lng ship thermal energy comprehensive utilization system
A heat energy and ship technology, applied in ship propulsion, loading system, hull ventilation/heating/cooling, etc., can solve the problem of ineffective use of cold energy, improve grade, improve desalination efficiency, and keep cabin temperature constant Effect
Active Publication Date: 2022-07-08
WUHAN UNIV OF TECH
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Problems solved by technology
However, in existing LNG ships, this part of cold energy is often not effectively utilized
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[0028] In order to have a clearer understanding of the technical features, objects and effects of the present invention, the specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
[0029] like figure 1 As shown, it is a comprehensive utilization system of LNG ship thermal energy provided by the present invention, including LNG engine 1, closed cycle heat exchanger 2, exhaust gas heat exchanger 3, tube bundle heat exchanger 5, CNG gas cylinder 4, LNG steam Bottle 6, cooling coil 7, low temperature cooling water tank 8, evaporative freshener 9, sea water pump 10. Among them, the LNG engine 1 provides thermal energy for the entire system, and the LNG ship thermal energy comprehensive utilization system mainly has four functional modules: 1) the self-constant pressure self-conversion module composed of the LNG cylinder 6, the tube bundle heat exchanger, and the CNG cylinder 4, It is used to realize the self-cons...
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The invention relates to an LNG ship thermal energy comprehensive utilization system, comprising an LNG engine, a closed cycle heat exchanger, an exhaust gas heat exchanger, a tube bundle heat exchanger, a CNG gas cylinder, an LNG gas cylinder, a heat dissipation coil and a low temperature cooling water tank. , Evaporative desalter, sea water pump, LNG engine provide heat energy for the whole system, LNG cylinder, tube bundle heat exchanger, CNG cylinder form a self-constant pressure self-conversion module; The temperature of the cabin is constant; the exhaust gas heat exchanger, the evaporative freshener, and the seawater pump form the freshening module; the closed-cycle heat exchanger and the seawater pump form the closed-cycle cooling module, and the low-temperature cooling water tank forms the open-cycle cooling module. To ensure good cooling of the LNG engine. The invention utilizes the heat energy generated by the operation of the LNG engine and the cold energy generated by the conversion of LNG to CNG, and realizes the self-pressurization and self-conversion of the system, the constant temperature of the cabin, the cooling of the engine, and the high-efficiency control by reasonably controlling the flow of the high- and low-temperature cooling water. Light function.
Description
technical field [0001] The invention relates to the technical field of thermal energy utilization, in particular to a thermal energy comprehensive utilization system of an LNG ship. Background technique [0002] As we all know, ships powered by fossil energy will cause serious emission pollution, so the development of green ships is imminent, and the application of clean energy power systems is the best solution. [0003] Liquefied natural gas (LNG), as a clean energy source, releases a large amount of cold energy when it is vaporized. When it is burned as a fuel, it basically does not produce polluting gas. However, in existing LNG ships, this part of cold energy is often not effectively utilized. The utilization of low-grade thermal energy and LNG cold energy can not only improve energy utilization efficiency, but also realize efficient development and utilization of new energy. Taking this as a starting point, this patent has invented a complete system for comprehensive...
Claims
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IPC IPC(8): B63H21/38B63J1/00B63J2/12F02M21/02
CPCB63H21/383B63J1/00B63J2/12F02M21/0215F02M21/0221B63J2002/125Y02T10/30
Inventor 朱汉华王锡涵张亚卿徐庚辉
Owner WUHAN UNIV OF TECH