Browse > Article

Analysis of Ventilation Performance Using a Model Chamber  

Kang Tae-Wook (LG Electronics Inc.)
Chang Tae-Hyeon (Kyeongnam University)
Abstract
In this study, three different types of mechanical ventilation systems are compared based on their ventilation characteristics: tracer gas concentration decay characteristics, and ventilation effectiveness by calculating actual ventilation air flow rate. The experiments are performed by using a step-down method for measuring tracer gas. $CO_{2}$ gas, concentration in the model chamber. Application of a mixing factor, k, was used and measured values ranged from 0.68 to 0.77. The Type 2 ventilation system was found to have the highest ventilation effectiveness rather than the Types 1 and 3.
Keywords
Ventilation Type; Ventilation Effectiveness; Mixing factor; Step-down method; Air change per hour(ACH);
Citations & Related Records
연도 인용수 순위
  • Reference
1 Bjarne W. Olesen, 'Evaluation of a Vertical Displacement Ventilation System'. Building and Environment, Vol. 29, No. 3, pp. 303-310, 1994   DOI   ScienceOn
2 C. S. Lee, 'Research on Evaluation Method of Indoor Environmental Comfort'. Korea Advanced Institute of Science and Technology, pp. 137-163, 1994
3 P. J. Drivas, P. G. Simmonds, and F. H. Shair, 'Experimental Characterization of Ventilation Systems in Building' Environmental Science Technology, Vol. 6, No 7. 1972
4 American Society for Testing and Materials, 'E741-83, Standard Test Method for Determining Air Leakage Rate by Tracer Dilution', Philadelphia, PA. 1983
5 ASRAE, 'Fundamentals of ASHRAE Handbook', American Society of Heating, Refrigeration and Air Conditioning Engineers, Inc., Atlanta, GA 30329, 2005
6 H. T. Han, 'Measurement of indoor ventilation effectiveness with location of supply and variation of air flow rate', Proceeding of Summer Symposium of Air-Conditioning and Refrigeration, pp. 372-378, 1999
7 H. T. Han, S. Y. Seo, and Y. I. Kim, 'Ventilation effectiveness measurements utilizing a tracer gas in an under floor air-conditioning space', Journal of Air-Conditioning and Refrigeration Vol. 10, No. 5, pp. 610-618, 1998
8 T. W. Kang, ''A Study on Ventilation Performance and Cooling Load Evaluation of a Room Air Conditioner', Pusan National University Ph. D. Thesis, 2002
9 R. Hasebe, 'Ventilation Performance and Thermal Comfort for Displacement Ventilation System in Office Space'. Indoor Air 96 I, pp. 823-828, 1996
10 J. J. Lee, 'Study on Indoor Air Quality Using Model Chamber'. The University of Seoul Ph. D. Thesis, 1995
11 S. D. Kim, 'The Spatial Characteristics of Ventilation Efficiency', Journal of Korean Society for Atmospheric Environment Vol. 9, No. 3, pp. 236-241, 1993