing the DBHA in street canyons.•Increasing the DBHA of the canyon can significantly improve the ventilation.•Therefore, the pollutant concentration in the pedestrian...
Share article
Analysing light pipe two-side aperture in dense population housing to improve the visual and thermal condition
October 2024
•The top daylight system in urban densely populated Kampung Kota was tested.•Six room configurations with different size spaces and materials were evaluated.•Housing with light pipe two-side aperture...
Share article
Experimental study on the operating performance of the air source heat pump (ASHP) with variable outdoor airflow rate under the standard frosting condition
October 2024
•A laboratory test was conducted based on an ASHP at standard frosting condition.•Four test cases were organized for the unit with different outdoor fan airflow rate.•The decrease of airflow led to...
Share article
System integration analysis of a zeolite 13x thermal energy storage
August 2024
•A numerical model of a TES has been validated against experimental data.•Performance depends on regeneration temperature, which should be higher than 150 ∘C.•Heat storage capacity strongly decreases...
Share article
Numerical study on critical flow velocity of ice slurry in the pipe of ice source heat pump system
August 2024
•A novel ice source heat pump system was proposed.•The flow characteristics of ice slurry in the ice outlet pipeline were simulated.•Two kinds of critical flow velocity of ice slurry were determined.•The...
Share article
Experimental investigations on the thermal efficiency of a solar air collector with transverse rectangular baffles inclined by an angle of 135°
August 2024
•The experiment tries to increase a solar collector's efficiency by using baffles.•The cases studied were as follows: five cases, and a smooth plate.•Found that the number of baffles and their positioning...
Share article
The mathematical model of kitchen smoke exhaust system in high-rise residential buildings considering the Influence of Stack effect
August 2024
•Developed mathematical model for kitchen exhaust system.•Model accuracy improved for different opening rates.•Thermal pressure affects kitchen exhaust in high-rise buildings during winter....
Share article
Investigation of tungsten halogen lamp for possible usage as heat source for testing solar collector
August 2024
•The tungsten halogen lamp was proposed as heat source for testing solar collector.•EN-12975–2 Standard was used to control the quality of heat source.•The average light intensity (Iavg) decreased as...
Share article
Influencing assessment of different heating modes on thermal comfort in electric vehicle cabin
August 2024
•Overall thermal sensation vote is quantitatively investigated in a vehicle cabin.•Local TSV is measured to investigate the performance of PCS.•The adaptability of PMV, SET* and operative temperature...
Share article
Characteristics of office lighting energy consumption and its impact on air conditioning energy consumption
August 2024
•The theoretical model calculation process is established.•Curve fitting of radiant heat gain and illuminance.•The evaluation method of air conditioning energy consumption is given.•The thermo-optical...
Share article
Global hydraulic stability analysis for dynamic regulation in multi-zone variable air volume air-conditioning system
August 2024
•The concept of global hydraulic stability of VAV systems is proposed.•Impact factors of the global hydraulic stability of VAV systems are analyzed.•The global hydraulic stability of DP strategy and...
Share article
Evaluation of suitability of university ladder classroom environment on humans
August 2024
•The weak links of human-environment interaction in ladder classrooms were worked.•The relationship among humans and the environment was studied by the evaluation.•Advice of indoor environment improvement...
Share article
Ambient formaldehyde concentrations in summer in 30 Chinese cities and impacts on air cleaning of built environment
August 2024
•Ambient HCHO was studied in 30 Chinese cities.•A mail-based sampling device was developed.•Peak hours of 12pm-3pm were identified.•Median concentration in summer peak hour was 0.027 mg/m3.•Ambient...
Share article
A review on capacity sizing and operation strategy of grid-connected photovoltaic battery systems
August 2024
•An overview of PVB system study methods is concluded.•Commonly used PVB system study software are listed and compared.•The PVB system feasibility and size and strategy optimization studies are reviewed.•Tariff...
Share article
Thermoacoustic heat pump utilizing medium/low-grade heat sources for domestic building heating
August 2024
•A heat-driven thermoacoustic heat pump is simulated based on time-domain model.•Minimalist system structure is applied with improved acoustic matching.•Heating power of 5.7 kW with COPh of 1.4 is obtained...
Share article
Impact of COVID-19 on the energy consumption of commercial buildings: A case study in Singapore
June 2024
•The mean energy use intensity decreased by 56.77 kWh/m², a plummet of 19.9%;•The impact on commercial buildings is: mixed development>retail>office>hotel;•Influential factors of energy consumption...
Share article