[TRNSYS-users] ASHRAE 90.1 User Defined Libs - per Cimate Zones for ASHRAE 90.1 Compliance

[David BRADLEY]

Marcus and Jean,
   In 90.1, ASHRAE goes give a bit of direction as to the materials that 
you are required to use in your Baseline Design walls. Reference the 
"Baseline Building Performance" cell in row 5 of Table G3.1. For the 
most part, Baseline Design buildings have steel-framed, insulated walls. 
That means that the wall should be mainly comprised of a material that 
has the equivalent thermal properties (density, conductivity, and 
specific heat) of a combination of steel studs and fiberglass batt 
insulation, appropriately area weighted.

   The values that we use are:
conductivity 0.4 kJ/h.m.K
capacity: 0.84 kJ/kg.K
density: 490.6 kg/m3

   Depending upon the climate zone, there may or may not be a 
requirement for continuous (rigid foam usually) insulation as well.  
Other assemblies such as floors, roofs, etc. also have their own 
construction requirements listed in that same G3.1 table.
Best,
  David

On 2/12/2012 04:41, Marcus wrote:
> Hi Jean, welcome to TRNSYS! I did one LEED project in TRNSYS, but 
> unfortunately I couldn't dig up the constructions files. But it's 
> fairly easy to put together a few centimeters of concrete then add and 
> adjust a massless insulation layer to match the U-value required. This 
> is what I do to get a first approximation. As far as I know, ASHRAE 
> doesn't specify actually constructions for baseline - like what the 
> exact mass should be, except that it should be "light weight".
>
> Sorry I can't be of more help, but let me know if there's anything else.
>
> Marcus
> -- 
> Marcus Jones, M.Sc., LEED^® AP BD+C
> /Freelance energy consultant/
> /Vienna, Austria/
>
>
> On Thu, Feb 9, 2012 at 5:44 PM, jeannieboef 
> <jeannieboef at googlemail.com <mailto:jeannieboef at googlemail.com>> wrote:
>
>     Hello group, being a new user and trying to learn trnsys on a live
>     project, I would love if someone could save me some time by
>     donating me their user defined libraries regarding building
>     envelope properties of the constructions as defined in ASHRAE
>     90.1. This is typically used in a "baseline" building for the
>     building energy simulation required by the LEED certification system.
>     Kind regards
>     Jean Marais
>
>     Sent from my iPhone
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-- 
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI  53703 USA

P:+1.608.274.2577
F:+1.608.278.1475
d.bradley at tess-inc.com

http://www.tess-inc.com
http://www.trnsys.com

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