Economizers and Air Preheaters General Considerations

For economizers and air preheaters on boilers and fired heaters, the pressure drop is normally limited to about 4 inches of water. For Heat Recovery Steam Generators at the back end of gas turbines, the pressure drop superimposed on the gas turbine is usually limited to about 15 to 20 inches of water.

The water flow in economizers should be from the bottom up allowing any steam that may be generated to bleed off the top.

12. June 2018 by sam
Categories: Waste Heat Recovery | Leave a comment

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