ChEn-1070: Introduction to Chemical Engineering Spring 2019 UMass Lowell; Profs. Manohar and de Almeida 30Apr2019

Laboratory Work 11 30Apr2019¶

Name: your name¶

Rubric for each assignment:¶

Guidance:¶

• Save your work frequently to a file locally to your computer.
• During your work and before submitting the final version do: `Kernel` -> `Restart & Run All`, to verify your notebook runs correctly.
• Save your file again.

Assignment 1 (100 pts).¶

Using scipy.constants, mendeleev, and a for loop solve the mass transfer problem: ¶

A circular, thin film with radius of 20 ft shrinks at a rate of

$\dot{r} = -3.7 \mu\!\,m/s$

The film is saturated with water at a concentration of 0.002 gmol/L and the mass transfer coefficient is h = 0.5 in/s. If the film is exposed to dry air make a plot of the water removal in moles per minute for the first half hour.

Use the overall masss transfer formula for film exposed to air with no water vapor.