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TEC (Peltier) Transient Study

71 Views, 5 Replies
12/19/2017 9:45 PM

Hello,

 

I am looking to simulate a transient study with a TEC device. I have the device modeled and working well in a steady state situation. I would like to model a transient solution where I can turn the TEC on and off at specified moments in time and see how the device performs. Can this be done? Can the TEC be turned "on" and "Off" transiently? Or is my best bet to perform a piecewise simulation and solve it in steps with the device in on and off states?


Thanks,

 

Grant 


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Message 1 of 5 ( Views: 71 )

Re: TEC (Peltier) Transient Study

12/20/2017 8:33 AM

Good morning Grant,

 

Unfortunately we cannot simulate a TEC being turned on and off during a transient run.

 

A couple of steady state solutions should give you what your looking for. In my opinion for this case running transiently wouldn't give you anything other than an increased run time and larger result files!

 

Hope this helps,

David


David Short
Technical Support Specialist, Simulation

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Message 2 of 5 ( Views: 57 )

Re: TEC (Peltier) Transient Study

12/20/2017 2:33 PM

David, 

 


Thanks for the quick reply. I figured that. However, I DO NOT want to run a steady state simulation for this as in real use the Peltier will be cycled to achieve temperature on the cool side. I am trying to investigate how long the Peltier needs to be "on" to achieve that from a base temperature to a target temperature. The Peltier Module we are using as negligible thermal mass so I am not worried about the TEC model not having thermal mass. What I would like to do now is start at a transient simulation with the Peltier "on" and investigate the temperature change over time in my system to see if the Pelier we are considering has enough power to drive the change in temperature we need in the amount of time we need it. Is this possible or is the TEC material completely unable to run anything accurately in transient? If the Peltier is unable to work correctly in transient do you have a suggestion for how to model this system? Which boundary conditions could I drive to simulate this Peltier set up? I feel like purely driving the temperature differential on the TEC would over simplify the study and not inform me as to if the wattage needed in the Peltier is over its design. Any ideas are welcome!


Thanks,

 

 

Grant 


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Message 3 of 5 ( Views: 49 )

Re: TEC (Peltier) Transient Study

12/20/2017 3:01 PM

Hi Grant,

 

The TEC will work absolutely fine in a transient run. You just can't vary its settings during the run. 

 

Your idea to simulate transiently with TEC 'on' to see if the TEC settings are sufficient to drive a temperature change in a given time sounds good to me.

 

Good luck with the simulation,

David


David Short
Technical Support Specialist, Simulation

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Message 4 of 5 ( Views: 44 )

Re: TEC (Peltier) Transient Study

12/20/2017 3:35 PM

David, 



Thanks! This should allow me to find the information I'm looking for. 

Best, 


Grant 


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Message 5 of 5 ( Views: 37 )