HW9

Dear class-

Here are some clarifications / hints for HW9:

Problem 48: You will want to use the tabulated Pitzer correlations in the tables at the back of the book (which we reviewed in class), not the analytical virial coefficient equations (which we did not).

Problem 49: Think about which intensive property you can determine for the final state of the system, after one phase has disappeared. Recall that the book provides values for V, U, H, and S in the steam tables.

Problem 52: Notice that there are no tables for the properties of subcooled water. This is because liquid water at higher temperatures can be modeled to a reasonable degree with analytic equations. Therefore, for the pump part of this problem, you will have to use the equations presented in class for computing enthalpy changes in liquids in the isentropic and general cases. You might beware that there are some typos in eqns 7.25 and 7.26 in the book.

MSS