The refrigeration system above uses ammonia (NH3) as the refrigerant. Find: Enthalpies at each point of the cycle in kJ/kg • Total refrigerating capacity in TOR • Compressor power in kW ● Heat rejected in kW ● Coefficient of Performance • Draw the P-h Diagram Hint: h₂ = (h₁ + 281.17) kJ/kg

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
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●
●
3
●
6
3
30°C
NH 3
mA = 0.25 kg/s
4 -5°C
mB = 0.30 kg/s
B -20°C
5
The refrigeration system above uses
ammonia (NH3) as the refrigerant. Find:
7
1
• Heat rejected in kW
• Coefficient of Performance
• Draw the P-h Diagram
Hint: h₂ = (h₁ + 281.17) kJ/kg
2
Enthalpies at each point of the cycle in
kJ/kg
Total refrigerating capacity in TOR
Compressor power in kW
1
Transcribed Image Text:● ● 3 ● 6 3 30°C NH 3 mA = 0.25 kg/s 4 -5°C mB = 0.30 kg/s B -20°C 5 The refrigeration system above uses ammonia (NH3) as the refrigerant. Find: 7 1 • Heat rejected in kW • Coefficient of Performance • Draw the P-h Diagram Hint: h₂ = (h₁ + 281.17) kJ/kg 2 Enthalpies at each point of the cycle in kJ/kg Total refrigerating capacity in TOR Compressor power in kW 1
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