Homework Help is Here – Start Your Trial Now!
Engineering
Chemical Engineering
Cetane index (CI) is a quality indicator for diesel fuel. It can be calculated based on the distillation characteristics and density according to ASTM D976. ASTM D976 Cetane Index = 454.74 – 1641.416 D + 774.74 D² – 0.554 T5o + 97.803 (log Ts0)² where D: Density at 15 °C, g/mL Tso: The temperature at which 50% of the fuel evaporates, °C The density and distillation temperature for 2 diesel samples are tabulated Table 3. Calculate the CI of these samples. Table 3 D, g/mL Sample 1 2 CI 51.938 32.521 T50, °C 0.8491 0.9210 290 290 ) Briefly explain the relationships between the index and the sample characteristics. (ii) Explain the changes in the CI values for both samples in relation to the density and the auto-ignition characteristics.

Cetane index (CI) is a quality indicator for diesel fuel. It can be calculated based on the distillation characteristics and density according to ASTM D976. ASTM D976 Cetane Index = 454.74 – 1641.416 D + 774.74 D² – 0.554 T5o + 97.803 (log Ts0)² where D: Density at 15 °C, g/mL Tso: The temperature at which 50% of the fuel evaporates, °C The density and distillation temperature for 2 diesel samples are tabulated Table 3. Calculate the CI of these samples. Table 3 D, g/mL Sample 1 2 CI 51.938 32.521 T50, °C 0.8491 0.9210 290 290 ) Briefly explain the relationships between the index and the sample characteristics. (ii) Explain the changes in the CI values for both samples in relation to the density and the auto-ignition characteristics.

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
See similar textbooks
icon
Related questions
Question

Answer questions (i) and (ii)

Cetane index (CI) is a quality indicator for diesel fuel. It can be calculated based on the distillation characteristics and density according to ASTM D976. ASTM D976 Cetane Index = 454.74 – 1641.416 D + 774.74 D² – 0.554 T50 + 97.803 (log T50)? where D: Density at 15 °C, g/mL Tso: The temperature at which 50% of the fuel evaporates, °C The density and distillation temperature for 2 diesel samples are tabulated Table 3. Calculate the CI of these samples. Table 3 Sample D, g/mL T50, °C CI 1 290 51.938 0.8491 0.9210 290 32.521 (i) Briefly explain the relationships between the index and the sample characteristics. (ii) Explain the changes in the CI values for both samples in relation to the density and the auto-ignition characteristics.
Transcribed Image Text:Cetane index (CI) is a quality indicator for diesel fuel. It can be calculated based on the distillation characteristics and density according to ASTM D976. ASTM D976 Cetane Index = 454.74 – 1641.416 D + 774.74 D² – 0.554 T50 + 97.803 (log T50)? where D: Density at 15 °C, g/mL Tso: The temperature at which 50% of the fuel evaporates, °C The density and distillation temperature for 2 diesel samples are tabulated Table 3. Calculate the CI of these samples. Table 3 Sample D, g/mL T50, °C CI 1 290 51.938 0.8491 0.9210 290 32.521 (i) Briefly explain the relationships between the index and the sample characteristics. (ii) Explain the changes in the CI values for both samples in relation to the density and the auto-ignition characteristics.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Recommended textbooks for you
Introduction to Chemical Engineering Thermodynami…
Introduction to Chemical Engineering Thermodynami…
Chemical Engineering
ISBN:
9781259696527
Author:
J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:
McGraw-Hill Education
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemical Engineering
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY
Elements of Chemical Reaction Engineering (5th Ed…
Elements of Chemical Reaction Engineering (5th Ed…
Chemical Engineering
ISBN:
9780133887518
Author:
H. Scott Fogler
Publisher:
Prentice Hall
Process Dynamics and Control, 4e
Process Dynamics and Control, 4e
Chemical Engineering
ISBN:
9781119285915
Author:
Seborg
Publisher:
WILEY
Industrial Plastics: Theory and Applications
Industrial Plastics: Theory and Applications
Chemical Engineering
ISBN:
9781285061238
Author:
Lokensgard, Erik
Publisher:
Delmar Cengage Learning
Unit Operations of Chemical Engineering
Unit Operations of Chemical Engineering
Chemical Engineering
ISBN:
9780072848236
Author:
Warren McCabe, Julian C. Smith, Peter Harriott
Publisher:
McGraw-Hill Companies, The
SEE MORE TEXTBOOKS