Heat transfer characteristics in air-conditioned rooms using mixing air-distribution system under mixed convection conditions

Al-Sanea, Sami A.; Zedan, M. F.; Al-Harbi, Mansour

doi:10.1016/j.ijthermalsci.2012.04.023

Cited by 20 publications

(4 citation statements)

References 23 publications

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“…linear eddy-viscosity turbulence model [31,[39][40][41][42][43][44][45][46], second-order Reynolds stress model (RSM) [40,[45][46][47][48][49][50][51][52][53] or LES [30,44,[54][55][56][57][58][59][60], wall treatment; i. e. low-Reynolds number modelling (LRNM) or two layers model [40,56,[61][62][63], and inlet conditions; i.e. inlet air speed [57,[64][65][66][67][68], inlet air temperature [30,[47][48][49]64,66,68] and inlet turbulence quantities [41,43,62,67,…”

Section: Introductionmentioning

confidence: 99%

Influence of inlet boundary conditions on 3D steady RANS simulations of non-isothermal mechanical ventilation in a generic closure

Kang

Hooff

2022

International Journal of Thermal Sciences

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Section: Introductionmentioning

confidence: 99%

Influence of inlet boundary conditions on 3D steady RANS simulations of non-isothermal mechanical ventilation in a generic closure

Kang

Hooff

2022

International Journal of Thermal Sciences

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“…The simulation with the Reynolds stress model took longer than the k-ɛ model, but the mesh spacing independency seemed to be more significant. Al-Sanea, Zedan [12] studied air flow and thermal characteristics in air-conditioned rooms under conditions of turbulent mixed convection. Air velocity and temperature distributions were determined by a CFD model and compared with experimental work.…”

Section: Introductionmentioning

confidence: 99%

Comparison of numerical simulation and experimental study on indoor air quality of air-conditioned office building in desert climate

Wahhad¹,

Adam

Sapuan

2015

Int. J. Automot. Mech. Eng.

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This paper is a study of the air temperature distribution of an air-conditioned office room equipped with a double-glazed window in a desert climate. The study includes both experimental and theoretical works using a computational fluid dynamics (CFD) simulation program. The experimental results were compared with the CFD program results. The commercial computational fluid dynamics ANSYS CFD V.13.0, solver FLUENT software, and three-dimensional flow finite difference of k-ε for analysis and validation experimental work were used. The main objective of the study is to evaluate the temperature difference between the outdoor and indoor environments, as well as the distribution of air temperature in the room. The computational results for internal air temperatures of the office ranged from 23°C to 26°C, while the airflow velocity was low at less than 0.3 m/s. The temperature differences between the indoor and outdoor spaces varied between 9 °C and 15 °C. Good agreement was achieved between the computed and measured temperature results. The error percentage varied from 0.3% to 0.8%. The experimental and numerical results showed that well-designed double glazing can reduce the emission of sunshine and heat inside desert buildings, even using the northeastern facade, in sunny climates.

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“…DOI: 10.2478DOI: 10. /sspjce-2013 Some studies devote to the issue of air inlet and they show that the above mentioned hypothesis is true [5][6][7][8][9][10]. However, this system is necessary to verify also in the weather conditions of Slovakia.…”

Section: Introductionmentioning

confidence: 99%

Temperature Stratification of Underfloor and Ceiling Based Air Heating Distribution System in an Experimental Room

Katunský

Lopušniak

Vaskova

2013

Selected Scientific Papers - Journal of Civil Engineering

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Most of air heating and ventilating systems for passive houses inlet air in floors. It is assumed that a natural motion of air is led upwards, and so the right stratification of temperature in the space is ensured. However, in the case of excellently insulated buildings it is possible to assume that an upper inlet of air is also able to ensure the required layering of temperature. Within the experiment an influence of upper and down air inlet for temperature stratification in the space was followed. Night sensors of indoor air temperature are placed for measurement purposes. Measurements are done in the long term. The results from measurements show that both, vertical and horizontal stratification of temperature in rooms of passive houses are equal regardless of the fact, which system of air inlet is used.

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Heat transfer characteristics in air-conditioned rooms using mixing air-distribution system under mixed convection conditions

Cited by 20 publications

References 23 publications

Influence of inlet boundary conditions on 3D steady RANS simulations of non-isothermal mechanical ventilation in a generic closure

Influence of inlet boundary conditions on 3D steady RANS simulations of non-isothermal mechanical ventilation in a generic closure

Comparison of numerical simulation and experimental study on indoor air quality of air-conditioned office building in desert climate

Temperature Stratification of Underfloor and Ceiling Based Air Heating Distribution System in an Experimental Room

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