A kind of lng refrigerated vehicle which recycles heat energy and cold energy

Abstract

The invention relates to an LNG refrigerator car capable of recycling heat energy and cold energy. The LNG refrigerator car comprises a turbocharger, a phase change heat storage device, a second heatexchanger and a natural gas supply unit. The turbocharger is used for air feeding and supercharging of an engine, the phase change heat storage device is used for recovering exhaust waste heat of theengine, the second heat exchanger is used for providing cold energy for a refrigerator car compartment, a natural gas supply unit is used for driving a first expansion machine to rotate so as to drivethe turbocharger to rotate and also used for driving a second expansion machine to rotate to generate electricity for the refrigerator can, and the cold quantity in the liquid natural gas in the natural gas supply unit is recycled through the second heat exchanger and then is heated through the phase change heat storage device to form gaseous natural gas which respectively enters the first expansion machine and / or the second expansion machine and then enters the engine to provide fuel for the engine. LNG cold energy and the exhaust waste heat of the engine are recycled, and the LNG refrigerator car has the characteristics of energy conservation, environmental protection and reduction of the operating cost of the LNG refrigerator car.

Description

technical field [0001] The invention belongs to an LNG refrigerated vehicle for refrigerated transportation of goods, in particular to an LNG refrigerated vehicle for recycling heat energy and cold energy. Background technique [0002] With the improvement of people's quality of life, the requirements for the quality of fresh fruits and vegetables and medicines are getting higher and higher, which greatly promotes the development of refrigerated logistics. The refrigeration system of traditional refrigerated trucks provides energy for the refrigeration unit through the fuel consumed by the engine, and drives the refrigeration unit to work. The refrigeration process consumes a large amount of chemical energy of petroleum. The high cost of fuel oil leads to high transportation costs, and it is a non-renewable fossil energy. At the same time, the emission of automobile exhaust is increased, which aggravates environmental pollution. Therefore, under the general trend of energy s...

AI Technical Summary

Problems solved by technology

Liquid LNG will release a large amount of cold energy before it enters the engine for combustion, and this part of the cold energy will be wasted during the operation of the LNG refrigerated truck

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