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141m3 / min of hydrogen measured at normal conditions and nitrogen in 300% excess enter an isobaric reactor. Inlet gases at 460 ° C are reacted in the presence of a catalyst to synthesize ammonia. The process has an efficiency of 26%. The exhaust gases are cooled to -40 ° C to condense the ammonia. Assume that the Cp of the gas phase species can be used in the temperature range, and that Cp NH3 (l) = 0.071938 kJ / mol K. Calculate the overall heat flow of the system in kW.