[Bldg-sim] Internal mass modeling guidance in E+?

[Chris Yates]

Perhaps mass could be related to occupancy quite easily. After all every
person needs a few square feet of desk, possibly some filing.

There is probably quite a simple arithmetic formula that holds true for
most situations, the arguments of which might be:
• occupant density
• desk space per occupant
• material thickness
• extra shelving required?

Ignore anything with less mass.

If you come up with an excel formula, I'd like a copy ;o)

Sent from my Android device. Please excuse typos, etc.
On 14 Jan 2013 20:16, "Qinpeng Wang" <qpwang at gatech.edu> wrote:

> Dear colleagues,
>
> I'm looking into furniture/internal mass modeling in energy models
> particularly within the environment of EnergyPlus but also not limited to
> that.
>
> I have two questions I guess:
>
> 1, Are there any modeling guide or reference building report that may give
> recommendations/instructions on how to represent furniture/internal mass
> inside a building if there is no much detailed information? I guess all I'm
> asking is are there any published data-set, or default values in terms of
> material property and area to represent furniture like what could be easily
> found about schedules and occupancy density?
>
> COMNET modeling guide has only one paragraph about it and it mentioned
> "The interior thermal mass and modeling assumptions in the baseline
> building shall be the same as the proposed design."
> Currently what I have is from Building America House Simulation Protocols:
> "The internal mass of furniture and contents shall be equal to 8 lb/ft2 of
> conditioned floor space. For solar distribution purposes, lightweight
> furniture covering 40% of the floor area shall be assumed."
>
> 2, DOE reference commercial buildings have internal mass objects in the
> idf. file, where does the information come from?
>
> Appreciate your input!
>
> Best,
>
> Qinpeng
>
> --
>
> Qinpeng Wang, PhD Student
>
> College of Architecture
>
> Georgia Institute of Technology
>
> Atlanta, GA 30332-0155
>
> _______________________________________________
> Bldg-sim mailing list
> http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org
> To unsubscribe from this mailing list send  a blank message to
> BLDG-SIM-UNSUBSCRIBE at ONEBUILDING.ORG
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/bldg-sim-onebuilding.org/attachments/20130115/30cef609/attachment-0002.htm>