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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
11.44Â Â Complete the following exercises dealing with slopes:
(a)Â Â At the triple point of water, evaluate the ratio of the slope of the vaporization line to the slope of the sublimation line. Use steam table data to obtain a numerical value for the ratio.
(b)  Consider the superheated vapor region of a temperature– entropy diagram. Show that the slope of a constant specific volume line is greater than the slope of a constant pressure line through the same state.
(c)  An enthalpy–entropy diagram (Mollier diagram) is often used in analyzing steam turbines. Obtain an expression for the slope of a constant-pressure line on such a diagram in
terms of p–y–T data only.
(d)  A pressure–enthalpy diagram is often used in the refrigeration industry. Obtain an expression for the slope of an isentropic line on such a diagram in terms of p–y–T data only.
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