The quality (dryness fraction) of steam in a steam main was determined by passing a sample of the steam first through a separator and then through a throttling calorimeter. Mass of water collected in separator 272 g/min Condensate from throttling calorimeter 9.08 kg/min Mains pressure 1.35 MPa Pressure after throttling 100 kPa Temperature after throttling 125 °C Determine the dryness fraction of the steam in the mains (a) Using the superheat tables (by interpolation) (b) Using the Mollier diagram (make a sketch to show your answer solution)
2. The quality (dryness fraction) of steam in a steam main was determined by passing a sample of the steam first through a separator and then through a throttling calorimeter. Mass of water collected in separator 272 g/min Condensate from throttling calorimeter 9.08 kg/min Mains pressure 1.35 MPa Pressure after throttling 100 kPa Temperature after throttling 125 C Determine the dryness fraction of the steam in the mains (a) Using the superheat tables (by interpolation) (b) Using the Mollier diagram (make a sketch to show your answer solution)