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← ScienceWhich outcome increases when water coolant undergoes nucleate boiling in a heat exchanger?
A)Overall heat transfer coefficient✓
B)Coolant pump cavitation risk
C)Bulk fluid temperature stability
D)System thermal inertia reduction
💡 Explanation
The overall heat transfer coefficient rises during nucleate boiling, because bubbles form and depart from surfaces via the latent heat of vaporization, increasing agitation. So the heat removal rate from the surface dramatically rises rather than remaining constant; therefore, bulk fluid temperature changes do not strongly correlate.
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