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To secure the comfortable indoor environment is getting really important and installation of ventilating system became mandatory polity for effective indoor ventilation recently. However, the installation of ventilating system causes problems such as excessive consumption of energy and increase of indoor discomfort after irrelevant control of it. Accordingly, in this research, a study of the hybrid ventilating method which can overcome unreliability of natural ventilation and satisfy the amount of necessary ventilation with energy conservation was carried out. The hybrid ventilating method that was applied to model for evaluation is Fan assisted Natural Ventilation, so the choice that natural ventilation was applied during mid-term and mechanical ventilation was applied during heating/cooling season was made. To evaluate if hybrid ventilating method can be applied, CFDsimulation was carried. To evaluate IAQ and energy performance, operating condition of hybrid ventilating method was set up considering of enthalpy, and it was made to secure the 0.7ACH of ventilation anytime. Accordingly, TRNSYSsimulation was tried, and it showed that comfortable IAQ by natural ventilation can be maintained during 50.4 % period. Consequently, to apply the hybrid ventilation method which uses both natural ventilation and mechanical ventilation would be a lot better than to apply the ventilating method of electric heat exchange for indoor thermal comfort and energy conservation.

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ABSTRACT
1. 서론
2. 하이브리드 환기방식
3. 연구대상
4. CFD해석을 통한 사전평가 및 환기모드 설정
5. 하이브리드 환기방식의 성능평가
6. 결론
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UCI(KEPA) : I410-ECN-0101-2009-553-017659133