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Performance of air-conditioning systems in SARS negative pressure isolation rooms.

Author(s) : LI Y., CHING W. H., QIAN H., et al.

Summary

In response to the 2003 severe acute respiratory syndrome (SARS) outbreak, the Hong Kong Government promptly constructed a large number of new SARS isolation rooms with more than 1300 beds in 14 hospitals by the end of 2003. The authors measured the negative pressure, airflow path, air change rate and local ventilation effectiveness in selected insulation rooms in 9 major hospitals and they assessed the ventilation performance against the CDC requirements. 97% of the 38 rooms tested met the recommended negative pressure difference of 2.5 Pa between corridor and anteroom. 89% of 48 of the rooms tested met the same requirement between anteroom and cubicle. No leakage of air to the corridor was found, 66% of the toilets/bathrooms were operated under a positive pressure. Over 90% of the corridor-anteroom or anteroom-cubicle doors had a bi-directional flow when the door was open. Of the 35 tested cubicles, 74% had the air change rate greater than or equal to 12 ACH. The local ventilation effectiveness is non-uniform in the cubicles.

Details

  • Original title: Performance of air-conditioning systems in SARS negative pressure isolation rooms.
  • Record ID : 2007-0351
  • Languages: English
  • Source: ACRA-2006. Proceedings of the 3rd Asian conference on refrigeration and air conditioning.
  • Publication date: 2006/05/21

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