Category Archives for Monitoring

Evaluating a Heat Exchanger

Figure 1100-6 shows the mechanical and operating data needed to evaluate a typical heat exchanger. The specific case chosen is a crude unit crude/vacuum residuum exchanger. Mechanical data should not change much with time. It is good procedure, however, to … Continue reading

05. April 2018 by Ben
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Heat Exchanger Pressure Drop

Pressure drop from uniform fouling is usually small and not likely to cause a hydraulic limit. If pressure drop increases rapidly, it is most likely due to a localized restriction created by deposition of solids in the feed or possibly … Continue reading

05. April 2018 by Ben
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Heat Transfer Efficiency

One measure of performance is the overall heat transfer coefficient, Us, as defined by the equation: Us = Q / ( A × MTD ) where: Us = Heat transfer coefficient, Btu/hr×ft2 MTD = Mean temperature difference, °F Q = … Continue reading

05. April 2018 by Ben
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Heat Exchanger Monitoring

Understanding past and current performance of heat exchangers and being able to predict future performance are important for: • Maintenance planning • Troubleshooting • Process improvements Before shutdown, Operations must decide which exchangers should be cleaned. A good monitoring program … Continue reading

05. April 2018 by Ben
Categories: Monitoring | Comments Off on Heat Exchanger Monitoring