Author: Saarinen, Pekka E.; Kalliomäki, Petri; Tang, Julian W.; Koskela, Hannu
Title: Large Eddy Simulation of Air Escape through a Hospital Isolation Room Single Hinged Doorway—Validation by Using Tracer Gases and Simulated Smoke Videos Document date: 2015_7_7
ID: 15oi1wza_22
Snippet: The volume ΔV i!j of air migrating from room i to room j during the door and passage cycle can be measured if we mark the air in room i prior to the cycle. A standard method to do this is to release suitable tracer gas in the air in room i. Let us assume it is spread evenly throughout the room to have a uniform mass concentration Ï. After the door and passage cycle, if the air in room j is mixed with a fan, and the mass concentration of the tra.....
Document: The volume ΔV i!j of air migrating from room i to room j during the door and passage cycle can be measured if we mark the air in room i prior to the cycle. A standard method to do this is to release suitable tracer gas in the air in room i. Let us assume it is spread evenly throughout the room to have a uniform mass concentration Ï. After the door and passage cycle, if the air in room j is mixed with a fan, and the mass concentration of the tracer gas there after the cycle is measured and multiplied by the room volume, the migrated mass Δm of tracer gas is obtained. Then the volume of room i air that has escaped into room j is
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