Preservation of Food

In a vapor compression refrigeration cycle using R-134a, the refrigerant enters the compressor as saturated vapor with enthalpy $h_1 = 390.0\text{ kJ/kg}$ and leaves the compressor with enthalpy $h_2 = 425.0\text{ kJ/kg}$. The refrigerant leaves the condenser as saturated liquid with enthalpy $h_3 = 240.0\text{ kJ/kg}$. If the expansion process is isenthalpic ($h_4 = h_3$), the COP of the cycle is ________ (round off to 2 decimal places).