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Analysis of the Economy of Scale for Domestic Steam Methane Reforming Hydrogen Refueling Stations Utilizing the Scale Factor

Scale Factor를 이용한 국내 천연가스 개질식 수소충전소의 규모의 경제 분석

  • GIM, BONGJIN (Department of Industrial Engineering, Dankook University) ;
  • YOON, WANG LAI (Hydrogen Laboratory, Korea Institute of Energy Research) ;
  • SEO, DONG JOO (Hydrogen Laboratory, Korea Institute of Energy Research)
  • 김봉진 (단국대학교 산업공학과) ;
  • 윤왕래 (한국에너지기술연구원 수소연구실) ;
  • 서동주 (한국에너지기술연구원 수소연구실)
  • Received : 2019.05.22
  • Accepted : 2019.06.30
  • Published : 2019.06.30

Abstract

The aim of this study is to evaluate the economic feasibility of domestic on-site steam methane reforming (SMR) hydrogen refueling stations. We evaluated the levelized cost of hydrogen (LCOH) for the SMR hydrogen refueling stations, which have production capacities of 100 kg/day (SMR 100), 200 kg/day (SMR 200), and 500 kg/day (SMR 500) utilizing the scale factor. The main results indicated that the LCOH of SMR 100, SMR 200, and SMR 500 were 14,367 won/kg, 11,122 won/kg, and 8,157 won/kg, if the utilizations of hydrogen stations were 70%. These results imply that the production capacity of the domestic SMR hydrogen station should be greater than 500 kg/day to compete with other hydrogen stations when we consider the current sale price of hydrogen at the hydrogen stations.

Keywords

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Fig. 1. System of a SMR hydrogen station

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Fig. 2. Cash flow diagram of a HRS

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Fig. 3. LCOH (won/kg) of SMR hydrogen stations

Table 1. Initial investment cost of SMR 100

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Table 2. Initial investment costs of SMR 200 and SMR 500

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Table 3. Key station criteria for SMR hydrogen stations

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Table 4. Price data for calculating annual operating cost

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Table 5. Economic analysis data for calculating LCOH

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Table 6. Summary of the LCOH for SMR hydrogen stations

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Table 7. LCOH of SMR 500 for different utilizations

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Table 8. LCOH of SMR 500 for different initial investments

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Table 9. LCOH of SMR 500 for different prices of city gas

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Table 10. LCOH of SMR 500 for different discount rates

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