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Congratulations MintJulep on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!
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Prevalence of hydrocarbon weights in sweet crude?
Why is crude oil refined into only three grades for vehicles (heptane, octane, and "diesel")? Actually a lot more components are used. Heptane and octane are just reference points for the "quality", specifically normal-heptane and a specific iso-octane (2,2,4-trimethylpentane). The mixing of...- Tauwen
- Post #4
- Forum: Petroleum refining engineering
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Heat Transfer of Gas Flow in Tubular Furnace
ahh... I forgot: if the inlet - outlet temperature difference of the tubular furnace is significant than you must recalculate the temp dependent properties of the gas and everything depending on them for the segments.- Tauwen
- Post #3
- Forum: Chemical process development
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Heat Transfer of Gas Flow in Tubular Furnace
For some reason I can't see the picture with the used formulas, so some guidelines in general for solving it with minimal software background: - You need to calculate the heat transfer properties (e.g.: h.t.coef.) - choose a small length fraction and calculate heat transfer assuming that the gas...- Tauwen
- Post #2
- Forum: Chemical process development
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Gas-Liquid transport in ducts
There are too many "unknowns" to give a good answer. The fluid is some kind of homogeneous mist or the liquid is in bigger droplets? How turbulent is the flow? Is it a straight pipe line? Is there any liquid segregation? Ect... Maybe if you share more data or the reason why do you need the...- Tauwen
- Post #5
- Forum: Chemical process engineering
