进口压力对涡流管冷却特性影响的实验研究

为了解决燃气轮机高温部件热防护问题，采用实验研究涡流管在不同进口压力（0.20~0.65 MPa）和冷气流率（0.17~0.89）下的冷却特性。实验结果表明：实际温降，在不同进口压力下随着冷气流率的增加先增大后减小，在相同冷气流率下随着进口压力的增大而增大；温度〖JP2〗效率，在不同进口压力下随着冷气流率的增大先增大后减小，在冷气流率等于0.5时达到最大值；绝热效率，在进口压力等于0.20 MPa时最小，在大于0.30 MPa时随着进口压力的增加变化不大；制冷效率，随冷气流率的增加会先增加后减小，进口压力等于0.30和0.40 MPa时制冷效率最高。

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 initially 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.