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Building Simulation 2009, 2(2): 133-142 https://doi.org/10.1007/s12273-009-9310-1
Research Article | Issue | Published: 09 June 2009

Optimization of bathroom ventilation design for an ISO Class 5 clean ward

Show Author's Information Caiqing Yang1,  Xudong Yang1( ),  Tengfang Xu2,  Luchun Sun3,  Wei Gong3
Department of Building Science, School of Architecture, Tsinghua University, Beijing 100084, China
International Energy Studies Group, Lawrence Berkeley National Laboratory, One Cyclotron Road, MS90-3111, Berkeley, CA 94720, USA
Chinese PLA General Hospital, No. 28, Fuxing Road, Haidian District, Beijing 100853, China
Keywords:
CFD, ventilation, contaminant control, hospital, clean ward;bathroom
Cite this article:
Yang C, Yang X, Xu T, et al. Optimization of bathroom ventilation design for an ISO Class 5 clean ward. Building Simulation, 2009, 2(2): 133-142. https://doi.org/10.1007/s12273-009-9310-1
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Abstract Full text About this article

Ventilation is a main method to control the contaminant dispersion within clean wards. In this paper, we investigated the effects of various ventilation designs of the bathroom in an ISO Class 5 clean ward. Specifically, the contaminant dispersion and particle concentrations corresponding to three different ventilation design schemes were characterized and compared using computational fluid dynamics (CFD) analysis. For each design, we examined airflow and particle concentrations for contaminant sources located at two places (i.e., at the toilet seat and on the floor), respectively. Field test was conducted to compare the measured and simulated air velocities and particle concentrations in a hospital clean ward. The implemented CFD modeling of ventilation effects of various designs in this study has proven to accurately characterize airflow and contaminant control in the ventilated space, and has led to optimizing ventilation for the bathroom in an ISO Class 5 clean ward.


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About this article

Optimization of bathroom ventilation design for an ISO Class 5 clean ward

Show Author's information Caiqing Yang1, Xudong Yang1( ), Tengfang Xu2, Luchun Sun3, Wei Gong3
Department of Building Science, School of Architecture, Tsinghua University, Beijing 100084, China
International Energy Studies Group, Lawrence Berkeley National Laboratory, One Cyclotron Road, MS90-3111, Berkeley, CA 94720, USA
Chinese PLA General Hospital, No. 28, Fuxing Road, Haidian District, Beijing 100853, China

Abstract

Ventilation is a main method to control the contaminant dispersion within clean wards. In this paper, we investigated the effects of various ventilation designs of the bathroom in an ISO Class 5 clean ward. Specifically, the contaminant dispersion and particle concentrations corresponding to three different ventilation design schemes were characterized and compared using computational fluid dynamics (CFD) analysis. For each design, we examined airflow and particle concentrations for contaminant sources located at two places (i.e., at the toilet seat and on the floor), respectively. Field test was conducted to compare the measured and simulated air velocities and particle concentrations in a hospital clean ward. The implemented CFD modeling of ventilation effects of various designs in this study has proven to accurately characterize airflow and contaminant control in the ventilated space, and has led to optimizing ventilation for the bathroom in an ISO Class 5 clean ward.

Keywords: CFD, ventilation, contaminant control, hospital, clean ward;bathroom

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Publication history
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Acknowledgements

Publication history

Received: 03 April 2009
Revised: 08 May 2009
Accepted: 12 May 2009
Published: 09 June 2009
Issue date: June 2009

Copyright

© Tsinghua University Press and Springer-Verlag 2009

Acknowledgements

This project is financially supported by China’s Eleventh Five-Year Scientific Research Support Program Project No. 2006BAJ02A08, and the Specialized Research Fund for the Doctoral Program of Higher Education of China, Approval Number 20060003065.

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