静電サイクロン方式集塵による舶用ディーゼル機関のPM低減 - 機関の種類による低減効果の比較と舶用２ストローク主機関の実船試験

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  • PM Reduction for Marine Diesel Engines with Electrostatic Cyclone Precipitator - Effect of Engine Types on Reducing PM and Onboard Test of 2-Stroke Main Propulsion Engines
  • セイデンサイクロン ホウシキ シュウジン ニ ヨル ハクヨウ ディーゼル キカン ノ PM テイゲン : キカン ノ シュルイ ニ ヨル テイゲン コウカ ノ ヒカク ト ハクヨウ 2 ストロークシュ キカン ノ ジッセン シケン

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<p>  In this study, the authors investigated particulate matter (PM) collection efficiency of an electrostatic-cyclone precipitator (ESP-cyclone) by conducting bench tests and onboard measurements of PM emissions with three diesel engines. A small sized high-speed 4-Stroke diesel was used for a bench test and two types of low-speed 2-Stroke marine diesels were utilized for another bench test and onboard PM measurements aboard a ship of 2,703 gross-tonnage. In order to study PM collection efficiency of the ESP-cyclone, PM concentrations in exhaust gas were measured upstream and downstream of the ESP-cyclone with a partial flow dilution tunnel system. Experimental results showed that the PM collection efficiency was as high as 60-80% with the ESP-cyclone collecting not only insoluble organic fraction (ISF), but also soluble organic fraction (SOF). The ESP-cyclone realizes stable PM reduction from the diesel engine on the actual ship.</p>

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