Table 290 (continued) 



PROPERTIES OF SATURATED STEAM 



Metric and Common Units 0° to 220° C 



2 99 



If a is the reciprocal of the Mechanical Equivalent of Heat, p the pressure, s and a the specific volumes of the 

 liquid and the saturated vapor, s — .<r, the change of volume, then the heat equivalent of the external work is Apu := 

 Ap(s — <r). Heat equivalent of internal work, p = r — Apu. For experimental sp. vols, see Knoblauch, l.inde and 

 Klebe, Mitt, iiber Forschungarbeiten, 21, p. 33, 1905. Entropy = S dQ/T, where dQ = amount of heat added at ab- 

 solute temperature T. For pressures of saturated steam see Holborn and Henning, Ann. der Phys. 26, p. 833, 1908; 

 for temperatures above 205 C corrected from Regnault. 



Smithsonian Tables. 



