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In a refrigerant 11 system, one evaporator is to provide 256 kw of refrigerant at 0°C and another evaporator is to provide 228 kw at -20°C. The system uses two stage compression with intercooling and removal of flash gas. The condenser temp is 40°C. h2 = 393 kJ/kg, h4 = 412 kJ/kg Compute the ff: a. mass flow rate at low stage compressor (m1), answer must be in kg/s b. mass flow rate at high stage compressor (m3), answer must be in kg/s c. low stage compressor work, answer must be in kw

In a refrigerant 11 system, one evaporator is to provide 256 kw of refrigerant at 0°C and another evaporator is to provide 228 kw at -20°C. The system uses two stage compression with intercooling and removal of flash gas. The condenser temp is 40°C. h2 = 393 kJ/kg, h4 = 412 kJ/kg Compute the ff: a. mass flow rate at low stage compressor (m1), answer must be in kg/s b. mass flow rate at high stage compressor (m3), answer must be in kg/s c. low stage compressor work, answer must be in kw

Refrigeration and Air Conditioning Technology (MindTap Course List)
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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In a refrigerant 11 system, one evaporator is to provide 256 kw of refrigerant at 0°C and another evaporator is to provide 228 kw at -20°C. The system uses two stage compression with intercooling and removal of flash gas. The condenser temp is 40°C.

h2 = 393 kJ/kg, h4 = 412 kJ/kg

Compute the ff:
a. mass flow rate at low stage compressor (m1), answer must be in kg/s
b. mass flow rate at high stage compressor (m3), answer must be in kg/s
c. low stage compressor work, answer must be in kw

In a Refrigerant 11 system ,one evaporator is to provide 256 kw of refrigerant at 0 °C and another evaporator is to provide 228 kw at -20 °C. The system uses two stage compression with intercooling and removal of flash gas. The condenser temp is 40°C. Compute: h2=393kJ/kg, h4=412KJ/kg mass flow rate at low stage compressor (m1) kg/s mass flow rate at high stage compressor (m3) kg/s low stage compressor work
Transcribed Image Text:In a Refrigerant 11 system ,one evaporator is to provide 256 kw of refrigerant at 0 °C and another evaporator is to provide 228 kw at -20 °C. The system uses two stage compression with intercooling and removal of flash gas. The condenser temp is 40°C. Compute: h2=393kJ/kg, h4=412KJ/kg mass flow rate at low stage compressor (m1) kg/s mass flow rate at high stage compressor (m3) kg/s low stage compressor work
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