Tag: API 661
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Is My Design OK? Applying API 661 Annex C to Air-Cooled Heat Exchanger Designs with Viscous and High Pour Point Fluids
January 16, 2017
Winterization in accordance with API 661 Annex C may need to be considered by designers when air-cooled heat exchangers are operating in climatic extremes. In order to prevent operating problems in-situ, a temperature safety margin should be added to the critical process temperature to determine the specified minimum tubewall temperature. For...
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AC-16 First Adaptation of Stream Analysis Method for Air-Cooled Heat Exchangers
January 16, 2017
A new Stream Analysis Method option is available in Xace® 6 to model flow bypassing in air-cooled heat exchangers with larger gaps at the edge of the bundle than those required by the API 661/ISO 13706-1:2005 standard. The heat transfer and pressure drop of the bundle can be less than predicted...
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