October 2018

Heat Transfer

Methodology for model-based, real-time prediction of corrosion in heat exchangers

In the chemical and process industries, gases or vapor mixtures must be cooled to temperatures near the water dewpoint in a variety of thermal unit operations.

Holzer, G., Jeitler, E., Prozess Optimal CAP GmbH

In the chemical and process industries, gases or vapor mixtures must be cooled to temperatures near the water dewpoint in a variety of thermal unit operations. Such mixtures often contain substances that develop corrosive characteristics if the temperature falls below the water dewpoint. In that case, depending on the gas composition, acids can be produced and may cause severe damage to a heat exchanger. This kind of corrosion, called pitting, may remain undetected for a long time and ultimately lead to sudden equipment failure. FIG. 1. Example of a rigorous, CFD-based heat exchanger calculation. One strategy to avoid pitting is to use corrosio

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