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In my experience electric reheat is the norm some older building, before
1970, may have hydronic reheat but this is the case in Quebec,
Canada.<br><br>
Martin <br><br>
<br>
At 16:34 26/05/2011, Field, Kristin wrote:<br>
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Alex,<br>
<br>
Sorry to take a little while to respond. You are correct that the
medium office reference building has a gas furnace and electric
reheat. We actually received some opposite industry feedback from
what you heard. We heard that installing gas at the terminal level
(vs. on the roof at the RTU for the central furnace) for reheat wouldn’t
be done for a building of that size – that installing electric reheat
would be simpler and, therefore, more common. Same for hydronic
reheat, especially if the central heating wasn’t hydronic. I’m
curious if your colleague’s answer would change depending on the size of
the building.<br>
<br>
This highlights one of the difficulties of creating one-size-fits-all
reference buildings – there are a lot of different opinions out
there! That said, if there is a large consensus against having
electric reheat in the medium office, we would consider changing it
whenever any future modifications are released. Unfortunately, I
can’t make any promises about a timeline for that right now.<br>
<br>
Anyone else feel like chiming in for the most appropriate system
type? For your “reference,” the medium office building is three
stories and about 53,000 sf total.<br>
<br>
Kristin<br>
<br>
P.S. You’re welcome, and I’m glad you’ve found the reference buildings to
be a valuable resource.<br>
<br>
***********************************************************************<br>
Kristin M. Field<br>
Mechanical Engineer<br>
Electricity, Resources, and Building Systems Integration Center<br>
National Renewable Energy Laboratory<br>
1617 Cole Blvd., MS RSF 202<br>
Golden, CO 80401<br>
303.384.7376 phone<br>
303.630.2055 fax<br>
<br>
<b>From:</b> Alex Krickx
[<a href="mailto:akrickx@seriousmaterials.com" eudora="autourl">
mailto:akrickx@seriousmaterials.com</a>] <br>
<b>Sent:</b> Tuesday, May 24, 2011 3:24 PM<br>
<b>To:</b> bldg-sim@lists.onebuilding.org<br>
<b>Cc:</b> Field, Kristin<br>
<b>Subject:</b> Medium-Office HVAC question<br>
<br>
Hello,<br>
<br>
First- thanks for the reference buildings! They are a great
resource.<br>
<br>
I had a question about the HVAC system that is in both the ‘Post 1980’
and ‘New 2004’ Medium Office Reference building (IDFs attached). Does the
HVAC system have a gas hook-up for the furnace (item coil:heating:gas)
and then use electricity for the reheat (item coil:heating:electric)? I
asked a colleague of mine about this, and he said “You would never build
a job with gas available on-site and electric reheat, even in the 80s”.
My background is more on Building Envelope and also simulation/software
more than it is in Mechanical Systems, so I don’t know one way or the
other. I was hoping that you could shed some light on the system that was
selected.<br>
<br>
We’re hoping to use the system as a baseline to investigate window
retrofits, and pick the HVAC system that we would most likely encounter
in existing buildings. Any information you can provide would be much
appreciated.<br>
<br>
Thanks in advance,<br>
Alex Krickx<br>
<br>
Alex Krickx, LEED AP<br>
Building Energy Specialist<br>
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<br>
<b>From:</b> bldg-sim-bounces@lists.onebuilding.org
[<a href="mailto:bldg-sim-bounces@lists.onebuilding.org" eudora="autourl">
mailto:bldg-sim-bounces@lists.onebuilding.org</a>] <b>On Behalf Of
</b>Field, Kristin<br>
<b>Sent:</b> Thursday, September 30, 2010 2:07 PM<br>
<b>To:</b> bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> [Bldg-sim] Reference Buildings v1.3_5.0 available on
Website<br>
<br>
All,<br>
<br>
The U.S. DOE Commercial Reference Buildings have been updated to version
1.3_5.0 and posted on the following Website:<br>
<br>
<a href="http://www1.eere.energy.gov/buildings/commercial_initiative/reference_buildings.html">
http://www1.eere.energy.gov/buildings/commercial_initiative/reference_buildings.html</a>
<br>
<br>
As with the previous release, there are 3 vintages of 16 different
building types modeled in 16 U.S. climates (3 x 16 x 16 = 768).
Users can download:<br>
<br>
· All 768 EnergyPlus 5.0
input files (.idf format)<br>
· All 768 EnergyPlus
table output files (.htm format)<br>
· All 48 “Scorecard”
spreadsheets for each building type in each vintage, summarizing input
and output details<br>
· Zip file of the 16 TMY2
weather files used (.epw format)<br>
· List of changes in
models between versions 1.3_5.0 and 1.2_4.0<br>
· Table of EUIs
[kBtu/sf/yr] for all models in each vintage<br>
· Archived versions of
previous releases for above files<br>
<br>
We appreciate all the valuable feedback we’ve received from users of
these models. Much of it has been incorporated into the changes
between versions.<br>
<br>
Regards,<br>
Kristin Field<br>
<br>
***********************************************************************<br>
Kristin M. Field<br>
Engineer II - Mechanical<br>
Electricity, Resources, and Building Systems Integration Center<br>
National Renewable Energy Laboratory<br>
1617 Cole Blvd., MS 5202<br>
Golden, CO 80401<br>
303.384.7376 phone<br>
303.384.7540 fax<br>
<br><br>
<br>
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