[Equest-users] Roof Conduction Load

Rodrigo Cerqueira rodrigo.cerqueira at mra.qc.ca
Thu Aug 8 05:58:09 PDT 2013


This happens because the load calculation is made with a fixed temperature
(see picture). All the spaces, include plenum zones, have the same
temperature by default (70°F). So, all roof load appears in the plenum
spaces. To considerate the roof load, you have to change this temperature in
plenum spaces and a part of roof load will appear like "internal surface
conduction". But I'm not sure if this is a good practice. Maybe someone else
has an opinion about that.



Rodrigo Cerqueira, ing. jr, M.Ing.

Simulation énergétique






De : equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] De la part de Bhartendu
Envoyé : 8 août 2013 06:35
À : equest-users at lists.onebuilding.org; bldg-sim at lists.onebuilding.org
Objet : [Equest-users] Roof Conduction Load


Hi All,


I am doing an energy simulation model in eQuest. I noticed that the load
through roof conduction in LS-C is zero where as in LS-B (for plenum space)
it is showing some load.
As per my understanding this load should appear in LS-C also.
Also, if I reduce the U value of the roof, the load through roof reduces and
can be accounted in LS-B only (plenum space).
Refer attached LS-C and LS-B reports.
Any help will be appreciated.
Thanks & Regards
Bhartendu Awasthi
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