Refrigeration & Air Conditioning Mechanic Red Seal · Question
A typical hermetic scroll compressor operates by:
Scroll compressors use two interleaving scrolls, where one remains stationary while the other orbits. This motion traps and compresses the refrigerant vapor pro
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Question: A typical hermetic scroll compressor operates by:
Answer options:
- Using pistons to compress refrigerant vapor ✅ Two interlocking spiral scrolls, one stationary and one orbiting, to compress refrigerant
- Rotating vanes to trap and compress refrigerant
- A centrifugal force to increase refrigerant velocity and pressure
Correct answer: Two interlocking spiral scrolls, one stationary and one orbiting, to compress refrigerant
Explanation: Scroll compressors use two interleaving scrolls, where one remains stationary while the other orbits. This motion traps and compresses the refrigerant vapor progressively towards the center.
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Question explanations
- Which of the following refrigerants is a hydrofluorocarbon (HFC) and has a high ozone depletion potential (ODP
- Which component is responsible for compressing the refrigerant vapour to a high pressure and temperature?
- According to the Canadian Electrical Code (CEC), what is the minimum required working clearance in front of el
- What is the main operating characteristic difference between a fixed orifice (capillary tube) and a Thermostat
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