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Shell and tube type condensor
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Shell and tube type condensor

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  • 1. FABRICATION OF SHELL AND TUBE TYPE CONDENSER
  • 2.  Introduction  Objects & advantages of condenser  Lay out of steam condensing plant  Types of condenser  Explanation about shell & tube condenser  Selection of material  Properties of material  Parts required
  • 3.  A steam Condenser is a closed vessel into which the steam is exhausted, and condensed after doing work in an engine cylinder or turbine.”  Steam condenser is a device in which the exhaust steam from the steam turbine is condensed by means of cooling tower.
  • 4.  The primary object is to maintain a low pressure so as to obtain the maximum possible energy from steam and thus securing a high efficiency.  The secondary object is to supply pure feed water to the hot well.
  • 5.  It reduces temperature of the exhaust steam, and thus more work can be obtained.  Reuse of condensate as feed water for boiler reduces the cost of power generation.  The temperature of the condensate is higher than that of fresh water therefore the amount of heat supplied per kg of steam is reduced.
  • 6. Boiler steam Steam turbine Water inlet Water Outlet Condensate outlet
  • 7.  Jet condensers or Mixing type condenser  Surface Condensers or Non-mixing type condenser.
  • 8.  Parallel flow jet condenser,  Counter flow or Low level jet condenser,  Barometric or High level jet condenser,  Ejector condenser.
  • 9.  Shell & tube condenser  Evaporative condenser.  
  • 10.  Among all those types we have decided to make design, fabrication & assembly of shell & tube type surface condenser.
  • 11.  The coolant water passes through a system of condenser tubes. They are positioned in the main shell.  Steam is admitted to the top of the condenser & is removed as condensate from the bottom having condensed at the surface of the water tubes.  Cooling water flows in a bottom & out at the top of the condenser.  Inlet & exit in this case both at the same end of the condenser & hence water makes two passes through a condenser.
  • 12. -:Assembly Drawing Of Condenser:-
  • 13.  For fabricating & assembly of condenser we have basically selected two types of material. Copper Mild steel
  • 14.  Excellent Resistance to corrosion  Non magnetic properties  Moderate to high hardness and strength  High thermal and electrical conductivity  Can be easily polished  Very good machinability  Ease of forming alloys with other elements like Zn ,Sn, Al, Pb, Si, Ni etc.
  • 15.  It is weldable.  It is durable.  It is hard.  Poor resistance to corrosion  Less brittle
  • 16.  Shell  Tubes  Flange  Coupling  Nut & bolts (STD)  Gasket
  • 17. Copper tubes shell flange Nut & bolt

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