HINTS AND RULES / HEAT EXCHANGERS
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Heat Exchangers

  1. Take true countercurrent flow in a shell and tube exchanger as the basis for comparison.

  2. Tubeside is for corrosive, fouling, scaling and high pressure fluids.

  3. Shellside is for viscous and condensing fluids.

  4. Pressure drops are 1.5 psi for boiling liquids and 3-9 psi for other services.

  5. Double pipe exchangers are competitive at duties requiring 100-200 ft¾.

  6. Plate and frame exchangers are suited to sanitary service, and, in stainless steel, are 25-50% cheaper than shell and tube units.

HINTS AND RULES
Drying and SolidsConveyors for Particular SolidsCooling TowersCompressors and Vacuum PumpsCrushing and Grinding
Extraction, Liquid-LiquidCrystallatisation from SolutionFiltrationHeat ExchangersMixing and Agitation
Particle Size EnlargementpipingPumpsReactorsRefrigeration
Size Seperation of ParticlesUtilities, Common SpecificationsVessels (Storage Tanks)

The information is arranged by commonly recognised categories. In some instances, definitions and general statements have been included for clarity.