A refrigeration system uses R-12 and it operates between evaporator and condenser temperature of -20°C and 40°C respectively. The system is to be used in producing 4000 kg of ice at -15°C from water at 30°C in 20 hrs., and the system uses two-stage compression with intercooler (flash tank). Draw schematic and ph diagram and compute: a) Refrigerating Effect b) mass flow rate of refrigerant entering LSC c) mass flow rate of refrigerant entering HSC d) Low stage compressor work e) High stage compressor work ) cOP 8) heat rejected in the condenser h) mass flow rate of cooling water in the condenser for a temperature difference of 30°F.
A refrigeration system uses R-12 and it operates between evaporator and condenser temperature of -20°C and 40°C respectively. The system is to be used in producing 4000 kg of ice at -15°C from water at 30°C in 20 hrs., and the system uses two-stage compression with intercooler (flash tank). Draw schematic and ph diagram and compute: a) Refrigerating Effect b) mass flow rate of refrigerant entering LSC c) mass flow rate of refrigerant entering HSC d) Low stage compressor work e) High stage compressor work ) cOP 8) heat rejected in the condenser h) mass flow rate of cooling water in the condenser for a temperature difference of 30°F.
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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A refrigeration system uses R-12 and it operates between evaporator and
condenser temperature of -20°C and 40°C respectively. The system is to be
used in producing 4000 kg of ice at -15°C from water at 30°C in 20 hrs., and
the system uses two-stage compression with intercooler (flash tank). Draw
schematic and ph diagram and compute:
a) Refrigerating Effect
b) mass flow rate of refrigerant entering LSC
c) mass flow rate of refrigerant entering HSC
d) Low stage compressor work
e) High stage compressor work
) cOP
8) heat rejected in the condenser
h) mass flow rate of cooling water in the condenser for a temperature
difference of 30°F.
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VIEWStep 2: Calculation of flash tank pressure and the schematic diagram of the cycle
VIEWStep 3: a) Calculation of the Refrigerating effect
VIEWStep 4: b) Calculation of mass flow rate of the refrigerant in low pressure cycle
VIEWStep 5: c) Calculation of mass flow rate in high pressure cycle
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