An experimental study of ventilation effectiveness in mechanical ventilation systems using a tracer gas method

Jae Keun Lee; Tae Wook Kang; Kam Gyu Lee; Min Chul Cho; Jin Hyuk Shin; Seong Chan Kim; Jeong Hwan Koo; Jong Ho Lee

An experimental study of ventilation effectiveness in mechanical ventilation systems using a tracer gas method

Jae Keun Lee, Tae Wook Kang, Kam Gyu Lee, Min Chul Cho, Jin Hyuk Shin, Seong Chan Kim, Jeong Hwan Koo, Jong Ho Lee

Mechanical Engineering

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3 Scopus citations

Abstract

The ventilation effectiveness is evaluated as a function of air exchange rate and supply/extract locations in a simplified model chamber using a tracer gas technique of CO₂ gas injected into a supply duct. Ventilation systems consist of supply and extract fans, a CO₂ gas generator, a CO₂ gas analyzer and a test chamber. The ventilation effectiveness is evaluated using a step-down method based on ASTM Standard E741-83. The room mean age of the model chamber is decreased with increasing air exchange rate ranged from 6 to 10 air changes per hour. The ventilation effectiveness of the mechanical inlet/natural extract system is better than that of the mechanical inlet/extract system and the natural inlet/mechanical extract system.

Original language	English (US)
Pages (from-to)	1286-1295
Number of pages	10
Journal	KSME International Journal
Volume	14
Issue number	11
State	Published - Nov 2000

Keywords

Age of air
Air changes per hour (ACH)
Step-down method
Tracer gas
Ventilation effectiveness

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abstract = "The ventilation effectiveness is evaluated as a function of air exchange rate and supply/extract locations in a simplified model chamber using a tracer gas technique of CO2 gas injected into a supply duct. Ventilation systems consist of supply and extract fans, a CO2 gas generator, a CO2 gas analyzer and a test chamber. The ventilation effectiveness is evaluated using a step-down method based on ASTM Standard E741-83. The room mean age of the model chamber is decreased with increasing air exchange rate ranged from 6 to 10 air changes per hour. The ventilation effectiveness of the mechanical inlet/natural extract system is better than that of the mechanical inlet/extract system and the natural inlet/mechanical extract system.",

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AU - Shin, Jin Hyuk

AU - Kim, Seong Chan

AU - Koo, Jeong Hwan

AU - Lee, Jong Ho

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AB - The ventilation effectiveness is evaluated as a function of air exchange rate and supply/extract locations in a simplified model chamber using a tracer gas technique of CO2 gas injected into a supply duct. Ventilation systems consist of supply and extract fans, a CO2 gas generator, a CO2 gas analyzer and a test chamber. The ventilation effectiveness is evaluated using a step-down method based on ASTM Standard E741-83. The room mean age of the model chamber is decreased with increasing air exchange rate ranged from 6 to 10 air changes per hour. The ventilation effectiveness of the mechanical inlet/natural extract system is better than that of the mechanical inlet/extract system and the natural inlet/mechanical extract system.

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An experimental study of ventilation effectiveness in mechanical ventilation systems using a tracer gas method

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