[Bldg-sim] sources for material libraries

[Chip Barnaby]

All,

For ASHRAE 1199-RP some years ago (2003 - 2004 ish) I scrounged 
around looking for material properties.  Attached is a summary of 
what I came up with for some common materials.  As you can see, there 
is quite a range of opinion for some properties for some materials 
(including cases of different values from 2 different places in 
ASHRAE HOF).  I do not know the source(s) of those differences, in 
some cases there are probably regional differences and/or changes 
over time.  Or maybe just bad measurements.

Moisture content is another variable of which we are all becoming 
more aware.  Lab measurements vs. real-building situations.

Updated versions of some of these sources are probably available.

It would be an excellent project to build up a collection of this 
sort of info in some shared place, such as the IBPSA-USA Wiki 
(bembook.ibpsa.us).

Chip Barnaby


At 10:48 PM 1/15/2014, Christoph Reinhart wrote:
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>Content-Type: multipart/alternative;
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>boundary="_000_1B23446CBF250648A2FC775DE3FE7E8037C14614OC11expo28excha_"
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>Dear colleagues,
>
>We are currently assembling a material library as a basis for energy 
>simulations and the question came up which source we should use to 
>describe the various thermal and optical properties of  typical 
>construction materials? A natural answer seems to be to use the 
>ASHRAE Handbook of Fundamentals 2009 Chapter 26 which lists such 
>numbers. Are these the tables that "all" of you are using or am I 
>missing an important resource? What about our Canadian, European and 
>other international friends? Would you scorn at an ASHRAE library 
>and rather use your own numbers? This data input is obviously 
>tedious so we want to avoid having to do repeatedly.
>
>All the best,
>
>Christoph
>
>
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---------------------------------------------------------
Chip Barnaby, BEMP     cbarnaby at wrightsoft.com
Vice President of Research
Wrightsoft Corp.            781-862-8719 x118 voice
131 Hartwell Ave            781-861-2058 fax
Lexington, MA 02421      www.wrightsoft.com
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