Rule-of-thumb to gage suitability of Plate-Heat-Exchanger in Fluid-Contains-solid or Slurry

Plate Heat Exchanger having narrow channel most probably "not recommended" for fluid contains solid and/or slurry services. However, there are still many success story of using PHE in abovementioned services.

There are some rule-of-thumbs to gage if a plate heat exchanger suitable for fluid contains solid or slurry :

i) 80% of the particles are less than 70% of the interplate gap on the heat exchanger.

ii) 100% of the particles are less than 90% of the interplate gap

iii) Flowing velocity is below erosional velocity (causes premature plate failure)

iv) The minimum wall temperature is above a point where crystal growth is expected.

Further reading

• What type of heat exchanger can be used to handle fluid with solid ?
• FAYF - Heat Transfer - Useful Heat Transfer Equation
• Do Not Overspecified Fouling Factor s for PHE
• Why Lower Fouling in Plate Heat Exchanger ?
• Heat Exchanger Fouling Mechanism, Prevention and Treatment

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