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ORC composite power generation system suitable for LNG hybrid power ship

A power generation system and hybrid power technology, which is applied in the direction of engine components, combustion engines, machines/engines, etc., can solve the problems of no utilization, etc., and achieve the effects of ensuring heat exchange efficiency, improving energy utilization, and reducing flue gas emission temperature

Active Publication Date: 2018-09-11
SHANGHAI MARITIME UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The evaporation pressure of this system is limited by seawater temperature and does not utilize the high grade heat source on LNG hybrid ships

Method used

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  • ORC composite power generation system suitable for LNG hybrid power ship
  • ORC composite power generation system suitable for LNG hybrid power ship
  • ORC composite power generation system suitable for LNG hybrid power ship

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Embodiment Construction

[0030] The technical solutions of the present invention will be further described below in conjunction with the drawings and embodiments.

[0031] Such as figure 1 As shown, an ORC composite power generation system suitable for LNG hybrid ships, the system includes: a primary ORC circuit (I), a secondary ORC circuit (II), an LNG / diesel dual-fuel main engine cylinder liner cooling water circuit (III ), flue gas cooling circuit (IV) and LNG gasification circuit (V).

[0032] The above-mentioned primary ORC loop (I) includes a primary condenser 7, a primary working fluid circulation pump 8, a primary evaporator 9, a primary turbine 10 and a primary generator 11. The above primary ORC circuit (I) uses the main engine liner cooling water as the heat source, and the circulating working medium passes through the primary evaporator 9 to absorb the heat in the LNG / diesel dual fuel main engine liner cooling water circuit (III) and turn it into high-temperature steam Then enter the pri...

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Abstract

The invention is aimed at providing an ORC composite power generation system suitable for an LNG hybrid power ship. The system is characterized in that the system comprises a first-grade ORC loop (I),a second-grade ORC loop (II), an LNG / diesel-oil dual fuel main engine cylinder sleeve water cooling loop (III), a smoke cooling loop (IV) and an LNG gasification loop (V); the first-grade ORC loop (I) takes cylinder sleeve cooling water as a heat source and takes LNG gasification cold energy as a cold source; the second-grade ORC loop takes smoke as a heat source and takes LNG gasification cold energy as a cold source; the first-grade ORC loop is connected with the LNG gasification loop through a first-grade condenser and connected with the LNG / diesel-oil dual fuel main engine cylinder sleevewater cooling loop through a first-grade evaporator; and the second-grade ORC loop is connected with the LNG gasification loop through a second-grade condenser and connected with the smoke cooling loop through a second-grade evaporator. The ORC composite power generation system suitable for the LNG hybrid power ship can effectively integrate heat sources and cold sources at different temperaturein the LNG hybrid power ship and helps avoid loss during a large temperature difference heat transfer process by creating an ORC composite system. Therefore, energy utilization rate of the LNG hybridpower ship is increased.

Description

【Technical field】 [0001] The invention belongs to the field of power engineering, and relates to a ship waste heat utilization system, in particular to an ORC composite power generation system suitable for LNG hybrid ships. 【Background technique】 [0002] At present, traditional fuels are widely used in shipping ships, and the proportion of fuels in the transportation costs of ships is getting higher and higher. The air pollution (especially PM2.5) caused by fuels has attracted widespread attention. The International Maritime Organization (IMO) pointed out that air pollution, noise pollution and oil pollution caused by shipping accounted for 4.3% of global pollution emissions, and by 2020, this proportion will rise to 12.9%. Searching for efficient and clean fuels is an inevitable trend for the sustainable development of the shipping industry. Liquefied natural gas (Liquid Nature Gas, LNG) is a colorless liquid with methane as the main component. Compared with diesel combu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02G5/04F01K23/00F01K13/00F01D15/10
CPCF01D15/10F01K13/00F01K23/00F02G5/04F02G2260/00Y02T10/12
Inventor 田镇章学来高文忠张远
Owner SHANGHAI MARITIME UNIVERSITY
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