4. The discussion of electricity costs in section 8.6 stated that coal costs of $1.00 - $1.50 per million BTU are equivalent to about $24-$36 per ton, and that natural gas costs of $2.00 - $5.00 per million BTU correspond, on an equivalent energy basis, to $12-$30 per barrel of oil. Use the data on fuel properties in table 8.1 to confirm these equivalencies.

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
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4. The discussion of electricity costs in section 8.6 stated that coal costs of $1.00 - $1.50 per million BTU are
equivalent to about $24-$36 per ton, and that natural gas costs of $2.00 - $5.00 per million BTU correspond,
on an equivalent energy basis, to $12-$30 per barrel of oil. Use the data on fuel properties in table 8.1 to
confirm these equivalencies.
Transcribed Image Text:4. The discussion of electricity costs in section 8.6 stated that coal costs of $1.00 - $1.50 per million BTU are equivalent to about $24-$36 per ton, and that natural gas costs of $2.00 - $5.00 per million BTU correspond, on an equivalent energy basis, to $12-$30 per barrel of oil. Use the data on fuel properties in table 8.1 to confirm these equivalencies.
Table 8.1
Hydrogen-to-Carbon Ratio and Heating (Calorific) Value of Selected Fossil and Process-Derived Fuels
Fuel Type
H/C, Atomic
Gross Heating Value (kcal/g)
Gaseous
High-Btu
Methane
4.0
3.5-4.0
13.3
11.7-11.9
Natural gas
Intermediate-Btu
Hydrogen
33.9
00
Coke oven gas
4.9
9.6
Water gas (H₂-CO)
2.0
4.3
Low-Btu
Producer gas (N₁-diluted; from bituminous coal)
1.2
1.2
Liquid
Methanol
4.0
5.3
Gasoline
2.0-2.2
11.2-11.4
No. 2 fuel oil
1.7-1.9
10.7-11.0
No. 6 fuel oil
1.3-1.6
10.0-10.5
Crude shale oil
1.6
10.3-10.4
Bitumen (Athabasca tar sands)
1.4-1.5
9.8-10
Solid
Kerogen (Green River oil shale)
1.5.
10
Lignite
0.8
3.9-5.4
Subbituminous coal
0.8
5.5
0.5-0.9
6.7-8.8
Bituminous coal
Anthracite
0.3
8.4
Low-temperature coke
0.4
8.2
High-temperature coke
0.06
8.0
Source: Howard (1981) and references cited therein.
* Mineral-matter-free C and total organic H (i.e., including H bound with O, S, and N).
Coals: moist, free of mineral matter; cokes: dry, ash-free; 1 kcal/g = 1,800 Btu/lb.
*Gross heating value is equivalent to the higher heating value of the fuel (HHV).
Transcribed Image Text:Table 8.1 Hydrogen-to-Carbon Ratio and Heating (Calorific) Value of Selected Fossil and Process-Derived Fuels Fuel Type H/C, Atomic Gross Heating Value (kcal/g) Gaseous High-Btu Methane 4.0 3.5-4.0 13.3 11.7-11.9 Natural gas Intermediate-Btu Hydrogen 33.9 00 Coke oven gas 4.9 9.6 Water gas (H₂-CO) 2.0 4.3 Low-Btu Producer gas (N₁-diluted; from bituminous coal) 1.2 1.2 Liquid Methanol 4.0 5.3 Gasoline 2.0-2.2 11.2-11.4 No. 2 fuel oil 1.7-1.9 10.7-11.0 No. 6 fuel oil 1.3-1.6 10.0-10.5 Crude shale oil 1.6 10.3-10.4 Bitumen (Athabasca tar sands) 1.4-1.5 9.8-10 Solid Kerogen (Green River oil shale) 1.5. 10 Lignite 0.8 3.9-5.4 Subbituminous coal 0.8 5.5 0.5-0.9 6.7-8.8 Bituminous coal Anthracite 0.3 8.4 Low-temperature coke 0.4 8.2 High-temperature coke 0.06 8.0 Source: Howard (1981) and references cited therein. * Mineral-matter-free C and total organic H (i.e., including H bound with O, S, and N). Coals: moist, free of mineral matter; cokes: dry, ash-free; 1 kcal/g = 1,800 Btu/lb. *Gross heating value is equivalent to the higher heating value of the fuel (HHV).
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