Journal of the Japan Institute of Energy
New Arrival Alert : OFF

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

Log in / Sign up
ONLINE ISSN: 1882-6121
PRINT ISSN: 0916-8753

Journal of the Japan Institute of Energy Vol. 93 (2014), No. 3

  • Estimating the Manufacturing Cost to Large-scale Power Generate Polymer based Organic Photovoltaics

    pp. 271-277

    Bookmark

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

    Log in / Sign Up

    DOI:10.3775/jie.93.271

    Organic photovoltaics (OPVs) are next-generation photovoltaics. The industrialization of low-cost photovoltaics will be achieved by employing OPVs as polymer materials fabricated without a vacuum process roll-to-roll (R2R) process because of the low running cost and high throughput of the R2R process. Recently, some estimates for the manufacturing cost of OPVs have been reported. However, most of the reports predicted a high cost. We estimated the cost of fabricating a newly designed low-cost module by an all-wet process. In addition, we discovered a technical problem regarding the industrialization of OPVs.
  • LCA of Small-scale Ethanol Production System from High-yield Rice

    pp. 278-291

    Bookmark

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

    Log in / Sign Up

    DOI:10.3775/jie.93.278

    This study carried out LCA of the project which cultivates high-yield rice in an abundant land and produces ethanol from the harvested rice. It is effective for high-yield rice cultivation to incorporate the nitrogen fixation crops in rotational system, and to adopt a dehumidifying drying system. GHG emission of cultivation system with these strategies is 20.7 g-CO2eq/MJ. Ethanol production system generates steam with the dual fuel boiler using the gas by rice husk gasification and fuel oil A. when gasification is operated stably, fuel oil A consumption decrease and minimum GHG discharge is 62.7 g-CO2eq/MJ. The amount of GHG emission of cultivation and ethanol production system and a gasoline are 83.4 g-CO2eq/MJ and 81.7 g-CO2eq/MJ, respectively. It is required for the GHG emission reduction to improve the thermal energy conversion efficiency of the steam production which has only been 53%. GHG emission of methane from paddy field is estimated to be 16.5-72.1 g-CO2eq/MJ by the difference in soil species and existence organic fertilization. The GHG emission by methane from paddy fields has a high impact on research object system.
  • Numerical Evaluation of People's Behavior Changes caused by Energy Environmental Education

    pp. 292-296

    Bookmark

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

    Log in / Sign Up

    DOI:10.3775/jie.93.292

    Energy environmental education is an important matter to establish a sustainable society. Technology innovations or social improvements must be supported by education to achieve the most performance. Numerical evaluation of people's behavior changes caused by education is important to analyze the effects of education and to improve educational methods. In this study the mothers were chosen as monitors for the behavior analyses. Monitor's significant behavior changes as power consumption reductions after the energy environmental workshop were obtained from the daily energy consumption data collection by themselves. The changes are analyzed numerically using the residuals of multi-regression analyses; the explanatory variables are weather data and activity time in the house of whole monitor families. The maximum percentage decrease of power consumption after workshop was 22%. In this study it is found that detailed data collections of lives make it possible to evaluate numerically the behavioral changes of the people.
  • Study on the Densification of Biomass Containing Radioactive Substances: Densification Characteristics of Woody Leaves and Branches

    pp. 297-300

    Bookmark

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

    Log in / Sign Up

    DOI:10.3775/jie.93.297

    To decontaminate radioactive substances on agricultural land and in forests, densification experiments using comminution and pelletization on a laboratory were carried out for woody branches and leaves as primal study. Consequently, densification ratios were ranged from 3.5 to 8.6 by comminution and 9.5 to 27 by pelletization. By mixing the woody portion with leaves and branches, the mixed pellet showed sufficient durability as well as reduced radioactive cesium concentration without decreasing the feed rate. A densification test for herbaceous and woody biomass on a larger scale (200 kg/h of feedstock) is underway at Fukushima prefecture, to design the practical plant.
  • Energy Analysis of Cassava Bioethanol Production in the Philippines

    pp. 301-309

    Bookmark

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

    Log in / Sign Up

    DOI:10.3775/jie.93.301

    An energy balance analysis was performed to determine the energy efficiency of cassava bioethanol production in the Philippines. The analysis was based on a commercial scale production system and covered four segments in cassava bioethanol production: cassava production and cultivation, cassava processing, ethanol conversion and transportation. The values used for the analysis were sourced from local and foreign references. Results showed that a large portion of the total input energy for cassava bioethanol production comes from fossil fuels and used in the ethanol conversion process while human effort is concentrated to cassava production and cultivation. A net energy gain (NEG) of 9.27 MJ/L ethanol and a net energy ratio (NER) of 1.78 were obtained in the energy performance estimation. These values indicate that cassava bioethanol production in the Philippines can be energy efficient.

Article Access Ranking

17 Apr. (Last 30 Days)

  1. Three-dimensional Investigations of Non-metallic Inclusions in Stainless Steels before and after Machining ISIJ International Advance Publication
  2. Perspective toward Long-term Global Goal for Carbon Dioxide Mitigation in Steel Industry Tetsu-to-Hagané Vol.105(2019), No.6
  3. Influence of Ore Assimilation and Pore Formation during Sintering on Reduction Behavior of Sintered Ores Tetsu-to-Hagané Vol.107(2021), No.3
  4. Steam Reforming of Methane on Sponge Iron: Influence of Gas Composition on Reaction Rate ISIJ International Vol.61(2020), No.1
  5. Numerical Simulation of Flow, Heat, Solidification, Solute Transfer and Electromagnetic Field for Vertical Mold and Curved Mold of Billet ISIJ International Vol.61(2021), No.3
  6. Structural and Mechanical Characterizations of Top Dross in a Molten Zinc Bath ISIJ International Vol.61(2021), No.3
  7. Dissolution Behavior of Mg and Ca from Dolomite Refractory into Al-killed Molten Steel ISIJ International Advance Publication
  8. Effect of Rare Earth Ce on the Morphology and Distribution of Al2O3 Inclusions in High Strength IF Steel Containing Phosphorus during Continuous Casting and Rolling Process ISIJ International Vol.61(2021), No.3
  9. Deformation Behavior of Longitudinal Surface Flaws in Flat Rolling of Steel Wire ISIJ International Advance Publication
  10. Preface to the Special Issue on “Toward Suppression of Hydrogen Absorption and Hydrogen Embrittlement for Steels” ISIJ International Vol.61(2021), No.4

Search Phrase Ranking

17 Apr. (Last 30 Days)

  1. blast furnace
  2. coke oven gas injection
  3. tetsu-to-hagané
  4. blast furnace permeability
  5. blast furnace productivity
  6. slag
  7. ultrasonic inclusion
  8. continuous casting of electrical steel
  9. deoxygen in liquid iron
  10. electrical steel and continuous casting