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

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Characteristics of the Transient Pressure in a Building Water Supply System with an Air Chamber

공기실이 설치된 건축물 급수관로의 과도압력 특성

  • 황희성 (대전산업대학교 제어계측·건축설비공학부.) ;
  • 임기원 (한국표준과학연구원 유체유동그룹) ;
  • 이광복 (한국표준과학연구원 유체유동그룹) ;
  • 조병선 (대전산업대학교 제어계측·건축설비공학부.) ;
  • 차동진 (대전산업대학교 제어계측·건축설비공학부.)
  • Published : 2000.08.01
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Abstract

A numerical study has been conducted to characterize the transient pressure in a building water supply system with an air chamber by utilizing a commercial code that employs the method of characteristics. Some results produced for the purpose of verification in the study agree quite well with the previously reported. Several parameters are then varied. Among them are the valve closure time, the wave speed, the static pressure, the polytropic exponent, the air chamber volume, the inner diameter and the shape of orifice in the air chamber, etc, while the water temperature and velocity are kept constant at $20^P{circ}C $,/TEX> and 0.8 m/s, respectively, Results reported in this parametric study may be useful to understand the unsteady behavior of the system.

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References

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