• Title, Summary, Keyword: Hydrogen production cost

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Analysis of Hydrogen Production Cost by Production Method for Comparing with Economics of Nuclear Hydrogen (원자력 수소 경제성 비교를 위한 수소 생산 방법별 생산단가 분석)

  • Lim, Mee-Sook;Bang, Jin-Hwan;Yoon, Young-Seek
    • Transactions of the Korean hydrogen and new energy society
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    • v.17 no.2
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    • pp.218-226
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    • 2006
  • It can be obtained from hydrocarbon and water, specially production of hydrogen from natural gas is most commercial and economical process among the hydrogen production methods, and has been used widely. However, conventional hydrogen production methods are dependent on fossil fuel such as natural gas and coal, and it may be faced with problems such as exhaustion of fossil fuels, production of greenhouse gas and increase of feedstock price. Thermochemical hydrogen production by nuclear energy has potential to efficiently produce large quantities of hydrogen without producing greenhouse gases. However, nuclear hydrogen must be economical comparing with conventional hydrogen production method. Therefore, hydrogen production cost was analyzed and estimated for nuclear hydrogen as well as conventional hydrogen production such as natural gas reforming and coal gasification in various range.

Preliminary Cost Estimates for Nuclear Hydrogen System Based on High Temperature Electrolysis (고온전기분해 이용 원자력수소 예비타당성 연구)

  • Yang, Kyeongjin;Lee, Taehoon;Lee, Kiyoung
    • 한국신재생에너지학회:학술대회논문집
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    • pp.228.2-228.2
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    • 2010
  • In this work, the hydrogen production costs of the nuclear energy sources are estimated in the necessary input data on a Korean specific basis. G4-ECONS was appropriately modified to calculate the cost for hydrogen production of HTE process with Very High Temperature nuclear Reactor (VHTR) as a thermal energy source rather than the LUEC (Levelized Unit Electricity Cost). The general ground rules and assumptions follow G4-ECONS. Through a preliminary study of cost estimates, we wished to evaluate the economic potential for hydrogen produced from nuclear energy, and, in addition, to promptly estimate the hydrogen production costs for an updated input data for capital costs. The estimated costs presented in this paper show that hydrogen production by the VHTR could be competitive with current techniques of hydrogen production from fossil fuels if $CO_2$ capture and sequestration is required. Nuclear production of hydrogen would allow large-scale production of hydrogen at economic prices while avoiding the release of $CO_2$. Nuclear production of hydrogen could thus become the enabling technology for the hydrogen economy. The major factors that would affect the cost of hydrogen were also discussed.

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Economic Evaluation of Domestic Window Type Photoelectrochemical Hydrogen Production Utilizing Solar Cells (태양전지를 이용한 국내 Window Type 광전기화학 수소생산의 경제성 평가)

  • Gim, Bong-Jin;Kim, Jong-Wook
    • Transactions of the Korean hydrogen and new energy society
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    • v.21 no.6
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    • pp.595-603
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    • 2010
  • This paper deals with an economic evaluation of domestic window type photoelectrochemical hydrogen production utilizing solar cells. We make some sensitivity analysis of hydrogen production prices by changing the values of input factors such as the initial capital cost, the solar to hydrogen conversion efficiency, and the system duration time. The hydrogen production price of the window type photoelectrochemical system was estimated as 1,168,972 won/$kgH_2$. It is expected that hydrogen production cost can be reduced to 47,601 won/$kgH_2$ if the solar to hydrogen conversion efficiency is increased to 14%, the system duration time is increased to 20,000 hours, and the initial capital cost is decreased to 25% of the current level. We also evaluate the hydrogen production cost of the water electrolysis using the electricity produced by solar cells. The corresponding hydrogen production cost was estimated as 37,838 won/$kgH_2$. The photoelectrochemical hydrogen production is evaluated as uneconomical at this time, and we need to enhance the solar to hydrogen conversion efficiency and the system duration time as well as to reduce prices of the system facilities.

Preliminary cost estimation for large-scale nuclear hydrogen production based on SI process (초고온가스원자로 열원 SI 공정을 이용한 원자력수소생산시스템 비용 예비 분석)

  • Yang, Kyoung-Jin;Choi, Jae-Hyuk;Lee, Ki-Young;Lee, Tae-Hoon;Lee, Kyoung-Woo;Kim, Mann-Eung
    • 한국신재생에너지학회:학술대회논문집
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    • pp.723-726
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    • 2009
  • As a preliminary study of cost estimates for nuclear hydrogen systems, the hydrogen production costs of the nuclear energy sources benchmarking GT-MHR are estimated in the necessary input data on a Korean specific basis. G4-ECONS developed by EMWG of GIF in 2008 was appropriately modified to calculate the cost for hydrogen production of SI process with VHTR as a thermal energy source rather than the LUEC. The estimated costs presented in this paper show that hydrogen production by the VHTR could be competitive with current techniques of hydrogen production from fossil fuels if $CO_2$ capture and sequestration is required. Nuclear production of hydrogen would allow large-scale production of hydrogen at economic prices while avoiding the release of $CO_2$. Nuclear production of hydrogen could thus become the enabling technology for the hydrogen economy. The major factors that would affect the cost of hydrogen were also discussed.

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Economic Evaluation of Domestic Photoelectrochemical Hydrogen Production (국내 광전기화학 수소생산의 경제성 평가)

  • Gim, Bong-Jin;Kim, Jong-Wook
    • Transactions of the Korean hydrogen and new energy society
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    • v.21 no.1
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    • pp.64-71
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    • 2010
  • This paper deals with an economic evaluation of domestic immersing type photoelectrochemical hydrogen production. We also make some sensitivity analysis of hydrogen production prices by changing the values of input factors such as the initial capital cost, the solar to hydrogen conversion efficiency, and the system duration time. The hydrogen production price of the immersing type photoelectrochemical system was estimated as 8,264,324 won/$kgH_2$. It is expected that the production cost by photoelectrochemical hydrogen production can be reduced to 26,961 won/$kgH_2$ if the solar to hydrogen conversion efficiency is increased to 14%, the system duration time is increased to 20,000 hours, and the initial capital cost is decreased to 10% of the current level. The photoelectrochemical hydrogen production is evaluated as uneconomical at this time, and we need to enhance the solar to hydrogen conversion efficiency and the system duration time as well as to reduce prices of the system facilities.

Economic Evaluation of Hydrogen Production by Fermentation (발효에 의한 수소생산의 경제성 평가)

  • Gim, Bong-Jin;Kim, Jong-Wook;Park, Sang-Yong
    • Transactions of the Korean hydrogen and new energy society
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    • v.19 no.2
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    • pp.145-155
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    • 2008
  • This paper deals with an economic evaluation of hydrogen production by fermentation. We evaluate the economic feasibility of domestic hydrogen production by fermentation utilizing glucose and waste water sludge in terms of hydrogen production prices. In addition, we make some sensitivity analysis of hydrogen prices by changing the values of input factors such as the price of glucose, the capital cost of the hydrogen production system, and the hydrogen production yields. The estimated hydrogen prices of the two-step dark-light hydrogen production by fermentation utilizing glucose was $5,347won/kgH_2$, and the single-step hydrogen production by anaerobic fermentation utilizing waste water sludge was $4,255won/kgH_2$, respectively. It is expected that the hydrogen production price by anaerobic fermentation can be reduced if we produce methane or hydrogen utilizing by-products such as alcohols and organic acids, or the government imposes some legal regulations on the treatment of waste water sludge.

Modeling of Solar-Powered Hydrogen Production System using PSCAD/EMTDC (PSCAD/EMTDC를 이용한 수소제조용 태양광 발전 시스템의 모델링)

  • Lee Dong-Han;Park Minwon;Yu In-Keun
    • The Transactions of the Korean Institute of Electrical Engineers B
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    • v.55 no.2
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    • pp.116-121
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    • 2006
  • This paper presents an effective modeling and simulation scheme of solar-powered hydrogen production system (PV-SPE: Photovoltaic Solid Polymer Electrolyte). Existing Hydrogen production technologies can produce vast amounts of hydrogen from hydrocarbons but emit large amounts of carbon dioxide (CO2) into the atmosphere. Advanced hydrogen production methods need development. Renewable technologies such as solar and wind need further development for hydrogen production to be more cost-competitive from other resources. In this paper, authors have focused on a renewable technology to move one step further toward commercial readiness of solar-powered hydrogen production system. Software (PSCAD/EMTDC) based model of PV-SPE system is studied for an effective simulation of hydrogen production system. Using the simulation results, an actual PV-SPE system is implemented to verify the simulation results by comparing them with actual values obtained from the data acquisition system.

Economic Feasibility Study for Commercial Production of Bio-hydrogen (해양바이오수소개발 사업의 상업생산을 위한 예비경제성평가)

  • Park, Se-Hun;Yoo, Young-Don;Kang, Sung Gyun
    • Ocean and Polar Research
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    • v.38 no.3
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    • pp.225-234
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    • 2016
  • This project sought to conduct an economic feasibility study regarding the commercial production of bio-hydrogen by the marine hyperthermophilic archaeon, Thermococcus onnurineus NA1 using carbon monoxide-containing industrial off-gas. We carried out the economic evaluation of the bio-hydrogen production process using the raw material of steel mill by-product gas. The process parameter was as follows: $H_2$ production rate was 5.6 L/L/h; the conversion of carbon monoxide was 60.7%. This project established an evaluation criterion for about 10,000 tonne/year. Inflation factors were considered as 3%. The operating costs were recalculated based on prices in 2014. The total investment required for development was covered 30% by capital and 70% by a loan. The operation cost for the 0.5-year test and integration, and the cost for the first three months in the 50% production period were considered as the working capital in the cost estimation. The costs required for the rental of office space, facilities, and other related costs from the construction through to full-scale production periods were considered as continuing expenses. Materials, energy, waste disposal and other charges were considered as the operating cost of the development system. Depreciation, tax, maintenance and repair, insurance, labor, interest rate charges, general and administrative costs, lubrication and miscellaneous expenses were also calculated. The hydrogen price was set at US$ 4.15/kg for the economic evaluation. As a result, the process was considered to be economical with the payback period of 6.3 years, NPV of 18 billion Won and IRR of 26.7%.

Technology Trend for Water Electrolysis Hydrogen Production by the Patent Analysis (특허분석에 의한 수전해 수소제조 기술동향)

  • Hwang, Gab-Jin;Kang, Kyung-Seok;Han, Hye-Jung;Kim, Jong-Wook
    • Transactions of the Korean hydrogen and new energy society
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    • v.18 no.1
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    • pp.95-108
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    • 2007
  • There are several methods for the hydrogen production such as steam reforming of natural gas, photocatalytic method, biological method, electrolysis and thermochemical method, etc. These days it has been widely studying for the hydrogen production method having low hydrogen production cost and high efficiency. In this paper, patents in the hydrogen production by water electrolysis were gathered and analyzed. The search range was limited in the open patents of USA(US), European Union(EP), Japan(JP), and Korea(KR) from 1996 to 2005. Patents were gathered by using key-words searching and filtered by filtering criteria. The trends of the patents was analyzed by the years, countries, companies, and technologies.

Patent Trend for Hydrogen Production Technology by Steam Reforming of Natural Gas (천연가스의 수증기 개질에 의한 수소 제조 기술 특허동향)

  • Seo, Dong-Ju;Yoon, Wang-Lai;Kang, Kyung-Seok;Kim, Jong-Wook
    • Transactions of the Korean hydrogen and new energy society
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    • v.18 no.4
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    • pp.464-480
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    • 2007
  • There are several methods for the hydrogen production such as steam reforming of natural gas, photochemical method, biological method, electrolysis and thermochemical method, etc. These days it has been widely studied for the hydrogen production method having low hydrogen production cost and high efficiency. In this paper, patents in the hydrogen production by steam reforming of natural gas were gathered and analyzed. The search range was limited in the open patents of USA(US), European Union(EP), Japan(JP), and Korea(KR) from 1996 to 2006. Patents were gathered by using key-words searching and extracted by filtering criteria. The trends of the patents was analyzed by the years, countries, companies, and technologies.