TABLE 167.— PROPERTIES OF SATURATED STEAM 

 Common units, 400° to 700°F 



175 



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, February, 1929, v, specific vol., ft 3 /lb; h, total heat, enthalpy, 

 Btu/lb ; s, entropy, Btu lb" 1 °F _1 . The strict definition of total heat (internal energy + 

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

 32° F. No internal energy values are tabulated but may be easily found by sub- 

 tracting 144 pv/J from the total heat The energy unit, the Btu, is 778.57 ft-lb (/) is 1/180 

 of the change in total heat along the saturated liquid line between 32° and 212°F. 



SMITHSONIAN PHYSICAL TABLES 



