Airflow Patterns through Single Hinged and Sliding Doors in Hospital Isolation Rooms

Kalliomäki, Petri; Saarinen, Pekka; Tang, Julian W.; Koskela, Hannu

doi:10.1080/14733315.2015.11684074

Cited by 23 publications

(46 citation statements)

References 2 publications

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“…This article extends the scope of the previously published baseline papers by Tang et al [19], Kalliom€ aki et al [20] and Saarinen et al [23] in which the authors studied the isolation room door operation induced airflows with small-scale water, full-scale air and CFD models without ventilation. This paper takes these experiments a step further and examines the effect of realistic ventilation rates, supply-exhaust flow rate differential and simulated human passage on the airflow patterns and air volume exchange across the isolation room doorway generated by hinged and sliding doors.…”

Section: Introductionsupporting

confidence: 64%

“…The related baseline measurements without ventilation (i.e. 0 ACH) were reported earlier by Kalliom€ aki et al [20]. Fig.…”

Section: Experimental Parametersmentioning

confidence: 57%

“…Enhanced usage has led to increased interest in containment testing and to door operation induced air and contaminant transport [19e34]. A wide variety of different methods have been used to study the issue, including: computational fluid dynamics (CFD) [23,26,30e32,34], small-scale models [19,22,24,29], full-scale models [20] and field studies [21,25,27,28,32,33].…”

Section: Introductionmentioning

confidence: 99%

“…Regardless of the methods used, most of the studies have concentrated on the single hinged door-generated airflows [21e25,27e29,31e33] and only a few of the recent studies have experimentally examined the differences between hinged and sliding doors [19,20], although the differences between the two door types have not always been clear. For instance, some earlier studies have shown that the usage of sliding doors can reduce the airflow out of the isolation rooms compared to hinged doors [17,35].…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, it has been argued also that there are no significant differences on the isolation efficiency [36] or on the air volume migration generated by the operation the two door types [18]. However, more recent studies have shown experimentally that sliding doors can reduce the air exchange through the doorway [19,20]. Nevertheless, more evidence and data are needed on the range of door-opening-induced flows with and without passage under realistic isolation room conditions (e.g.…”

Section: Introductionmentioning

confidence: 99%

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Airflow patterns through single hinged and sliding doors in hospital isolation rooms – Effect of ventilation, flow differential and passage

Kalliomäki

Saarinen

Tang

et al. 2016

Building and Environment

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a b s t r a c tNegative pressure isolation rooms are used to house patients with highly contagious diseases (e.g. with airborne diseases) and to contain emitted pathogens to reduce the risk for cross-infection in hospitals. Airflows induced by door opening motion and healthcare worker passage can, however, transport the potentially pathogen laden air across the doorway. In this study airflow patterns across the isolation room doorway induced by the operation of single hinged and sliding doors with simulated human passage were examined. Smoke visualizations demonstrated that the hinged door opening generated a greater flow across the doorway than the sliding door. Tracer gas measurements showed that the examined ventilation rates (6 and 12 air changes per hour) had only a small effect on the air volume exchange across the doorway with the hinged door. The results were more variable with the sliding door. Supply-exhaust flow rate differential reduced the door motion-induced air transfer significantly with both door types. The experiments showed that the passage induced substantial air volume transport through the doorway with both door types. However, overall, the sliding door performed better in all tested scenarios, because the door-opening motion itself generated relatively smaller air volume exchange across the doorway, and hence should be the preferred choice in the design of isolation rooms.

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Section: Introductionsupporting

confidence: 64%

“…The related baseline measurements without ventilation (i.e. 0 ACH) were reported earlier by Kalliom€ aki et al [20]. Fig.…”

Section: Experimental Parametersmentioning

confidence: 57%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Airflow patterns through single hinged and sliding doors in hospital isolation rooms – Effect of ventilation, flow differential and passage

Kalliomäki

Saarinen

Tang

et al. 2016

Building and Environment

Self Cite

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Design of Automatic Sliding Door System for Negative Pressure Isolation Room Modularization

Duong,

Nguyen,

Duong

et al. 2024

Lecture Notes in Electrical Engineering

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Current and potential approaches on assessing airflow and particle dispersion in healthcare facilities: a systematic review

Tan

Wong

Othman

et al. 2022

Environ Sci Pollut Res

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An indoor environment in a hospital building requires a high indoor air quality (IAQ) to overcome patients’ risks of getting wound infections without interrupting the recovery process. However, several problems arose in obtaining a satisfactory IAQ, such as poor ventilation design strategies, insufficient air exchange, improper medical equipment placement and high door opening frequency. This paper presents an overview of various methods used for assessing the IAQ in hospital facilities, especially in an operating room, isolation room, anteroom, postoperative room, inpatient room and dentistry room. This review shows that both experimental and numerical methods demonstrated their advantages in the IAQ assessment. It was revealed that both airflow and particle tracking models could result in different particle dispersion predictions. The model selection should depend on the compatibility of the simulated result with the experimental measurement data. The primary and secondary forces affecting the characteristics of particle dispersion were also discussed in detail. The main contributing forces to the trajectory characteristics of a particle could be attributed to the gravitational force and drag force regardless of particle size. Meanwhile, the additional forces could be considered when there involves temperature gradient, intense light source, submicron particle, etc. The particle size concerned in a healthcare facility should be less than 20 μm as this particle size range showed a closer relationship with the virus load and a higher tendency to remain airborne. Also, further research opportunities that reflect a more realistic approach and improvement in the current assessment approach were proposed.

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Airflow Patterns through Single Hinged and Sliding Doors in Hospital Isolation Rooms

Cited by 23 publications

References 2 publications

Airflow patterns through single hinged and sliding doors in hospital isolation rooms – Effect of ventilation, flow differential and passage

Airflow patterns through single hinged and sliding doors in hospital isolation rooms – Effect of ventilation, flow differential and passage

Design of Automatic Sliding Door System for Negative Pressure Isolation Room Modularization

Current and potential approaches on assessing airflow and particle dispersion in healthcare facilities: a systematic review

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