Some questions about Aspen simulations of compressors
Thread Content
When using Aspen to simulate a compressor, 3 kilograms of steam are fed in, and 4 kilograms of steam are produced; the corresponding temperature is 162.9°C. If 1 kilogram of steam is fed in, the temperature of the 4 kilograms of steam produced is 246.7°C. I would like to ask: shouldn’t the temperature of water at a pressure of 4 kilograms be 143°C?
The fact that 4 kilograms of pressure corresponds to 143°C refers to saturated steam; what comes out of the compressor is superheated steam. Different input pressures result in different compression ratios, and thus different degrees of compression, which is why the same pressure can lead to different temperatures
Where is the compression ratio? I can’t see it
The ratio of the pressure after compression to the pressure before compression is an approximate value of the compression ratio
You mean saturated steam, right? Compressed steam must be superheated steam
When setting the compressor parameters, it’s necessary to enter the load, right?
No need; just enter the inlet and outlet pressures, and the power value will be displayed
What kind of steam compressor is this?
ASME isentropic model simulated by Aspen
The effect is the same; the compressor has 2 degrees of freedom, and these two parameters are necessary