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← ScienceWhich risk increases substantially when a mixed refrigerant's Reynolds number exceeds a compressor design limit?
A)Stable thermal conduction dominates
B)Harmonic cavitation is more disruptive
C)Lubricant foaming induces bearing wear✓
D)Isentropic expansion attains equilibrium easier
💡 Explanation
Lubricant foaming increases because turbulent flow from the Reynolds number limit enhances refrigerant mixing and vaporization; therefore, enhanced foaming results, rather than stable conduction, as boundary layer separation increases wear issues.
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