[esp-r] Re: for double skin facade

[Jon Hand]

A question about a very thin double skin facade...
________________________________________

   I need establish  a model for a building with double skin facade. The gap distance between the glass curtain is 50mm. So, in esp-r, how to accomplish the gap in the model?

________________________________

There are several approaches to representing a double skin facade in
ESP-r and have been the subject of past research projects.

One approach is to treat the air gap as a thermal zone or a set of stacked thermal
zones which are connected together via an air flow network.  The air flow network
would be designed to represent the possible air flow patterns within the facade.
An email is not a very good media to describe the methodology needed or the
detailed steps required to define such a model.  Perhaps this would be a good
topic for a chapter in the ESP-r Cookbook.

A very thin double skin facade would not be a good candidate for the use of
a CFD domain because it would be difficult to derive a gridding scheme that
would accommodate the extreme ratio of depth to height.

There are a number of choices as to the design of a double skin model
which are dependent on the details of the facade, likely air flow regimes
and the types of performance that are of interest in the project.

To get more advise on the design of a model to represent a double skin facade
much more information would be needed about facade details as well as
the intent of the double skin facade, how it might be controlled, the type
of building and its location.

-Jon Hand