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NUS Chemical Engineering Module Review: CN2125 Heat and Mass Transfer

If you recall back to both your Secondary and Pre-U Sciences, you would have learnt the various methods of transferring heat. This module is nothing like what you have learnt. Expect to do plenty of calculations and very little explanation. You will be doing A LOT of calculus and be prepared to see a lot of mathematical notations instead of your usual ‘wordy explanations’ in the lecture notes. If you excelled in subjects like humanities, chemistry or biology because of its detailed explanation, I highly advice you to write out explanations beside all the equations or derivation so you understand what is going on. If you did at least O level physics or you are a visual learner, I also highly encourage you to draw diagrams so you can visualise things (E.g. free body diagrams for forces in Physics previously).

For Prof Wang’s part, I highly encourage you to read the textbook (Fundamentals of Mass, Momentum and Heat Transfer) AKA WWWR. Because his lecture notes are ‘cut and paste’ of some sections of the textbook without a lot of context so it will likely be confusing. His lecture style is mostly monotonous and to be very honest, confusing. There are many times I left feeling: what is the point of his lecture? But I realised too late that the solution to this is the textbook, and asking around. You will need Fluid Mechanics because how convective heat transfer works is quite similar to fluids (you will be reusing some concepts such as Von Karman, and Blasius solution), and you will need to reuse concepts of Energy Balances from CN2101/CN1101A/CN2121.

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