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Methane enters a heat e xchanger at a volumetric flow rate of 145.0 m 3 /min,...

Methane enters a heat e xchanger at a volumetric flow rate of 145.0 m 3 /min, at an absolute pressure of 1.013 bar and temperature of 15.0°C. At these conditions, the specific enthalpy of methane is - 23.181 kJ/kg. The methane leaves the heat exchanger at an absolute pressure of 1.0 13 bar and temperature of 60.0°C. The corresponding specific enthalpy at these conditions is 78.656 kJ/kg. The methane is heated by a stream of saturated steam entering the heat exchanger at 2.0 bar (absolute) and leaving as a liquid at 58°C. Find the volu metric flow rate of saturated steam into the heat exchanger by following the steps below. (1) D raw and label the flowchart. This may get tricky. (2) What is the mass flow rate of methane into the heat exchanger? (3) What rate of heat is supplied to the methane stream in order to heat it from 15.0°C to 60.0°C? (4) What is the minimum mass flow rate of saturated steam into the heat exchanger? (5) What is the volumetric flow rate of saturated steam into the heat exchanger?

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