Re: [TRNSYS-users] building internal gains

["Mario Leroy Ortiz" <ortizm@unm.edu>]

Borges,

Hello from New Mexico.

I have worked with modeling buildings.  Here is what I 
would do.

In TRNBld, when you click on your zone you get the window 
where you
defined your walls, zone volume and so forth.  At the top 
of that window
there is a button that says "gains" with a picture of a 
candle.

If you click the gains button there are 3 or 4 different 
type of gains
that can be defined.  Since you know that the sum of your 
gains is
4W/m^2, you can enter your gains as 4 W/m^2 of artificial 
lighting.
Even though some of your gains are not artificial 
lighting, gains
is gains, and you know the value you want to use.

The pull down menu for artificial lighting will not allow 
you to
select 4 W/m^2, so you can select 5 W/m^2 and set your 
scale to
0.8 which will effectively be 4 W/m^2.  You can use a 
schedule to
turn your gains on and off with values of 1 or zero or you 
can use the
schedule to scale back your gains with a fraction greater 
than zero but
less than 1.

Enter the square footage ( I mean square meters) of your 
building in the affected floor area
box and you should be good.

Thank you,

Mario Ortiz


On Wed, 11 Jun 2008 08:57:33 +0000
 m 980424 <m980424@hotmail.com> wrote:
> Hi
>
> I'm doing an energy analysis of a multizone residential 
> building.
>
> I'm having problem characterizing the internal gains of 
> the building. In Portugal, when applying the legislation, 
> we have to input 4 W/m2 for the sum of all (persons, 
> equipment and lighting) the internal gains of the 
> building. How can I do that in TRNBUILD?
>
> Thanks
>
> Borges
>
> _________________________________________________________________
> Search that pays you back! Introducing Live Search 
> cashback.
> http://search.live.com/cashback/?&pkw=form=MIJAAF/publ=HMTGL/crea=srchpaysyouback