Two Film Theory Mass Transfer (Lec029)

[@HlufHailu]

great video. but I have a question, how do we estimate the thickness of film? do we have an equation for calculating it from physical parameters of the liquid for example

[@ChemicalEngineeringGuy]

You will see the thickness in the full course version =)

[@slstats7948]

Nice❤️🤗 From Sri Lanka 🇱🇰

[@ChemicalEngineeringGuy]

Hi from MX!

[@nirmitimore2078]

I had a straight face until 5:00😅😂

[@ChemicalEngineeringGuy]

sorry about that XD

[@saddamhussainsoomro2810]

Sir what if the shape of interface is curved one ?

[@ChemicalEngineeringGuy]

like what? this analysis is done over a very small area, that you should always assume (if you "zoom in") that this is the final case, an interphase in between

[@معاذالدوسري-ث6م]

Great job 🙏🏻❤️🧠

[@ChemicalEngineeringGuy]

Thanks!

[@tadeja1906]

Love this explanation :)

[@sebastianrosenbusch3964]

You claim that there is no reaction but if there was no Reaction, wouldn't the concentration in both phases just be constant an in equilibrium? I thought this models purpose was to describe a reaction taking place in the fluid phase.

[@ChemicalEngineeringGuy]

Sebastian, we are talking about mass transfer cases only, no chemical reaction, of course we are claiming no chemical reactions, as we want to model FIRST the mass transfer without chemical reaction. Then you will add the model with chemical reaction and NO, what you are seing is a moment in time + position in a Gas Absorber, meaning it is not in equilibrium, therefore, there is mass transfer. If you add a liquid and gas with a solute which will be in equilibrium, it will be a failed design! Its like wanting to cool/heat a 25ºC cup of coffee with another material that is at 25ºC, doesnt make that much sense

[@waliiid3215]

What is film !!?

[@ChemicalEngineeringGuy]

well, you can assume a very small/thin layer of a given material

[@RupaliPrakash-qo4qy]

Awesome

[@ChemicalEngineeringGuy]

;)

[@florachrist9602]

We cnt see clearly plz teacher

[@ChemicalEngineeringGuy]

You mean the video quality? or the image?

[@chemicalengineer1985]

😘

[@ChemicalEngineeringGuy]

;)