Distributed power system of LNG power-driven vessel and working method

Abstract

The invention discloses a distributed power system of an LNG power-driven vessel and a control method. The system comprises an LNG vaporization system, a cold energy power generation loop, a heat recovery loop and a lithium bromide absorption cooling / heating loop. Cold energy produced by the LNG vaporization system during operation of the LNG power-driven vessel is recycled for LNG cold energy power generation, power is used as an electricity source for the LNG power-driven vessel, and the vessel cabin power supply demands are met; vaporized LNG is fed into a vessel main engine system combustion chamber for combustion, and power is provided for the vessel; and lots of waste heat generated after combustion is recycled and used as a heat source of an air conditioning system and the vaporization system, and the demands of heating and cooling of vessel cabins and LNG vaporization are met. Cold generated during LNG vaporization and heat released during combustion are used as a cold source and the heat source of the distributed power system, the demands for electricity, cold, cool and heat of the vessel cabins are met, and lots of vessel system investment is saved; and meanwhile, the energy utilization efficiency is improved, resources are saved, and the environment protection effect is achieved.

Description

technical field [0001] The invention relates to a distributed energy system and a control method of an LNG-powered ship. Specifically, in order to realize high-efficiency utilization of energy, the huge cooling capacity generated by LNG vaporization and the large amount of heat generated by combustion are used as the electricity, power, cooling, The cold and heat source of the thermal system improves energy utilization efficiency, saves resources, and at the same time protects the environment, and belongs to the field of distributed energy systems. Background technique [0002] In recent years, with the rapid development of the natural gas industry, the efficient utilization of natural gas has become a research hotspot. my country's energy policy and the proportion of primary energy determine that the use of natural gas will be an advantageous industry that will be vigorously developed in the next few years, and the distributed energy system is undoubtedly the focus. The ad...

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Problems solved by technology

There is an obvious error, and the effect of evaporative heat absorption and cooling cannot be realized when the refrigerant vapor enters the evaporator

In this system, the shut-off valves B and D are opened, and the shut-off valves A and C are closed. At this time, the refrigerant vapor does not flow through the condenser II and the evaporator, so as to achieve the purpose of neither cooling nor heating, and does not consider entering into the absorption The temperature of the coolant water in the device and the large amount of heat generated during the absorption process, so that the operation of the entire system must be flawed

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