Type III — Low-Pressure第 190 / 240 题
A machine room housing a low-pressure chiller should have a refrigerant monitor and ventilation mainly to protect against:
a.Excess humidity damaging the walls
b.Oxygen displacement and refrigerant exposure
c.Static electricity
d.Frozen condenser water
解析
Refrigerant vapor is heavier than air and can pool near the floor of a machine room, displacing oxygen and exposing workers. A refrigerant monitor and mechanical ventilation warn of a leak and clear the space. This is a standard safety requirement for chiller machine rooms.
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