Refrigeration apparatus and its operation method

Abstract

The invention relates to a refrigeration device without cool medium and the refrigerant method. According to the thermodynamic theory, as the temperature descends in working process by air depressurizing outward, appropriate part is chosen to improve air pressure and clear increased heat quantity by compressing in natural circumstance; high-pressure air in normal temperature is guided to drive the part do work so that the air becomes normal pressure air with low temperature by decompressing and cooling; finally, the air is guided into the circumstance which is wanted to cool so as to achieve cooling room effect efficiently. On the other hand, working quantity in decompressing process is recycled so as to decrease energy cost and increase thermal efficiency of the refrigeration device.

Description

technical field [0001] The invention relates to a refrigeration device that does not use refrigerant, but directly uses normal-pressure air to be compressed and boosted by a compressor, and then cools and dissipates heat in the natural environment; then releases energy (enthalpy) through a turbo expander to release pressure and expand , and the air is also cooled to the required temperature during the pressure drop process, so as to provide a new refrigeration device and implementation form of cold air. Background technique [0002] As we all know, commonly used refrigeration devices need to use refrigerant as a medium to move heat from a low-temperature place to a high-temperature place to achieve a cooling effect. Therefore, from the point of view of the thermal efficiency of the cooling system, it is necessary to choose a substance with good heat transfer efficiency and strong heat carrying capacity as the refrigerant. [0003] Substances that were commonly used as refri...

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Problems solved by technology

Such a cooling system is obviously very suitable for high-altitude and high-speed aircraft, but it cannot be directly applied to transportation vehicles on land or ships at sea: first, the air on land is at normal temperature, and the temperature rises after compression, which is not suitable It can be directly used as a cooling substance; in addition, the moving speed of vehicles on land or sea is quite limited, and the air cannot be effectively compressed by reducing the speed; finally, the environment to be cooled on land or sea is a normal pressure state, and Does not match compressed air pressure

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