13-3 A refrigerant 22 refrigerating system operates with a condensing temperature of 35°C and an evaporating temperature of -10°C. If the vapor leaves the evaporator saturated and is compressed isentropically, what is the COP of the cycle (a) if saturated liquid enters the expansion device and (b) if the refrigerant entering the expansion de- vice is 10 percent vapor as in Fig. 13-3? Ans. (a) 4.71, (b) 4.20 13-4 Refrigerant 22 at a pressure of 1500 kPa leaves the condenser and rises vertically
13-3 A refrigerant 22 refrigerating system operates with a condensing temperature of 35°C and an evaporating temperature of -10°C. If the vapor leaves the evaporator saturated and is compressed isentropically, what is the COP of the cycle (a) if saturated liquid enters the expansion device and (b) if the refrigerant entering the expansion de- vice is 10 percent vapor as in Fig. 13-3? Ans. (a) 4.71, (b) 4.20 13-4 Refrigerant 22 at a pressure of 1500 kPa leaves the condenser and rises vertically
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Subject: Refrigeration Systems
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Reference Book : Stoecker and Jones, Refrigeration and Air Conditioning
![13-3 A refrigerant 22 refrigerating system operates with a condensing temperature of
35°C and an evaporating temperature of -10°C. If the vapor leaves the evaporator
saturated and is compressed isentropically, what is the COP of the cycle (a) if saturated
liquid enters the expansion device and (b) if the refrigerant entering the expansion de-
vice is 10 percent vapor as in Fig. 13-3? Ans. (a) 4.71, (b) 4.20
13-4 Refrigerant 22 at a pressure of 1500 kPa leaves the condenser and rises vertically
10 m to the expansion valve. The pressure drop due to friction in the liquid line is
20 kPa. In order to have no vapor in the refrigerant entering the expansion valve, what
is the maximum allowable temperature at that point? Ans. 35.3°C](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8dd4ff6c-73a4-4172-b778-0f507a10c246%2F8f022af2-63bd-4985-ad24-7da6da09f464%2Fgbgezep_processed.png&w=3840&q=75)
Transcribed Image Text:13-3 A refrigerant 22 refrigerating system operates with a condensing temperature of
35°C and an evaporating temperature of -10°C. If the vapor leaves the evaporator
saturated and is compressed isentropically, what is the COP of the cycle (a) if saturated
liquid enters the expansion device and (b) if the refrigerant entering the expansion de-
vice is 10 percent vapor as in Fig. 13-3? Ans. (a) 4.71, (b) 4.20
13-4 Refrigerant 22 at a pressure of 1500 kPa leaves the condenser and rises vertically
10 m to the expansion valve. The pressure drop due to friction in the liquid line is
20 kPa. In order to have no vapor in the refrigerant entering the expansion valve, what
is the maximum allowable temperature at that point? Ans. 35.3°C
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