Refrigeration & Air Conditioning Mechanic Red Seal · Question
Which component in a vapour-compression refrigeration system is responsible for lowering the pressure and temperature of the liquid refrigerant before it enters the evaporator?
The expansion valve meters the flow of liquid refrigerant and causes a pressure drop, leading to a temperature reduction.
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Question: Which component in a vapour-compression refrigeration system is responsible for lowering the pressure and temperature of the liquid refrigerant before it enters the evaporator?
Answer options: ✅ Expansion valve
- Compressor
- Condenser
- Receiver
Correct answer: Expansion valve
Explanation: The expansion valve meters the flow of liquid refrigerant and causes a pressure drop, leading to a temperature reduction.
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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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