The main Application of heat transfer mechanisms in a surface condenser is the condensing of saturated steam or Vapour on the outside of the tubes of the condenser which is done by circulating Chilled water or Cooling water inside the tubes of the condenser.

Due to the fact that a surface condenser operates under vacuum, non-condensable gases will migrate towards the condenser. The non-condensable gases consist of mostly air that has leaked into the cycle from components that are operating below atmospheric pressure.

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