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Journal of the Japan Institute of Energy Vol. 102 (2023), No. 1

ISIJ International
belloff
ONLINE ISSN: 1882-6121
PRINT ISSN: 0916-8753
Publisher: The Japan Institute of Energy

Backnumber

  1. Vol. 103 (2024)

    1. No.11
    2. No.10
    3. No.9
    4. No.8
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  2. Vol. 102 (2023)

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  3. Vol. 101 (2022)

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  4. Vol. 100 (2021)

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  5. Vol. 99 (2020)

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  6. Vol. 98 (2019)

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  7. Vol. 97 (2018)

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  8. Vol. 96 (2017)

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  9. Vol. 95 (2016)

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  10. Vol. 94 (2015)

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  11. Vol. 93 (2014)

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  12. Vol. 92 (2013)

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  13. Vol. 91 (2012)

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  14. Vol. 90 (2011)

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  15. Vol. 89 (2010)

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  16. Vol. 88 (2009)

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  17. Vol. 87 (2008)

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  18. Vol. 86 (2007)

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  19. Vol. 85 (2006)

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  20. Vol. 84 (2005)

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  21. Vol. 83 (2004)

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  22. Vol. 82 (2003)

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  23. Vol. 81 (2002)

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  24. Vol. 80 (2001)

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  25. Vol. 79 (2000)

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  26. Vol. 78 (1999)

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  27. Vol. 77 (1998)

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  28. Vol. 76 (1997)

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  29. Vol. 75 (1996)

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  30. Vol. 74 (1995)

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  31. Vol. 73 (1994)

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  32. Vol. 72 (1993)

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  33. Vol. 71 (1992)

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Journal of the Japan Institute of Energy Vol. 102 (2023), No. 1

Development of a Regional Input-output Model for Environmental and Socio-economic Assessment of Renewable Energy

Yue MORIIZUMI, Hiroki HONDO

pp. 1-18

DOI:

10.3775/jie.102.1

Abstract

This study develops a Renewable Energy Focused Input-Output model for Region (REFIO-Region) to assess the environmental and socio-economic effects of the introduction of renewable energy technologies in a region. The development of REFIO-Region consists of the following two-step process. First, input-output tables for 1,741 municipalities in Japan (intra-regional tables) is created using national and 47 prefectural input-output tables as well as various statistics such as the economic census for business activity. Second, the 1,741 municipalities are classified into two arbitrary regions to form an inter-regional table, and sectors related to renewable energy technologies are combined to construct an inter-regional input-output model, that is, REFIO-Region. It represents in detail the industrial structure of Japan’s 1,741 municipalities and the technological structure of 12 renewable energy technologies, enabling in-depth analysis of the effects of the introduction of these technologies at the regional level. Using REFIO-Region, a case study is conducted on the regional economic effects of introducing wind power generation in the Kumamoto Collaborative Core City Region, Japan, which consists of 18 municipalities. The results of the case study reflect the characteristics of both the wind power generation and the region in which it is introduced, indicating the usefulness of the model.

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Analysis of Productivity Improvement and Dust Amount Decrease in Electric Arc Furnace

Kazuyoshi YAMAGUCHI

pp. 19-27

DOI:

10.3775/jie.102.19

Abstract

The countermeasures of productivity improvement and dust amount decrease in the electric arc furnace had been analyzed based on the various scrap melting experiment results with 10 ton capacity furnace and another literatures and papers. With the C source addition and oxygen blowing, and the heat supplies of metal oxidation and C combustion, the electric power decreased and the operation time was shortened. The operation time is almost determined by the oxygen blowing amount. The larger the gas generation amount by C source combustion (bubble generation amount), the greater the dust generation amount. The dust generation amount is almost determined by the Zn and Fe amounts in the dust. The compounds of Zn and Fe in the dust were configured with abundant zinc ferrite, small amount of hematite and zinc oxide. The elements that transfer to the dust by bubble-bursting are not only Fe but also Zn as for the new dust generation mechanism clarification. Based on these analyzed results, the operation analysis was performed by use of the current actual operation data. The dust generation amount was reduced with the cut of C source and oxygen blowing and the electric power and CO2 generation amount were also reduced.

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