An alternative ventilation system for operating theatres: An experimental and CFD study on the performance of a local ventilation device

Jelle G.H. Loogman, Ivo M. de Visser, Marcel G.L.C. Loomans, Helianthe S.M. Kort, Nard P.M. van der Sanden, Remko J.R. Noor, Erik R.T. Burgmeijer, Peter van Wieren

Research output: Contribution to conferencePaperAcademic

Abstract

A local operating theatre ventilation device which ventilates the wound area only, was investigated applying a parameter study. The ventilation device is combined with a blanket which lies over the patient during the operation. Two configurations were studied: configuration 1 where HEPA-filtered air was supplied around and parallel to the wound area and configuration 2 where HEPA-filtered air was supplied from the top surface of the blanket, perpendicular to the wound area. The objective of the parameter study was to identify critical parameters. A simplified setup, which consisted of a sideways contaminated airflow and a HEPA-filtered airflow, was studied by experiments and CFD simulations. Particle concentrations (≥0.5µm) were measured at the wound, relative to a non-ventilated situation with only sideways contaminated airflow (N=30 per series; expressed in %). The effect of supply velocity, temperature and contaminant velocity were investigated. In isothermal conditions relative particle concentrations of 0-11% and 0-1% were measured for configuration 1 and 2 with a supply velocity of 0.40m/s and 0.30m/s respectively. However, differences between both configurations were not significant. Furthermore, configuration 1 was more sensitive to lower supply velocities (P<0.04) and higher supply temperatures (P<0.04). CFD simulations showed similar trends, although absolute values were more positive.

Original languageEnglish
Publication statusPublished - 1 Jan 2015
EventHealthy Buildings Europe 2015, HB 2015 - Eindhoven University of Technology, Eindhoven, Netherlands
Duration: 18 May 201520 May 2015
http://hb2015-europe.org/

Conference

ConferenceHealthy Buildings Europe 2015, HB 2015
Abbreviated titleHB 2015 Europe
CountryNetherlands
CityEindhoven
Period18/05/1520/05/15
Internet address

Fingerprint

Theaters
Ventilation
Computational fluid dynamics
Air
Impurities
Temperature
Experiments

Keywords

  • Air quality
  • Local ventilation
  • Operating theatre
  • Parameter study

Cite this

Loogman, J. G. H., de Visser, I. M., Loomans, M. G. L. C., Kort, H. S. M., van der Sanden, N. P. M., Noor, R. J. R., ... van Wieren, P. (2015). An alternative ventilation system for operating theatres: An experimental and CFD study on the performance of a local ventilation device. Paper presented at Healthy Buildings Europe 2015, HB 2015, Eindhoven, Netherlands.
Loogman, Jelle G.H. ; de Visser, Ivo M. ; Loomans, Marcel G.L.C. ; Kort, Helianthe S.M. ; van der Sanden, Nard P.M. ; Noor, Remko J.R. ; Burgmeijer, Erik R.T. ; van Wieren, Peter. / An alternative ventilation system for operating theatres : An experimental and CFD study on the performance of a local ventilation device. Paper presented at Healthy Buildings Europe 2015, HB 2015, Eindhoven, Netherlands.
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abstract = "A local operating theatre ventilation device which ventilates the wound area only, was investigated applying a parameter study. The ventilation device is combined with a blanket which lies over the patient during the operation. Two configurations were studied: configuration 1 where HEPA-filtered air was supplied around and parallel to the wound area and configuration 2 where HEPA-filtered air was supplied from the top surface of the blanket, perpendicular to the wound area. The objective of the parameter study was to identify critical parameters. A simplified setup, which consisted of a sideways contaminated airflow and a HEPA-filtered airflow, was studied by experiments and CFD simulations. Particle concentrations (≥0.5µm) were measured at the wound, relative to a non-ventilated situation with only sideways contaminated airflow (N=30 per series; expressed in {\%}). The effect of supply velocity, temperature and contaminant velocity were investigated. In isothermal conditions relative particle concentrations of 0-11{\%} and 0-1{\%} were measured for configuration 1 and 2 with a supply velocity of 0.40m/s and 0.30m/s respectively. However, differences between both configurations were not significant. Furthermore, configuration 1 was more sensitive to lower supply velocities (P<0.04) and higher supply temperatures (P<0.04). CFD simulations showed similar trends, although absolute values were more positive.",
keywords = "Air quality, Local ventilation, Operating theatre, Parameter study",
author = "Loogman, {Jelle G.H.} and {de Visser}, {Ivo M.} and Loomans, {Marcel G.L.C.} and Kort, {Helianthe S.M.} and {van der Sanden}, {Nard P.M.} and Noor, {Remko J.R.} and Burgmeijer, {Erik R.T.} and {van Wieren}, Peter",
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Loogman, JGH, de Visser, IM, Loomans, MGLC, Kort, HSM, van der Sanden, NPM, Noor, RJR, Burgmeijer, ERT & van Wieren, P 2015, 'An alternative ventilation system for operating theatres: An experimental and CFD study on the performance of a local ventilation device' Paper presented at Healthy Buildings Europe 2015, HB 2015, Eindhoven, Netherlands, 18/05/15 - 20/05/15, .

An alternative ventilation system for operating theatres : An experimental and CFD study on the performance of a local ventilation device. / Loogman, Jelle G.H.; de Visser, Ivo M.; Loomans, Marcel G.L.C.; Kort, Helianthe S.M.; van der Sanden, Nard P.M.; Noor, Remko J.R.; Burgmeijer, Erik R.T.; van Wieren, Peter.

2015. Paper presented at Healthy Buildings Europe 2015, HB 2015, Eindhoven, Netherlands.

Research output: Contribution to conferencePaperAcademic

TY - CONF

T1 - An alternative ventilation system for operating theatres

T2 - An experimental and CFD study on the performance of a local ventilation device

AU - Loogman, Jelle G.H.

AU - de Visser, Ivo M.

AU - Loomans, Marcel G.L.C.

AU - Kort, Helianthe S.M.

AU - van der Sanden, Nard P.M.

AU - Noor, Remko J.R.

AU - Burgmeijer, Erik R.T.

AU - van Wieren, Peter

PY - 2015/1/1

Y1 - 2015/1/1

N2 - A local operating theatre ventilation device which ventilates the wound area only, was investigated applying a parameter study. The ventilation device is combined with a blanket which lies over the patient during the operation. Two configurations were studied: configuration 1 where HEPA-filtered air was supplied around and parallel to the wound area and configuration 2 where HEPA-filtered air was supplied from the top surface of the blanket, perpendicular to the wound area. The objective of the parameter study was to identify critical parameters. A simplified setup, which consisted of a sideways contaminated airflow and a HEPA-filtered airflow, was studied by experiments and CFD simulations. Particle concentrations (≥0.5µm) were measured at the wound, relative to a non-ventilated situation with only sideways contaminated airflow (N=30 per series; expressed in %). The effect of supply velocity, temperature and contaminant velocity were investigated. In isothermal conditions relative particle concentrations of 0-11% and 0-1% were measured for configuration 1 and 2 with a supply velocity of 0.40m/s and 0.30m/s respectively. However, differences between both configurations were not significant. Furthermore, configuration 1 was more sensitive to lower supply velocities (P<0.04) and higher supply temperatures (P<0.04). CFD simulations showed similar trends, although absolute values were more positive.

AB - A local operating theatre ventilation device which ventilates the wound area only, was investigated applying a parameter study. The ventilation device is combined with a blanket which lies over the patient during the operation. Two configurations were studied: configuration 1 where HEPA-filtered air was supplied around and parallel to the wound area and configuration 2 where HEPA-filtered air was supplied from the top surface of the blanket, perpendicular to the wound area. The objective of the parameter study was to identify critical parameters. A simplified setup, which consisted of a sideways contaminated airflow and a HEPA-filtered airflow, was studied by experiments and CFD simulations. Particle concentrations (≥0.5µm) were measured at the wound, relative to a non-ventilated situation with only sideways contaminated airflow (N=30 per series; expressed in %). The effect of supply velocity, temperature and contaminant velocity were investigated. In isothermal conditions relative particle concentrations of 0-11% and 0-1% were measured for configuration 1 and 2 with a supply velocity of 0.40m/s and 0.30m/s respectively. However, differences between both configurations were not significant. Furthermore, configuration 1 was more sensitive to lower supply velocities (P<0.04) and higher supply temperatures (P<0.04). CFD simulations showed similar trends, although absolute values were more positive.

KW - Air quality

KW - Local ventilation

KW - Operating theatre

KW - Parameter study

UR - http://www.scopus.com/inward/record.url?scp=85052437419&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:85052437419

ER -

Loogman JGH, de Visser IM, Loomans MGLC, Kort HSM, van der Sanden NPM, Noor RJR et al. An alternative ventilation system for operating theatres: An experimental and CFD study on the performance of a local ventilation device. 2015. Paper presented at Healthy Buildings Europe 2015, HB 2015, Eindhoven, Netherlands.