설비공학논문집 (Korean Journal of Air-Conditioning and Refrigeration Engineering)

  • 제29권3호
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  • Pages.105-110
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  • 2017
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  • 1229-6422(pISSN)
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  • 2465-7611(eISSN)
대한설비공학회 (The Society of Air-Conditioning and Refrigerating Engineers of Korea)
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CFD를 활용한 바닥공조시스템 디퓨저의 성층화 모델 예측

Prediction of Stratification Model for Diffusers in Underfloor Air Distribution System using the CFD

  • 손정은 (국립한밭대학교 대학원 건축공학과) ;
  • 유병호 (국립한밭대학교 대학원 건축공학과) ;
  • 방승기 (경민대학교 건축학과) ;
  • 이광호 (국립한밭대학교 건축공학과)
  • 투고 : 2016.09.07
  • 심사 : 2016.12.21
  • 발행 : 2017.03.10
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초록

Underfloor air distribution (UFAD) is an air distribution strategy for providing ventilation and space conditioning in buildings. UFAD systems use the underfloor plenum beneath a raised access floor to provide conditioned air through floor diffusers that create a vertical thermal stratification during cooling operations. Thermal stratification has significant effects on energy, indoor air quality, and thermal comfort performance. The purpose of this study was to characterize the influence of a linear bar grille diffuser on thermal stratification in both interior and perimeter zones by developing Gamma-Phi based prediction models. Forty-eight simulations were carried out using a Computational Fluid Dynamics (CFD) technique. The number of diffusers, the air flow supply, internal heat gains, and solar radiations varied among the different cases. Models to predict temperature stratification for the tested linear bar grille diffuser have been developed, which can be directly implemented into dynamic whole-building simulation software such as EnergyPlus.

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참고문헌

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  7. Schiavon, S., Webster, T., Dickerhoff, D., and Bauman, F., 2014, Stratification Prediction Model for Perimeter Zone UFAD Diffusers based on Laboratory testing with Solar Simulator, Journal of Energy and Building, Vol. 82, pp. 786-794. https://doi.org/10.1016/j.enbuild.2014.07.056
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