Re: [TRNSYS-users] TYPE 97 and CONTAM

[dchainot <diane.chainot@insa-lyon.fr>]

Hello Giacomo,

Yes that's right, In TRNSYS, the ventilation in the building is in vol/h but by
boundary it's in kg/h; and some types have inputs or outputs in kg/h. 

For example I use type "attached sunspace" which output air flow is in kg/h. I
create an input in the building and link it to the output ventilation of the
sunspace.
If I decide to call this input by a wall in a zone of my buiding
(boundary/coupling air flow), the coupling air flow is asking in kg/h so it's
good.
But if I decide to call this input by acting a ventilation, it is asking an
input in vol/h. 
So you must be carefull of what you enter in what^^.

Best regards,

Diane.

Quoting David Bradley <bradley@tess-inc.com>:

> Giacomo,
>    It may be an issue of air density. I think 
> that CONTAM reports volumetric flows while TRNSYS 
> uses mass flows. I am not sure that there is any 
> way of finding out what the density of the air flows in CONTAM is.
> Cheers,
>   David
> 
> 
> At 11:53 7/19/2007, giacomo.villi@unipd.it wrote:
> 
> >Hi,
> >I am having some problems with TYPE 97. I am modeling a single zone
> building
> >and i have told TYPE 97 to print the airflow from that zone to the ambient
> >and from the ambient to that zone (the two values should be the same of
> >course) as
> >I want to be sure that everything is working properly.
> >Air is supposed to flow in from one device at the bottom of the zone and
> >it is leaving from three exits in the top.
> >In CONTAM everything seems to work fine but in TRNSYS i am told that the
> >two values (inflow and outflow) are different.
> >Any help will be appreciated,
> >thanks in advance
> >giacomo
> >
> >--
> >Giacomo Villi
> >Univerisità degli Studi di Padova
> >Dipartimento di Fisica Tecnica (DFT)
> >Tel: +39 049 8276871
> >
> >_______________________________________________
> >TRNSYS-users mailing list
> >TRNSYS-users@engr.wisc.edu
> >https://www.cae.wisc.edu/mailman/listinfo/trnsys-users
> 
>
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