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 Characteristics of an Absorption Chiller for Variable Cooling Water Flow Rate at Partial Load Conditions

흡수식 냉온수기의 부분부하에 따른 냉각수 변유량시 성능특성에 관한 연구

  • 박찬우 (LG전선(주) 기계연구소) ;
  • 조현철 (경희대학교 대학원 기계공학과) ;
  • 강용태 (경희대학교 기계산업시스템공학부)
  • Published : 2004.01.01
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Abstract

In general, an absorption chiller or heat pump is operated under the constant cooling water flow rate condition even though the system works with a partial load. The objective of this paper is to study the effect of the cooling water flow rates and the temperature of cooling water on the system performance to find the energy saving methode for the partial load operation of the double effect $H_2O$/LiBr absorption chiller. It is found that the performance of the system is sensitive to the temperature of cooling water than the cooling water flow rate, so the decrease of the performance due to reducing the cooling water flow rate can be overcome with the reduction of the cooling water temperature by 1$^{\circ}C$. The flow rate of the cooling water flow rate ranges from 50％ to 100％ of the flow rate at normal conditions with a partial load. It is also found that the operation cost of the cooling water pump and the cooling tower can be reduced by 23％.

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References

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