Refrigeration & Air Conditioning Mechanic Red Seal · Question
Which of the following is an example of an indirect refrigeration system?
An indirect system uses an intermediate fluid (like glycol or chilled water) to transfer heat from the conditioned space to the primary refrigerant circuit, whe
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Question: Which of the following is an example of an indirect refrigeration system?
Answer options:
- A split-system central air conditioner using R-410A
- A reach-in freezer using R-290 (propane) ✅ A chiller system using glycol solution to cool a building's air
- A direct expansion (DX) walk-in cooler
Correct answer: A chiller system using glycol solution to cool a building's air
Explanation: An indirect system uses an intermediate fluid (like glycol or chilled water) to transfer heat from the conditioned space to the primary refrigerant circuit, whereas direct expansion (DX) systems use the refrigerant directly.
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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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