Which risk increases when a centrifugal pump supplying chilled water to a data center runs at very low speed?

💡 Explanation

Centrifugal pumps operating far from their Best Efficiency Point experience recirculation at the impeller inlet; this causes the local pressure to drop which leads to vapor bubble formation (cavitation). The collapse of those bubbles generates pitting damage to the impeller itself, rather than other modes because pressure is the dominant variable.

• Which consequence occurs when excessive cylinder pressure overcomes boundary lubrication in a piston?
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• Which limitation arises when increasing the pre-stress force beyond design limits in post-tensioned concrete beams?
• Which mechanical failure increases sensitivity to embrittlement in investment-cast turbine blades subjected to high-temperature gradients?