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RE: [EnergyPlus_Support] Help in using Energy Plus
Dear Maurizio
In answer to your questions:
a) You can't directly specify a wall boundary temperature in DesignBuilder,
but you could set up zones surrounding your zone of interest and condition
the temperature in the surrounding zones to the temperature required.... Or
you can generate the basic IDF data using DesignBuilder and setup
temperature boundary conditions for each surface in your zone by working
directly with the IDF data using the OtherSideCoeff option. Future versions
of DesignBuilder will allow allow temperature boundary conditions to be set
directly.
b) Yes it is possible to draw perimeter walls of different thickness, but
each block has perimeter walls of the same thickness. I.e. it is not
possible to draw a block with one face having one thickness and another face
a different thickness. To change the thickness of the external perimeter
wall, type in the wall thickness in the drawing options dialog in the bottom
left *before* you start the draw block command. You cannot change to the
thickness of the block perimeter walls once they have been drawn in current
versions. Note that the thickness of the walls in the 3-D DesignBuilder
model does not affect the thermal properties of the wall. This is governed
by the construction associated with the wall surface. But the thickness of
the wall will affect the volume of air in the zone and therefore the
ventilation heat loss/gain.
c) You can draw thermal bridges such as concrete lintels and columns in
DesignBuilder by going to the surface level using the draw surface tool.
You can draw as many opaque subsurfaces as you want in this way, but they
will all have the same construction (as defined on the constructions tab
under the subsurfaces header).
d) Yes you can use DesignBuilder to create EnergyPlus IDF files and then
modify it directly in EnergyPlus. Be aware that you cannot import any
changes you make to the IDF file back into DesignBuilder.
e) Take a look at the user interface section on the EnergyPlus web site for
more information on the various user interfaces available for EnergyPlus.
It's probably best if you send your DesignBuilder related questions directly
to the DesignBuilder support desk in future:
support@xxxxxxxxxxxxxxxxxxx
Best regards
Andy
------------------------------------------------------------------
Andy Tindale, DesignBuilder Software Ltd.
Palace Chambers, 41 London rd, Stroud,
Gloucestershire, GL5 2AJ, UK
Tel: +44 (0) 1453 755500
Email: andy@xxxxxxxxxxxxxxxxxxx
Web: www.designbuilder.co.uk
------------------------------------------------------------------
-----Original Message-----
From: EnergyPlus_Support@xxxxxxxxxxxxxxx
[mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx]On Behalf Of Maurizio Sorce
Sent: 03 November 2005 17:20
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] Help in using Energy Plus
Dear users,
I'm a new user of Energy Plus and I'm prooving to use the DesignBuilder Beta
Version Interface. I'm not sure if I have to buy the interface yet, because
of different causes:
a) I need to draw boundary walls. In TRNSYS there is a specific type of wall
that allows that. So, if I have to simulate a single zone of a whole
building, can I separe it with a boundary wall and specific the boundary
temperature.
b) Is it possible to draw perimetral walls of different tickness?
c) Can I consider thermal bridges? How?
d) Can I use Design Builder to generate a file and only after to modify it
directly in Energy Plus?
e) Have you another different (from Design Builder) and simple solution to
use Energy Plus?
Is there someone who can help me? Thank's to all,
---------------------------------------------------------------
Eng. Maurizio Sorce
DREAM Department of Energy and Environmental Research
University of Palermo
Viale delle Scienze, Building 9
I-90128 Palermo, Italy (EU)
mauriziosorce@xxxxxxxxxxxxxx
www.dream.unipa.it
Phone: (+39) 091 236012
Mobile phone: (+39) 3495386296
Fax: (+39) 091484425
---------------------------------------------------------------
Eng. Maurizio Sorce
DREAM Department of Energy and Environmental Research
University of Palermo
Viale delle Scienze, Building 9
I-90128 Palermo, Italy (EU)
mauriziosorce@xxxxxxxxxxxxxx
www.dream.unipa.it
Phone: (+39) 091 236012
Mobile phone: (+39) 3495386296
Fax: (+39) 091484425
The primary EnergyPlus web site is found at:
http://www.energyplus.gov
The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/
Attachments are not allowed -- please post any files to the appropriate
folder in the Files area of the Support Web Site.
EnergyPlus Documentation is searchable. Open EPlusMainMenu.idf and press
the "search" button.
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The primary EnergyPlus web site is found at:
http://www.energyplus.gov
The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/
Attachments are not allowed -- please post any files to the appropriate folder in the Files area of the Support Web Site.
EnergyPlus Documentation is searchable. Open EPlusMainMenu.idf and press the "search" button.
Yahoo! Groups Links
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