비등온 급기조건에서 환기방식에 따른 환기효율 특성에 관한 연구

A Study on Ventilation Effectiveness in the Non-isothermal Supply using Mixing and Displacement Ventilation Systems

  • 발행 : 2001.08.01

초록

The objective of this research is to analyze the ventilation effectiveness in the non-isothermal air supply using mixing and displacement ventilation systems for indoor air quality control and management. In this study, a ventilation effectiveness is evaluated in a simplified model chamber using a tracer gas technique of $CO^2$ gas injected into a supply duct as a function of ventilation rates, supply/extract sites and cooling/heating air supply. The ventilation effectiveness decreased with increasing ventilation rate on the cooling and heating conditions. And the ventilation effectiveness of case 3 (down supply and upper extract) was better thant that of case 1(upper supply and upper extract) and case 2(upper supply and down extract) with the cooling supply conditions. but for the heating supply air conditions, the ventilation effectiveness of case 2 was better than that of case 3 and case 1.

키워드

참고문헌

  1. ASHRAE Handbook Fundamentals ASHRAE
  2. ASHRAE Standard 62-1989 Ventilation for Acceptable Indoor Air Quality
  3. Building Ventilation Theory and Measurement Etheridge,D.;Sandberg,M.
  4. ASHRAE Standard 129-1977 Measuring air Change effectiveness ASHRAE
  5. KSME International Journal v.14 no.11 An Experimental Study of Ventilation Effectiveness in Mechanical Ventilation Systems using a Tracer Gas Method Lee, J. K.;Kang, T. W.;Lee, K. G.;Cho, M. C.;Shin, J. H.;Kim, S. C.;Koo, J. H.;Lee, J. H.
  6. Proceeding of the SAREK '99 Winter Annual Conference (Ⅱ) A Study of Ventilation Effectiveness with Three Type Mechanical Ventilation Systems Using Tracer Gas Cho, M. C.;Jung, J. H.;Koo, J. H.;Lee, J. K.;Kang, T. W.;Seo, Y. I.;Lee, K. G.
  7. Korean Journal of Air-Conditioning and Refrigeration Engineering v.28 no.1 On the definition of ventilaton effectiveness Han, H. T.
  8. ASTM Standard 741-83 Standard Test Method for Determining Air Change in a Single Zone by Means of a Tracer Gas Dilution
  9. MS thesis, Pusan National University Ventilation Characteristics of Three Type Mechanical Ventilation Systems using a Model Chamber Cho,M.C.
  10. MS thesis, Pusan National University A Study on Ventilation Effectiveness in the Non-isothermal Supply using Mixing and Displacement Ventilation Systems Yoon,S.G.