Hot nitrogen gas at 750(oF) and atmospheric pressure flows into a waste-heat boiler at the rate of
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Hot nitrogen gas at 750(oF) and atmospheric pressure flows into a waste-heat boiler at the rate of 40 (Ibm) (s)-1, and transfers heat to water boiling at l(atm). The water feed to the boiler Is saturated liquid at l(atm), and it leaves the boiler as superheated steam at l (atm) and 300(oF). If the nitrogen is cooled to 325(oF) and if heal is lost to the surroundings at a rate of 60(Btu) for each (lbm) of steam generated, what is the steam-generation rate? If the surroundings are at 70(oF) what is G for the process? Assume nitrogen to be an ideal gas for which CP = (7/2)R?
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M s steam rate in lbmsec M n nitrogen rate in lbmsec 1 sat liq water 212 degF enterin...View the full answer
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