Air separation equipment expander refrigeration is an important link in the design of the refrigeration system, it is mainly through the expansion process of the refrigerant to release the cold, so as to achieve the cooling effect.
Expansion refrigeration is mainly based on the principle that the internal energy of the gas in the expansion process is reduced and the external work output. Specifically, the turbine expander uses a certain pressure of gas in the machine for adiabatic expansion to do work externally, thereby consuming the internal energy of the gas itself, so that the gas itself is strongly cooled to achieve the purpose of refrigeration.
Turbine expander is one of the key components in the air separation equipment, it is through the expansion process of the refrigerant to produce cold to supplement the system cold loss. In air separation equipment, the turbine expander is usually used in conjunction with the compressor, heat exchanger and other equipment to achieve the separation and liquefaction of air. Turbine expanders are an important and indispensable part of air separation equipment.
The efficiency of the expander is an important indicator of its cooling performance. However, the actual cooling capacity of an expander is always smaller than the theoretical cooling capacity due to the existence of various losses (such as flow losses, friction blowing losses, internal leakage losses and exhaust losses, etc.). These losses mainly arise from factors such as energy dissipation and incomplete expansion of the gas during its flow in the expander.
In order to improve the efficiency of the expander, a variety of measures can be taken to reduce the losses, such as optimising the design of the expander, improving the manufacturing process and improving the working conditions.
