Encyclopedia of Renewable Energy. James G. Speight
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Название: Encyclopedia of Renewable Energy

Автор: James G. Speight

Издательство: John Wiley & Sons Limited

Жанр: Физика

Серия:

isbn: 9781119364092

isbn:

СКАЧАТЬ in water.

Alkane Melting point, °C Boiling point, °C Density, g/ml @20°C
Methane -183 -162
Ethane -172 -88.5
Propane -167 -42
Butane -138 0
Pentane -130 36 0.626
Hexane -95 69 0.659
Heptane -90 98 0.684
Octane -57 126 0.703
Nonane -54 151 0.718
Decane -30 174 0.730
Undecane -26 196 0.740
Dodecane -10 216 0.749
Tridecane -6 234 0.757
Tetradecane 5.5 252 0.764
Pentadecane 10 266 0.769
Hexadecane 18 280 0.775
Heptadecane 22 292
Octadecane 28 308
Nonadecane 32 320
Paraffin Melting point, °C Boiling point, °C Density, g/ml @20 °C
Isobutane -159 -12
Isopentane -160 28 0.620
Neopentane -17 9.5
Isohexane -154 60 0.654
3-Methylbutane -118 63 0.676
2,2-Dimethylbutane -98 50 0.649
2,3-Dimethylbutane -129 58 0.668

      Octane number is a measure of the ability of a fuel (gasoline) to avoid knocking. The test engine is adjusted to give knock from the fuel rated. Then, various mixtures of isooctane (2,2,4-trimethylpentane) and n-heptane are used to find the ratio of the two reference fuels that will give the same intensity knock as that from unknown fuel. Defining isooctane as having an octane number of 100 and n-heptane as 0, the octane number is the volumetric percentage of isooctane in heptane that matches knock from the unknown fuel is reported as octane number of the fuel.

СКАЧАТЬ
Olefin Melting point, °C Boiling point, °C Density, g/ml @20°C
Ethylene -169 -102