Refrigeration & Air Conditioning Mechanic Red Seal · Question
What is the primary advantage of using a variable frequency drive (VFD) with a refrigeration compressor motor?
VFDs allow the compressor motor speed to vary, matching cooling load demands precisely, leading to significant energy savings and better temperature control.
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Question: What is the primary advantage of using a variable frequency drive (VFD) with a refrigeration compressor motor?
Answer options: ✅ Energy savings through speed control and improved capacity modulation.
- Elimination of the need for refrigerant oil.
- Increased starting torque without increased current.
- Simplified wiring and reduced installation costs.
Correct answer: Energy savings through speed control and improved capacity modulation.
Explanation: VFDs allow the compressor motor speed to vary, matching cooling load demands precisely, leading to significant energy savings and better temperature control.
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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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