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양방향수전해 기반 수소제조용 초고온스팀 생산시스템의 엑서지 분석
한단비,박성룡,조종표,백영순,HAN, DANBEE,PARK, SENGRYONG,CHO, CHONGPYO,BAEK, YOUNGSOON 한국수소및신에너지학회 2018 한국수소 및 신에너지학회논문집 Vol.29 No.3
Hydrogen can be produced by reforming reaction of natural gas (NG) and biogas, or by water electrolysis. In this study, hydrogen production through water-electrolysis needs superheated steam above $700^{\circ}C$ for high efficiency. The production method of hydrogen like this was recommended for the 4-type processes for superheated steam ($700^{\circ}C$, 3 atm) by Bio-SRF combustion furnace. The 4-type processes to produce superheated steam at $700^{\circ}C$ from the heat source of SRF combustion furnace was simulated using PRO II. The optimum process was selected through exergy analysis. The difference of process 1 and 2 is to the order of depressure and heating process to change $180^{\circ}C$ and 7 atm to $700^{\circ}C$ and 3 atm. Process 3 and 4 is to utilize 25% of steam to generate superheated steam and remaining to use for the power generation by steam generator.