March 2003
Intermediate to advanced
1056 pages
32h 58m
English
book
Transport Processes and Separation Process Principles (Includes Unit Operations) Fourth Edition
by Christie John Geankoplis
Content preview from Transport Processes and Separation Process Principles (Includes Unit Operations) Fourth Edition
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1.3. METHODS OF EXPRESSING TEMPERATURES AND COMPOSITIONS
1.3A. Temperature
There are two temperature scales in common use in the chemical and biological industries. These are degrees Fahrenheit (abbreviated °F) and Celsius (°C). It is often necessary to convert from one scale to the other. Both use the freezing point and boiling point of water at 1 atmosphere pressure as base points. Often temperatures are expressed as absolute degrees K (SI standard) or degrees Rankine (°R) instead of °C or °F. Table 1.3-1 shows the equivalences of the four temperature scales.
| Centigrade | Fahrenheit | Kelvin | Rankine | Celsius | |
|---|---|---|---|---|---|
| Boiling water | 100°C | 212°F | 373.15 K | 671.67°R | 100°C |
| Melting ice | 0°C | 32°F | 273.15 K | 491.67°R | 0°C |
| Absolute zero |
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