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Unlike pure substances which boil or condense at a single value of temperature (with the specified value of pressure), mixtures condense or boil over a range of temperatures or pressure. The point at which mixtures first turn to vapor is the bubble point, while the point where the vapor first starts to condense is called the dew point.
This concept is usually used for the calculation of the composition of the condensed droplets/ evaporated gas at a specific temperature and pressure. This is also applied in equilibria diagrams where curves of bubble points and dew points are formed to relate (using tie lines) the compositions of a mixture in a specific temperature and pressure.
Purpose
Purpose
To help students quickly calculate the dew point and bubble point values without the need for manual trial and error, this Dew point/ Bubble point calculator is created to lighten the burden of students, especially Chemical Engineering students who encounter problems like these ( problems that involve separation of materials).
A Quick Tour
A Quick Tour
Bubbles & Dew Final Project Presentation.MOVPrinciples Involved
Principles Involved
For both calculations, it is important to point out the assumptions made to get the bubble point and dew point. First, the mixtures must be assumed ideal (ideal gas and ideal solution) to establish the relations of pressures, and partial pressure can be established with the help of Raoult’s Law (the partial pressure of a component is equal to vapor pressure multiplied by the mole fraction of the component in the solution).
The second assumption is that the saturation pressure of the component can be calculated using Antoine's equation. Lastly, it was also necessary to point out that in bubble point calculations, it is assumed that all the components of the liquid are present in the vapor phase, while in dew point calculation, all of the vapor is transformed in the liquid phase.
(Browse for the appendix on the bottom of the page for the equations used)
Main Features
Main Features
Can Calculate Bubble Point Temperature and Pressure
Can Calculate Dew Point Temperature and Pressure
Requires constant values, and an initial temperature for temperature calculations.
Can accommodate multiple components, and is recorded in an array.
Limitations
Limitations
Calculates Ideal mixtures only.
The values for Antoine's equations are needed, and it's up to the user for their correctness.
The final compositions are not part of the computation and are not shown to the user.
Timeline
Timeline
Draft
Created Module For The About Section
Final User Interface
Contributors
Contributors
LESACA, HEIL VIENNE
TOLENTINO, KRISTEL ANN DOROTHY
RODAS, ALAN VINCENT
Appendix
Appendix
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