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← ScienceWhich mechanism causes the slower response exhibited in a thermostatic radiator valve when transitioning from mostly-closed to fully-open?
A)Increased convective heat transfer
B)Decreased bimetallic strip deformation
C)Latent heat of vaporization✓
D)Reduced radiative heat absorption
💡 Explanation
The slower response relates to the latent heat of vaporization; fluid near the actuator must undergo a phase transition to deliver the set-point force because this endothermic process absorbs heat, therefore slowing expansion, rather than other heat transfer modes that respond faster.
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