LNG refrigerated car roof radiant cooling system

Abstract

The invention provides an LNG refrigerated car roof radiant cooling system. The system comprises an LNG steel cylinder, the LNG steel cylinder is connected with a control valve, the control valve is connected with one way of a three-way valve, one way of the three-way valve is connected with a cool end inlet of a heat exchanger, the other way of the three-way valve is connected with a bypass pipe,a cool end outlet of the heat exchanger and the bypass pipe are combined and connected with a heater, a hot end of the heat exchanger is a refrigerant transport pipeline, the heat exchanger is disposed in a radiating structure, the heater is connected to an engine, and the control valve and the three-way valve are electrically connected to a controller. The system utilizes LNG gasification latentheat refrigeration to replace traditional compressor mechanical refrigeration, reduces the load of a refrigeration system, simplifies the system structure, eliminates the noise pollution caused by mechanical refrigeration, and utilizes roof radiant refrigeration to make the temperature distribution of a refrigerated car compartment more uniform, the energy saving effect is remarkable, and the system is simple in structure, economical and practical, has good social benefits, and is convenient to popularize and use in a refrigerated car.

Description

technical field [0001] The invention relates to a refrigeration device, in particular to a radiation cooling system for the roof plate of an LNG refrigerated vehicle. Background technique [0002] With the steady development of the economy and the continuous improvement of people's living standards, people have new demands for the freshness and diversity of fresh food. On this basis, it promotes the rapid development of the low-temperature cold storage chain, and the demand for refrigerated vehicles increases rapidly. A refrigerated vehicle refers specifically to a special-purpose vehicle that has a compartment with an insulated structure and can keep the temperature inside the compartment below 0°C. It has transportation characteristics such as less upside-down handling, flexible maneuvering, rapid arrival, and home service. Since the middle and late 1970s, my country has begun to produce refrigerated vehicles. The annual output was 700 in 1981, about 6,000 in 1985, and a...

AI Technical Summary

Problems solved by technology

[0007] The invention proposes a radiation cooling system for the roof plate of LNG refrigerated veh

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