<P4 Table 291 



PROPERTIES OF SATURATED STEAM 



Common Units, 400 to 700 F. 



Abridged from Steam Tables and Mollier's Diagram by Keenan. Printed by permission 

 of the publisher, The American Society of Mechanical Engineers. For detailed discussion 

 see Mechanical Engineering, Feb., 1929. v, specific vol., ft. 3 /lb. ; h, total heat, enthalpy, 

 B.t.u./lb.; 5, entropy, B.t.u./°F./lb. The strict definition of total heat (internal energy -+- 

 144/7) is adhered to; zeros of both h and 5 are arbitrarily placed on the sat. liq. line at 32°F. 

 No internal energy values are tabulated but may be easily found by subtracting 144 pv/J 

 from the total heat. The energy unit, the B.t.u., is 778.57 ft. -lb. (J) is 1/180 of the change in 

 total heat along the saturated liquid line between 32 and 2i2°F. (Osborne, Fiock, Stimson.) 



Smithsonian Tables 



