Thick wall partly penetrating a zone

Hey guys,

A thick wall passes through a wall of a zone (please see the image below).

Is it possible to define it in HB, taking into account its shading effect as well as its thermal interaction with the zone ? (You know it is not an exterior shading device with thermal break. It is a continuous wall with significant heat transmittance)

The only way I could imagine to define the thick wall, is to divide it into two parts (interior and exterior), and then define each part as a zone! So 2 new zones would represent the wall. But these zones won't have any cavity or air inside; because the wall is solid. then the question would be:

What is the minimum size of a zone? Could a zone be as thick as a wall (e.g. 50 cm width)?

What is the maximum thickness of a wall/floor/ceiling/etc. in a zone? Could they occupy the whole space of the zone? i.e. Could a wall have a width equivalent to half of the whole zone's width?

Thank you

Aryan

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Replies to This Discussion

Permalink Reply by Abraham Yezioro on November 3, 2016 at 7:20am

Aryan,

Indeed you need to divide this mass in two. The external part should be defined as a shading element (context). The internal can be a thermal mass (see the HB_addInternalMass component for that matter).

You should NOT define this as thermal zones!!

-A.

Permalink Reply by Aryan Shahabian on November 3, 2016 at 7:59am

Hi Abraham,

Thank you for your reply.

Imagine the mass is a concrete wall and there are large windows on the walls of the room. Then if I divide the mass into an InternalMass and a ContextSrf there would be 2 problems:

1- It's not possible to assign an E+ construction material to the outer part of the mass (ContextSrf). Therefore its surface temperature would remain the same as the weather around.

2- The internal mass won't be affected by the sun. It also won't thermally interact with the outer part of the mass. Take into account that in reality there is no thermal break between the interior and the exterior parts of the mass. It is a single continuous concrete wall.

Best,

Ary

Permalink Reply by Aryan Shahabian on November 3, 2016 at 8:03am

http://www.grasshopper3d.com/group/ladybug/forum/topics/hb-shading-...

BTW I found this link relevant to the topic but couldn't find a solution for the problem I'm facing..

Permalink Reply by Abraham Yezioro on November 3, 2016 at 8:31am

I suggest sending the question to unmethours forum.

As far as i know, the external shading elements don't consider thermal properties and right now i'm lazy to search :-)

-A.

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