You wish to heat a stream of CO2 at pressure 1 bar, fl owing at 10 mol/s, from 150°C to 300°C in a countercurrent heat exchanger. To do this task, you are using a stream of high-pressure steam available at 40 bar and 400°C, as shown in the following fi gure. The steam exits the heat exchanger as a saturated vapor. You may assume the pressure of each stream stays constant as it fl ows through the heat exchanger (i.e., neglect the pressure drop of the fl owing streams). The entire system is well insulated as shown. Calculate the change in exthalpy of each stream and the lost work during this process.

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rico2 = 10 [mol] S Tin = 150 [C] Pin = 1 [bar] CO Steam Insulation Heat Exchanger CO2 Steam Tout=300 [C] Tin = 400 [C] Pin = 40 [bar]