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 lbs/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 80°F, 14.7 lb/in² with a volumetric flow rate of 1000 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.

Elements Of Electromagnetics
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T-13

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 lbs/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 80°F, 14.7 lb/in² with a
volumetric flow rate of 1000 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.
Step 1
Compressor
wwwwww
wwwww
mg22 = 1
7₂-150 F
P-200¹
Condenser
Air a 7, F-14.7 lbfin.
(AV),
7₁-90°F
P-200 bin²
R22 at
7₁-40°F
PL-80 Itin²
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
Ti
<- 60 E
T₁
<-90°E
T₂
<= 40°F
== 200 br
Pi-80 lovin
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 lbs/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 80°F, 14.7 lb/in² with a volumetric flow rate of 1000 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. Step 1 Compressor wwwwww wwwww mg22 = 1 7₂-150 F P-200¹ Condenser Air a 7, F-14.7 lbfin. (AV), 7₁-90°F P-200 bin² R22 at 7₁-40°F PL-80 Itin² 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 Ti <- 60 E T₁ <-90°E T₂ <= 40°F == 200 br Pi-80 lovin
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