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Heat transfer in solids coupled with Transport of diluted species

Posted Jul 18, 2016, 10:58 a.m. EDT Heat Transfer & Phase Change Version 4.2a 2 Replies

Krish
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Hi,

I'm trying to couple heat transfer in solids with transport of diluted species.

Reaction rate R = -Ca* (A*exp(-E/RT))

I want to impose temperature constraint on this reaction. I want the reaction to be happen only between the temperature range of 500-580K.

I'm using R = -(Ca* (A*exp(-E/RT)))*(500<T<580)

Heat Source Q = heat of reaction*chds.R

Also, heat should release whenever there is temperature of 500-580K because of the reaction and there should be no heat release after reactant convert to the products even the temperature is between 500-580K.

Please let me know where i'm doing wrong.

Thanks in Advance
Krish



2 Replies Last Post Jul 18, 2016, 2:30 p.m. EDT
Sohan Birla
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Posted: 8 years ago Jul 18, 2016, 2:00 p.m. EDT
Heat generation should be a function of reaction rate which is a function of concentration. What is Ca in your equation? If Ca is the concentration then it is automatically takes into account of concentration of reacting substance.
Heat generation should be a function of reaction rate which is a function of concentration. What is Ca in your equation? If Ca is the concentration then it is automatically takes into account of concentration of reacting substance.
Krish
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Posted: 8 years ago Jul 18, 2016, 2:30 p.m. EDT
Hi Birla,

First, Thank you for your response. Yes, Ca is concentration of reactant.

R = -(Ca* (A*exp(-E/RT)))*(500<T<580)

Is it correct way to impose constraint on reaction rate?

Thanks in advance
Krish
Hi Birla, First, Thank you for your response. Yes, Ca is concentration of reactant. R = -(Ca* (A*exp(-E/RT)))*(500

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