Three-dimensional numerical simulation of a hybrid fresh air and recirculated air diffuser for decoupled ventilation strategy

Yang, Bin; Sekhar, S. Chandra

doi:10.1016/j.buildenv.2006.04.018

Cited by 25 publications

(8 citation statements)

References 7 publications

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“…Yang and Sekhar studied the air velocity and percentage of fresh air provided with the help of PCS nozzles through CFD simulations and field measurements [143]. They simulated two cases of PCS nozzles (D=50 mm), oriented at the angles of 45° and 90° to the ceiling surface, which carried the PCS air from the ceiling-mounted air supply to the subject, and compared these cases to the base case (without a PCS nozzle).…”

Section: 33mentioning

confidence: 99%

Personal comfort systems: A review on comfort, energy, and economics

Rawal

Schweiker

Kazanci

et al. 2020

Energy and Buildings

136

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Section: 33mentioning

confidence: 99%

Personal comfort systems: A review on comfort, energy, and economics

Rawal

Schweiker

Kazanci

et al. 2020

Energy and Buildings

136

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“…The derivation of the standard k-ε model equations are based on phenomenological considerations and empiricism (ANSYS 2015). This model was used by (Gao and Niu 2004;Shen, Gao, and Wang 2013;Bin and Sekhar 2007;Yang et al 2013;Yang and Sekhar 2011;Yang and Sekhar 2014;Gao, Zhang, and Niu 2007;Tham and Pantelic 2010) to study personalized ventilation cases. However, as ANSYS's (2015) user's guide reports, the standard k-ε model has some limitations that can lead to inaccurate results of the spreading rate of round jets.…”

Section: Introductionmentioning

confidence: 99%

Performance assessment of a ductless personalized ventilation system using a validated CFD model

Alsaad

Voelker

2018

Journal of Building Performance Simulation

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The aim of this study is twofold: to validate a computational fluid dynamics (CFD) model, and then to use the validated model to evaluate the performance of a ductless personalized ventilation (DPV) system. To validate the numerical model, a series of measurements was conducted in a climate chamber equipped with a thermal manikin. Various turbulence models, settings, and options were tested; simulation results were compared to the measured data to determine the turbulence model and solver settings that achieve the best agreement between the measured and simulated values. Subsequently, the validated CFD model was then used to evaluate the thermal environment and indoor air quality in a room equipped with a ductless personalized ventilation system combined with displacement ventilation. Results from the numerical model were then used to quantify thermal sensation and comfort using UC Berkeley thermal comfort model.

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“…Mixing ventilation (MV) is the most common air distribution. In this study, the four-way ceiling diffuser with the discharge angle of 20° [ 38 ] is used to provide fully mixed air distribution. The air exhaust inlets are located at the lower wall near the head of the infector to decrease the exposure risk [ 39 ].…”

Section: Methodsmentioning

confidence: 99%