Carbon dioxide enters a compressor at T1=271 K and P1=100 kPa with a mass flow rate of 0.61 kg/s. The pressure ratio and the isentropic efficiency of the compressor is 4.9 and 80% respectively. As shown in figure, carbon dioxide leaving the compressor is cooled to T3=360 K by a liquid water in a heat exchanger. If the inlet and outlet temperatures of the cooling water are T4=20°C and T5=43°C respectively, calculate the required mass flow rate of

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Carbon dioxide enters a compressor at T1=271 K and P1=100 kPa with a mass flow rate of
0.61 kg/s. The pressure ratio and the isentropic efficiency of the compressor is 4.9 and 80%,
respectively. AS shown in figure, carbon dioxide leaving the compressor is cooled to T3=360
K by a liquid water in a heat exchanger. If the inlet and outlet temperatures of the cooling
water are T4=20°C and T5=43°C respectively, calculate the required mass flow rate of
cooling water, in kg/s.
Properties of CO2: C,=0.895 kJ/(kgK), Cp=0.706 kJ/(kgK), R=0.1889 kJ/(kgK), k=1.268
Properties of water: C,=4.178 kJ/(kg°C)
Cooling water
(5
4)
CO2
(3)
Heat exchanger
Compressor
Transcribed Image Text:Carbon dioxide enters a compressor at T1=271 K and P1=100 kPa with a mass flow rate of 0.61 kg/s. The pressure ratio and the isentropic efficiency of the compressor is 4.9 and 80%, respectively. AS shown in figure, carbon dioxide leaving the compressor is cooled to T3=360 K by a liquid water in a heat exchanger. If the inlet and outlet temperatures of the cooling water are T4=20°C and T5=43°C respectively, calculate the required mass flow rate of cooling water, in kg/s. Properties of CO2: C,=0.895 kJ/(kgK), Cp=0.706 kJ/(kgK), R=0.1889 kJ/(kgK), k=1.268 Properties of water: C,=4.178 kJ/(kg°C) Cooling water (5 4) CO2 (3) Heat exchanger Compressor
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