Refrigeration & Air Conditioning Mechanic Red Seal · Question
While commissioning a new R-134a refrigeration system, the technician measures the evaporator outlet temperature at 5°C and the corresponding saturated suction temperature at -5°C. The condenser outlet temperature is 35°C and the saturated condensing temperature is 45°C. What are the superheat and subcooling values, respectively?
Superheat = Evaporator outlet temp - Saturated suction temp = 5°C - (-5°C) = 10 K. Subcooling = Saturated condensing temp - Condenser outlet temp = 45°C - 35°C
Start free practice for Refrigeration & Air Conditioning Mechanic Red Seal
500 questions · no signup required · 40 free questions per day
Question: While commissioning a new R-134a refrigeration system, the technician measures the evaporator outlet temperature at 5°C and the corresponding saturated suction temperature at -5°C. The condenser outlet temperature is 35°C and the saturated condensing temperature is 45°C. What are the superheat and subcooling values, respectively?
Answer options: ✅ 10 K superheat, 10 K subcooling
- 5 K superheat, 10 K subcooling
- 10 K superheat, 5 K subcooling
- 5 K superheat, 5 K subcooling
Correct answer: 10 K superheat, 10 K subcooling
Explanation: Superheat = Evaporator outlet temp - Saturated suction temp = 5°C - (-5°C) = 10 K. Subcooling = Saturated condensing temp - Condenser outlet temp = 45°C - 35°C = 10 K.
Start free practice for Refrigeration & Air Conditioning Mechanic Red Seal
500 questions · no signup required · 40 free questions per day
More about Refrigeration & Air Conditioning Mechanic Red Seal
Related Questions
- 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
- Which type of electric motor requires a capacitor for starting and running, offering higher efficiency and bet
- When evacuating a refrigeration system, what is the recommended deep vacuum level, typically measured in micro
More for Refrigeration & Air Conditioning Mechanic Red Seal candidates
FAQs
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
Ready to practice?
Free, no signup required. Build a wrong-question list as you go.
Start Free Refrigeration & Air Conditioning Mechanic Red Seal Practice →Related courses
Other Canadian certifications candidates often prepare for alongside this one.