LOW-SPEED ENGINE INLET AIR COOLING BY EJECTOR CHILLER WHEN OPERATING THE SHIP IN TROPICAL CONDITIONS
The efficiency of air cooling at the inlet of the main low-speed engine turbocharger of a transport vessel during operation in tropical climatic conditions on the Shanghai-Singapore-Shanghai route was analyzed. A feature of the tropical climate is the high relative humidity, respectively, moisture c...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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National Aerospace University «Kharkiv Aviation Institute»
2020-01-01
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| Series: | Авіаційно-космічна техніка та технологія |
| Subjects: | |
| Online Access: | http://nti.khai.edu/ojs/index.php/aktt/article/view/1074 |
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| author | Роман Миколайович Радченко Максим Андрійович Пирисунько Нiн Чен Баочен Хан |
| author_facet | Роман Миколайович Радченко Максим Андрійович Пирисунько Нiн Чен Баочен Хан |
| author_sort | Роман Миколайович Радченко |
| collection | DOAJ |
| description | The efficiency of air cooling at the inlet of the main low-speed engine turbocharger of a transport vessel during operation in tropical climatic conditions on the Shanghai-Singapore-Shanghai route was analyzed. A feature of the tropical climate is the high relative humidity, respectively, moisture content at its simultaneously high temperatures. The cooling of the air at the inlet of a low-speed engine with an ejector chiller by transforming the waste heat of exhaust gases into cold was studied. The ejector chiller is used as the most simple and reliable in operation. However, the efficiency of the transformation of heat into cold by ejector chillers is low - low thermal coefficients.
A design solution of the system for cooling air at the inlet of the ship's main engine using the heat of the exhaust gases by an ejector chiller is proposed and analyzed. The effect of using the heat of the exhaust gases to cool the air at the engine inlet is analyzed taking into account the variable climatic conditions during the voyage of the vessel. It is shown that because of the insufficiently high efficiency of transforming the waste heat of the exhaust gases by an ejector chiller (low thermal coefficients), the obtained cooling capacity is not sufficient for cooling the air at the inlet of the turbocompressor during operation of a marine engine in tropical climatic conditions. Therefore, the possibility of use in the ejector chiller of additional heat of charge air, which is removed by cooling water, is also considered. It is shown that the use of the heat of exhaust gases and charge air for cooling the air at the engine inlet in an ejector chiller makes it possible to double decrease the air temperature at the inlet of the main engine by 20-30 °C when the vessel operates in tropical climatic conditions on a voyage lines Shanghai-Singapore-Shanghai. This, in turn, provides an almost twice fuel consumption reduction in compared with its reduction in the case when the ejector chiller uses only the heat of the exhaust gases. |
| first_indexed | 2024-03-12T09:10:06Z |
| format | Article |
| id | doaj.art-a1b3155ebc7f457287e9dac86e29d106 |
| institution | Directory Open Access Journal |
| issn | 1727-7337 2663-2217 |
| language | English |
| last_indexed | 2024-03-12T09:10:06Z |
| publishDate | 2020-01-01 |
| publisher | National Aerospace University «Kharkiv Aviation Institute» |
| record_format | Article |
| series | Авіаційно-космічна техніка та технологія |
| spelling | doaj.art-a1b3155ebc7f457287e9dac86e29d1062023-09-02T15:02:21ZengNational Aerospace University «Kharkiv Aviation Institute»Авіаційно-космічна техніка та технологія1727-73372663-22172020-01-0101172110.32620/aktt.2020.1.031098LOW-SPEED ENGINE INLET AIR COOLING BY EJECTOR CHILLER WHEN OPERATING THE SHIP IN TROPICAL CONDITIONSРоман Миколайович Радченко0Максим Андрійович Пирисунько1Нiн Чен2Баочен Хан3Національний університет кораблебудування ім. адмірала Макарова, МиколаївХерсонська філія Національного університету кораблебудування ім. адмірала Макарова, ХерсонЦзяньсуньський університет науки і технології, ЦзеньцзяньНаціональний університет кораблебудування ім. адмірала Макарова, МиколаївThe efficiency of air cooling at the inlet of the main low-speed engine turbocharger of a transport vessel during operation in tropical climatic conditions on the Shanghai-Singapore-Shanghai route was analyzed. A feature of the tropical climate is the high relative humidity, respectively, moisture content at its simultaneously high temperatures. The cooling of the air at the inlet of a low-speed engine with an ejector chiller by transforming the waste heat of exhaust gases into cold was studied. The ejector chiller is used as the most simple and reliable in operation. However, the efficiency of the transformation of heat into cold by ejector chillers is low - low thermal coefficients. A design solution of the system for cooling air at the inlet of the ship's main engine using the heat of the exhaust gases by an ejector chiller is proposed and analyzed. The effect of using the heat of the exhaust gases to cool the air at the engine inlet is analyzed taking into account the variable climatic conditions during the voyage of the vessel. It is shown that because of the insufficiently high efficiency of transforming the waste heat of the exhaust gases by an ejector chiller (low thermal coefficients), the obtained cooling capacity is not sufficient for cooling the air at the inlet of the turbocompressor during operation of a marine engine in tropical climatic conditions. Therefore, the possibility of use in the ejector chiller of additional heat of charge air, which is removed by cooling water, is also considered. It is shown that the use of the heat of exhaust gases and charge air for cooling the air at the engine inlet in an ejector chiller makes it possible to double decrease the air temperature at the inlet of the main engine by 20-30 °C when the vessel operates in tropical climatic conditions on a voyage lines Shanghai-Singapore-Shanghai. This, in turn, provides an almost twice fuel consumption reduction in compared with its reduction in the case when the ejector chiller uses only the heat of the exhaust gases.http://nti.khai.edu/ojs/index.php/aktt/article/view/1074охолодженняповітряежекторна холодильна машинавипускні гази |
| spellingShingle | Роман Миколайович Радченко Максим Андрійович Пирисунько Нiн Чен Баочен Хан LOW-SPEED ENGINE INLET AIR COOLING BY EJECTOR CHILLER WHEN OPERATING THE SHIP IN TROPICAL CONDITIONS Авіаційно-космічна техніка та технологія охолодження повітря ежекторна холодильна машина випускні гази |
| title | LOW-SPEED ENGINE INLET AIR COOLING BY EJECTOR CHILLER WHEN OPERATING THE SHIP IN TROPICAL CONDITIONS |
| title_full | LOW-SPEED ENGINE INLET AIR COOLING BY EJECTOR CHILLER WHEN OPERATING THE SHIP IN TROPICAL CONDITIONS |
| title_fullStr | LOW-SPEED ENGINE INLET AIR COOLING BY EJECTOR CHILLER WHEN OPERATING THE SHIP IN TROPICAL CONDITIONS |
| title_full_unstemmed | LOW-SPEED ENGINE INLET AIR COOLING BY EJECTOR CHILLER WHEN OPERATING THE SHIP IN TROPICAL CONDITIONS |
| title_short | LOW-SPEED ENGINE INLET AIR COOLING BY EJECTOR CHILLER WHEN OPERATING THE SHIP IN TROPICAL CONDITIONS |
| title_sort | low speed engine inlet air cooling by ejector chiller when operating the ship in tropical conditions |
| topic | охолодження повітря ежекторна холодильна машина випускні гази |
| url | http://nti.khai.edu/ojs/index.php/aktt/article/view/1074 |
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