Type III — Low-Pressure第 195 / 240 题
Excessive water in a low-pressure chiller can freeze and rupture tubes because low-pressure refrigerants:
a.Boil at low temperatures
b.Contain antifreeze additives
c.Boil at very high temperatures
d.Absorb water readily
解析
Because low-pressure refrigerants boil at low temperatures under vacuum, they can chill intruding water below its freezing point, and the expanding ice can rupture the chiller tubes. Water intrusion also causes acid and corrosion. This is one more reason to keep the machine tight and free of leaks.
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同考点相关题目
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