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2021 | OriginalPaper | Buchkapitel

Analysis of Ship Main Engine Intake Air Cooling by Ejector Turbocompressor Chillers on Equatorial Voyages

verfasst von : Andrii Radchenko, Andrii Andreev, Dmytro Konovalov, Zhang Qiang, Luo Zewei

Erschienen in: Integrated Computer Technologies in Mechanical Engineering - 2020

Verlag: Springer International Publishing

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Abstract

The efficiency of cooling the inlet air of the main ship diesel engine by a refrigeration ejector chiller (ECh) transforming the exhaust gas heat into the cold was analyzed for equatorial voyages. Refrigeration ECh is used as the most simple in design and reliable. However, the efficiency of converting the exhaust heat to cold by ECh is low: their coefficients of performance (COP) are 0.2–0.3, that requires a lot of available heat. The turbocompressor chillers (TCCh) are characterized by high COP of about 0.7 and comparatively small dimensions, that is of very importance for ship application. But because of high technology of their manufacturing nowadays they are quite expansive. The effect of cooling engine cyclic air was determined compared with engine without its cooling, taking into account the changing climatic conditions during the routes of the vessel. It is shown, that because of comparatively low COP the cooling capacity of ECh, produced by using the available exhaust gas heat, is not sufficient to cool the inlet air to a potentially possible minimum temperature of 15 °C when operating the ship engine in tropical climates. Meantime, due to high efficiency of TCCh they consume less exhaust heat than needed for cooling inlet air to 15 °C. An innovative combined cooling system is proposed that enables to use the excessive heat of exhaust gas, remained after TCCh, for subcooling air from 15 °C to 10 °C in ECh with gaining additional fuel saving.

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Metadaten
Titel
Analysis of Ship Main Engine Intake Air Cooling by Ejector Turbocompressor Chillers on Equatorial Voyages
verfasst von
Andrii Radchenko
Andrii Andreev
Dmytro Konovalov
Zhang Qiang
Luo Zewei
Copyright-Jahr
2021
DOI
https://doi.org/10.1007/978-3-030-66717-7_41

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