Q381
Pick out the undesirable property for a good refrigerant.
A.
High thermal conductivity
B.
Low freezing point
C.
Large latent heat of vaporisation
D.
High viscosity
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
High viscosity is obviously an undesirable property of good refrigerant as it increases the losses of energy converts the useful energy in to non-conservative frictional energy.