Screen H

3 H. Viscosity of Paraffin Hydrocarbon Gases Back to Main

The page is used to determine the viscosity of paraffin hydrocarbon gases. Viscosity is the measurement of the resistance of fluids to flow. It is that number, which represents the drag forces, caused by the attractive forces in adjacent layers. It might be considered the internal friction between molecules. The method used for calculating viscosity is estimated from the Viscosity of Paraffin Hydrocarbon Gases at Atmospheric Pressure graph (figure 3.17) and the Pressure Correction for Viscosity from Figure 3.17 graph (figure 3.18)

To calculate viscosity of paraffin hydrocarbon gases the Temperature, Pressure, and Mole % of each component in the mixture, must be entered into the entry space. To do so use the mouse to click the curser in the entry spaces and input the data. Once this has been done, select Run to execute the solution.

The component table is a list of the possible compounds along with their symbols to be used with this program. In the far right column titled Mole % use the mouse to choose the available cell and enter the mole fraction of the component in the mixture. Use the Up and Down arrow keys to move from cell to cell. The total for the Mole % should be 100.00.

Temperature is the temperature of the Liquid in SI units, Celsius and Kelvin or in English units, Fahrenheit and Rankin.

° C = 0.556 (° F - 32), K = ° C + 273, ° F = (1.8)(° C) + 32, ° R = ° F + 460

For unit conversions, please refer to Set Auto Convert and Unit Conversion.

Pressure is the force exerted per unit area of the liquid. For engineering purposes absolute pressure is used.

Paraffins are hydrocarbons that end in –ane, and in each case the number of hydrogen atoms are two times the number of carbon atoms plus two more for the ends of the chain.

Example: Methane (CH4)

|  | H |  |
H | - | C | - | H
|  | H |  |

Back to Main