CFD Analysis on Effect of Air Inlet and Outlet Location on Air Distribution and Thermal Comfort in Small Office

Hatif, Ihab Hasan; Hariri, Azian; Idris, A.

doi:10.37934/cfdl.12.3.6677

Cited by 9 publications

(8 citation statements)

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“…The application of computational fluid dynamics (CFD) simulation to study operational and design parameters in cold storage technology has become popular in recent decades [16]. The development of CFD research on cold storage starts with broader research in the field of HVAC (heating, ventilation, and air conditioning) [17] in buildings and the environment to observe cooling performance and thermal comfort [18], one of which begins in the analysis of air distribution in small offices [19]. Several studies about the energy saving of the refrigerated container have been done by considering the effect of the angle [20] and environmental condition [21], the results showed good results compared to the experiment.…”

Section: Introductionsmentioning

confidence: 99%

Analysis of the Effect of Inlet Velocity on Cooling Speed in a Refrigerated Container using CFD simulations

Budiyanto

Suheriyanto

2020

CFDL

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The use of refrigerated containers continues to increase rapidly in line with global trade, this kind of container is commonly used to deliver perishable cargo from producers to consumers over great distances, even between continents. To avoid perishable goods from damages, the temperature inside refrigerated containers was controlled and maintained to keep the cooling performance. The purpose of this study is to investigate the effect of variation inlet velocity on the cooling speed inside a refrigerated container. This study was conducted through a computational fluid dynamic simulation validated with experimental results. The simulation was carried out on the variations of inlet velocity based on low-speed fan mode at 4 m/s equal to 32 circulations/hour, and high-speed fan mode at 10 m/s equal to 80 circulations/hour. The results of the simulation show that the greater the inlet fan speed, the faster the cooling speed. The finding of this study is the cooling speed time of high cube refrigerated container with the low-speed fan is 28 minutes and the high-speed fan is 40 minutes.

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Section: Introductionsmentioning

confidence: 99%

Analysis of the Effect of Inlet Velocity on Cooling Speed in a Refrigerated Container using CFD simulations

Budiyanto

Suheriyanto

2020

CFDL

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“…The study of ventilation in buildings is crucial to improve the quality of the indoor environment [23] and to reduce the total energy consumption of the buildings by 60% [24]. Natural ventilation was acquired using a simple exposure type, transverse and thermal draft.…”

Section: Night Ventilation Methodsmentioning

confidence: 99%

Potential of Natural Ventilation in Different Algerian Climates

Mezouari¹,

Fezzioui²,

Elmir³

et al. 2020

ARFMTS

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This study tested the effectiveness of some natural ventilation basic configurations for the thermal comfort of occupants in different local climates in Algeria. Due to the diverse Algerian climate, the study was performed during the mid-season period that includes three months of May, September, and October and the summer that includes the months of June, July, and August. The ventilation potential of the selected configurations was analysed through numerical simulation by using TRNSYS software coupled with COMIS aeraulic software. The results showed the significant contribution of natural chimney ventilation caused by a stairwell to improve occupant comfort. However; its integration requires a judicious and permanent inspection to control temperature decreases or overheating risks.

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“…Moreover, the studies were only conducted in air conditioned classrooms, and only Wang et al, [9] conducted a study on the effect of air velocity on learning performance. Since one of the important factors influencing thermal comfort is air velocity [10,11], it is possible that it will influence learning performance. Therefore, the influence of air velocity and thermal comfort on learning performance in tropical climates is worth exploring.…”

Section: Introductionmentioning

confidence: 99%

Preliminary Study on Student’s Performance and Thermal Comfort in Classroom

Yao

Azli²,

Hariri³

et al. 2023

ARFMTS

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In Malaysia, students spend up to 33% of their day in classrooms and school buildings. Previous research had shown that thermal comfort conditions in educational buildings can stimulate student productivity. This study aimed to preliminary investigate the relationship between thermal sensation and student performance in the classroom. Data collection was conducted in a selected classroom at a secondary school in Segamat, Johor. All data were collected for three days. Physical measurement data were taken using thermal comfort equipment, KIMO AMI 310 for indoor measurement (air temperature, mean radiant temperature, air velocity, relative humidity), and TSI VelociCalc for outdoor measurement (air temperature, relative humidity). The thermal comfort satisfaction questionnaire was distributed to 36 students in the classroom. The learning performance was assessed through a simple reaction test and digit span test based on the WHO Neurobehavioral Core Test Battery (NCTB) method. The results of the thermal comfort satisfaction questionnaire clearly showed that the lower the fan speed, the more students preferred the cooler option. Furthermore, students performed better when the fan speed was increased. Based on the correlation analysis, it can be concluded that the learning performance and thermal preference vote (TPV) are positively correlated. As a result, students tend to get higher scores when they feel cooler. This study provides important preliminary information on classroom conditions in secondary schools in Malaysia and provides a better understanding of the relationship between thermal perception and student learning performance in the classroom.

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CFD Analysis on Effect of Air Inlet and Outlet Location on Air Distribution and Thermal Comfort in Small Office

Cited by 9 publications

References 0 publications

Analysis of the Effect of Inlet Velocity on Cooling Speed in a Refrigerated Container using CFD simulations

Analysis of the Effect of Inlet Velocity on Cooling Speed in a Refrigerated Container using CFD simulations

Potential of Natural Ventilation in Different Algerian Climates

Preliminary Study on Student’s Performance and Thermal Comfort in Classroom

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