4.1 Saturated steam at 300°C is used to heat a counter currently flowing stream of methanol vapour from 65°C to 260°C in an adiabatic heat exchanger. The flow rate of the methanol is 5500 standard litres per minute, and the steam condenses and leaves the heat exchanger as liquid water at 90°C.4.1.1 Calculate the required flow rate of the entering steam in m3 /min. (10)4.1.2 Calculate the rate of heat transfer from the water to the methanol (kW). (5)