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Texts: A heat exchanger (condenser), using water vapor (in the hull) from the discharge of a turbine, at an absolute pressure of 10 cmHg, is to be used to heat 11,350 kg/h of seawater (cp = 0.95 kcal/kg·°C) from 15 to 43 °C. The exchanger must be dimensioned for one pass in the shell and 4 passes in the tubes, with 20 parallel circuits of brass tubes with 25 mm internal diameter and 28.5 mm external diameter (k = 90 kcal/h·m·°C). For the clean heat exchanger, the average heat transfer coefficients on the steam and water sides are estimated to be 3000 and 1500 kcal/h·m·°C, respectively. Calculate the pipe length required for service. Data: Steam condensation temperature at 10 cmHg = 51.7 °C Rf,i = Rf,o = 0.0001 h·m^2·°C/kcal (R: 11.3 m)

          Texts: A heat exchanger (condenser), using water vapor (in the hull) from the discharge of a turbine, at an absolute pressure of 10 cmHg, is to be used to heat 11,350 kg/h of seawater (cp = 0.95 kcal/kg·°C) from 15 to 43 °C. The exchanger must be dimensioned for one pass in the shell and 4 passes in the tubes, with 20 parallel circuits of brass tubes with 25 mm internal diameter and 28.5 mm external diameter (k = 90 kcal/h·m·°C). For the clean heat exchanger, the average heat transfer coefficients on the steam and water sides are estimated to be 3000 and 1500 kcal/h·m·°C, respectively. Calculate the pipe length required for service.

Data: Steam condensation temperature at 10 cmHg = 51.7 °C
Rf,i = Rf,o = 0.0001 h·m^2·°C/kcal (R: 11.3 m)

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