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 Optimal Control Strategy of Air-Conditioning System with Slab Thermal Storage - The Difference by the Presence of Radiant Heat as a Criterion Factor -

슬래브축열의 최적제어방책에 관한 연구 -평가요소로 복사열의 고려 유무에 의한 차이-

  • Jung Jae-Hoon (Sejong-Lockheed Martin Aerospace Research Center, Sejong University) ;
  • Shin Young-Gy (Department of Mechanical Engineering, Sejong University)
  • 정재훈 (세종대학교 세종-록히드마틴 우주항공연구소) ;
  • 신영기 (세종대학교 기계공학과)
  • Published : 2006.04.01
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Abstract

In this paper, optimal control strategy of the air-conditioning system with slab thermal storage was investigated based on the optimal control theory. An optimal heat output to the plenum chamber and the air-conditioned room was determined based on two kinds of criterion functions. The first one requires small deviation in room air temperature from a set-point value and low energy consumption. It is shown that the optimized control is to store heat through the whole storage time and to increase storage rate gradually with time. As the second case, a criterion that both a deviation of operative temperature from a set-point temperature and the energy consumption should be minimized was adopted. The room air temperature was a little high and the cooling load during storage time was reduced, compared with the results when a criterion function considering only the room air temperature is used.

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References

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