Which risk increases when cavitation stalls an evaporator feed pump in a large-scale ammonia refrigeration system?

💡 Explanation

Compressor bearing overheating becomes more severe because refrigerant vaporization ceases locally with loss of pump flow via vapor lock, and latent heat transport becomes almost nonexistent; therefore bearings are damaged rather than being cooled, because the lubrication breaks down first near pump outlet when latent heat decreases.

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