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

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Energy and Economic Analysis of Heat Recovery Cogeneration Loop Integrated with Heat Pump System by Detailed Building Energy Simulation

건물 에너지 상세 해석을 통한 소형 열병합 발전 및 히트펌프 복합 시스템의 경제성 분석

  • Seo, Dong-Hyun (Department of Civil, Environmental and Architectural Engineering, University Colorado at Boulder) ;
  • Koh, Jae-Yoon (Research Laboratory, LG Electronics) ;
  • Park, Yool (Department of Building System Engineering, Dongeui University)
  • Published : 2009.02.10
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Abstract

Up until recently, the energy and the economic analysis of a cogeneration system have been implemented by a manual calculation that is based on monthly thermal loads of buildings. In this study, a cogeneration system modeling validation with a detail building energy simulation, eQUEST, for a building energy and cost prediction has been implemented. By analyzing the hourly building electricity and thermal loads, it enables users to decide proper cogeneration system capacity and to estimate more accurate building energy consumption. eQUEST also verified the energy analysis when the heat pump system is integrated with the cogeneration system. The mechanical system configuration benefits from the high efficiency heat pump system while avoiding the building electricity demand increase. Economic analysis such as LCC (Life Cycle Cost) method is carried out to verify economical benefits of the system by applying actual utility rates of KEPCO(Korea Electricity Power COmpany) and KOGAS(KOrea GAS company).

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References

  1. Definition of cogeneration and electricity tariff from www.kepco.co.kr
  2. Hwang, K. I., 2004, A Study on the Energy Saving Effects of the Cogeneration System considering its Operating and the Building Energy Consuming Characteristics, Journal of the Architectural Institute of Korea, Vol.20, No. 4, pp. 253-260
  3. Kim, K. S., Lee, S. H., Hong, K. P. and Won, Y. J., 2007, Analysis for the Economic efficiency of District Heating and Gas Engine Co-generation System comparing with Central Heating System, Proceeding of the SAREK 2007 Winter Annual Conference, pp. 459-465
  4. Choi, J. H., Kim, J. Y. and Hong, W. H., 2006, A Study on the Economic Evaluation with the Cogeneration System Operating Pattern of Apartments in Daegu, Journal of the Architectural Institute of Korea, Vol. 22, NO. 9, pp. 299-307
  5. Kim, Y. I., 2008, The Economic Comparison of EHP and GHP for Medium Capacity Airconditioning, Air-conditioning and Refrigeration Engineering Vol. 20, No. 3, pp. 267-273
  6. Song, S. Y., Kim Y. I. and Song, K. D., 2008, Analysis of Factors Influencing upon the Cost and Cost Prediction based on the Actual Cost Data for Building Mechanical System, Journal of the Architectural Institute of Korea, Vol. 24, No. 2, pp. 295-303
  7. LBNL, Hirsch J. J. and Associates. DOE-2.2, 2006, Building Energy Use and Cost Analysis Program. Lawrence Berkeley National Laboratory, Simulation Research Group, Berkeley, CA
  8. LNG tariff from www.kogas.or.kr
  9. Intrest rate from www.kosis.kr
  10. Inflation rate from www.keei.re.kr
  11. Cost estimation from www.kpi.or.kr
  12. Kim, C. M., Kim, Y. G., Hwang, Y. J. and Im, K. S., 1998, An experimental study for developing the frost/defrost algorithm in inverter-driven heat pump, Proceeding of the SAREK 1998 Summer Annual Conference, pp. 369-374