tifta 



So h t - h 2 + (h 1s - h 2 )/0.9 



Assuming that Tatm - 40 F 



30 F P 2 - 1 atm 



P. - 20, 30, 60, and 70 atm. 



a table can be compiled using values taken from Reference 68 



Q /W = COP 

 79*5. 4179.5 4.5 



P, h. h. 

 2 Is is 



h 1 Btu/lbm 



30 8898.4 4413.9 4721.5 



3.9 



60 10878.8 5396.2 5813.0 



3.1 



70 11378.0 5643.8 6088.1 



3.0 



51 



