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    TYPICAL OVERALL HEAT TRANSFER COEFFICIENTS (U - VALUES)


     
    Shell and Tube Heat Exchangers     Hot Fluid Cold Fluid U [W/m2C]

    Heat ExchangersWaterWater800 - 1500
    Organic solvents   Organic Solvents   100 - 300
    Light oilsLight oils100 - 400
    Heavy oilsHeavy oils50 - 300
    Reduced crudeFlashed crude35 - 150
    Regenerated DEAFoul DEA450 - 650
    Gases (p = atm)Gases (p = atm)5 - 35
    Gases (p = 200 bar)Gases (p = 200 bar)100 - 300
     
    CoolersOrganic solventsWater250 - 750
    Light oilsWater350 - 700
    Heavy oilsWater60 - 300
    Reduced crudeWater75 - 200
    Gases (p = atm)Water5 - 35
    Gases (p = 200 bar) Water150 - 400
    GasesWater20 - 300
    Organic solventsBrine150 - 500
    WaterBrine600 - 1200
    GasesBrine15 - 250
     
    HeatersSteamWater1500 - 4000
    SteamOrganic solvents500 - 1000
    SteamLight oils300 - 900
    SteamHeavy oils60 - 450
    SteamGases30 - 300
    Heat Transfer (hot) OilHeavy oils50 - 300
    Heat Transfer (hot) OilGases20 - 200
    Flue gasesSteam30 - 100
    Flue gasesHydrocarbon vapours30 -100
     
    CondensersAqueouos vapoursWater1000 - 1500
    Organic vapoursWater700 - 1000
    Refinery hydrocarbonsWater400 - 550
    Vapours with some non condensiblesWater500 - 700
    Vacuum condensersWater200 - 500
     
    Vaporisers
    SteamAqueouos solutions1000 - 1500
    SteamLight organics900 - 1200
    SteamHeavy organics600 - 900
    Heat Transfer (hot) oilRefinery hydrocarbons250 - 550

     
     
    Air Cooled Exchangers Process Fluid U [W/m2C]

    Water300 - 450
    Light organics300 - 700
    Heavy organics50 - 150
    Gases50 - 300
    Condensing hydrocarbons300 - 600

     
     
    Immersed coils Coil Pool U [W/m2C]

    Natural circulationSteamDilute aqueouos solutions500 - 1000
    SteamLight oils200 - 300
    SteamHeavy oils70 - 150
    Aqueouos solutionsWater200 - 500
    Light oilsWater100 - 150
     
    AgitatedSteamDilute aqueouos solutions800 - 1500
    SteamLight oils300 - 500
    SteamHeavy oils200 - 400
    Aqueouos solutionsWater400 - 700
    Light oilsWater200 - 300

     
     
    Jacketed vessels Jacket Vessel U [W/m2C]

    SteamDilute aqueouos solutions500 - 700
    SteamLight organics250 - 500
    WaterDilute aqueouos solutions200 - 500
    WaterLight organics200 - 300



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