The following lines are given Mollier Diagram:
(i) Constant h – lines (horizontal)
(ii) Constant s -lines (vertical lines)
(iii) Constant P- lines
(iv) Constant v -lines
(v) Constant t -lines
(vi) Constant x -lines.
11.8.1 Isentropic Process (s = c)
Point 1: Intersection of P1 & t1 (initial point located).
For point 2: As s =constant, we draw vertical line from 1 to intersect P2 (given) at 2.
It is observed (as an example) the steam is wet at 2, with dryness fraction of x2 ( < x1). The enthalpy drop h1 – h2 may be read out from the chart.
11.8.2 Throttling Process (h = const.)
Point 1 : Intersection of P1 and x1 (given).
For point 2: Draw horizontal line to meet P2 at 2.
For example, it is seen from the diagram that the steam at point 2 is superheated.