• Support PF! Buy your school textbooks, materials and every day products Here!

Energy Transfer Please Help

  • #1
The problem statement
Refrigerant- 134a enters the compressor of a refrigeration system as saturated vapor at 0.14 MPa, and leaves as superheated vapor at 0.8 MPa and 50C at a rate of 0.04 kg/s. Determine the rate of energy transfers by mass into and out of the compressor. Assume the kinetic and potential energies to be neglected.


I know that the rate of mass in is equal to the rate of mass out and I'm assuming that I only need to find the internal energ u. But I'm not really sure at all to be honest. I have my textbook with all the formulas but I dont know what to apply when or how. Could someone please help me. :confused:
 

Answers and Replies

  • #2
150
0
i think u should take a shot urself first, and show it. i dont know exactly if i'm allowed to help u just like that.
 
  • #3
157
0
Apply conservation of mass and conservation of energy.
 

Related Threads on Energy Transfer Please Help

  • Last Post
Replies
3
Views
914
  • Last Post
Replies
0
Views
1K
  • Last Post
Replies
5
Views
2K
Replies
0
Views
937
Replies
2
Views
2K
  • Last Post
Replies
4
Views
647
Replies
1
Views
9K
Replies
1
Views
626
Replies
7
Views
800
Replies
1
Views
2K
Top