12 mx 10 5 The above refrigeration system uses R-12 as the refrigerant, determine: 1. Enthalpies at each point of the cycle 2. Total mass of refrigerant that circulates the system in kg/s 3. Total refrigerating capacity in TOR 4. Total compressor power in kW 5. Heat rejected in kW 6. Coefficient of Performance 7. Draw the P-h Diagram Note: Show your SYSTEM BALANCING. 6 7 O 40°C 3 Tin = 0°C mA=0.3 kg/s A -10°C mB=0.2 kg/s B -20°C mc=0.4 kg/s -20°C 9 11 13 mref R - 12 2

12 mx 10 5 The above refrigeration system uses R-12 as the refrigerant, determine: 1. Enthalpies at each point of the cycle 2. Total mass of refrigerant that circulates the system in kg/s 3. Total refrigerating capacity in TOR 4. Total compressor power in kW 5. Heat rejected in kW 6. Coefficient of Performance 7. Draw the P-h Diagram Note: Show your SYSTEM BALANCING. 6 7 O 40°C 3 Tin = 0°C mA=0.3 kg/s A -10°C mB=0.2 kg/s B -20°C mc=0.4 kg/s -20°C 9 11 13 mref R - 12 2

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

12
mx
10
5
The above refrigeration system uses R-12 as the refrigerant, determine:
1. Enthalpies at each point of the cycle
2. Total mass of refrigerant that circulates the system in kg/s
3. Total refrigerating capacity in TOR
4. Total compressor power in kW
5. Heat rejected in kW
6. Coefficient of Performance
7. Draw the P-h Diagram
Note: Show your SYSTEM BALANCING.
6
7
O
40°C
3
Tin = 0°C
mA=0.3 kg/s
A -10°C
mB=0.2 kg/s
B -20°C
mc=0.4 kg/s
-20°C
9
11
13
mref
R - 12
2

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