Experimental and numerical analysis of temperature and air flow in the classroom using CFD

Jagadeesh, L.R.; Mahesh, L.

doi:10.1016/j.matpr.2020.11.969

Cited by 2 publications

(3 citation statements)

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“…Such ventilation ensures a better IAQ and reduces energy consumption by up to 30%. Jagadeesh et al [140] analyzed the indoor temperature and airflow in the classroom using CFD and scaled-down experiments. The results illustrated that providing proper additional ventilation in the classroom enhances the natural circulation of air and reduces room temperature by 4 • C to 5 • C, achieving the goal of energy saving in fans [140].…”

Section: Mechanical Ventilation (Mv)mentioning

confidence: 99%

“…Jagadeesh et al [140] analyzed the indoor temperature and airflow in the classroom using CFD and scaled-down experiments. The results illustrated that providing proper additional ventilation in the classroom enhances the natural circulation of air and reduces room temperature by 4 • C to 5 • C, achieving the goal of energy saving in fans [140]. Using the mixed operation mode combing the MV and NV can improve the comfort and energy performance at the same time.…”

Section: Mechanical Ventilation (Mv)mentioning

confidence: 99%

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Interaction between Thermal Comfort, Indoor Air Quality and Ventilation Energy Consumption of Educational Buildings: A Comprehensive Review

Jia¹,

Han²,

Chen

et al. 2021

Buildings

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Thermal comfort and indoor air quality (IAQ) of educational buildings can affect students’ academic performance and well-being and are closely related to ventilation energy consumption. Demands of the indoor environmental quality within the classroom generally vary with the education levels and result in ventilation energy consumption accounting for a considerable proportion of the total energy use in bulk educational buildings. Its huge energy-saving potential is attracting worldwide attention from scholars and governments. Therefore, appropriate operation strategies of ventilation systems should be adopted to effectively reduce energy consumption without sacrificing thermal comfort and IAQ. However, the absence of relevant standards and guidelines for designing a quality classroom environment considering the special features of educational buildings remains an important research question. This study conducts a comprehensive review to determine research gaps and identify future directions for the interaction between thermal comfort, IAQ and ventilation energy consumption for educational buildings. The review results show that: (1) The thermal comfort prediction model should consider the influences of genders, ages and socioeconomic backgrounds; (2) The mixed-mode ventilation coupling the natural and mechanical approaches is preferred given its advantage of lower energy consumption and improved thermal comfort, but its control strategies need further exploration; (3) Optimizing passive design parameters of buildings (e.g., window to wall ratios, window orientations and sun shading installations) can significantly reduce the ventilation demands while maintaining indoor thermal comfort; (4) More studies are required for investigating thermal comfort in educational buildings during the heating period; and (5) IAQ of university buildings clearly requires further studies, especially on bacterial and fungal aerosol pollutants, for a more comprehensive assessment of the built environment.

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Section: Mechanical Ventilation (Mv)mentioning

confidence: 99%

Section: Mechanical Ventilation (Mv)mentioning

confidence: 99%

Interaction between Thermal Comfort, Indoor Air Quality and Ventilation Energy Consumption of Educational Buildings: A Comprehensive Review

Jia¹,

Han²,

Chen

et al. 2021

Buildings

View full text Add to dashboard Cite

show abstract

“…Wan et al [28] discussed the influence on ventilation performance of human factors caused by the supply vane angle and supply air temperature. Jagadeesh et al [29] used CFD as a stimulus of the existing ventilation, no ventilation, and additional ventilation in the classroom and the results when compared with experimental data showed that the room temperature would be at a comfortable level with the provision of additional vents in the classroom. To sum up, it is of great significance to optimize the air-conditioning system design to improve the energy efficiency while ensuring thermal comfort.…”

Section: Introductionmentioning

confidence: 99%

Case Study: Impacts of Air-Conditioner Air Supply Strategy on Thermal Environment and Energy Consumption in Offices Using BES–CFD Co-Simulation

Wang

Gao

et al. 2023

Sensors

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Due to energy constraints and people’s increasing requirements for indoor thermal comfort, improving energy efficiency while ensuring thermal comfort has become the focus of research in the design and operation of HVAC systems. This study took office rooms with few people occupying them in Wuhan as the research object. The EnergyPlus-Fluent co-simulation method was used to study the impact of 12 forms of air distribution on the thermal environment and air-conditioner energy consumption. The results indicate that 3 m/s supply air velocity and 45° supply air angle are more suitable for the case model in this study. The EnergyPlus-Fluent co-simulation method used in this paper provides a reference for the study of indoor environments in offices with few people occupying them.

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Experimental and numerical analysis of temperature and air flow in the classroom using CFD

Cited by 2 publications

References 1 publication

Interaction between Thermal Comfort, Indoor Air Quality and Ventilation Energy Consumption of Educational Buildings: A Comprehensive Review

Interaction between Thermal Comfort, Indoor Air Quality and Ventilation Energy Consumption of Educational Buildings: A Comprehensive Review

Case Study: Impacts of Air-Conditioner Air Supply Strategy on Thermal Environment and Energy Consumption in Offices Using BES–CFD Co-Simulation

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