Problems: Remember to show process on a p-v plot

3.48
3.63
3.93
3.105
4.13 a condenser is a box with 1 inlet pipe and 1 exit pipe.
4.15b,c

Answers:

3.48:	1Q2 = -2649 kJ
3.63:	1W2 = 18 kJ 1Q2 = 137.1 kJ
3.93:	delta-h = 1488 kJ/kg delta-u = 1239 kJ/kg
3.105:	(a) 1Q2 = 32.88 kJ (b) 1Q2 = 28.21 kJ (c) 1Q2 = 27.25 kJ
4.13:	velocity1 = 3.74 m/s d2 = 0.60 cm
4.15:	(b) m-dot = 0.0222 lb/s (c) m-dot = 0.0905 lb/s

Hints:
3.93: Remember, you may want to integrate using variables for the coefficients BEFORE using the actual values.
3.105: answers may vary because C_vo varies with temperature...
4.13, 4.15 check the "special notes" page or the binder in the CoE library for an example problem (#4.10)
4.15: if the phase is not an Ideal Gas, you may need to find the phase,

Please Remember:

• Read EACH word.
• Draw some pictures (one for each state).
• Write the given information under each picture.
• Write what you know about the process.
• Write what it is you are to find.
• DRAW THE PROCESS ON A p-v PLOT.
• Write write the equations you are to use (or might want to use).
• If necessary, find the phase at each state.
• Be sure to indicate which tables you are using.
• Be sure to use the proper "work equation" for you process.
• PLEASE try to be organized.