Calculate change in enthalpy using Mollier Chart Assignment Help

Assignment Help: >> Property Diagrams and Steam tables - Calculate change in enthalpy using Mollier Chart

Example

Using Mollier Chart, Superheated steam at 700 psia & 680°F is extended at constant entropy to 140 psia. Determine the change in enthalpy?

Solution:

By using the Mollier Chart, Place point 1 at the intersection of the 700 psia and the 680°F line. Study h = 1333 Btu/lbm.

Obey the entropy line down vertically to the 140 psia line and examine h = 1178 Btu/lbm.

?h = 1178 - 1333 = -155 Btu/lbm 

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