Why would water condesate start forming in process steam lines?

this normally causes steam hammering

2 Answers

  • 1 decade ago
    Favorite Answer

    Condensate is formed in steam lines when steam is saturated and loses heat. Saturated steam is the steam whose temperature is the same as the boiling point of water at the pressure of the steam. Such steam immediately condenses on lose of heat.

    Superheated steam has temperature more than the boiling point of water at its pressure. So such steam does not condense till its superheat is lost. Hammering is caused by steam condensate in steam turbines. This is because of high velocity of steam. Condensate are water particles which also move with high velocity and impinge on the blades of the turbine like bullets causing hammering. This damages the turbine. To avoid it, highly superheated steam is used in it and its pressure and temperature are not allowed to reduce to a level where it will turn into saturated steam. Low pressure, low temperature exhaust steam of turbine also has some superheat left to avoid condensation and hammering.

    Summarizing, to answer the question, water condensate forms only in case of saturated steam due to loss of its heat due to radiation or transfer of heat to process fluid being heated. Such steam is used in heating application. Here, no hammering occurs due to condensate as the steam las low velocity in steam pipes.

  • 1 decade ago

    almost steam lines is used for tracing.in steam tracing is used for tranfering heat.it's easy when steam transfer the heat to another fluid , it will lose the termperature.and ...

    for solving the this priplem , they use STEAM TRAP to lead condensate to it's header.

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