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Outside air at 90°F Air exiting at T>90°F T3 = 100°F 3 P3 = 225 lbf/in.² www 2+ Condenser P2 = 225 lbf/in.2 h₂ = 130 Btu/lb Expansion valve Compressor Power input = 200 Btu/min T4= 62°F 4 Evaporator www 1+ P₁ = 120 lbf/in.2 Saturated vapor Fig. P4.107 Supply air to residence at T<75°F Return room air at 75°F 4.107 A residential air-conditioning system operates at steady state, as shown in Fig. P4.107. Refrigerant 22 circulates through the components of the system. Property data at key locations are given on the figure. If the evaporator removes energy by heat transfer from the room air at a rate of 600 Btu/min, determine (a) the rate of heat transfer between the compressor and the surroundings, in Btu/min, and (b) the coefficient of performance.

Outside air at 90°F Air exiting at T>90°F T3 = 100°F 3 P3 = 225 lbf/in.² www 2+ Condenser P2 = 225 lbf/in.2 h₂ = 130 Btu/lb Expansion valve Compressor Power input = 200 Btu/min T4= 62°F 4 Evaporator www 1+ P₁ = 120 lbf/in.2 Saturated vapor Fig. P4.107 Supply air to residence at T<75°F Return room air at 75°F 4.107 A residential air-conditioning system operates at steady state, as shown in Fig. P4.107. Refrigerant 22 circulates through the components of the system. Property data at key locations are given on the figure. If the evaporator removes energy by heat transfer from the room air at a rate of 600 Btu/min, determine (a) the rate of heat transfer between the compressor and the surroundings, in Btu/min, and (b) the coefficient of performance.

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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Outside air at 90°F Air exiting at T>90°F T3 = 100°F 3 P3 = 225 lbf/in.² www 2+ Condenser P2 = 225 lbf/in.2 h₂ = 130 Btu/lb Expansion valve Compressor Power input = 200 Btu/min T4= 62°F 4 Evaporator www 1+ P₁ = 120 lbf/in.2 Saturated vapor Fig. P4.107 Supply air to residence at T<75°F Return room air at 75°F
Transcribed Image Text:Outside air at 90°F Air exiting at T>90°F T3 = 100°F 3 P3 = 225 lbf/in.² www 2+ Condenser P2 = 225 lbf/in.2 h₂ = 130 Btu/lb Expansion valve Compressor Power input = 200 Btu/min T4= 62°F 4 Evaporator www 1+ P₁ = 120 lbf/in.2 Saturated vapor Fig. P4.107 Supply air to residence at T<75°F Return room air at 75°F
4.107 A residential air-conditioning system operates at steady state, as shown in Fig. P4.107. Refrigerant 22 circulates through the components of the system. Property data at key locations are given on the figure. If the evaporator removes energy by heat transfer from the room air at a rate of 600 Btu/min, determine (a) the rate of heat transfer between the compressor and the surroundings, in Btu/min, and (b) the coefficient of performance.
Transcribed Image Text:4.107 A residential air-conditioning system operates at steady state, as shown in Fig. P4.107. Refrigerant 22 circulates through the components of the system. Property data at key locations are given on the figure. If the evaporator removes energy by heat transfer from the room air at a rate of 600 Btu/min, determine (a) the rate of heat transfer between the compressor and the surroundings, in Btu/min, and (b) the coefficient of performance.
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