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

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Optimal Design of Cogeneration System for General Facilities Considering LCC Analysis

LCC 분석을 고려한 일반 시설물에서 소형열병합발전의 최적 설계

  • Kang, Yul-Ho (School of Mechanical Engineering, Pusan National University) ;
  • Ku, Bon-Cheol (School of Mechanical Engineering, Pusan National University) ;
  • Hwang, Yu-Jin (School of Mechanical Engineering, Pusan National University) ;
  • Song, Jae-Do (School of Mechanical Engineering, Pusan National University) ;
  • Cheong, Seong-Ir (School of Mechanical Engineering, Pusan National University) ;
  • Lee, Jae-Keun (School of Mechanical Engineering, Pusan National University)
  • Published : 2009.08.10
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Abstract

Cogeneration system produces power as well as heat recovered from waste heat during power generation process. This system has higher energy efficiency than that of the power plant. In this study the optimal design for the cogeneration system with the increase of the capacity considering life cycle cost(LCC) analysis has been performed in the general facilities such as hotels and hospitals under the assumption of electricity cost of 95 won/kWh, the initial cost of cogeneration system of 1,500,000 won!kW and the value of 0.5${\sim}$1.0 in the ratio of heat to power. The optimal ratio of cogeneration capacity divided by average electricity load of facility was found out more than 0.5 in case of electricity cost with the increase of>30%, and the percentage of $CO_2$ reduction was about 9%. The most important factors in the economic analysis of cogeneration system was found out the electrity cost and the initial cost of cogeneration system. Also the ratio of heat to power at the value of>0.5 was not affected in the economy of cogeneration system, but was very important in the $CO_2$ reduction.

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References

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