Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/29545
Title: Exposure generated by cough released droplets in the indoor environment - A comparison among four ventilation systems
Authors: JOVAN PANTELIC
Keywords: ventilation, airborne infection, personalized ventilation, PIV, air distribution, risk assessment
Issue Date: 10-Aug-2010
Source: JOVAN PANTELIC (2010-08-10). Exposure generated by cough released droplets in the indoor environment - A comparison among four ventilation systems. ScholarBank@NUS Repository.
Abstract: Respiratory secretions from an infected person can be aerosolized through expiratory activities and dispersed through indoor environment due to the airflow pattern generated with air delivery system. This study shows that Desktop Personalized Ventilation has the highest ability to provide protection of the users from the airborne transmission of infectious diseases. Among total volume systems Displacement ventilation shows the best performance for the supply flow rate of 6 ACH. When supply flow rate was 12 ACH Mixing Ventilation showed the best protective performance. At various distances between infected occupant and susceptible occupant (1 m, 2 m, 3 m and 4 m) ventilation systems have different performance but Desktop Personalized Ventilation showed the best protective ability from cough droplets released from sitting and standing height. Flow field analysis revealed that Desktop Personalized Ventilation flow provides additional protection by diluting cough released droplets in the breathing zone. Mixing Ventilation and Underfloor Ventilation systems dilute droplets in the total volume of room with airflow patterns generated while Displacement ventilation removes cough released droplets with convective boundary layer generated around the heated human body.
URI: http://scholarbank.nus.edu.sg/handle/10635/29545
Appears in Collections:Ph.D Theses (Open)

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1. Title of the thesis.pdf54.97 kBAdobe PDF

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2. Table of Contents.pdf374.91 kBAdobe PDF

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3. Jovan Pantelic PhD thesis.pdf5.33 MBAdobe PDF

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4. Appendix 3 A.5. MV 6 ACH sitting 2 m s-r distance.pdf438.9 kBAdobe PDF

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5. Appendix 3 A.6. V-field MV 6 ACH-1 sitting 2m s-r distance.pdf1.4 MBAdobe PDF

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6. Appendix 3 A.7. MV 6 ACH sitting 3 m s-r distance front.pdf422.37 kBAdobe PDF

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7. Appendix 3 A.8. V-field MV 6 ACH sitting 3 m s-r distance front.pdf1.44 MBAdobe PDF

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8. Appendix 3 A.9. MV 6 ACH sitting 4m s-r distance front.pdf512.01 kBAdobe PDF

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9. Appendix 3 A.10. V-field MV 6 ACH sitting 4 m s-r distance front.pdf947.09 kBAdobe PDF

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10. Appendix 3 A.11. MV 12 ACH sitting 2 m s-r distance.pdf451.88 kBAdobe PDF

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11 Appendix 3 A 12 V-field MV 12 ACH-1 sitting 2 m s-r distance.pdf1.46 MBAdobe PDF

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12 Appendix 3 A 13 MV 12 ACH sitting 3 m s-r distance front.pdf299.57 kBAdobe PDF

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13 Appendix 3 A 14 V-field MV 12 ACH sitting 3 m s-r distance front.pdf993.61 kBAdobe PDF

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14 Appendix 3 A 15 MV 12 ACH sitting 4 m s-r distance front.pdf360.01 kBAdobe PDF

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15 Appendix 3 A 16 V-field MV 12 ACH sitting 4 m s-r distance front.pdf659.52 kBAdobe PDF

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