Diffusion
- Stagnant Layer diffusion
- How to Predict Diffusivities
- The Two-Bulb Method
- Ball Method
Core chemical engineering · Year 2
Mass Transfer for chemical engineers
A course on mass transfer, covering diffusion mechanisms, humidity, diffusivity prediction, convective transfer and cooling tower design.
- 11
- 18
- 17
- 4
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No card needed. Every lesson is open on every plan.
The subject
What Mass Transfer covers
This course explores the fundamentals of mass transfer through a range of mechanisms and applications. It begins with stagnant layer diffusion and Fick's law, then covers humidity and the use of psychrometric charts, and methods for predicting diffusivities such as the Fuller, Schettler and Giddings correlation. Experimental approaches are examined through the two-bulb, Stefan and ball methods, before the course moves into convective mass transfer and two-phase systems where solute transfers between gas and liquid phases. It concludes with a detailed treatment of cooling towers, covering the heat and mass transfer that drive evaporation and the associated design procedure.
What you’ll be able to do
- Define total flux relative to a fixed reference point
- Identify solids dissolving into liquids as convective mass transfer
- Define relative humidity as water vapour content of a gas mixture
- Explain why a psychrometric chart simplifies humidity calculations
The lessons
Every lesson, theme by theme
11 lessons in 4 themes, pitched at Year 2. Your year decides what comes first, never what you can open.
Convective Mass Transfer
- Convective Mass Transfer
Humidity & Cooling Towers
- Introduction to Humidity
- Introduction to Cooling Towers
- Cooling Tower Design Procedure
More in Mass Transfer
- Using a Psycometric Chart
- Stefan Method
- Two-Phase Systems
Before you start
What it builds on
How you’ll learn it
Mass Transfer, at your pace
Video lessons
11 lessons and 18 videos, each with what you’ll be able to do by the end.
Practice, marked as you go
17 practice questions, marked the moment you answer, with hints when you’re stuck. Step-by-step worked solutions come with Core.
CERA, when it doesn’t click
Ask CERA to explain any idea in Mass Transfer another way, or to test you on it. Every day, on every plan.
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Thermodynamics
A comprehensive grounding in thermodynamic principles and cycles, covering energy, efficiency, the ideal gas law and the OTTO, Diesel, Brayton, Carnot and Rankine cycles.
Ready when you are
Build a plan around exactly where you’re stuck
Tell us where you are and get a pathway with your first lesson, your first practice set and a weekly study target. You won’t need an account until you want to keep it.