[Bldg-sim] roof monitor, day lighting and photo sensors in DOE2.2

[Arvinder Dang]

Christian,

The roof monitor you add to the building should be added to the space and not to the plenum. The roof of the monitor can be constructed using a horizontal exterior wall and specified the construction used for the general roof of the building.

Note the roof that you think will act as a barrier in the model is not a part of the space but of the plenum. The space simply has a vertical glazing above from which the light is coming. So it doesn't know there is a barrier.
However it is recommended that you create the four planes of the roof using exterior wall surfaces to estimate the conductance from the roof surfaces correctly.

Do you actually have a plenum in this scenario where you have a roof monitor. If not all the roof surfaces should be a part of the space and not the plenum to account for the correct heat load from the roof.

Hopefully this helps



ARVINDER DANG, LEED(r) AP

SUSTAINABILITY SPECIALIST



SKIDMORE, OWINGS & MERRILL LLP

224 SOUTH MICHIGAN

CHICAGO, IL 60604

T: 312.360.4633  F: 312.360.4910

ARVINDER.DANG at SOM.COM





SOM



The information contained in this communication may be confidential, is intended only for the use of the recipient(s) named above, and may be legally privileged. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication, or any of its contents, is strictly prohibited and may be unlawful. If you have received this communication in error, please return it to the sender immediately and delete the original message and any copy of it from your computer system. If you have any questions concerning this message, please contact the sender.


-----Original Message-----
From: bldg-sim-bounces at lists.onebuilding.org [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Matthew Higgins
Sent: Friday, May 09, 2008 2:57 PM
To: Christian Stalberg
Cc: bldg-sim at lists.onebuilding.org
Subject: Re: [Bldg-sim] roof monitor, day lighting and photo sensors in DOE2.2

Did you get an answer Christian? I've been wondering this too...

Matthew Higgins, LEED AP
Technical Specialist
Environmental Dynamics, Inc.
Architecture and Sustainability Consulting Services
505.242.2851

Any data provided by the Consultant, verbal or written, are to be considered opinions of building energy and/or daylight performance. The Client understands that the Consultant has no control of occupant habits, equipment or material performance or characteristics, site or climate conditions or the Contractor's method of assembly, and that the Consultant's opinions regarding building energy/daylight performance are made on the basis of the Consultant's professional judgment and experience. The Consultant makes no warranty, express or implied, that the energy/daylight performance of the building will not vary from the Consultant's opinion of building energy/daylight performance.



Christian Stalberg wrote:

> I have a question re. adding a roof monitor to an existing schematic
> in DOE2. I have constructed a roof monitor using exterior walls and
> added the glazing to the monitor. I will be simulating use of day
> lighting and scheduled photo sensors. Questions:
>
> 1) do I need to remove the roof of the existing schematic and replace
> it with four horizontal exterior walls that will connect the monitor
> to the main building? I am assuming the roof will act as a barrier
> between the monitor and the main building conditioned space beneath
> it. Or is this unnecessary?
>
> 2) How do I place a roof on the monitor...do I use a horizontal exterior
> wall?
>
> Thanks!
>
> **++++++**
>
> **Christian Stalberg**, Energy Modeler
> Southern Energy Management
> (O) 919.836.0330
> (C) 919.801.0734
> 101 Kitty Hawk Drive
> Morrisville, NC 27560
> www.southern-energy.com <http://www.southern-energy.com>
>
>------------------------------------------------------------------------
>
>_______________________________________________
>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
>
>

_______________________________________________
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