Refrigeration & Air Conditioning Mechanic Red Seal · Question
A refrigeration machinery room with an occupancy of two persons contains an R-404A system. The room volume is 100 m³. If the emergency mechanical ventilation system must provide 10 air changes per hour when activated, what is the required emergency airflow rate?
The emergency mechanical ventilation system must provide at least 10 air changes per hour. Therefore, 100 m³ * 10 air changes/hour = 1000 m³/h. CSA B52 outlines
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Question: A refrigeration machinery room with an occupancy of two persons contains an R-404A system. The room volume is 100 m³. If the emergency mechanical ventilation system must provide 10 air changes per hour when activated, what is the required emergency airflow rate?
Answer options: ✅ 1000 m³/h
- 1200 m³/h
- 1500 m³/h
- 2000 m³/h
Correct answer: 1000 m³/h
Explanation: The emergency mechanical ventilation system must provide at least 10 air changes per hour. Therefore, 100 m³ * 10 air changes/hour = 1000 m³/h. CSA B52 outlines emergency ventilation requirements based on refrigerant charge and room volume.
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- 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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