Journal of Arid Land Studies
Online ISSN : 2189-1761
Print ISSN : 0917-6985
ISSN-L : 0917-6985
Special issue: Proceedings of ICAL 2 (Refereed Papers (Poster Presentation))
Conceptual Design of Modernization and Estimation of Energy Efficiency Improvement for Coal Boilers in Heat Supply Stations in Kyrgyz
Tomoyasu HIRANOToshikazu TSUMURAFumiaki INAGAKIYoshiko KAWABATA
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2015 Volume 25 Issue 3 Pages 245-248

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Abstract
By installation of the latest model of fluidized bed boiler, the energy consumption efficiency is expected to become more than double. In Kyrgyz Republic, the boilers around 20 t/h are prevalent, and replacement demands of 9 cans are expected in the heat supply stations at four locations. Based on properties and varieties of coal, the Fluidized bed system would be suitable. The analysis of the coal-ash samples after combustion indicated that the unburned carbon in ash was 45% on average. Accordingly, the conversion of coal by combustion was determined to be 40%. The replacement of the existing 20 t/h boilers by fluidized bed boiler would reduce the CO2 emission of approximately 2,000 tons per year. Moreover, enhancing coal-fired heat supply station contributes to the prevention of the water related conflicts in the Aral Sea Basin area.
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© 2015 The Japanese Association for Arid Land Studies
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