■ 



;■■— 





+ 3.76 (13426.5 - 7407.2) - 1.4 (7284.4) 

 - 24773*^ 







^ * 24773.0 Btu 17695 Btu 



Therefore — — — — — — ——~ » are available 



1.4 lb-mole of ^ lb-sole JL 





1 * 



■ 

 la the exhaust gases of a hydrogen ccsbustion process for absorption in 

 the Mg Hi Hydride. Proa Table 3 it can be seen that Mg HI hydride 

 requires 33,300 Btu/lbsole of H_. Thus 15,605 Btu taore axe needed to 

 release every lbmole of H_. There is not enough energy in the exhaust 

 gases to release the hydrogen. 





! 



COOLING ANALYSIS 





« 



Calculations showing the water needs for boiling water cooling of 

 magnesi'sa~nickel hydride during hydrogen absorption. 



Given 3 cases-Supply water at 60°F, 150°F, or 212°F 





■ 



final state is vapor at 250 F, 1 atmosphere. 





. 







© 



1 



■ 





». 

 i • 





Mg + 6% N. 





) 



I 



T 







i 



GtS/J* \ b 





J 







© 



7 \ 



; 



- - 



) 











1 

 1 



H 



F© 



s 



I 



| 



i 



Q = (h a - h 27 ) + (hb - h a ) + (h 28 - h^) 





J; 



■ 14.5 lbn water when T__ ■ 60 F 

 27 



: 



| 



15.7 lba water when T - 150°F 



; . 



1 







17.0 



lba W£ 



iter when T = 212°F 





53 



