RON a+bT+cT'+dT' +eT* (2) (RON ONOOO Where RON is the clear research octane number and T (Tb-273.15)/100 in which Tb is the boiling point in kelvin. Based on the data taken from the API-TDB, the coefficients a- e were determined and are given in Table below: Coefficients of cq. 2 for estimation of RON P. Hydrocarbon family n-Paraffins isoparaffins 2-Methyl-pentanes 3-Methyl-pentanes 2,2-Dimethyl-pentanes 2,3-Dimethyl-pentanes Naphthenes Aromatics 92.809 -70.97 -53 20 10 -600 200 95.927 92.069 109.38 97.652 -77.536 145.668 -157.53 57.63 -38.83 -20.8 471.59 -54.336 561 -65 -26 58 -418 16.276 0. -200 100 100 Example: A naphtha sample from an Australian crude oil has the following characteristics: boiling point range 15.5 70 C specific gravity 0.6501, n-paraffins 49.33%, isoparaffins 41.45%, naphthenes 9.14%, aromatics 0.08%, clear RON 69.6, and MON 66.2. a) Estimate RON from the pseudo component method using experimental composition
RON a+bT+cT'+dT' +eT* (2) (RON ONOOO Where RON is the clear research octane number and T (Tb-273.15)/100 in which Tb is the boiling point in kelvin. Based on the data taken from the API-TDB, the coefficients a- e were determined and are given in Table below: Coefficients of cq. 2 for estimation of RON P. Hydrocarbon family n-Paraffins isoparaffins 2-Methyl-pentanes 3-Methyl-pentanes 2,2-Dimethyl-pentanes 2,3-Dimethyl-pentanes Naphthenes Aromatics 92.809 -70.97 -53 20 10 -600 200 95.927 92.069 109.38 97.652 -77.536 145.668 -157.53 57.63 -38.83 -20.8 471.59 -54.336 561 -65 -26 58 -418 16.276 0. -200 100 100 Example: A naphtha sample from an Australian crude oil has the following characteristics: boiling point range 15.5 70 C specific gravity 0.6501, n-paraffins 49.33%, isoparaffins 41.45%, naphthenes 9.14%, aromatics 0.08%, clear RON 69.6, and MON 66.2. a) Estimate RON from the pseudo component method using experimental composition
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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