Journal of Mechanical Science and Technology

The Korean Society of Mechanical Engineers (대한기계학회)
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An Experimental Study of Ventilation Effectiveness in Mechanical Ventilation systems using a Tracer Gas Method

  • Lee, Jae keun (Research Institute of Mechanical Techology, Department of Mechanical Engineering, Pusan National University) ;
  • Kang, Tae-Wook (LG Electronic Inc. Airconditioners OBU) ;
  • Lee, Kam-Gyu (LG Electronic Inc. Airconditioners OBU) ;
  • Cho, Min-Chul (LG Electronic Inc. Digital Appliance Laboratory) ;
  • Shin, Jin-Hyuk (Research Institute of Mechanical Techology, Department of Mechanical Engineering, Pusan National) ;
  • Kim, Seong-Chan (Research Institute of Mechanical Techology, Department of Mechanical Engineering, Pusan National) ;
  • Koo, Jeong-Hwan (Research Institute of Mechanical Techology, Department of Mechanical Engineering, Pusan National) ;
  • Lee, Jong ho (Research Institute of Mechanical Techology, Department of Mechanical Engineering, Pusan National)
  • Published : 2000.11.01
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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 CO$_2$ gas injected into a supply duct. Ventilation systems consist of supply and extract fans, a CO$_2$gas generator, a CO$_2$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 fanged from 6to 10 air changes per hour. The ventilation effectiveness of the mechanical inlet/natural extract system is better than that of the mechanical extract system.

Keywords

References

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