[Equest-users] FW: eQuest Model problems

[Armstrong, Jamie]

Im still having problems with this model.  I think most of the problems are that I ran my loads in Trane Trace and am running the model in eQuest.  Another problem I think I'm having is that the design case system is a single zone packaged rooftop unit with natural gas reheat at the RTU level.  I've got the zones modeled and grouped according to orientation and occupancy to try to alleviate some of the problems but I still have around 1400 unmet hours.

Here is a list of some things I have done to fix unmet hours so far:

1.       Deleted % of OA at PSZ since the supply air that I input at the RTU level was not what eQuest was using

2.       Moved the total PSZ OA to the zone level, I put all the outside air in to the control zone.

3.       Set the heat and cooling schedules on all zones that weren't a room with a thermostat to undefined - so those rooms didn't add to unmet hours.

4.       Set Throttling range to 6

5.       Set thermostat type to reverse action on all zones.

6.       Checked schedules to make sure they are coordinated with other schedules.

7.       I stepped down the temperature when the unit first starts up in the morning to step down the space temp 2 degrees an hour to help reduce unmet hours at morning startup.
I've attached the baseline and design case files.  I also attached some of the simulation reports.

I'm having trouble modeling the gas domestic tankless water heater and a 9 kw electric tankless water heater.  My gas usage seems real high.

Thanks in advance for your help!!

Jamie Armstrong P.E.
Mechanical Engineer

[Description: Description: image001]

v. 210.546.0200 | www.dbrinc.com<http://www.dbrinc.com>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20120529/e5395cea/attachment.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image002.jpg
Type: image/jpeg
Size: 4860 bytes
Desc: image002.jpg
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20120529/e5395cea/attachment.jpg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: TX_Dallas_Love_Field.bin
Type: application/octet-stream
Size: 148992 bytes
Desc: TX_Dallas_Love_Field.bin
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20120529/e5395cea/attachment.bin>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 12604 SSA - Dallas Texas - LEED_Base_Bldg.pd2
Type: application/octet-stream
Size: 4957 bytes
Desc: 12604 SSA - Dallas Texas - LEED_Base_Bldg.pd2
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20120529/e5395cea/attachment.obj>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 12604 SSA - Dallas Texas.pd2
Type: application/octet-stream
Size: 26930 bytes
Desc: 12604 SSA - Dallas Texas.pd2
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20120529/e5395cea/attachment-0001.obj>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 12604 SSA - Dallas Texas.inp
Type: application/octet-stream
Size: 173043 bytes
Desc: 12604 SSA - Dallas Texas.inp
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20120529/e5395cea/attachment-0002.obj>