| Project/Area Number |
10680481
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
エネルギー学一般
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| Research Institution | Nagoya University |
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Principal Investigator |
HAYAKAWA Naoki Nagoya Univ., Graduate School of Eng., Assoc. Prof., 工学研究科, 助教授 (20228555)
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| Co-Investigator(Kenkyū-buntansha) |
KATO Takeyoshi Nagoya Univ., Center for Integrated Research in Science and Engineering Assistant Prof., 理工科学総合研究センター, 助手 (90283465)
SUZUOKI Yasuo Nagoya Univ., Center for Integrated Research in Science and Engineering Prof., 理工科学総合研究センター, 教授 (10115587)
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| Project Period (FY) |
1998 – 1999
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| Project Status |
Completed (Fiscal Year 1999)
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| Budget Amount *help |
¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 1999: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1998: ¥2,100,000 (Direct Cost: ¥2,100,000)
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| Keywords | global environment / energy system / waste energy / waste heat in industries / cascade use / energy-saving / exergy / economic incentive / ヒートカスケーディング / エネルギー輸送 / 炭素税 / エクセルギー税 / 報奨金 |
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| Research Abstract |
The purpose of this research is to investigate the potential of cascade use of waste heat among energy intensive industries : iron & steel, cement, paper & pulp and ethylene. Firstly, regional energy-saving potential by heat cascading was evaluated in the actual local industrial structure in Japan. Secondly, spatial constrains of industries were introduced in the conbinat model to facilitate the evaluation of regional energy-saving. Thirdly,from the viewpoints of cost-saving potential as well as the energy-saving potential, new economic incentives, referred to as "energy tax" and "energy-tax refund", were proposed in consideration of the quality of energy use. Main results obtained in this paper are summarized as follows :
1. Energy-saving potential by heat cascading highly depends on local industrial structure.
2. Cascading between high temperature waste heat supply of ethylene and middle & low temperature heat and electricity demand of paper & pulp can provide high energy-saving.
3. Oil consumption of steam boilers for the energy balance in a combinat can be reduced by more than about 90% by optimizing the industrial structure.
4. Heat transmission loss will give little influence to the energy-saving potential in the optimized combinat.
5. The conversion of waste energy into electricity is preferable, when considerable heat transmission loss is unavoidable.
6. Economic incentives are effective to increase the energy-saving potential in the combinat optimized from the viewpoint of cost-saving potential.
7. "Energy tax" in consideration of the quality of energy use promotes the introduction of heat cascading more economically than energy tax.
8. "Energy-tax refund" based on exergy efficiency is more practical than "Energy tax", which can accomplish almost the same cost and oil consumption optimized from the cost-saving viewpoint as those optimized from the energy-saving viewpoint.
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