AW: [TRNSYS-users] Type 34 shading device and additional external shading

[Susanna Medel]

Hello Timo,
I don´t have any experience with Type 34, but what I would do is to control
it with an external equation component. You can define two values as inputs,
one would be the shading factor calculated by type 34 ( ex: In34) and the
other one, a constant value for the venician blinds (ven_blin = 0.5). Then
you can define an equation that takes the biggest value between these
inputs. Something like:

	If In34 > ven_blin then => Total_shading = In34

	If In34 < ven_blin then => Total_shading = ven_blin

You can then connect this output value (Total_shading) with your Type56.

Hope it helps.

Viele Grüße,
Susanna Medel

___________________
Susanna Medel

Phönix Sonnewärme AG
Am Treptower Park 28-30
D-12435 Berlin
Telf: +49 30 530007-252



-----Ursprüngliche Nachricht-----
Von: trnsys-users-admin at engr.wisc.edu
[mailto:trnsys-users-admin at engr.wisc.edu]Im Auftrag von Timo Sengewald
Gesendet: Donnerstag, 8. Juli 2004 14:34
An: TRNSYS-group
Betreff: [TRNSYS-users] Type 34 shading device and additional external
shading


Hello,

it is the first time I use Type 34 with Type 56 and until now everything
worked fine. But what I actually want to simulate is a window shaded by
slats at the façade (wingwall shading) and by an additional external
shading device (venician blinds). How can I combine the values resulting
from these two effects?

My two ideas were:

1 I can multiply (equation component or directly in the building
description) the shading factor calculated by type 34 with an additional
external shading factor (say 0.5). But the result can be 0 (no shading)
although the window is shaded.

2 I can add these two values which may result in a shading factor larger
than 1...

Type 34 has been discussed several times in the group but I did not find
any hints on that problem. Has somebody got an idea?


Thanks for your advice!


Timo

_______________________________________________
Timo Sengewald

BLS Energieplan GmbH
Elsenstraße 106
D-12435 Berlin
Tel.: +49 30 53 32 81-0
Fax: +49 30 53 32 81-40


www.bls-energieplan.de


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