Refrigeration & Air Conditioning Mechanic Red Seal · Question
In a direct expansion (DX) evaporator, what state is the refrigerant typically in when it leaves the evaporator coil?
The evaporator absorbs heat, causing the liquid refrigerant to boil and change into a low-pressure, superheated vapor by the time it leaves the coil.
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Question: In a direct expansion (DX) evaporator, what state is the refrigerant typically in when it leaves the evaporator coil?
Answer options: ✅ Low-pressure, superheated vapor
- High-pressure, subcooled liquid
- Low-pressure, saturated liquid
- High-pressure, superheated liquid
Correct answer: Low-pressure, superheated vapor
Explanation: The evaporator absorbs heat, causing the liquid refrigerant to boil and change into a low-pressure, superheated vapor by the time it leaves the coil.
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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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