hwset3
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hwset3

Course Number: ME 361, Fall 2008

College/University: Wisconsin

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ME 361 Thermodynamics Summer 2008 Homework set #3: Due in class, June 5 3-1. Determine the phase or phases in a system consisting of H2O at the following conditions and sketch p-v and T-v diagrams showing the location of each state. a) b) c) d) e) 3-2. p = 1.0 bar and T = 22 C p = 0.10 MPa and T = 150 C p = 10 kPa and T = 45.81 C T = 300 C and p = 100 bar T = 20 C and p = 2 kPa Determine the boiling temperature (...

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ME 361 Thermodynamics Summer 2008 Homework set #3: Due in class, June 5 3-1. Determine the phase or phases in a system consisting of H2O at the following conditions and sketch p-v and T-v diagrams showing the location of each state. a) b) c) d) e) 3-2. p = 1.0 bar and T = 22 C p = 0.10 MPa and T = 150 C p = 10 kPa and T = 45.81 C T = 300 C and p = 100 bar T = 20 C and p = 2 kPa Determine the boiling temperature ( F) of water at the following conditions: a) At normal atmospheric pressure (Po = 14.7 psi, which corresponds to sealevel). b) In Denver, where the pressure is P = 24.58 inch Hg c) At the summit of Mount Everest, where the pressure is P = 30 kPa. 3-3. Two kg of a two-phase, liquid-vapor mixture of R134a exists at 20 C in a 200liter tank. Determine the quality of the mixture. 3-4. Solve problem 3.14 in Moran & Shapiro two ways: 1) Using the tables provided in the Appendix of your book and 2) Using EES. For part c, compare the volume obtained using the compressed liquid table with the volume corresponding to saturated liquid at the same temperature. 3-5. Solve problem 3.30 in two ways: 1) Using the tables provided in the Appendix of your book and 2) Using EES. Compare the values. Do they exactly match? Note that a T-v plot for steam can be generated using the Property Plot menu item in the Plots menu. If you wish to overlay the three state points on this plot, it is most conveniently done by placing them in array variables, e.g., T[1]=value; v[1]=value; T[2]=value; v[2]=value; T[3]=value, v[3]=value.
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