[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [TRNSYS-users] Type 460
Christian,
Interesting case. I don't think that Type460 is the right place to
start. For one, as you point out, it assumes the flow is in only one
direction along all of the parallel paths. Second, there isn't a way of
defining that the "earth" between the two ducts contains a PCM. You
might actually have better luck using a series of zones in Type56 to
mimic the duct (one or two long, narrow zones in series going out and
another one or two coming back. You might then be able to employ the PCM
wall that is available in the TRNLib for the wall separating the zones.
Be aware that the thermal zones in Type56 assume a natural convection
coefficient on the inside surfaces so you would definitely want to set
the inside convection coefficient to an input and then use a forced
convection correlation to calculate the value.
Kind regards,
David
On 5/6/2011 07:09, Christian Mann wrote:
Dear TRNSYS-User,
I want to simulate an air-to-soil exchanger with an u-shaped tube and a
PCM-wall in the middle. My first thoughts were to use the Type 460
(air-to-soil exchanger) and create two tubes with different airflow
directions and for the PCM-wall to define one soil node between these two
tubes. For the PCM-wall I want to write an Excel-chart. But I don't know
how to define two different airflow directions or if this is possible.
There is also the problem to conect the tubes and I also don't know how to
conect the soil with the Excel-chart.
Does anyone know a solution for this Problem? Or maybe know some other way
to simulate a u-shaped tube with PCM-wall.
Best regards,
Christian
_______________________________________________
TRNSYS-users mailing list
TRNSYS-users@cae.wisc.edu
https://mailman.cae.wisc.edu/listinfo/trnsys-users
--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI 53703 USA
P:+1.608.274.2577
F:+1.608.278.1475
d.bradley@tess-inc.com
http://www.tess-inc.com
http://www.trnsys.com