MAIN MARINE ENGINE INLET AIR COOLING BY ABSORPTION LITHIUM BROMIDE CHILLER IN TROPICAL CONDITIONS
The efficiency of air cooling at the inlet of the main low speed engine of a transport vessel during operation in tropical climatic conditions on the Shanghai-Karachi-Shanghai route was analyzed. The peculiarity of the tropical climate is the high relative humidity of the air at the same time its hi...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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National Aerospace University «Kharkiv Aviation Institute»
2020-04-01
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| Series: | Авіаційно-космічна техніка та технологія |
| Subjects: | |
| Online Access: | http://nti.khai.edu/ojs/index.php/aktt/article/view/1097 |
| _version_ | 1797712107081302016 |
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| author | Роман Миколайович Радченко Дмитро Вікторович Коновалов Максим Андрійович Пирисунько Чжан Цян Луо Зевей |
| author_facet | Роман Миколайович Радченко Дмитро Вікторович Коновалов Максим Андрійович Пирисунько Чжан Цян Луо Зевей |
| author_sort | Роман Миколайович Радченко |
| collection | DOAJ |
| description | The efficiency of air cooling at the inlet of the main low speed engine of a transport vessel during operation in tropical climatic conditions on the Shanghai-Karachi-Shanghai route was analyzed. The peculiarity of the tropical climate is the high relative humidity of the air at the same time its high temperatures, and hence the increased thermal load on the cooling system, which requires efficient transformation of the waste heat into the cold in the case of the use of waste heat recovery refrigeration machines. The cooling of the air at the inlet of the low speed engine by absorption lithium bromide chillers, which are characterized by high efficiency of transformation of waste heat into cold – by high coefficients of performance, is investigated. A schematic-construction solution of the air cooling system at the inlet of the ship's main engine using the heat of exhaust gases by an absorption chiller is proposed and analyzed. With this the cooling potential of the inlet air cooling from the current ambient air temperature to 15 ° C and the corresponding heat consumption for the operation of the adsorption chiller, on the one hand, was compared with the available exhaust gas heat potential, on the other hand. The effect of using the exhaust gas heat to cool the air at the inlet of the engine has been analyzed taking into account the changing climatic conditions during the voyage. Enhancement of fuel efficiency of the ship's engine by reducing the inlet air temperature were evaluated by current values of the reduction in specific and total fuel consumption. It is shown that due to the high efficiency of heat conversion in absorption chillers (high coefficients of performance 0.7…0.8), a significant amount of excessive exhaust gas heat over the heat required to cool the ambient air at the inlet of the engine to 15 ° C, which reaches almost half of the available exhaust gas heat during the Shanghai-Karachi-Shanghai route. This reveals the possibility of additional cooling a scavenge air too with almost double fuel economy due to the cooling of all cycle air of the low speed engine, including the air at the inlet. |
| first_indexed | 2024-03-12T07:16:54Z |
| format | Article |
| id | doaj.art-254575f81d3740c5ab539638d6fa41b4 |
| institution | Directory Open Access Journal |
| issn | 1727-7337 2663-2217 |
| language | English |
| last_indexed | 2024-03-12T07:16:54Z |
| publishDate | 2020-04-01 |
| publisher | National Aerospace University «Kharkiv Aviation Institute» |
| record_format | Article |
| series | Авіаційно-космічна техніка та технологія |
| spelling | doaj.art-254575f81d3740c5ab539638d6fa41b42023-09-02T22:41:29ZengNational Aerospace University «Kharkiv Aviation Institute»Авіаційно-космічна техніка та технологія1727-73372663-22172020-04-0102182310.32620/aktt.2020.2.031117MAIN MARINE ENGINE INLET AIR COOLING BY ABSORPTION LITHIUM BROMIDE CHILLER IN TROPICAL CONDITIONSРоман Миколайович Радченко0Дмитро Вікторович Коновалов1Максим Андрійович Пирисунько2Чжан Цян3Луо Зевей4Національний університет кораблебудування ім. адмірала Макарова, МиколаївХерсонська філія Національного університету кораблебудування ім. адмірала Макарова, ХерсонХерсонська філія Національного університету кораблебудування ім. адмірала Макарова, ХерсонЦзяньсуньський університет науки і технології, ЦзеньцзяньНаціонального університету кораблебудування ім. адмірала Макарова, Миколаїв, Цзяньсуньський університет науки і технології, ЦзеньцзяньThe efficiency of air cooling at the inlet of the main low speed engine of a transport vessel during operation in tropical climatic conditions on the Shanghai-Karachi-Shanghai route was analyzed. The peculiarity of the tropical climate is the high relative humidity of the air at the same time its high temperatures, and hence the increased thermal load on the cooling system, which requires efficient transformation of the waste heat into the cold in the case of the use of waste heat recovery refrigeration machines. The cooling of the air at the inlet of the low speed engine by absorption lithium bromide chillers, which are characterized by high efficiency of transformation of waste heat into cold – by high coefficients of performance, is investigated. A schematic-construction solution of the air cooling system at the inlet of the ship's main engine using the heat of exhaust gases by an absorption chiller is proposed and analyzed. With this the cooling potential of the inlet air cooling from the current ambient air temperature to 15 ° C and the corresponding heat consumption for the operation of the adsorption chiller, on the one hand, was compared with the available exhaust gas heat potential, on the other hand. The effect of using the exhaust gas heat to cool the air at the inlet of the engine has been analyzed taking into account the changing climatic conditions during the voyage. Enhancement of fuel efficiency of the ship's engine by reducing the inlet air temperature were evaluated by current values of the reduction in specific and total fuel consumption. It is shown that due to the high efficiency of heat conversion in absorption chillers (high coefficients of performance 0.7…0.8), a significant amount of excessive exhaust gas heat over the heat required to cool the ambient air at the inlet of the engine to 15 ° C, which reaches almost half of the available exhaust gas heat during the Shanghai-Karachi-Shanghai route. This reveals the possibility of additional cooling a scavenge air too with almost double fuel economy due to the cooling of all cycle air of the low speed engine, including the air at the inlet.http://nti.khai.edu/ojs/index.php/aktt/article/view/1097охолодженняповітрявхіддвигунабсорбційна холодильна машинавипускні гази |
| spellingShingle | Роман Миколайович Радченко Дмитро Вікторович Коновалов Максим Андрійович Пирисунько Чжан Цян Луо Зевей MAIN MARINE ENGINE INLET AIR COOLING BY ABSORPTION LITHIUM BROMIDE CHILLER IN TROPICAL CONDITIONS Авіаційно-космічна техніка та технологія охолодження повітря вхід двигун абсорбційна холодильна машина випускні гази |
| title | MAIN MARINE ENGINE INLET AIR COOLING BY ABSORPTION LITHIUM BROMIDE CHILLER IN TROPICAL CONDITIONS |
| title_full | MAIN MARINE ENGINE INLET AIR COOLING BY ABSORPTION LITHIUM BROMIDE CHILLER IN TROPICAL CONDITIONS |
| title_fullStr | MAIN MARINE ENGINE INLET AIR COOLING BY ABSORPTION LITHIUM BROMIDE CHILLER IN TROPICAL CONDITIONS |
| title_full_unstemmed | MAIN MARINE ENGINE INLET AIR COOLING BY ABSORPTION LITHIUM BROMIDE CHILLER IN TROPICAL CONDITIONS |
| title_short | MAIN MARINE ENGINE INLET AIR COOLING BY ABSORPTION LITHIUM BROMIDE CHILLER IN TROPICAL CONDITIONS |
| title_sort | main marine engine inlet air cooling by absorption lithium bromide chiller in tropical conditions |
| topic | охолодження повітря вхід двигун абсорбційна холодильна машина випускні гази |
| url | http://nti.khai.edu/ojs/index.php/aktt/article/view/1097 |
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