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16-4 A refrigerant 22 system has a capacity of 180 kW at an evaporating temperature of -30°C when the condensing pressure is 1500 kPa. (e) Compute the power requirement for a system with a single compressor. (b) Compute the total power required by the two compressors in the system shown in Fig. 16-17 where there is no intercooling but there is flash-gas removal at 600 kPa. Ans. 60.7 kW

16-4 A refrigerant 22 system has a capacity of 180 kW at an evaporating temperature of -30°C when the condensing pressure is 1500 kPa. (e) Compute the power requirement for a system with a single compressor. (b) Compute the total power required by the two compressors in the system shown in Fig. 16-17 where there is no intercooling but there is flash-gas removal at 600 kPa. Ans. 60.7 kW

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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Multipressure Systems

16-4 A refrigerant 22 system has a capacity of 180 kW at an evaporating temperature of -30°C when the condensing pressure is 1500 kPa. (a) Compute the power requirement for a system with a single compressor. (b) Compute the total power required by the two compressors in the system shown in Fig. 16-17 where there is no intercooling but there is flash-gas removal at 600 kPa. Ans. 60.7 kW Condenser 1500 kPa 5 600 kPa 3 Flash-gas compressor Evaporator 180 kW -30°C Figure 16-17 Flash-gas removal system in Prob. 16-4. 2 Evaporator compressor
Transcribed Image Text:16-4 A refrigerant 22 system has a capacity of 180 kW at an evaporating temperature of -30°C when the condensing pressure is 1500 kPa. (a) Compute the power requirement for a system with a single compressor. (b) Compute the total power required by the two compressors in the system shown in Fig. 16-17 where there is no intercooling but there is flash-gas removal at 600 kPa. Ans. 60.7 kW Condenser 1500 kPa 5 600 kPa 3 Flash-gas compressor Evaporator 180 kW -30°C Figure 16-17 Flash-gas removal system in Prob. 16-4. 2 Evaporator compressor
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