[Equest-users] Modifying Geometry

[Li, Lan]

Tim, 

 

I think eQuest is an energy modeling program and we are more concerned
in BTU/ton terms - or $$ at the end. If the roof was built somewhat
differently by modeler as it was shown on architectural drawings, my
question is only how much it will affect the energy usage. If it is a
minor, I won't drive myself crazy to make them same.  If you read Ashare
90-1, simplify building geometry for energy simulation purpose is
allowed. Also when we model a building, we can have tons of inputs and
lots of assumptions are made either by us or by the program itself, I
think majority of them can have a bigger impact on our goal than build a
prefect roof/building shell. I might be one of the lazy modelers. Hope
you can enjoy eQuest a little bit more. 

 

Thanks!

 

Lan

 

Lan Li, PE

Mechanical Engineer

Scheeser Buckley Mayfield LLC                                     

1540 Corporate Woods Parkway

Uniontown, OH 44685

Phone: (330) 896-4664 ext. 123

Cell: (330) 904-6292

Fax: (330) 896-9180

lli at sbmce.com <mailto:lli at sbmce.com> 

www.sbmce.com <http://www.sbmce.com/> 

 

Columbus Branch Office (614) 448-1498

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________________________________

From: tim [mailto:tim.jgrier at fuse.net] 
Sent: Wednesday, July 21, 2010 1:29 PM
To: 'Carol Gardner'
Cc: equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Modifying Geometry

 

If you're complimenting me on my observation, my awareness must be at an
all-time high today.

 

How about a complex roof shape like the one attached?  Notice ridge
lines don't match and there is a gable at the porch end as well as the
building end.

 

Can equest do that too?  As long as one would put in the training time
of course...

 

Tim

 

 

From: Carol Gardner [mailto:cmg750 at gmail.com] 
Sent: Wednesday, July 21, 2010 1:01 PM
To: tim
Cc: Omar Katanani; equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Modifying Geometry

 

Well, at least your powers of observation aren't suffering.

Yes, you can model individual ceiling heights per room. You can do
almost anything once you take the time to learn how. What are the
specifics of what you want to do: model a room with two different
ceiling heights or model a bunch of rooms with one height and a bunch
with another height? A picture would be great if ya have one.

On Wed, Jul 21, 2010 at 9:56 AM, tim <tim.jgrier at fuse.net> wrote:

Wow - I think I struck a nerve.

 

On a related note...

Does equest have a way to model individual ceiling heights per room?

 

Thanks,

Tim

 

 

From: Carol Gardner [mailto:cmg750 at gmail.com] 
Sent: Wednesday, July 21, 2010 12:43 PM
To: tim
Cc: Omar Katanani; equest-users at lists.onebuilding.org


Subject: Re: [Equest-users] Modifying Geometry

 

I have got to protest this one, sorry Tim. 


Buying a Revit license to be able to accurately model geometry in eQUEST
is, to be blunt, crazy. It's really pretty easy to revise your geometry
and if you can't do that using one of the 3 methods I provided earlier,
you need to figure out how to train yourself better or leave the field.
It's not just a matter of being able to use eQUEST at this point, it's a
matter of being able to generate an accurate model using any tool. Being
able to import CAD or Revit data into energy models is a recent
development. Frankly, I question it's utility, especially if people now
think they have to use it or they can't model a building. Friendly front
ends like eQUEST, DesignBuilder, etc., are great but you need to know
how a building operates and how the systems work or it's just GIGO. 

Carol

On Wed, Jul 21, 2010 at 9:29 AM, tim <tim.jgrier at fuse.net> wrote:

Omar

I haven't had much luck with customizing spaces either.  

I think there is a way to import a revit model file into equest.  If I
needed complicated zones & spatial geometry, I would probably consider a
revit license, but with that come's more money ($4-$6k for 1 standalone
license) and possibly more training, but might save a whole lot of
headache.

 

Seems like equest is more of an energy modeler than an accurate building
modeler.

 

tim  

 

 

 

From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Omar
Katanani
Sent: Wednesday, July 21, 2010 10:46 AM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Modifying Geometry

 

 

Dear all,

Once again, another problem!

I have several spaces which were geometrically modified in the design.
For example, a room that was split into two different ones; with each
room being a different hvac zone. How can I possibly split a room into
two zones "1" and "2"? Shall I modify the geometry of the old zone to be
that of zone "1", and then add another zone "2" from scratch? If this is
what should be done, how can I do this accurately?

Attached is the polygon view of one of my floors. When you look at them
in 2-D or 3-D views, the building seems perfect in shape. Notice the
rectangle to the left of the picture! This is actually a zone that lies
inside the building. But it appears like this in polygon view. I think
it is some problem of coordinate references or so!
So when I need to modify the geometry according to coordinates of
vertices, I'm suffering!

Many thanks!
Omar

___________________________

Omar Katanani
Sustainable Design Engineer
Email: omar at ecoconsulting.net


EcoConsulting (Lebanon)
Nahas Building, 4th floor
4 St-Maron Street / Georges Haddad Avenue
Postal Code: 2028 5806 SAIFI
Beirut, Lebanon
Tel:       +961 (0) 1 971 255
Mobile:    +961 (0) 3 045 045


EcoConsulting (UK) Ltd
28 Marshalsea Road
London, SE1 1HF
Tel: +44 (0)207 939 0989
Fax: +44 (0)207 939 0981
Website: www.ecoconsulting.net


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-- 
Carol Gardner PE




-- 
Carol Gardner PE

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