LNG (Liquefied Natural Gas) vehicle and ship refrigeration micro-power air conditioning system

Abstract

The invention relates to the field of LNG air conditioners, and particularly provides an LNG vehicle and vessel refrigeration micro-power air conditioning system which comprises an LNG storage tank, the LNG storage tank is used for storing LNG, and a coolant cooling unit is arranged in the LNG storage tank; a main medium heat exchange unit and a coolant heating unit are arranged in the water bath type heat exchanger; the three-medium heat exchanger comprises a shell, a cold storage heat exchanger and a lower heat exchanger, the shell is communicated with a cold storage agent outlet pipeline of the LNG storage tank, a cold storage agent outlet pipeline of the three-medium heat exchanger and a cold storage agent circulating pump, a containing cavity is formed in the shell, a cold storage agent is contained in the containing cavity, and the cold storage heat exchanger and the lower heat exchanger are located in the containing cavity; the air conditioner refrigeration unit comprises a fan coil heat exchange unit and a secondary refrigerant circulating pump, and the fan coil heat exchange unit is communicated with the lower heat exchanger and the secondary refrigerant circulating pump; and the control unit is in control connection with the coolant circulating pump, the secondary refrigerant circulating pump and the fan. The micro-power-driven three-medium heat exchange scheme is adopted, the problem that refrigeration cannot be achieved when a power unit stops is solved, and the function of a parking air conditioner is achieved.

Description

technical field [0001] The invention relates to the technical field of LNG air-conditioning, in particular to a micro-power air-conditioning system for refrigeration of LNG vehicles and ships. Background technique [0002] With the in-depth transformation of my country's energy consumption structure, LNG, as a clean energy, has achieved considerable development and is widely used in various fields due to its advantages such as high calorific value, low price, low pollution after combustion, and environmental friendliness. As a fuel, LNG is safe, efficient, clean and non-polluting, which not only promotes the transformation of my country's energy structure, but also effectively reduces environmental pollution caused by combustion exhaust emissions. [0003] LNG will release a large amount of cold energy during the vaporization process before combustion, and usually this part of the cold energy will be directly discharged into the atmosphere, resulting in a waste of cold energ...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in order to solve the problems of freezing of the bridging agent and poor heat exchange and the inability to realize the parking air conditioning function in the LNG vehicle and ship refrigeration and air conditioning system in the prior art, the present invention provides a LNG vehicle and ship refrigeration micro Power air conditioning system to solve the above problems

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