[EnergyPlus_Support] Re: Roof, ceiling Construction

["ooikoonbeng2004" <ooi_kb3@xxxxxxxxxxx>]

Many thanks Mike. I added the attic zone and a gable surface. 

i only need the MultiZone:Surface, i think. i used the example to 
enter Reference Crack Conditions and Reference Crack Data. 

i got an error message that one of the zone's ceiling is an orphan 
object. Any advice to help me on my first step in AirFlow Network? 

kind regards, 
ooi 
--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Michael J. Witte" 
<mjwitte@...> wrote:
>
> (This is a reply to message #8583, "Re: Window AC or Unitary 
(Roof, ceiling 
> Construction".  In the future, it is helpful to start a new 
message when asking 
> about a new topic.)
> 
> The space created by a "sloping roof on one side and a horizontal 
ceiling on 
> the other" should be modeled as a separate thermal zone.  For an 
example of 
> this, see the "ATTIC ZONE" in example file 
AirflowNetwork_Simple_House.idf
> 
> Mike
> 
> 
> 
> On 24 Jun 2007 at 2:13, ooikoonbeng2004 wrote:
> 
> > Hi everone, 
> > 
> > i am having difficulty to enter this roof CONSTRUCTION into the 
idf. 
> > 
> > The roof is made of sheet metal, supported by wooden trusses, 
and is 
> > sloping. i see in some documentation with the vertices of the 
> > sloping roof but how do i enter this into the idf? 
> > 
> > Below the sloping roof is an air space and below the air space 
is 
> > the horizontal gypsum ceiling boards, 2ft x 4ft, suspended by 
> > aluminum frames. For want of a better way to enter a sloping 
roof on 
> > one side and a horizontal ceiling on the other, i have used 
ASHRAE's 
> > air object. 
> > 
> > There are CEILING and ROOF options in Surface Heat Transfer. i 
have 
> > presumed that they are one construction. Is there an example 
file 
> > with CEILING and sloping ROOF? 
> > 
> > best regards, 
> > ooi.
> 
> ========================================================
> Michael J. Witte, GARD Analytics, Inc.
> EnergyPlus Testing and Support      
> EnergyPlus-Support@...
>




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