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논문 기본 정보

자료유형
학술대회자료
저자정보
저널정보
대한설비공학회 대한설비공학회 학술발표대회논문집 대한설비공학회 1998년도 하계학술발표회 논문집(Ⅲ)
발행연도
1998.6
수록면
1,335 - 1,340 (6page)

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초록· 키워드

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In this study, the effect of interior partition on the power efficiency of the ventilation system is investigated in terms of ventilation effectiveness. Model experiments using a small-scale model, 1.6^m(L) × 0.8^m(W) × 0.7^m(H), are conducted with mixing ventilation system under isothermal condition. The model has two ceiling-mounted openings for supplying and exhausting ventilation air and a partition with adjustable height and gap height which is placed in the middle of the model. Tracer gas techniques using CO₂ tracer are used to measure the concentration. The data acquisition system which has been used in the tests records the measurement signal and controls tracer gas injection. Numerical computations, using the CFD code Vortex-2, are carried out to simulate the model experimental conditions.
In the model experiments, it has been found that the height of interior partition affects the power efficiency of the ventilation system which is expressed in terms of ventilation effectiveness at the exhaust opening. The efficiency increases with the air change rate, peaking at 70%-high partition. It decreases with installing the partition gap, i.e. the gap affects the air movement more significantly than the partition height. In numerical simulation, the partition effect in terms of room ventilation effectiveness shows similar trend, but has been expressed in a different way. The effectiveness increases with the partition height too and decreases with increasing the partition gap. A further study was carried out with different gap height for 70%-high partition. The results show that there exists an optimal height of the gap which is 4% in this case.

목차

Abstract

1. Introduction

2. Experimental Method

3. Results and Discussion

4. Conclusions

5. Acknowledgement

6. References

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