Re: [TRNSYS-users] thermosyphon

["Diego A. Arias" <daarias@wisc.edu>]

Dear David,

I do not know of any type that simulates the thermosyphon system with 
two fluids.

If I understand correctly, you would need to model the heat exchanger 
between the two fluids.  You can modify the source code of Type45: the 
component calculates the pressure drop through the pipes connecting from 
the solar collector to the tank, and calculates a force balance in order 
to ensure that it can create the flow.   You could modify the call to 
the stratified tank and add the calculation of the pressure drop through 
the internal heat exchanger at the same time that calculates the heat 
transfer to the fluid in the tank.

Please let me know if you want to follow this strategy. I will be glad 
to help you if you have problems writing the component.
Best regards,

Diego

David Garcia wrote:
> Dear all,
>
> I would like to model a thermosyphon system which has different fluids 
> in the collector and the tank, so I can not use Type 45. Does anyone 
> know about a type that simulates the performance of a thermosyphon 
> having two different fluids, one for the collector and other in the tank?
>
> Thanks in advance
>
> Regards.
>
> David
>
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--

Diego A. Arias
TRNSYS Coordinator
Solar Energy Laboratory
University of Wisconsin - Madison
1500 Engineering Drive
Madison, WI 53706