Search Sites

Journal of the Japan Institute of Energy Vol. 91 (2012), No. 6

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

Backnumber

  1. Vol. 103 (2024)

  2. Vol. 102 (2023)

  3. Vol. 101 (2022)

  4. Vol. 100 (2021)

  5. Vol. 99 (2020)

  6. Vol. 98 (2019)

  7. Vol. 97 (2018)

  8. Vol. 96 (2017)

  9. Vol. 95 (2016)

  10. Vol. 94 (2015)

  11. Vol. 93 (2014)

  12. Vol. 92 (2013)

  13. Vol. 91 (2012)

  14. Vol. 90 (2011)

  15. Vol. 89 (2010)

  16. Vol. 88 (2009)

  17. Vol. 87 (2008)

  18. Vol. 86 (2007)

  19. Vol. 85 (2006)

  20. Vol. 84 (2005)

  21. Vol. 83 (2004)

  22. Vol. 82 (2003)

  23. Vol. 81 (2002)

  24. Vol. 80 (2001)

  25. Vol. 79 (2000)

  26. Vol. 78 (1999)

  27. Vol. 77 (1998)

  28. Vol. 76 (1997)

  29. Vol. 75 (1996)

  30. Vol. 74 (1995)

  31. Vol. 73 (1994)

  32. Vol. 72 (1993)

  33. Vol. 71 (1992)

Journal of the Japan Institute of Energy Vol. 91 (2012), No. 6

Economic Assessment of Miscanthus Cultivation for Energy Purposes in the Czech Republic

Kamila VAVROVA, Jaroslav KNAPEK

pp. 485-494

Abstract

The article is focused on the issues of economic evaluation of Miscanthus cultivation on agricultural land in the Czech Republic. The methodology of economic assessment is based on the calculation of minimum production cost - minimum price of heat in EUR/GJ of heat in biomass. The minimum production cost represents the threshold of economic efficiency of production for the investor and its determination utilizes an economic model capturing all processes related to the cultivation of biomass for energy purposes. Miscanthus vegetation is considered for the production of biomass for direct combustion (a so-called spring harvest after the winter). Input data used in the model come from the experimentally collected data from the research plots of Miscanthus and from the market valuation of the individual activities using 2010 prices. The minimum price of Miscanthus varies between 3-12 EUR/GJ (2010 prices) depending on the yields and the date of harvest.

Readers Who Read This Article Also Read

Bookmark

Share it with SNS

Article Title

Economic Assessment of Miscanthus Cultivation for Energy Purposes in the Czech Republic

Preparation of CaO Catalyst from Calcined Limestone by Mechanical Grinding for Biodiesel Production

Hirochika MORIYASU, Kentaro KOSHI, Ayu SATO, Tadanori SUZUKI, Atsuko NAKAGAITO, Masato KOUZU

pp. 495-502

Abstract

For the purpose of studying manufacture of CaO catalyst for biodiesel production, a calcined limestone of commercial availability was ground in the presence of biodiesel and the resultant CaO-biodiesel mixture was employed for transesterification of vegetable oil with methanol. Biodiesel, which used as the grinding solvent, allowed surface oxide phase of CaO catalyst to be guarded against atmospheric CO2 and H2O, because the wet-grinding was much more effective in activating CaO catalyst than the atmospheric dry-grinding. Then, the wet-grinding was carried out with the industrial machines of media-agitating type for preparation of CaO catalyst consisting of fine particles. The prepared CaO catalyst was so fine that its average particle diameter reached 0.5 μm. The activity measuring tests provided data indicating that the transesterifying activity of CaO catalyst was enhanced by reducing its average particle diameter. Moreover, a small amount of water contained in biodiesel, which was used as the grinding solvent, seemed to enhances the transesterifying activity of CaO catalyst. Finally, we discussed a way to recycle CaO catalyst collected after the transesterification, for verifying that CaO catalyst consisting of fine particles is feasible for biodiesel production process.

Readers Who Read This Article Also Read

Bookmark

Share it with SNS

Article Title

Preparation of CaO Catalyst from Calcined Limestone by Mechanical Grinding for Biodiesel Production

Learning about Dye-Sensitized Solar Cells with Citizens

Yasufumi KAWAMURA, Tomoko TAYAMA, Akinori KODAMA

pp. 503-507

Abstract

It is important for citizens to get interested in science, energy, and environmental problems in order to be able to make scientifically sound judgments. For the purpose of this activity we have chosen the example of dye-sensitized solar cells. Although dye-sensitized solar cells are known as a handmade experiment, they still require high-technology such as nanotechnology and have a very high cost. We have invented dye-sensitized solar cells with materials that are closely used in everyday life. The efficiency of the dye-sensitized solar cells is lower, but it is possible for citizens to make handmade dye-sensitized solar cells by themselves. We expect this invention will generate increased interest in science, energy, and environmental problems and aid citizens in making more scientifically sound judgments.

Readers Who Read This Article Also Read

Bookmark

Share it with SNS

Article Title

Learning about Dye-Sensitized Solar Cells with Citizens

Article Access Ranking

15 Apr. (Last 30 Days)

You can use this feature after you logged into the site.
Please click the button below.

Advanced Search

Article Title

Author

Abstract

Journal Title

Year

Please enter the publication date
with Christian era
(4 digits).

Please enter your search criteria.