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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 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 750 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.

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 750 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
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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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 750 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 1+ R22 at T₂ = 110°F Compressor MR22 = 5.205 1₂=160°F P₂=200 lbfin 2 I₁=40°F P1-80 lbf/in ² Your answer is correct. www www Condenser Determine the mass flow rate of refrigerant, in lb/min, and the compressor power, in horsepower. Air at T₁ P4-14.7 lbfin.² (AV)₁ Determine the mass flow rate of refrigerant, in lb/min. lb/min 7₂-90°F P=200 lbf/in ² T₂ = 60°F T₁ = 90°F T = 40°F P2 P3200 Ibin² Pi = 80 lbrin²
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 750 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 1+ R22 at T₂ = 110°F Compressor MR22 = 5.205 1₂=160°F P₂=200 lbfin 2 I₁=40°F P1-80 lbf/in ² Your answer is correct. www www Condenser Determine the mass flow rate of refrigerant, in lb/min, and the compressor power, in horsepower. Air at T₁ P4-14.7 lbfin.² (AV)₁ Determine the mass flow rate of refrigerant, in lb/min. lb/min 7₂-90°F P=200 lbf/in ² T₂ = 60°F T₁ = 90°F T = 40°F P2 P3200 Ibin² Pi = 80 lbrin²
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