How to find out work done by compressor?

The work done to compress the refrigerant vapor is obtained by applying to the compression process:

Work done Wcomp= h2 - h1

Wcomp = Work done during the process

h1 = Enthalpy at inlet to the process,

h2 = Enthalpy at outlet to the process,

This is the work done by compressor per kg of the refrigerant.