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

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
권호 표지

Simulation of Supply Air Control in a VAV System Using a Stratified Lumped Thermal Model

성층화 열용량 모델을 이용한 VAV 시스템 급기 제어 시뮬레이션

  • 문정우 (한국과학기술연구원 열·유동제어 연구센터) ;
  • 김서영 (한국과학기술연구원 열·유동제어 연구센터) ;
  • 김원년 (한국과학기술연구원 열·유동제어 연구센터) ;
  • 조형희 (연세대학교 기계공학과)
  • Published : 2000.07.01
Download PDF
⟨ Previous Next ⟩

Abstract

The present study concerns the simulation of supply-air control in a variable air volume (VAV) system. A stratified lumped thermal model (multi-zone model) is suggested to predict local thermal response of an air-conditioned space. The effects of various thermal parameters such as the cooling system capacity, the thermal mass of air-conditioned space, the time delay of thermal effect, and the building envelope heat transmission are investigated in detail. Further, the influence of control parameters, PI control factor and the sensor location on a VAV system is quantitatively delineated. The results obtained show that the previous homogeneous lumped thermal model (1-zone model) may predict a significantly different thermal response in the air-conditioned space according to the sensor location.

Keywords

References

  1. Various HVAC system v.14 no.9 Kim, D. M.
  2. HVAC fundamentals for million people Kohara, J.
  3. ASHRAE Designing and controling an outside air economizer cycle Avery, G.
  4. ASHRAE Transaction v.98 Isothermal airflow characteristics in a ventilated room with a slot inlet opening Jin, Y.;Ogilvie, J. R.
  5. ASHRAE Transaction v.98 Full-scale experimental results on the mean and turbulent behavior of room ventilation flows Zhang, J. S.;Wu, G. J.;Christianson, L. L.
  6. ASHRAE Transaction v.97 Interior convective heat transfer in building with large ventilative flow rates Spitler, J. D.;Pedersen, C. O.;Fisher, D. E.
  7. ASHRAE Transaction v.98 Parametric analysis of a building space conditioned by a VAV system Zhang, Z.;Nelson, R. M.
  8. Modern control engineering(2nd Ed.) Ogata, K.
  9. ASHRAE Fundamentals of HVAC control systems Tayor, S. T.
  10. Basic Heat and Mass Transfer(1st Ed.) Mills, A. F.