Saturated steam at a gauge pressure of 2.0 bar is to be used to heat a stream of ethane. The ethane enters a heat exchanger at 16°C and 1.5 bar gauge at a rate of 795 m3 /min and is heated at constant pressure to 93°C. The steam condenses and leaves the exchanger as a liquid at 27°C. The specific enthalpy of ethane at the given pressure is 941 kJ/kg at 16°C and 1073 kJ/kg at 93°C. (a) How much energy (kW) must be transferred to the ethane to heat it from 16°C to 93°C? (b) Assuming that all the energy transferred from the steam goes to heat the ethane, at what rate in m3 /s must steam be supplied to the exchanger? If the assumption is incorrect, would the calculated value be too high or too low