2,5-Dimethylfuran (DMF), which can be made from cellulosic biomass, has been suggested as a possible liquid transportation fuel. DMF has 40% greater energy density by mass than ethanol based on HHV. DMF is C6H8O. Compare the LHV of dimethylfuran and ethanol on a weight and volume basis. Use the data in Table 2.4 for ethanol. The specific gravity of DMF is 0.9
2,5-Dimethylfuran (DMF), which can be made from cellulosic biomass, has been suggested as a possible liquid transportation fuel. DMF has 40% greater energy density by mass than ethanol based on HHV. DMF is C6H8O. Compare the LHV of dimethylfuran and ethanol on a weight and volume basis. Use the data in Table 2.4 for ethanol. The specific gravity of DMF is 0.9
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
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2,5-Dimethylfuran (DMF), which can be made from cellulosic biomass, has been suggested as a possible liquid transportation fuel. DMF has 40% greater energy density by mass than ethanol based on HHV. DMF is C6H8O. Compare the LHV of dimethylfuran and ethanol on a weight and volume basis. Use the data in Table 2.4 for ethanol. The specific gravity of DMF is 0.9
Transcribed Image Text:TABLE 2.4
Typical Properties of Automotive Fuels
Property
Chemical formula
Molecular weight
Specific gravity at 16°C
Kinematic viscosity at 20°C (m²/s)
Boiling point range (°C)
Reid vapor pressure (kPa)
Flash point (°C)
Autoignition temp (°C)
Octane No. (Research)
Octane No. (Motor)
Cetane No.
Stoichiometric air-fuel ratio by weight
Carbon content (wt%)
Hydrogen content (wt%)
Oxygen content (wt%)
Heat of vaporization (kJ/kg)
LHV (MJ/kg)
Automotive
Gasoline
C4 to C₁2
100-105
0.72-0.78
0.8 x 10-6
30-225
48-69
-43
257
88-98
80-88
<15
14.7
85-88
12-15
2.7-3.5
380
43.5
No. 2
Diesel Fuel
Cg to C₂5
-200
0.85
2.5 x 10-6
210-235
<2
60-80
-315
40-55
14.7
87
13
0
375
45
Ethanol
C₂H, OH
32
0.794
1.4 x 10-
78
148
13
423
109
90
9.0
52.2
13.1
34.7
920
28
B100
Biodiesel
C₁2 to C₂2
-292
0.88
182-338
<0.3
100-170
48-65
13.8
77
12
11
L
42
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