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A two stage compressor using NH, is to operate with 54.74 kPa evaporative pressure, 384.26 kPa interstage pressure and 1472.4 kPa condenser pressure. The discharge vapour from the low pressure cylinder is cooled to 32°C with water. The vapour from the flash tank mixes with the vapour from the intercooler before entering the high pressure cylinder. The capacity is 10 tons. CONDENSER HIGHSTAGE COMPRESSO FLOAT INTERCOOLE 10 EVAPORATOR LOWSTAGE COMPRESSO 5. Find the enthalpy of the refrigerant before entering the high stage compressor. C. 1675.82 kJ/kg A. 1431.83 kJ/kg B. 1531.75KJ/kg D. 1841.72 kJ/kg

A two stage compressor using NH, is to operate with 54.74 kPa evaporative pressure, 384.26 kPa interstage pressure and 1472.4 kPa condenser pressure. The discharge vapour from the low pressure cylinder is cooled to 32°C with water. The vapour from the flash tank mixes with the vapour from the intercooler before entering the high pressure cylinder. The capacity is 10 tons. CONDENSER HIGHSTAGE COMPRESSO FLOAT INTERCOOLE 10 EVAPORATOR LOWSTAGE COMPRESSO 5. Find the enthalpy of the refrigerant before entering the high stage compressor. C. 1675.82 kJ/kg A. 1431.83 kJ/kg B. 1531.75KJ/kg D. 1841.72 kJ/kg

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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Problem #02. A two stage compressor using NH3 is to operate with 54.74 kPa evaporative pressure, 384.26 kPa interstage pressure and 1472.4 kPa condenser pressure. The discharge vapour from the low pressure cylinder is cooled to 32°C with water. The vapour from the flash tank mixes with the vapour from the intercooler before entering the high pressure cylinder. The capacity is 10 tons. CONDENSER HIGH STAGE COMPRESSO W, B wFLASH FLOAT INTERCOOLE 10 EVAPORATOR LOW-STAGE COMPRESSO 5. Find the enthalpy of the refrigerant before entering the high stage compressor. A. 1431.83 kJ/kg B. 1531.75kJ/kg 6. Compute the rate of circulation of ammonia in kg/min. A. 0.3141 kg/min. 7. Find the theoretical power of the low stage compressor. A. 9.382 kw 8. Find the theoretical power of the high stage compressor. A. 6.543 kw 9. Find the cOP. A. 2.305 C. 1675.82 kJ/kg D. 1841.72 kJ/kg B. 2.053kg/min. C. 2.504 kg/min. D. 4.315kg/min. B. 8.543 kw C. 7.543 kw D. 6.453 kw B. 7.401 kw C. 7.893 kw D. 8.752 kw B. 2.893 C. 3.517 D. 4.503
Transcribed Image Text:Problem #02. A two stage compressor using NH3 is to operate with 54.74 kPa evaporative pressure, 384.26 kPa interstage pressure and 1472.4 kPa condenser pressure. The discharge vapour from the low pressure cylinder is cooled to 32°C with water. The vapour from the flash tank mixes with the vapour from the intercooler before entering the high pressure cylinder. The capacity is 10 tons. CONDENSER HIGH STAGE COMPRESSO W, B wFLASH FLOAT INTERCOOLE 10 EVAPORATOR LOW-STAGE COMPRESSO 5. Find the enthalpy of the refrigerant before entering the high stage compressor. A. 1431.83 kJ/kg B. 1531.75kJ/kg 6. Compute the rate of circulation of ammonia in kg/min. A. 0.3141 kg/min. 7. Find the theoretical power of the low stage compressor. A. 9.382 kw 8. Find the theoretical power of the high stage compressor. A. 6.543 kw 9. Find the cOP. A. 2.305 C. 1675.82 kJ/kg D. 1841.72 kJ/kg B. 2.053kg/min. C. 2.504 kg/min. D. 4.315kg/min. B. 8.543 kw C. 7.543 kw D. 6.453 kw B. 7.401 kw C. 7.893 kw D. 8.752 kw B. 2.893 C. 3.517 D. 4.503
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