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

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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A Study on The Performance of Ventilation and Thermal Environment for a Combined Type Diffuser in a Residential Space

거주공간에 대한 급·배기 일체형 디퓨저의 환기 및 온열환경 유지성능에 대한 연구

  • Lim, Seok-Young (Department of Architectural Engineering, Graduate school, Hongik University) ;
  • Chang, Hyun-Jae (Department of Architectural Engineering, Hongik University)
  • 임석영 (홍익대학교 건축공학과 대학원) ;
  • 장현재 (홍익대학교 건축공학과)
  • Received : 2016.11.30
  • Accepted : 2016.12.19
  • Published : 2017.02.10
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Abstract

In this study, the combined-type diffuser developed by the Authors, in a previous study, was applied to a residential space. The performance of a ventilation and thermal environment, created by the use of a combined-type diffuser was compared to the pan-type diffuser widely used in apartment houses. In cooling conditions, because of the relatively high air flow rate of ceiling cassette-type air conditioners, the characteristics of airflow distribution in a room were governed by the air conditioner's airflow. In heating conditions, because of the low air flow rate of the diffuser, the characteristics of airflow distribution were governed by the buoyancy effect created by cold external walls and a hot floor. In terms of the Air Diffusion Performance Index (ADPI), which is a thermal environmental index, the result of a combined-type diffuser was greater than a pan-type diffuser in both of cooling and heating conditions. Consequently, the combined-type diffuser showed equal or superior ventilation and thermal environment performance compared to a pan-type diffuser.

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References

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