대한설비공학회:학술대회논문집 (Proceedings of the SAREK Conference)
- 대한설비공학회 2007년도 동계학술발표대회 논문집
- /
- Pages.99-104
- /
- 2007
실간환기량 측정을 위한 멀티추적가스법의 검증실험
An Experiment on Verification of Multi-Gas Tracer Technique for Air Exchange Rate Between Rooms
-
Han, Hwa-Taik
(Department of Mechanical Engineering, Kookmin University) ;
- Cho, Seok-Hyo (Graduate School of Mechanical Engineering, Kookmin University)
- 발행 : 2007.11.30
초록
Tracer gas technique is widely used to measure the ventilation rates and/or ventilation effectiveness of building spaces. However, the conventional method using a single tracer gas can measure only outdoor air change rates in a single zone. This paper deals with the multi-gas tracer technique to measure air exchange rates between rooms. Interzonal air movements are important to characterize overall ventilation performance of complicated multi-zone buildings. Experiments are conducted in a simple two-room model with known airflow rates using tracer gases of SF6 and R134a. The concentration decays of two tracer gases are measured after simultaneous injections in each room. The governing equations are derived from the continuity and the mass balance of each room. The data reduction procedure are developed to obtain the inter-room airflow rates using the governing matrix inversion, and various data manipulation methods are tested, such as data shift, interpolation, smoothing, and etc, to improve the estimate and interpretation of the results.
키워드