Hartmann, Francis M., 1870- · New York, McGraw-Hill · leaf 175
v\, and similarly for thepoint b, by p2 and V2, we have pi = p2+P2tan£ = p2(l+tan £); . . . . (11)and t;i+0i tan (x = V2,from which ^iw(l+tan<x)n = z;2n. ...... (12) 164 THERMODYNAMICS Multiplying equations (11) and (12), member by member, weobtain piwin(l+tana)n = p2t;2w(l+taii&); . . .… … Fig. 28. The value of n to be used, if we are dealing with steam, isfound by means of Zeuners equation, which is equation (2) ofArt. 119. And if we wish to plot an isotherm, n in equation (10)is made unity, thus making the angles a and g equal. In drawing the lines OD and OC, some convenient value…
Heat · Thermodynamics
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