As shown in the figure, Refrigerant 22 enters the compressor of an air conditioning unit operating at steady state at 40°F, 801B,/h² and is compressed to 160°F, 200 lb/in2. The refrigerant exiting the compressor enters a condenser where energy transfer to air as a separate stream occurs, and the refrigerant exits as a liquid at 200 lb/in², 90°F. Air enters the condenser at 75°F, 14.7 lb/in² with a volumetric flow rate of 1250 ft3/min and exits at 110°F. Neglect stray heat transfer and kinetic and potential energy effects, and assume ideal gas behavior for the air. 7₁-110°F 1+ R22 at 2- Compressor www www T₂-160°F P₂-200 lbfin T₁-40°F Pi-80 lbf/in.² Condenser 4 Air at T₁ P4-14.7 lbfin.' (AV)4 73-90°F P-200 lbf/in² T₂ <=60°F T₁ = 90°F T₁ - = 40°F A Determine the mass flow rate of refrigerant, in lb/min, and the compressor power, in horsepower. P2 = po = 200 bin p=80 Ihrin

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13 thermodynamics
As shown in the figure, Refrigerant 22 enters the compressor of an air conditioning unit operating at steady state at 40°F, 80 lb/in²
and is compressed to 160°F, 200 lb/in2. The refrigerant exiting the compressor enters a condenser where energy transfer to air as a
separate stream occurs, and the refrigerant exits as a liquid at 200 lb/in2, 90°F. Air enters the condenser at 75°F, 14.7 lb/in² with a
volumetric flow rate of 1250 ft3/min and exits at 110°F. Neglect stray heat transfer and kinetic and potential energy effects, and
assume ideal gas behavior for the air.
I, 110°F
Compressor
1+ R22 at
www
www
T₂-160°F
P₂-200 lbfin
Condenser
4
Air at T₁ P4-14.7 lbfin.²
(AV),
7₁-90°F
P-200 lbf/in ²
T₂
= 60°F
T₁
-90°F
T₁
= 40°F
T₁-40°F
Pi-80 lbf/in 2
Determine the mass flow rate of refrigerant, in lb/min, and the compressor power, in horsepower.
,P2= pa = 200 lb/in
Pi = 80 Thbrin
Transcribed Image Text:As shown in the figure, Refrigerant 22 enters the compressor of an air conditioning unit operating at steady state at 40°F, 80 lb/in² and is compressed to 160°F, 200 lb/in2. The refrigerant exiting the compressor enters a condenser where energy transfer to air as a separate stream occurs, and the refrigerant exits as a liquid at 200 lb/in2, 90°F. Air enters the condenser at 75°F, 14.7 lb/in² with a volumetric flow rate of 1250 ft3/min and exits at 110°F. Neglect stray heat transfer and kinetic and potential energy effects, and assume ideal gas behavior for the air. I, 110°F Compressor 1+ R22 at www www T₂-160°F P₂-200 lbfin Condenser 4 Air at T₁ P4-14.7 lbfin.² (AV), 7₁-90°F P-200 lbf/in ² T₂ = 60°F T₁ -90°F T₁ = 40°F T₁-40°F Pi-80 lbf/in 2 Determine the mass flow rate of refrigerant, in lb/min, and the compressor power, in horsepower. ,P2= pa = 200 lb/in Pi = 80 Thbrin
B
Step 1
7-110°F vu
www
1 R22 at
MR22 =
2-
Compressor
T₂=160°F
P₂-200 lbfin
T₁-40°F
Pi-80 lbf/in2
(AV),
73-90°F
P=200 lbf/in²
Determine the mass flow rate of refrigerant, in lb/min, and the compressor power, in horsepower.
Determine the mass flow rate of refrigerant, in lb/min.
lb/min
T₂
= 60°F
T₁
= 90°F
T₁
= 40°F
P2 Pa = 200 lb/in
pi=80 lbrin
1
Transcribed Image Text:B Step 1 7-110°F vu www 1 R22 at MR22 = 2- Compressor T₂=160°F P₂-200 lbfin T₁-40°F Pi-80 lbf/in2 (AV), 73-90°F P=200 lbf/in² Determine the mass flow rate of refrigerant, in lb/min, and the compressor power, in horsepower. Determine the mass flow rate of refrigerant, in lb/min. lb/min T₂ = 60°F T₁ = 90°F T₁ = 40°F P2 Pa = 200 lb/in pi=80 lbrin 1
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