In a refrigerant 12 system which serves a 250 kw evaporator at -30°C. The system uses two stage compression with intercooling and removal of flash gas. The condenser temp is 40°C. h2 = 357 kJ/kg, h4 = 365 kJ/kg Compute the ff: - mass flow rate at low stage compressor (m1), answer must be in kg/s - mass flow rate at high stage compressor (m3), answer must be in kg/s - low stage compressor work, answer must be in kw
In a refrigerant 12 system which serves a 250 kw evaporator at -30°C. The system uses two stage compression with intercooling and removal of flash gas. The condenser temp is 40°C. h2 = 357 kJ/kg, h4 = 365 kJ/kg Compute the ff: - mass flow rate at low stage compressor (m1), answer must be in kg/s - mass flow rate at high stage compressor (m3), answer must be in kg/s - low stage compressor work, answer must be in kw
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
Chapter47: High-pressure, Low-pressure, And Absorption Chilled-water Systems
Section: Chapter Questions
Problem 13RQ: The subcooling temperature in a condenser can be measured by taking the difference between the A....
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In a refrigerant 12 system which serves a 250 kw evaporator at -30°C. The system uses two stage compression with intercooling and removal of flash gas. The condenser temp is 40°C.
h2 = 357 kJ/kg, h4 = 365 kJ/kg
Compute the ff:
- mass flow rate at low stage compressor (m1), answer must be in kg/s
- mass flow rate at high stage compressor (m3), answer must be in kg/s
- low stage compressor work, answer must be in kw
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