Cold chain vehicle waste heat synergistic mechanical-pump-free compression-injection refrigeration circulation system and method

Abstract

The invention belongs to the technical field of refrigeration circulation, and particularly discloses a cold chain vehicle waste heat synergistic mechanical-pump-free compression-injection refrigeration circulation system and method. The system comprises a steam compression refrigeration circulation module and a mechanical-pump-free injection refrigeration circulation module; the steam compressionrefrigeration circulation module comprises a compressor, a condenser, a throttling device and an evaporator, and is used for completing steam compression refrigeration circulation; and the mechanical-pump-free injection refrigeration circulation module comprises a generator, an ejector and a pressurization ejector, and is used for completing mechanical-pump-free injection refrigeration circulation. According to the system and method, on the basis of conventional steam compression refrigeration circulation of a cold chain vehicle, the mechanical-pump-free injection refrigeration circulation using waste heat of tail gas of an engine as the energy source is arranged, the energy is completely derived from the waste heat of the tail gas, any other external energy source supplies does not needso that the refrigerating capacity of the system can be greatly improved without loss of energy such as fuel oil, and then the energy utilization efficiency and the cruising ability of the cold chainvehicle are improved.

Description

technical field [0001] The invention belongs to the technical field of refrigerating cycles, and more specifically relates to a compression-injection refrigerating cycle system and method for waste heat enhancement of a cold chain vehicle without a mechanical pump. Background technique [0002] In the modern logistics industry, in order to meet the service needs of the high-end logistics industry, the cold chain transportation system focuses on realizing the whole-process frozen and fresh-keeping transportation service of the transported products from the production base to the sales customer, and the key core of the cold chain transportation technology The technology is the on-board refrigeration system, and the key core technology of the on-board refrigeration system is refrigeration technology. In the current cold chain vehicle-mounted refrigeration system, the conventional vapor compression refrigeration cycle is usually used, and the cold chain vehicle-mounted refrigera...

AI Technical Summary

Problems solved by technology

Although the two forms are different, the direct source of energy consumption of the refrigeration system is electrical energy or mechanical energy as a high-grade energy source. The electrical energy comes from the generator of the cold chain vehicle, and the mechanical energy comes from the consumption of the shaft power of the engine. The fuel of the cold chain vehicle is used for energy supply, which inevitably leads to the refrigeration system of the cold chain vehicle competing with the engine of the cold chain vehicle for fuel, which leads to a decrease in its battery life and reduces the overall transportation efficiency of the cold chain vehicle

[0003] During the normal driving process of the cold chain vehicle, the exhaust gas discharged by the engine carries a large amount of available heat, which is called waste heat. The heat energy carried by the engine exhaust gas is equivalent to about 50% of the total energy provided by the fuel, and this part of waste heat Most of the low-grade heat energy carried is directly discharged into the atmosphere without being fully utilized, resulting in a decrease in energy utilization efficiency

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