Proceedings of the SAREK Conference (대한설비공학회:학술대회논문집)

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

Performance Analysis of Micro-turbine CHP System with Absorption Chiller

흡수식 칠러를 장착한 마이크로터빈 구동 열병합시스템의 성능 해석

  • Yun, Rin (Department of Mechanical Engineering, Hanbat National University) ;
  • Han, Seung-Dong (Department of Mechanical Engineering, Hanbat National University)
  • 윤린 (한밭대학교 기계공학과) ;
  • 한승동 (한밭대학교 기계공학과)
  • Published : 2007.11.30
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Abstract

The performance of microturbine CHP system equipped with an absorption chiller was analyzed by modelling of a microturbine and an absorption chiller. The microturbine having recuperator was simulated by the Brayton cycle model. The mass flow rate and available heat energy of the exhaust gas from the microtubune were simulated, and this results were utilized as input values for the generator of the absorption chiller. The absorption chiller is a single-effect air cooled type having solution heat exchanger. When heat input to the generator increased, the heat transfer rate and UA of the heat exchangers of the absorption chiller proportionally increased. Besides, the COP of the absorption chiller increased with increase of the heat input to the generator under the sufficient size of the evaporator condition. When the capacity of the CHP system increased from 30 to 60 kW, the mass flow rate of the LiBr for the absorption chiller increased by two times, and UA values for evaporator and condenser were increased by 3.9 and 3.4 times, respectively, under the same COP condition.

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