[TRNSYS-users] Type 56 - Moisture Capacitance Model (Buffer Storage Humidity Model) parameters

[Christophe Plantier via TRNSYS-users]

Dear Marie-Hélène and all trnsys-users,

I had the same questions some years before and never had any answer ...

However these moisture transfers are essentials for air conditioning 
calculations. It would be very helpful if someone of transsolar explains 
us how to use this Moisture Capacitance Model. It seems that 
explanations in volume 5 Manual documentation are not enough clear ...

Many thanks for any help !!!


*Christophe PLANTIER *

Scop ENERTECH
*1er Prix 2015* des Trophées de l'*INGENIERIE PERFORMANTE*
/http://www.edipa.fr/Actualite/Details/1187/
65, les balcons de l'Amourier 26160 Pont de Barret
Tel & Fax : 04 75 90 18 54 - Site internet : _www.enertech.fr_
_/Nouveauté/_/: découvrez notre Blog : _http://leblog.enertech.fr_/

Le 24/08/2017 20:12, Marie-Hélène via TRNSYS-users a écrit :
>
> Hi everyone,
>
>
> I’m working on a multi-zone building (type 56) model with TRNSYS18 and 
> I want to use the Moisture Capacitance Model (Buffer Storage Humidity 
> Model). To do this, I have to define 6 parameters: Ksurf, Kdeep, 
> Msurf, Mdeep, Bsurf and Bdeep for every thermal zone.
>
> There are many questions about this on the mailinglist but not many 
> answers. I listed some questions about the /Buffer Storage Example/ 
> (TRNSYS documentation) below :
>
> 1- When calculating Mdeep, why the thickness of every material i is 
> not double in the calculation of Mi as it is for the calculation of 
> Msurf ?
> (https://www.mail-archive.com/trnsys-users@engr.wisc.edu/msg01911.html)
>
>
> 2- When calculating Mdeep, they do consider the concrete from ceiling 
> and ground floor, but there's some information missing in the example 
> to explain Mconcrete = 175kg.  For this calculation should I use the 
> thinkness and area of concrete from floor and ceiling?
>
>
> 3- When calculating Bdeep, the value of A is 50m^2, wich is the 
> wall/gypsum area. Floor and ceiling area are neglected?
>
> 4- Someone know a good link or reference about this calculation?
>
> Thank you very much,
>
>
> Images intégrées 1
>
> *Marie-Hélène Talbot*| Étudiante à la maîtrise
> Énergies renouvelables et efficacité énergétique
> Département de génie de la construction
> École de technologie supérieure
>
>
>
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> TRNSYS-users at lists.onebuilding.org
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