Protection Against Cross Infection in Hospital Beds with Integrated Personalized Ventilation

Peter V. Nielsen, Marcin Polak, Hao Jiang, Yuguo Li, Hua Qian

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

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Abstract

Normally we protect ourselves from cross infection by supplying fresh air to a room by a diffuser, and the air is then distributed in the room according to different principles such as: mixing ventilation, displacement ventilation, vertical ventilation, etc.

However, there is a possibility to supply air directly to the breathing zone when people are lying in beds, e.g. in a hospital ward. This principle, called "Personalized Ventilation" has shown to be very efficient in the protection of people from cross infection.

The system supplies fresh air into the breathing zone through a pillow or a blanket. The system can also be used to reduce the emission of viruses or bacteria from the exhalation of a source patient. The air supplied from the personalized ventilation (PV) diffuser rises to the ceiling and with the right air distribution system it can be removed from the room.

The experiments in this paper are carried out with tracer gas and two thermal manikins in the experimental SARS ward at Hong Kong University. One of the manikins is the source manikin, and the other one the target. The measurements show that a very high degree of protection can be obtained with this system. Optimum flow rate and temperature of the supply air are addressed in the research work.

Original languageEnglish
Title of host publicationProceedings of Indoor Air 2008 : The 11th International Conference on Indoor Air Quality and Climate, Copenhagen, Denmark, 17 - 22 August, 2008
Number of pages8
PublisherTechnical University of Denmark (DTU)
Publication date2008
Publication statusPublished - 2008
EventInternational Conference on Indoor Air Quality and Climate - Copenhagen, Denmark
Duration: 17 Aug 200822 Aug 2008
Conference number: 11

Conference

ConferenceInternational Conference on Indoor Air Quality and Climate
Number11
CountryDenmark
CityCopenhagen
Period17/08/200822/08/2008

Fingerprint

Hospital beds
Ventilation
Air
Diffusers (fluid)
Ceilings
Viruses
Bacteria
Flow rate
Gases

Bibliographical note

Published on an USB

Keywords

  • Personalized ventilation
  • Cross infection
  • Hospital bed
  • Vertical downward ventilation
  • Full- scale experiments
  • Thermal manikin

Cite this

Nielsen, P. V., Polak, M., Jiang, H., Li, Y., & Qian, H. (2008). Protection Against Cross Infection in Hospital Beds with Integrated Personalized Ventilation. In Proceedings of Indoor Air 2008: The 11th International Conference on Indoor Air Quality and Climate, Copenhagen, Denmark, 17 - 22 August, 2008 Technical University of Denmark (DTU).
Nielsen, Peter V. ; Polak, Marcin ; Jiang, Hao ; Li, Yuguo ; Qian, Hua. / Protection Against Cross Infection in Hospital Beds with Integrated Personalized Ventilation. Proceedings of Indoor Air 2008: The 11th International Conference on Indoor Air Quality and Climate, Copenhagen, Denmark, 17 - 22 August, 2008. Technical University of Denmark (DTU), 2008.
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Nielsen, PV, Polak, M, Jiang, H, Li, Y & Qian, H 2008, Protection Against Cross Infection in Hospital Beds with Integrated Personalized Ventilation. in Proceedings of Indoor Air 2008: The 11th International Conference on Indoor Air Quality and Climate, Copenhagen, Denmark, 17 - 22 August, 2008. Technical University of Denmark (DTU), International Conference on Indoor Air Quality and Climate, Copenhagen, Denmark, 17/08/2008.

Protection Against Cross Infection in Hospital Beds with Integrated Personalized Ventilation. / Nielsen, Peter V.; Polak, Marcin; Jiang, Hao; Li, Yuguo; Qian, Hua.

Proceedings of Indoor Air 2008: The 11th International Conference on Indoor Air Quality and Climate, Copenhagen, Denmark, 17 - 22 August, 2008. Technical University of Denmark (DTU), 2008.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

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AU - Li, Yuguo

AU - Qian, Hua

N1 - Published on an USB

PY - 2008

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N2 - Normally we protect ourselves from cross infection by supplying fresh air to a room by a diffuser, and the air is then distributed in the room according to different principles such as: mixing ventilation, displacement ventilation, vertical ventilation, etc. However, there is a possibility to supply air directly to the breathing zone when people are lying in beds, e.g. in a hospital ward. This principle, called "Personalized Ventilation" has shown to be very efficient in the protection of people from cross infection. The system supplies fresh air into the breathing zone through a pillow or a blanket. The system can also be used to reduce the emission of viruses or bacteria from the exhalation of a source patient. The air supplied from the personalized ventilation (PV) diffuser rises to the ceiling and with the right air distribution system it can be removed from the room. The experiments in this paper are carried out with tracer gas and two thermal manikins in the experimental SARS ward at Hong Kong University. One of the manikins is the source manikin, and the other one the target. The measurements show that a very high degree of protection can be obtained with this system. Optimum flow rate and temperature of the supply air are addressed in the research work.

AB - Normally we protect ourselves from cross infection by supplying fresh air to a room by a diffuser, and the air is then distributed in the room according to different principles such as: mixing ventilation, displacement ventilation, vertical ventilation, etc. However, there is a possibility to supply air directly to the breathing zone when people are lying in beds, e.g. in a hospital ward. This principle, called "Personalized Ventilation" has shown to be very efficient in the protection of people from cross infection. The system supplies fresh air into the breathing zone through a pillow or a blanket. The system can also be used to reduce the emission of viruses or bacteria from the exhalation of a source patient. The air supplied from the personalized ventilation (PV) diffuser rises to the ceiling and with the right air distribution system it can be removed from the room. The experiments in this paper are carried out with tracer gas and two thermal manikins in the experimental SARS ward at Hong Kong University. One of the manikins is the source manikin, and the other one the target. The measurements show that a very high degree of protection can be obtained with this system. Optimum flow rate and temperature of the supply air are addressed in the research work.

KW - Personalized ventilation

KW - Cross infection

KW - Hospital bed

KW - Vertical downward ventilation

KW - Full- scale experiments

KW - Thermal manikin

M3 - Article in proceeding

BT - Proceedings of Indoor Air 2008

PB - Technical University of Denmark (DTU)

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Nielsen PV, Polak M, Jiang H, Li Y, Qian H. Protection Against Cross Infection in Hospital Beds with Integrated Personalized Ventilation. In Proceedings of Indoor Air 2008: The 11th International Conference on Indoor Air Quality and Climate, Copenhagen, Denmark, 17 - 22 August, 2008. Technical University of Denmark (DTU). 2008