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

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter22: Condensers

Section: Chapter Questions

Problem 7RQ: When a standard-efficiency air-cooled condenser is used, the condensing refrigerant will normally be...

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