Refrigeration & Air Conditioning Mechanic Red Seal · Question
A cold room equipped with a R-404A refrigeration system has a liquid receiver. What is the purpose of the dip tube (or standpipe) inside the receiver?
The dip tube in a liquid receiver extends to the bottom, ensuring that only liquid refrigerant is drawn into the liquid line. This prevents flash gas from enter
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Question: A cold room equipped with a R-404A refrigeration system has a liquid receiver. What is the purpose of the dip tube (or standpipe) inside the receiver?
Answer options: ✅ To ensure only liquid refrigerant leaves the receiver via the liquid line
- To separate flash gas from the liquid refrigerant before the expansion valve
- To protect the compressor from liquid slugging during startup
- To allow for continuous purging of non-condensable gases
Correct answer: To ensure only liquid refrigerant leaves the receiver via the liquid line
Explanation: The dip tube in a liquid receiver extends to the bottom, ensuring that only liquid refrigerant is drawn into the liquid line. This prevents flash gas from entering the liquid line, which would reduce the efficiency of the expansion valve and overall system capacity.
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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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