Refrigeration & Air Conditioning Mechanic Red Seal · Question
What is the primary effect of non-condensable gases in a refrigeration system?
Non-condensable gases occupy space in the condenser, increasing head pressure and temperature, which reduces system efficiency.
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Question: What is the primary effect of non-condensable gases in a refrigeration system?
Answer options: ✅ Increased discharge pressure and temperature
- Decreased evaporator superheat
- Reduced compressor current draw
- Improved oil return to the compressor
Correct answer: Increased discharge pressure and temperature
Explanation: Non-condensable gases occupy space in the condenser, increasing head pressure and temperature, which reduces system efficiency.
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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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