Problems:
4.76, T₃ should be 28^oC

Answers:

4.76:

Q-dotcond = - 834.4 kJ/min Q-dotcomp = - 21.48 kJ/min Q-dotevap = 705.9 kJ/min

Hints:
* Consider each device separately
* Find the phase at each state
* Remember what a throttling valve (expansion valve) does
* USE UNITS!

In general:

• Read EACH word.
• Draw some pictures (one for each state).
• Write the given information.
• Write what it is you are to find.
• Write your assumptions
• Write write the equations you are to use (or might want to use).
• If necessary, find the phase at each state. (you may need this to find the "u"s, "v"s or "h"s)
• Solve the problem...
• PLEASE try to be organized.