Why are fixed-speed centrifugal compressors, which use inlet valves for throttling control, more energy-efficient than those with control valves at the outlet?
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For fixed-speed centrifugal compressors that use inlet valves for throttling control with constant outlet pressure, why are they more energy-efficient than those equipped with regulating valves at the outlet?
Export pressure is required by the process, while inlet regulation is used to control the amount of material drawn in; they are different concepts