(2) Prefix of SI system(1) Main SI units
Quantity
Angle
LengthArea
VolumeTime
Frequency, vibration
MassDensity
Force
PressureWork, energy
Power
Thermodynamic temperature
Quantity of heat

SI unitradmm2m3s (Second )Hz (Hertz )kg
kg/m2
N (Newton )Pa (Pascal )J (Joule )W (Watt )K (Kelvin )J (Joule )Unit applicable with SI unit

PrefixMultiple to the unit…(degree ), ’(minute), ’’(second)

1018
1015
1012
109
106
103
102
10
10-1
10-2
10-3
10-6
10-9
10-12(liter)d (day), h (hour), min (minute)t(ton)bar (bar)eV (electron voltage)

Name

Symbol

Exa
Peta
Tera
Giga
Megakilo
hecto
deca
decicenti
millimicro
nanopico

EPTGMkhdadcmunp(4) Coal gasification reactions(3) Typical conversion factors
1. Basic Energy Units
1J (joule )=0.2388cal
1cal (calorie )=4.1868J
1Bti (British )=1.055kJ=0.252kcal
2. Standard Energy Units
1toe (tonne of oil equivalent )=42GJ=10,034Mcal
1tce (tonne of coal equivalent )=7000Mcal=29.3GJ
1 barrel=42 US gallons 159
1m3=35,315 cubic feet=6,2898 barrels
1kWh=3.6MJ 860kcal
1,000scm (standard cubic meters )of natural gas=36GJ (Net Heat Value )1 tonne of uranium=10,000-16,000toe(Light water reactor, open cycle)
1 tonne of peat=0.2275toe
1 tonne of fuelwood=0.3215toe

(1)
1
2

97.0kcal/mol
29.4kcal/mol

(2)
(3)

38.2kcal/mol(4)31.4kcal/mol
18.2kcal/mol
10.0kcal/mol

(5)
(6)
(7)

17.9kcal/mol
49.3kcal/mol

(8)
(9)

(5) Standard heating value for each energy source
Energy source
Coal
Coal
Imported coking coal
Coking coal for coke
Coking coal for PCI
Imported steam coal
Domestic steam coal
Imported anthracite
Coal productCoke
Coke oven gas
Blast furnace gas
Converter gas
Oil
Crude oil
Crude oil
NGL, Condensate
Oil product
LPG
NaphthaGasoline
Jet fuel
KeroseneGas oilA-heavy oil
C-heavy oil
Lubrication oil
Other heavy oil product

Unit

Standard calorific valuekg
kg
kgkg
kg
kg

28.9 MJ
29.1 MJ
28.2 MJ
26.6 MJ
22.5 MJ
27.2 MJ

6904 kcal
6952 kcal
6737 kcal
6354 kcal
5375 kcal
6498 kcal

7600 kcalkg
Nm3
Nm3
Nm3

30.1 MJ
21.1 MJ
3.41 MJ
8.41 MJ

7191 kcal
5041 kcal
815 kcal2009 kcal

7200 kcal
4800 kcal
800 kcal2000 kcal

38.2 MJ
35.3 MJ

9126 kcal
8433 kcal

9250 kcal
8100 kcal

11992 kcal
8146 kcal
8266 kcal
8767 kcal
8767 kcal
9126 kcal
9341 kcal
9962 kcal
9603 kcal
10105 kcal

12000 kcal
8000 kcal
8400 kcal
8700 kcal
8900 kcal
9200 kcal
9300 kcal
9800 kcal
9600 kcal
10100 kcal

kgStandard calorific value on a Kcal basis Former standard calorific value

Remarks
Temporary value

6200 kcal
5800 kcal
6500 kcalkg

50.2 MJ
34.1 MJ
34.6 MJ
36.7 MJ
36.7 MJ
38.2 MJ
39.1 MJ
41.7 MJ
40.2 MJ
42.3 MJ

Oil coke
Refinery gas

kg
Nm3

35.6 MJ
44.9 MJ

8504 kcal
10726 kcal

8500 kcal
9400 kcal

Gas
Flammable natural gas
Imported natural gas (LNG)
Domestic natural gas
City gas
City gaskg
Nm3

54.5 MJ
40.9 MJ

13019 kcal
9771 kcal

13000 kcal
9800 kcal

Nm3

41.1 MJ

9818 kcal

10000 kcal

kWh9.00 MJ

2150 kcal

2250 kcal

kWh3.60 MJ

860 kcal

860 kcalkg

2.68 MJ

641 kcal

Formerly NGLFormerly other oil productsElectric power
Generation side
Heat supplied to power generator
Consumption side
Heat produced from electric power
Heat
Consumption side
Heat produced from steam

Clean Coal Technologies in Japan

Japan Coal Energy Center (JCOAL)

January 2007

Meiji Yasuda Seimei Mita Building 9F,
3-14-10 Mita, Minato-ku, Tokyo 108-0073 Japan
Tel. +81-3-6400-5193 Fax. +81-3-6400-5207

The copyright of this brochure is owned by JCOAL and NEDO.

Formerly LNG
Formerly natural gas

Efficiency 39.98%

100oC, 1 atm
Saturated steam

New Energy and Industrial Technology Development Organization (NEDO)MUZA Kawasaki Central Tower 21F,
1310 Omiya-cho, Saiwai-ku, Kawasaki City, Kanagawa 212-8554 Japan
Tel. +81-44-520-5290 Fax. +81-44-520-5292

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