[esp-r] Re: zone control model

[Georgios Kokogiannakis]

Hi Ali,

for your tdf data you will need: (start-up period) + (simulation timesteps) + 
(1*24 number of data in order to make it work. I see that you only have 24 
data in your file. You probably get few warnings during your simulation runs 
with the file that you are using.

For example, if you want to simulate 4 days and you have 2 start-up days, you 
need: 4*24+2*24+1*24=168 data in your file. The data you are using for the 
extra do not matter but they need to be there.

Also, just keep in mind that tdf can only treat 1 timestep per hour at the 
moment but there is work in progress to improve this.

Hope this helps.

Georgios


On Tuesday 16 October 2007 13:12, Ali fallahi wrote:
> Hi,
>
> Regarding my question about zone control model in ESP-r, here are some
> explanations about my model. Whatever I am trying to represent with
> ESP-r is a comparison of modeling of ventilated facade with results of
> measurement campaign. In my modeling, ventilated facade is composed of
> one layer of non-ventilated double pane (next to ambient temperature),
> then a layer of ventilated glazing with a venetian blind inside (
> Fig.1 in attached file). Ventilated facade has been divided vertically
> to 9 zones.  Since here my aim is to study the phenomena happening
> inside ventilated facade the measured boundary conditions ( outdoor
> and indoor) are given as input for modeling. You were right that 18
> zones seem much larger than one would typically find in an empirical
> test chamber.  However, in my modeling there is a vertical temperature
> gradient produced by rising air inside the ventilated facade and I
> divided the ventilated facade to small zones to get closer to 2D heat
> transfer on glazing for higher accuracy. I have attached control and
> temporal file of my model. The temporal file gives zero temperature
> and control file is able to control maximum 12 zones (after
> modification of MBCDP in building.h from 8 to 100) . Even if temporal
> file is able just to control air point temperature, I should not get
> zero temperature for the whole simulation period. I would be pleased
> if you could let me know your advice on my case to control more than
> 12 surface temperatures.
>
> Best Regards,
> Ali Fallahi