A flow of 1500 kg/h of hydrocarbon oil at 100oF enters a heat exchanger, where it is heated to 150oF by hot air. The hot air enters at 300oF and is to leave at 200°F. Calculate the total lb mol air/h needed. The mean heat capacity of the oil is 0.45 btu/lbmoF.

Sagot :

5 J ng init ang pumapasok sa system at 60 J ng trabaho ay ginagawa ng system