Heat Transfer Coefficients 3

[MaNaTMoS]

Where can I find detailed tables for heat transfer coefficients in ADU and VDU heat exchangers services? This data should include values from all streams (products), along with steam/water side coefficients in steam reboilers and water cooled exchangers. Condensing and vaporizing hydrocarbon services are very important. Units [W/m2*C] are preffered.

Thanks in advance.

 

[rmw]

Check

http://www.processassociates.com

first, and if what you are looking for is not there, post back, and we will try some more.

rmw

 

[quark]

http://www.cheresources.com/uexchangers.shtml

Just go to

http://www.cheresources.com

and search for heat transfer coefficients to get many good papers.

Regards,

 

[25362]

Some typical OHTCs in oil refining taken from the literature are given herebelow. I'm sorry but the values are in BTU/(h.ft².^oF). The job of conversion by multiplying the data by 5.6784 to obtain W/(m².K) rests with you.

crude vs naphtha pumparound 70-80
crude vs kero 70-75
crude vs gas oil 40-50
crude vs reduced crude 20-30
crude vs vacuum distillates 30-40
crude vs bitumen 20
crude vs CDU overheads 80-90
crude vs crude tower overheads 50
debutanizer feed vs debutanizer bottoms 75

debutanizer bottoms vs CT water 75
light naphtha vs CT water 80
gasoils vs CT water 40
reduced crude vs CT water 30

CDU overhead vs CT water 65
debutanizer overhead vs CT water 90

naphtha air cooler 23
debutanizer bottoms air cooler 30
light ends overhead air cooler 40

For reboilers of hydrocarbons heat fluxes are used ,BTU/h/ft², which when multiplied by 3.1546 will give W/m².

18 in. bundles 20 000
30 in. bundles 17 500
>30 in. bundles 15 000

Hope these data are useful.

 

[MaNaTMoS]

Some of the given values are varying +/-50%. I suppose they were written for absolute clean exchangers? What is the (average) level of confidence for all of them?