Engine oil (cp = 2100 J/kg·K) is to be heated from 20°C to 60°C at a rate of 0.3 kg/s in a 2-cm-diameter thin-walled copper tube by condensing steam outside at a temperature of 130°C (hfg = 2174...

Engine oil (cp = 2100 J/kg·K) is to be heated from 20°C to 60°C at a rate of 0.3 kg/s in a 2-cm-diameter thin-walled copper tube by condensing steam outside at a temperature of 130°C (hfg = 2174 kJ/kg). For an overall heat transfer coefficient of 650 W/m2·K, determine the rate of heat transfer and quantity of oil heated per hour