Refrigeration & Air Conditioning Mechanic Red Seal · Question
What is the main operating characteristic difference between a fixed orifice (capillary tube) and a Thermostatic Expansion Valve (TXV)?
A TXV actively adjusts refrigerant flow to maintain a constant superheat, whereas a capillary tube provides a fixed restriction, making it less responsive to lo
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Question: What is the main operating characteristic difference between a fixed orifice (capillary tube) and a Thermostatic Expansion Valve (TXV)?
Answer options: ✅ TXV modulates refrigerant flow based on superheat, capillary tube does not
- Capillary tube offers greater efficiency at varying loads
- TXV requires a receiver, capillary tube does not
- Capillary tube is more complex and expensive to install
Correct answer: TXV modulates refrigerant flow based on superheat, capillary tube does not
Explanation: A TXV actively adjusts refrigerant flow to maintain a constant superheat, whereas a capillary tube provides a fixed restriction, making it less responsive to load changes.
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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
- Which type of electric motor requires a capacitor for starting and running, offering higher efficiency and bet
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