In a steam power plant, stream is to be condensed in the condenser at a temperature of 50°C and hfg = 2305 kJ/kg with cooling water of Cp = 4180 J/kg . °C, which enters the tubes of the condenser at 18°C and leaves at 27°C. The surface area of the tube is 58 m², and the overall heat transfer coefficient is 2400 W/m². °C. Determine the mass flow rate of the cooling water needed. Choose... Determine the rate of condensation of the steam in the condenser. Choose...

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Chapter7: Forced Convection Inside Tubes And Ducts
Section: Chapter Questions
Problem 7.46P
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In a steam power plant, stream is to be condensed in the condenser at a temperature of 50°C
and hfg=2305 kJ/kg with cooling water of Cp = 4180 J/kg . °C, which enters the tubes of the
condenser at 18°C and leaves at 27°C. The surface area of the tube is 58 m2, and the overall
heat transfer coefficient is 2400 W/m². °C.
Choose...
Determine the mass flow rate of the cooling water needed.
Determine the rate of condensation of the steam in the condenser.
Choose...
Choose...
1.65 kg/s
4.35 kg/s
heat
Water is heated from 21°C to 52°C by solar-heated air in a counter-flow
exchanger. Air enters through the outer annulus at 85°C at a rate of 0.35
through the inner tube at a rate of 0.15 kg/s. The inner and outer diame
Di=13 mm, Do=15 mm. The overall heat transfer coefficient based on the water stue surface area
175 kg/s
150 kg/s
3.85 kg/s
101 kg/s
er enters
tube are
Transcribed Image Text:of stion 2 ed out of In a steam power plant, stream is to be condensed in the condenser at a temperature of 50°C and hfg=2305 kJ/kg with cooling water of Cp = 4180 J/kg . °C, which enters the tubes of the condenser at 18°C and leaves at 27°C. The surface area of the tube is 58 m2, and the overall heat transfer coefficient is 2400 W/m². °C. Choose... Determine the mass flow rate of the cooling water needed. Determine the rate of condensation of the steam in the condenser. Choose... Choose... 1.65 kg/s 4.35 kg/s heat Water is heated from 21°C to 52°C by solar-heated air in a counter-flow exchanger. Air enters through the outer annulus at 85°C at a rate of 0.35 through the inner tube at a rate of 0.15 kg/s. The inner and outer diame Di=13 mm, Do=15 mm. The overall heat transfer coefficient based on the water stue surface area 175 kg/s 150 kg/s 3.85 kg/s 101 kg/s er enters tube are
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