Problems with centrifugal compressors
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I have a question that I would like the experts here to discuss: if the purity of the gas entering a centrifugal compressor is not sufficient, will this cause the pressure at the compressor’s outlet to increase or decrease? By the way, everyone please share your reasons; I’d like to thank you all first!
Reply to 1# CrayonBe careful: Your statement that the purity is not sufficient is too vague. Does it really are the purity that causes the molecular weight to be low or high? At a constant rotation speed, the outlet pressure is related to the molecular weight – as the molecular weight increases, the outlet pressure rises, and as the molecular weight decreases, the outlet pressure falls
If the purity of the gas entering a centrifugal compressor is insufficient, will this cause the pressure at the compressor outlet to increase or decrease? The purity is not clearly defined; if the compressor power remains constant, an increase in gas density will result in a decrease in outlet pressure ； Conversely, it increases.
There is another prerequisite: the inlet temperature remains constant
Reply to 4# FLYTOINTER: Yes, you’re absolutely right; temperature is related to molecular density!
Reply to 3# Man Tian Fei Xue, sir: it’s the decrease in the density of the gas. Please explain it more clearly.
Reply to 6# Crayon, be careful. I thought you understood physics; it became obvious with just one click. The compressor does work on the gas, and ultimately, power is directly related to the mass flow rate of the gas. Do you understand?
Reply to 7# Man Tian Fei Xue: Thank you, I now understand. A colleague made a bet with me, and I made sure they lost in a way that they would accept it without any objections.