In an ice-making plant, water at 0°C is frozen at atmosphere pressure (333.7 kJ/kg of heat is removed from water per unit mass in order to froze it into ice) by evaporating R-134a saturated liquid at -16°C. The refrigerant leaves this evaporator as a saturated vapor, and the plant is sized to produce ice at 0°C at a rate of 2500 kg/h. Determine the rate of entropy generation in this plant.