Pick out the undesirable property for a good refrigerant ?
Correct answer: D. High viscosity
- A. High thermal conductivity
- B. Low freezing point
- C. Large latent heat of vaporisation
- D. High viscosity
Explanation
A good refrigerant should flow easily through pipes and compressors, so low viscosity is preferred. High viscosity increases frictional resistance and pumping work, making it undesirable.
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