Experimental Study on the Effect of Inlet Pressure on Cooling Characteristics of Vortex Tube
To address the issue of thermal protection for high-temperature components in gas turbines,the cooling characteristics of a vortex tube were studied under different inlet pressures ranging from 0.20 to 0.65 MPa and cold air flow rates ranging from 0.17 to 0.89.The experimental results show that the actual temperature drop initially increases and then decreases with an increase in the cold flow rate under different inlet pressures.Additionally,the actual temperature drop increases with an increase in the inlet pressure at the same cold flow rate;the temperature efficiency also initially increases and then decreases as the cold flow rate increases under different inlet pressures,with the maximum efficiency observed at a cold flow rate of 0.5;the adiabatic efficiency is lowest at an inlet pressure of 0.20 MPa and does not change significantly with an increase in inlet pressure beyond 0.30 MPa;the refrigeration efficiency ini-tially increases and then decreases as the cold flow rate rises,with the highest efficiency observed at an inlet pressure of 0.30 or 0.40 MPa.
vortex tubeinlet pressurerefrigeration temperature effectcold flow rateexperimental measurement