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(1) In an ammonia refrigeration system, the capacity is 210 kW at a temperature of-20°C. The vapor from the evaporator is pumped by one compressor to the condensing pressure of 1431 kPa. Later, the system was revised to a two-stage compression operating on the cycle shown below with intercooling but no removal of flash at 555 kPa. (a) in the original system. (b) compressors in the revised system. Calculate the power required by the single compressor Calculate the total power required by the two-

(1) In an ammonia refrigeration system, the capacity is 210 kW at a temperature of-20°C. The vapor from the evaporator is pumped by one compressor to the condensing pressure of 1431 kPa. Later, the system was revised to a two-stage compression operating on the cycle shown below with intercooling but no removal of flash at 555 kPa. (a) in the original system. (b) compressors in the revised system. Calculate the power required by the single compressor Calculate the total power required by the two-

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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Solve the following problems: Note: Draw the p-h diagram completely labeling the respective refrigerant conditions (pressures and temperatures) and define the properties of refrigerant (enthalpies and specific volume) needed to solve the respective problems. In an ammonia refrigeration system, the capacity is (1) 210 kW at a temperature of-20°C. The vapor from the evaporator is pumped by one compressor to the condensing pressure of 1431 kPa. Later, the system was revised to a two-stage compression operating on the cycle shown below with intercooling but no removal of flash at 555 kPa. (а) Calculate the power required by the single compressor in the original system. (b) Calculate the total power required by the two compressors in the revised system. Condenser 1431kPa High-stage compressor Intercooler 555kPa Evaporator 2í0kW -20°C Low-stage compresaor
Transcribed Image Text:Solve the following problems: Note: Draw the p-h diagram completely labeling the respective refrigerant conditions (pressures and temperatures) and define the properties of refrigerant (enthalpies and specific volume) needed to solve the respective problems. In an ammonia refrigeration system, the capacity is (1) 210 kW at a temperature of-20°C. The vapor from the evaporator is pumped by one compressor to the condensing pressure of 1431 kPa. Later, the system was revised to a two-stage compression operating on the cycle shown below with intercooling but no removal of flash at 555 kPa. (а) Calculate the power required by the single compressor in the original system. (b) Calculate the total power required by the two compressors in the revised system. Condenser 1431kPa High-stage compressor Intercooler 555kPa Evaporator 2í0kW -20°C Low-stage compresaor
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