Type III — Low-Pressure第 197 / 240 题
A high-efficiency purge unit on a chiller is often equipped with a purge-rate log because a rising rate:
a.Shows the refrigerant is too cold
b.Means the chiller is running more efficiently
c.Confirms the rupture disk is working
d.Indicates a growing air or refrigerant leak needing repair
解析
Tracking the purge rate turns the purge unit into a leak-detection tool; a climbing rate signals that more air is entering the vacuum side, so the leak should be located and repaired. Ignoring it wastes refrigerant and energy. Modern purge controls log and alarm on excessive purging.
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