[esp-r] Re: problem glazing sensitivity

[Geissler Achim]

Dear Filippo

I am not quite sure I have understood how your actual approach is, but here some hints / suggestions. Yes, your optical data set must be "called" by your MLC of type TRAN. To change the solar transmission (I assume you mean by "direct"), you need to change all five values for the angles of incidence considered. Depending on the properties of the glazing system, you should probably also change the solar absorption of at least the main absorbing layer. You can do this quite automatically via scripting if you are using a Cygwin / Unix type of platform. Attached (if it goes through the list) is an example script which could be used like this (this exchanges the solar absorption values in the glazing data base of optical data set 10, layer 3):

========================
OCON=10
OLAY=3

# Solar absorption values for the layer of interest
DATA1="1.000 0.762 0.743 0.743 0.735 0.731"
DATA2="1.000 0.821 0.854 0.852 0.849 0.846"

TRANLIST="DATA1 DATA2"

...

# Run simulation cases
for TRN in $TRANLIST
do

    case $TRN in
      DATA1) ODAT=$DATA1;;
      DATA2) ODAT=$DATA2;;
    esac

  # set solar absorption for blind-and-glazing
. ./set_optics-props.sh $VAR.cfg $OCON $OLAY $ODAT

...

==========================

Achim


Von: esp-r-bounces at lists.strath.ac.uk [mailto:esp-r-bounces at lists.strath.ac.uk] Im Auftrag von Filippo Monari
Gesendet: Freitag, 11. November 2011 12:58
An: esp-r at lists.strath.ac.uk
Betreff: [esp-r] problem glazing sensitivity

Hi everybody,
I'm trying to make some sensitivity study on glazing components, changing the features of the appropriate optical set and runnings several simulation.
In particular I'm focusing on the direct transmission, giving to it a variation of +-10%.
Well looking to the results (zone temperatures and solar processes) I find out that the model doesn't react to my changes, which does not make sens...
So I'd like to know if there is some e particular parameter to set in order to link the optical set to construction component. I have seen there's a control option  in the construction menu relative to a zone but I wasn't able to work out with it.
Any suggestion?
Thank you in advance,
Filippo
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