Which phenomenon limits the maximum efficiency of a turbine operating across the triple point of water?

💡 Explanation

When turbines operate near the triple point, phase changes (water to steam to ice) and rapidly shifting pressures induce cavitation, because boiling and condensation cause vapor bubbles that later collapse violently, eroding the turbine blades. Impeller erosion causes efficiency loss, rather than condensation, lower blade strength or enthalpy change, which have secondary effects.

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