Refrigeration & Air Conditioning Mechanic Red Seal · Question
What is the purpose of subcooling liquid refrigerant before it enters the expansion device?
Subcooling ensures that only liquid refrigerant enters the expansion valve, preventing premature flashing (flash gas) which would reduce the evaporator's effect
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Question: What is the purpose of subcooling liquid refrigerant before it enters the expansion device?
Answer options: ✅ To prevent flash gas and increase the cooling capacity of the evaporator.
- To lower the discharge pressure of the compressor.
- To reduce the refrigerant temperature in the condenser.
- To increase the pressure of the refrigerant in the liquid line.
Correct answer: To prevent flash gas and increase the cooling capacity of the evaporator.
Explanation: Subcooling ensures that only liquid refrigerant enters the expansion valve, preventing premature flashing (flash gas) which would reduce the evaporator's effective cooling capacity.
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- 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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