As shown in the figure, Refrigerant 22 enters the compressor of an air conditioning unit operating at steady state at 40°F, 80 lb;/in? and is compressed to 160°F, 200 lb/in?. 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 lbe/in?, 90°F. Air enters the condenser at 70°F, 14.7 lb/in? with a volumetric flow rate of 1000 ft/min and exits at 110°F. Neglect stray heat transfer and kinetic and potential energy effects, and assume ideal gas behavior for the air.

Elements Of Electromagnetics
7th Edition
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As shown in the figure, Refrigerant 22 enters the compressor of an air conditioning unit operating at steady state at 40°F, 80 Ib/in?
and is compressed to 160°F, 200 Ib/in². The refrigerant exiting the compressor enters a condenser where energy transfer to air as a
lisco
separate stream occurs, and the refrigerant exits as a liquid at 200 lb/in?, 90°F. Air enters the condenser at 70°F, 14.7 Ib:/in? with a
volumetric flow rate of 1000 ft/min and exits at 110°F. Neglect stray heat transfer and kinetic and potential energy effects, and
assume ideal gas behavior for the air.
Condenser
wwww
Air at T, Pa=14.7 lbfin
(AV),
110°F
P2 = p3= 200 Ibn
I3-90'F
A=200 bin 2
= 60°F
= 160 F
P-200 1fin.
= 90°F
pi= 30 Ibrin
T.
Campressor
= 40'F
1 R22 at
I-40°F
P-80 Itlin?
Determine the mass flow rate of refrigerant, in Ib/min, and the compressor power, in horsepower.
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 Ib/in? and is compressed to 160°F, 200 Ib/in². The refrigerant exiting the compressor enters a condenser where energy transfer to air as a lisco separate stream occurs, and the refrigerant exits as a liquid at 200 lb/in?, 90°F. Air enters the condenser at 70°F, 14.7 Ib:/in? with a volumetric flow rate of 1000 ft/min and exits at 110°F. Neglect stray heat transfer and kinetic and potential energy effects, and assume ideal gas behavior for the air. Condenser wwww Air at T, Pa=14.7 lbfin (AV), 110°F P2 = p3= 200 Ibn I3-90'F A=200 bin 2 = 60°F = 160 F P-200 1fin. = 90°F pi= 30 Ibrin T. Campressor = 40'F 1 R22 at I-40°F P-80 Itlin? Determine the mass flow rate of refrigerant, in Ib/min, and the compressor power, in horsepower.
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