Low-pressure chillers most commonly use which type of compressor?
a.Centrifugal
b.Rotary vane
c.Scroll
d.Reciprocating hermetic
解析
Low-pressure chillers typically use centrifugal compressors, which move large volumes of low-pressure refrigerant vapor to cool commercial buildings. Reciprocating, rotary, and scroll compressors are more common in higher-pressure and smaller systems. Recognizing the centrifugal chiller helps identify Type III equipment.
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同考点相关题目
- Non-condensable gases such as air that collect in a low-pressure chiller will:
- Compared with older designs, a high-efficiency purge unit is desirable because it:
- A technician wants to warm the refrigerant in a low-pressure chiller to speed recovery. Which method is acceptable?
- If a low-pressure chiller's high-pressure limit control trips during operation, the technician should first:
- When recovering from a low-pressure chiller with a large charge, the most efficient practice is to:
- The rupture disk on a low-pressure appliance should be:
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