Problems with centrifugal fans
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When the inlet pressure of the centrifugal fan is at atmospheric pressure and the rated current is applied under normal conditions, the outlet pressure of the fan is 2000 Pa. If the inlet pressure is 1000 Pa, can the outlet pressure still reach 3000 Pa?
When the inlet pressure of the centrifugal fan is at atmospheric pressure and the fan is operating at its rated current, the outlet pressure is 2000 Pa. If the inlet pressure is 1000 Pa, can the outlet pressure still reach 3000 Pa? ——The compression ratio is 1.02 for absolute pressure ranging from 1.0 to 1.02, and 1.0198 for absolute pressure ranging from 1.01 to 1.03. Yes!
It should be gauge pressure; absolute pressure of 1000 Pa represents negative pressure.
Don’t look at the compression ratio; look at the pressure difference! The total pressure difference remains unchanged!