In an industrial nozzle, steam is expanded from 260C and 7.00 bar absolute to 200C and...

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In an industrial nozzle, steam is expanded from 260C and 7.00 bar absolute to 200C and 4.00 bar absolute. The heat transferred from the nozzle to the surroundings is given as 42.4 kJ/kg. The steam inlet velocity is negligible. The specific enthalpy values for steam are given as 2970 kJ/kg at 260C and 2856 kJ/kg at 200C. (1) (ii) Calculate the exit steam velocity using open system energy balance. [20 marks] Calculate the exit steam velocity for the same conditions when the change in potential energy is given as 422 kJ/kg. [5 marks] In an industrial nozzle, steam is expanded from 260C and 7.00 bar absolute to 200C and 4.00 bar absolute. The heat transferred from the nozzle to the surroundings is given as 42.4 kJ/kg. The steam inlet velocity is negligible. The specific enthalpy values for steam are given as 2970 kJ/kg at 260C and 2856 kJ/kg at 200C. (1) (ii) Calculate the exit steam velocity using open system energy balance. [20 marks] Calculate the exit steam velocity for the same conditions when the change in potential energy is given as 422 kJ/kg. [5 marks]

Answer rating: 100% (QA)

To calculate the exit steam velocity using an open system energy balance we can apply the principle of conservation of energy The energy balance equat... View the full answer