A refrigerator uses $R-134a$ as its refrigerant and operates on an ideal vapour-compression refrigeration cycle between $0.14 \: MPa$ and $0.8 \: MPa$.if the mass flow rate of refrigerant is $0.05 \: kg/s$,the rate of heat rejection to the environment is_______$kW$
Given data:
$\text{At } P=0.14 \: MPa, \: h=236.04 \: kJ/kg, \: s=0.9322 kJ/kg-K \text{ (saturated vapour) }$
$\text{At } P=0.8 \: MPa, \: h=272.05 \: kJ/kg, \: s=0.9322 kJ/kg-K \text{ (saturated vapour) }$
$\text{At } P=0.8 \: MPa, \: h=93.42 \: kJ/kg, \: \text{ (saturated liquid) }$