Refrigeration and Air Conditioning
Which of the following statement is wrong?

In a vapour compression system, the condition of refrigerant before entering the compressor is dry saturated vapour
The value of C.O.P. is always greater than one
The space between the saturated liquid line and saturated vapour line, in a pressure enthalpy chart, is wet vapour region
None of the listed here

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Refrigeration and Air Conditioning
A good refrigerant should have

High latent heat of vaporisation and low freezing point
High operating pressures and low freezing point
Low C.O.P. and low freezing point
High specific volume and high latent heat of vaporisation

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