The Condensation of Flowing Steam Part I—Condensation in Diverging Nozzles

Abstract
The authors discuss the apparatus and method used in determining the point of condensation in diverging nozzles. The discussion is restricted to nozzles with very short throats and with angles of divergence greater than 2 deg. As a primary result of the work described, the authors locate the Wilson line for continuously expanding steam at the 4.5 per cent moisture line on the Mollier diagram. Condensation points and sizes of steam droplets are discussed for various pressure and temperature conditions before expansion and for various back pressures.

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