A numerical study on the characteristics of flow field, temperature and concentration distribution according to changing the shape of separation plate of kitchen hood system

Lim, Kyoung-Bin; Lee, Changhee

doi:10.1016/j.enbuild.2007.02.028

Cited by 79 publications

(27 citation statements)

References 4 publications

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“…The mathematical expressions of the conservation laws describing the fluid flow and heat transfer problems are known as the governing equations. Under the above assumptions, the governing equation can be written as [4][5][6][7][8]:…”

Section: B Governing Equationmentioning

confidence: 99%

Three-Dimension Numerical Simulation of Temperature Field and Flow Field in Tunnel

Fan

Zhao

2012

2012 2nd International Conference on Remote Sensing, Environment and Transportation Engineering

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In order to investigate the temperature field and flow field distributions in tunnel, a tunnel physical model containing an inner heat source was established by using computational fluid dynamics CFD simulation software Fluent 6.3. The finite volume method and SIMPLE algorithm were adopted to disperse and solve the governing equation. The simulations of the temperature field and flow field were carried out when the boundary temperature of the inner heat source was at 320K and the ventilation velocity was 1m/s. The results show that there are temperature gradients along the longitudinal plane and the cross-sectional plane because hot air rises and cold air falls under the combined influence of the vents and the inner heat source.

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Section: B Governing Equationmentioning

confidence: 99%

Three-Dimension Numerical Simulation of Temperature Field and Flow Field in Tunnel

Fan

Zhao

2012

2012 2nd International Conference on Remote Sensing, Environment and Transportation Engineering

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“…Working on the theory that the odour removal from a point close to its source would be the most efficient approach, and that the kitchen is a dominant pollutant source at cooking time, many researchers focused on kitchen hoods to reduce pollutant spread [7,[16][17][18][19].…”

Section: Researches For Odour Spread In Residential Buildingsmentioning

confidence: 99%

Ventilation Systems to Prevent Food Odour Spread in High-rise Residential Buildings

Kim

Park

Cheong

2011

Indoor and Built Environment

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In the recent years, the spread of food odour in highrise residential buildings has become a serious factor in indoor air quality problems in Korea. This study examined the use of ventilation systems to reduce the transmission of odour in the high rise buildings. The spread of food odour in an existing residential building was analysed by measurement and computational fluid dynamics (CFD) simulation. Although the kitchen exhaust system was used during cooking, the food odour level was ''strong'' in the kitchen and in the living room, and its spread caused the most serious problems at mealtimes. The existing system needed modification to reduce the food odour spread. The ventilation system in the kitchen was improved by increasing the volume of air exhausted through the ceiling, by changing the supply inlet's angle of incidence, and by fitting a stronger exhaust system with the ability to decrease the food odour level in a shorter time. During development, system performances were analysed using a CFD simulation method. The food odour level was shown to have decreased greatly by the use of the modified kitchen exhaust system, which reduced the food odour to below the ''weak'' level in 30 min.

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“…The simulated results agreed reasonably well with the measured concentration. Lim and Lee [26] investigated the flow characteristic of a kitchen hood system and how to improve the system to expel pollutants more efficiently. Compared to the initial model (having no separation plate), the system was 1.4-1.9% more efficient in terms of temperature distribution and 9.4-11.9% more efficient in terms of CO 2 concentration distribution.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Indoor CO₂ Concentration Distribution in an Apartment

Zhou

Kim

2010

Indoor and Built Environment

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In a residential kitchen, a number of pollutants are generated due to cooking and are released into the ambient air; these can significantly affect the indoor air quality of residential environment. The purpose of this study was to investigate the indoor environmental conditions via the velocity field, temperature field and CO 2 concentration distribution during cooking in a kitchen in a typical Korean apartment. Numerical simulations were conducted using the computational fluid dynamics software FLUENT 6.3 for solving the continuity, momentum, energy and concentration equations in an unsteady state with the standard k-" turbulence model. The parameters used for the simulations included: (1) the extraction flow rate of the range hood (0, 500, 750 and 1000 m 3 Áh À1 ) and (2) the angle between the inlet airflow and the ceiling (908, 458 and 22.58). The findings illustrated that the temperature and CO 2 concentration distribution could be greatly influenced by the extraction flow rate of the range hood.Also, by reducing the angle between the airflow and ceiling, the area-averaged temperature could be reduced in the breathing plane of the kitchen. The findings of this research could contribute to the reduction of energy consumption and the adverse effects caused by cooking.

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A numerical study on the characteristics of flow field, temperature and concentration distribution according to changing the shape of separation plate of kitchen hood system

Cited by 79 publications

References 4 publications

Three-Dimension Numerical Simulation of Temperature Field and Flow Field in Tunnel

Three-Dimension Numerical Simulation of Temperature Field and Flow Field in Tunnel

Ventilation Systems to Prevent Food Odour Spread in High-rise Residential Buildings

Numerical Investigation of Indoor CO₂ Concentration Distribution in an Apartment

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A numerical study on the characteristics of flow field, temperature and concentration distribution according to changing the shape of separation plate of kitchen hood system

Cited by 79 publications

References 4 publications

Three-Dimension Numerical Simulation of Temperature Field and Flow Field in Tunnel

Three-Dimension Numerical Simulation of Temperature Field and Flow Field in Tunnel

Ventilation Systems to Prevent Food Odour Spread in High-rise Residential Buildings

Numerical Investigation of Indoor CO2 Concentration Distribution in an Apartment

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Product

Resources

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Numerical Investigation of Indoor CO₂ Concentration Distribution in an Apartment