Water flows steadily through a well-insulated heat exchanger inside 1.5 cm.-diameter tubing. At the inlet of...

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Water flows steadily through a well-insulated heat exchanger inside 1.5 cm.-diameter tubing. At the inlet of one side of the heat exchanger, steam is flowing at a mass flow rate of 0.9 kg/s. The steam's temperature is 100°C and is saturated vapor. At the exit, the temperature and quality of the steam are 100°C and 0.05, respectively. On the other side of the heat exchanger, cooling water flows at constant pressure of 1 bar, entering at 10°C and exiting at 20°C. A. Determine the velocity of the steam at the exit, in m/s. B. Determine the mass flowrate of the cooling-water, in kg/s. C. Determine the rate of heat transfer between the streams in the heat exchanger, in kJ/s. D. Determine the entropy produced inside the heat exchanger, in kJ/kg.K. Water flows steadily through a well-insulated heat exchanger inside 1.5 cm.-diameter tubing. At the inlet of one side of the heat exchanger, steam is flowing at a mass flow rate of 0.9 kg/s. The steam's temperature is 100°C and is saturated vapor. At the exit, the temperature and quality of the steam are 100°C and 0.05, respectively. On the other side of the heat exchanger, cooling water flows at constant pressure of 1 bar, entering at 10°C and exiting at 20°C. A. Determine the velocity of the steam at the exit, in m/s. B. Determine the mass flowrate of the cooling-water, in kg/s. C. Determine the rate of heat transfer between the streams in the heat exchanger, in kJ/s. D. Determine the entropy produced inside the heat exchanger, in kJ/kg.K.

Answer rating: 100% (QA)

A The velocity of the steam at the exit can be calculated using the equation for the velocity of a fluid in a pipe v 4 A g D2 where v is the velocity ... View the full answer