. ■ 



Rate of Creation of energy 



aighg + m 1 h 1 



- c<h, + — (Storage) 

 * ' dt 



where h stands for the enthalpy of the a and d/dt (storage) stands for 

 the rate of increase of energy storage. 



Assume 



a. 1.4 H_ + 0. + 3.76 N„ -^ 1.4 H.O + 0.3 0- + 3.76 N„ 



b. T, 



1400 F 



c. T, 



600 F 



d. Tg =■ 600 F which implies that the hydride heat 

 exchanger is 100% effective. 



From Gas Tables by Keenan and Kaye [68], in terms of Btu/lb-mole 



at T 7 Vo 



16027.6 



h = 13986.8 

 °2 



h^ - 13426.5 



atT 8 Vo 



8595.0 



h = 7543.6 

 °2 



\ =74 ° 7 - 2 



at Tj hg = 7284.4 



Letting d/dt (storage) be the difference between the heat entering 

 the hydride container and that leaving the hydride container. 



dt < sCora S e > - S h ? - m 8 h 8 



■ m 1 h 1 

 1.4 (16027.6 - 8595.0) + 0.3 (13986.8 - 7543.6) 



54 



