Journal of the Japan Institute of Energy
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ONLINE ISSN: 1882-6121
PRINT ISSN: 0916-8753

Journal of the Japan Institute of Energy Vol. 82 (2003), No. 10

  • Study on Development of Waste Oil Combustion Burner for Energy Saving and Low-Pollution (I)

    pp. 772-779

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    DOI:10.3775/jie.82.772

    The recycling and effective use of waste materials are regarded as very important from a resources saving view point. The purpose of this study is to develop a waste oil combustion burner, which is able to atomize high-viscous waste oil using low energy and is able to reduce pollutant emissions. The internal mixing twin-fluid atomizer developed in this study mixed waste oil and atomizing air with a swirling flow in the mixing chamber. We investigated the effects of the kinematic viscosity of the liquid and the geo-metric shapes of the burner on spray characteristics. The results indicated that atomization of the high-viscous liquid jet was achieved with low energy of atomizing air.
  • Study on Development of Waste Oil Combustion Burner for Energy Saving and Low-Pollution (II)

    pp. 780-785

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    DOI:10.3775/jie.82.780

    Waste oil, such as waste engine oil, the leftover oil from tanker ships is usually of a high viscosity, low quality and includes water. The recycling and effective use of waste materials are regarded as very important from resources saving view point. The purpose of this study was to develop a waste oil com-bustion burner, which is able to atomize high viscous waste oil using low energy and is able to reduce pollutant emissions. The waste oil combustion burner consists of an internal mixing twin-fluid atomizer and a flame holder. We investigated the effects of geometric shapes of atomizer and flame holders on the combustion characteristics of waste oil. The results indicated that high effective and stable combustion of waste oil were achieved with low energy. Moreover, the flame is mainly luminous, blow-off of the flame takes place hardly, smoke emission is little and simultaneously reduction of NOx and CO exhaust emissions was achieved independent of the fuel mass flow rate under low atomizing air mass flow rate.
  • New Model Formula for Evaluation of Repercussions on Demand Sectors by Industrial Structure Changes

    pp. 786-792

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    DOI:10.3775/jie.82.786

    To evaluate the repercussion effect induced by the industrial structure changes, we propose a new model formula by introducing a demand-repercussion inverse-matrix which is different from the transposed matrix of Leontief one, but is rigorously formulated by applying the basics of the input-output table. The new formula is shown to be useful for the evaluation of repercussion on the demand sectors by exemplifying the specific calculations in which the added values in the sectors such as the metallic ores, pig iron and petroleum refinery products are varied. Introducing an artificial transformation for the amount of domestic product, the well-known model formula of a conventional price equilibrium model is derived and the meaning of the conventional model is discussed. Furthermore, we attempt to construct new input-output table which incorporates the repercussion effect of the variation of added value and we also present one of possible methods to adjust the whole industrial activities to conserve the gross domestic product.

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