Regarding the surge flow rate
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At a certain speed, there exists a limit flow rate – the surge flow rate; when the flow rate is below this value, the compressor cannot operate stably and surging occurs. I’ve seen some materials state that \"when the rotational speed is constant, the higher the intake pressure, the greater the surge flow rate.\" How should this statement be understood? 1. When the rotational speed is constant, that is, when the power of the prime mover is constant, pressure is inversely proportional to flow rate ； 2. For the same flow channel, according to Bernoulli’s equation, a higher flow rate should correspond to a lower pressure. Please give some advice, thanks! This post was last edited by ypff on 2009-2-15 21:38.]
You might have misunderstood; the information states that the intake pressure is high, and that’s the key point. You are referring to the situation where the intake pressure is stable; it’s two different things
At a certain speed, there exists a limit flow rate – the surge flow rate; when the flow rate is below this value, the compressor cannot operate stably and surging occurs.