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 have been asked to use a stream of highpressure steam available at 40 bar and 400°C, as shown in the following fi gure. 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. It is undesirable for the steam to condense in the heat exchanger tubes. What is the minimum volumetric fl ow rate, in m3/s, required of the inlet steam to keep it from condensing at the exit?

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