mathematical model development of regenerative thermal oxidizer for volatile organic compounds

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omkar tulankar
omkar tulankar 2020-11-20
评论： Joel Van Sickel 2020-12-22
I am trying to develop a regenerative thermal oxidizer for volatile organic compounds(VOCs) mathematical model using simscape gas elements.
I am facing problem with finding a appropriate sensor to detect whether the actual oxidation of VOCs is happening or not .
Is there any possible sensor available in simulink which can solve my purpose?

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Joel Van Sickel
Joel Van Sickel 2020-11-23
Hello Omkar,
the gas elements are for modelling the dynamics of a gas system, not it's chemical reactions. This particular domain also does not support multiple species. While you could model the gas dynamics of this system, you would not be modelling the oxidation process using the simscape gas library. You would need to develope your own reaction models for the oxidation process.
An alternative, would be to start with the moist air domain, only instead of moisture in the air, treat that as VOC's. This would require a decent amount of homework to understand building your own domain in simscape, but is doable.
https://www.mathworks.com/help/physmod/simscape/ug/modeling-moist-air-systems.html
Regards,
Joel
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omkar tulankar
omkar tulankar 2020-12-22
Hi Joel,
Gate valve working is established, I am facing problem with temperature control valve .
That is when temperature control valve is closed above actuation temperature , it is also affefcting the volumetric flow rate at the gate valve end (though it is open ).
I have also tried to put check valve in between the network .
It is not helping out .
I want that when the temperature control valve closes , the vometric flow after the temperature control valve should be zero , while volumetric flow before the temperature control valve should remain constant .
Can you help me out in this ?
I am attaching my model for your reference.
Thanks in advance .
Waiting for you response .
Joel Van Sickel
Joel Van Sickel 2020-12-22
Hello Omkar,
this is not physically possible. If a valve shuts off, the flow before and after it both go to zero. You would need a second pipe to divert the flow. The model is working correctly. If you have a single pipe, and any valve on it shuts, the flow in the whole pipe stops.
Regards,
Joel

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